Abstract:
A vehicle may include a body controller programmed to limit operation of at least one vehicle feature to reduce battery consumption during transit of the vehicle in response to a vehicle flag indicating a transport status, and to enable operation of the at least one vehicle feature during manufacturing in response to the vehicle flag indicating a factory status.

Description:
TECHNICAL FIELD 
       [0001]    Disclosed herein are key off energy management systems. 
       BACKGROUND 
       [0002]    As more and more features are added to various vehicles, more electrical modules are needed. With this increase in electrical modules comes an increase in power requirements, both during vehicle use and non-use. When the vehicle ignition is off, power is supplied to the various modules by the vehicle battery. Thus, the amount of load placed on the battery during vehicle key off is increasing. This may lead to the use of heavier, larger, and more expensive batteries. 
       SUMMARY 
       [0003]    A vehicle may include a body controller programmed to limit operation of at least one vehicle feature to reduce battery consumption during transit of the vehicle in response to a vehicle flag indicating a transport status, and to enable operation of the at least one vehicle feature during manufacturing in response to the vehicle flag indicating a factory status. 
         [0004]    A vehicle may include a body controller programmed to receive a life cycle indicator and at least one other factor and to limit or enable at least one vehicle feature based the life cycle indicator and at least one other factor, the at least one other factor including at least one of a time since vehicle key-off and a battery status. 
         [0005]    A vehicle may include a body controller programmed to limit operation of at least one vehicle feature in response to a vehicle flag indicating a manufacture status and to enable the at least one vehicle feature in response to the vehicle flag indicating a consumer status. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0006]    The embodiments of the present disclosure are pointed out with particularity in the appended claims. However, other features of the various embodiments will become more apparent and will be best understood by referring to the following detailed description in conjunction with the accompanying drawings in which: 
           [0007]      FIGS. 1A and 1B  illustrate an example diagram of a system that may be used to provide telematics services to a vehicle; 
           [0008]      FIG. 2  illustrates an example block diagram of a portion of an energy management system; 
           [0009]      FIGS. 3  illustrate an example state flow diagram and process flow for the energy management system; and 
           [0010]      FIG. 4  illustrates an example flow chart for a process of the energy management system. 
       
    
    
     DETAILED DESCRIPTION 
       [0011]    As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. 
         [0012]    Described herein an energy consumption management system for managing the key off load (KOL) to a battery. To limit the battery drain during vehicle key-off, various key off operating modes may be developed. These modes may permit necessary vehicle features to be available, while disabling, or slowing down other vehicle features. In one example, during a transportation mode where a vehicle is being transported from an assembly location to a dealership, features may be disabled aggressively since little-to-no customer interaction is to occur during this time. In this mode, specific features such as power lift gates, power running boards, etc., may be disabled. 
         [0013]      FIGS. 1A and 1B  illustrate an example diagram of a system  100  that may be used to provide telematics services to a vehicle  102 . The vehicle  102  may be one of various types of passenger vehicles, such as a crossover utility vehicle (CUV), a sport utility vehicle (SUV), a truck, a recreational vehicle (RV), a boat, a plane or other mobile machine for transporting people or goods. Telematics services may include, as some non-limiting possibilities, navigation, turn-by-turn directions, vehicle health reports, local business search, accident reporting, and hands-free calling. In an example, the system  100  may include the SYNC system manufactured by The Ford Motor Company of Dearborn, Mich. It should be noted that the illustrated system  100  is merely an example, and more, fewer, and/or differently located elements may be used. 
         [0014]    The computing platform  104  may include one or more processors  106  and controllers configured to perform instructions, commands and other routines in support of the processes described herein. For instance, the computing platform  104  may be configured to execute instructions of vehicle applications  110  to provide features such as navigation, accident reporting, satellite radio decoding, hands-free calling and parking assistance. Such instructions and other data may be maintained in a non-volatile manner using a variety of types of computer-readable storage medium  112 . The computer-readable medium  112  (also referred to as a processor-readable medium or storage) includes any non-transitory medium (e.g., a tangible medium) that participates in providing instructions or other data that may be read by the processor  106  of the computing platform  104 . Computer-executable instructions may be compiled or interpreted from computer programs created using a variety of programming languages and/or technologies, including, without limitation, and either alone or in combination, Java, C, C++, C#, Objective C, Assembly, Fortran, Pascal, Java Script, Python, Perl, and PL/SQL, or other programming language. 
         [0015]    The computing platform  104  may be provided with various features allowing the vehicle occupants to interface with the computing platform  104 . For example, the computing platform  104  may include an audio input  114  configured to receive spoken commands from vehicle occupants through a connected microphone  116 , and auxiliary audio input  118  configured to receive audio signals from connected devices. The auxiliary audio input  118  may be a physical connection, such as an electrical wire or a fiber optic cable, or a wireless input, such as a BLUETOOTH audio connection. In some examples, the audio input  114  may be configured to provide audio processing capabilities, such as pre-amplification of low-level signals, and conversion of analog inputs into digital data for processing by the processor  106 . 
         [0016]    The computing platform  104  may also provide one or more audio outputs  120  to an input of an audio module  122  having audio playback functionality. In other examples, the computing platform  104  may provide the audio output to an occupant through use of one or more dedicated speakers (not illustrated). The audio module  122  may include an input selector  124  configured to provide audio content from a selected audio source  126  to an audio amplifier  128  for playback through vehicle speakers  130  or headphones (not illustrated). The audio sources  126  may include, as some examples, decoded amplitude modulated (AM) or frequency modulated (FM) radio signals, and audio signals from compact disc (CD) or digital versatile disk (DVD) audio playback. The audio sources  126  may also include audio received from the computing platform  104 , such as audio content generated by the computing platform  104 , audio content decoded from flash memory drives connected to a universal serial bus (USB) subsystem  132  of the computing platform  104 , and audio content passed through the computing platform  104  from the auxiliary audio input  118 . 
         [0017]    The computing platform  104  may utilize a voice interface  134  to provide a hands-free interface to the computing platform  104 . The voice interface  134  may support speech recognition from audio received via the microphone  116  according to grammar associated with available commands, and voice prompt generation for output via the audio module  122 . In some cases, the system may be configured to temporarily mute or otherwise override the audio source specified by the input selector  124  when an audio prompt is ready for presentation by the computing platform  104  and another audio source  126  is selected for playback. 
         [0018]    The computing platform  104  may also receive input from human-machine interface (HMI) controls  136  configured to provide for occupant interaction with the vehicle  102 . For instance, the computing platform  104  may interface with one or more buttons or other HMI controls configured to invoke functions on the computing platform  104  (e.g., steering wheel audio buttons, a push-to-talk button, instrument panel controls, etc.). The computing platform  104  may also drive or otherwise communicate with one or more displays  138  configured to provide visual output to vehicle occupants by way of a video controller  140 . In some cases, the display  138  may be a touch screen further configured to receive user touch input via the video controller  140 , while in other cases the display  138  may be a display only, without touch input capabilities. 
         [0019]    The computing platform  104  may be further configured to communicate with other components of the vehicle  102  via one or more in-vehicle networks  142 . The in-vehicle networks  142  may include one or more of a vehicle controller area network (CAN), an Ethernet network, and a media oriented system transfer (MOST), as some examples. The in-vehicle networks  142  may allow the computing platform  104  to communicate with other vehicle  102  systems, such as a vehicle modem  144  (which may not be present in some configurations), a global positioning system (GPS) module  146  configured to provide current vehicle  102  location and heading information, and various vehicle ECUs  148  configured to cooperate with the computing platform  104 . As some non-limiting possibilities, the vehicle ECUs  148  may include a powertrain control module configured to provide control of engine operating components (e.g., idle control components, fuel delivery components, emissions control components, etc.) and monitoring of engine operating components (e.g., status of engine diagnostic codes); a body control module (as shown as BCM  210  in  FIG. 2 ) configured to manage various power control functions such as exterior lighting, interior lighting, keyless entry, remote start, and point of access status verification (e.g., closure status of the hood, doors and/or trunk of the vehicle  102 ); a radio transceiver module configured to communicate with key fobs or other local vehicle  102  devices; and a climate control management module configured to provide control and monitoring of heating and cooling system components (e.g., compressor clutch and blower fan control, temperature sensor information, etc.). 
         [0020]    As shown, the audio module  122  and the HMI controls  136  may communicate with the computing platform  104  over a first in-vehicle network  142 -A, and the vehicle modem  144 , GPS module  146 , and vehicle ECUs  148  may communicate with the computing platform  104  over a second in-vehicle network  142 -B. In other examples, the computing platform  104  may be connected to more or fewer in-vehicle networks  142 . Additionally or alternately, one or more HMI controls  136  or other components may be connected to the computing platform  104  via different in-vehicle networks  142  than shown, or directly without connection to an in-vehicle network  142 . 
         [0021]    The computing platform  104  may also be configured to communicate with mobile devices  152  of the vehicle occupants. The mobile devices  152  may be any of various types of portable computing device, such as cellular phones, tablet computers, smart watches, laptop computers, portable music players, or other devices capable of communication with the computing platform  104 . In many examples, the computing platform  104  may include a wireless transceiver  150  (e.g., a BLUETOOTH module, a ZIGBEE transceiver, a Wi-Fi transceiver, an IrDA transceiver, an RFID transceiver, etc.) configured to communicate with a compatible wireless transceiver  154  of the mobile device  152 . Additionally or alternately, the computing platform  104  may communicate with the mobile device  152  over a wired connection, such as via a USB connection between the mobile device  152  and the USB subsystem  132 . 
         [0022]    The communications network  156  may provide communications services, such as packet-switched network services (e.g., Internet access, VoIP communication services), to devices connected to the communications network  156 . An example of a communications network  156  may include a cellular telephone network. Mobile devices  152  may provide network connectivity to the communications network  156  via a device modem  158  of the mobile device  152 . To facilitate the communications over the communications network  156 , mobile devices  152  may be associated with unique device identifiers (e.g., mobile device numbers (MDNs), Internet protocol (IP) addresses, etc.) to identify the communications of the mobile devices  152  over the communications network  156 . In some cases, occupants of the vehicle  102  or devices having permission to connect to the computing platform  104  may be identified by the computing platform  104  according to paired device data  160  maintained in the storage medium  112 . The paired device data  160  may indicate, for example, the unique device identifiers of mobile devices  152  previously paired with the computing platform  104  of the vehicle  102 , such that the computing platform  104  may automatically reconnected to the mobile devices  152  referenced in the paired device data  160  without user intervention. 
         [0023]    When a mobile device  152  that supports network connectivity is paired with the computing platform  104 , the mobile device  152  may allow the computing platform  104  to use the network connectivity of the device modem  158  to communicate over the communications network  156  with the remote telematics services  162 . In one example, the computing platform  104  may utilize a data-over-voice plan or data plan of the mobile device  152  to communicate information between the computing platform  104  and the communications network  156 . Additionally or alternately, the computing platform  104  may utilize the vehicle modem  144  to communicate information between the computing platform  104  and the communications network  156 , without use of the communications facilities of the mobile device  152 . 
         [0024]    Similar to the computing platform  104 , the mobile device  152  may include one or more processors  164  configured to execute instructions of mobile applications  170  loaded to a memory  166  of the mobile device  152  from storage medium  168  of the mobile device  152 . In some examples, the mobile applications  170  may be configured to communicate with the computing platform  104  via the wireless transceiver  154  and with the remote telematics services  162  or other network services via the device modem  158 . The computing platform  104  may also include a device link interface  172  to facilitate the integration of functionality of the mobile applications  170  into the grammar of commands available via the voice interface  134  as well as into display  138  of the computing platform  104 . The device link interfaced  172  may also provide the mobile applications  170  with access to vehicle information available to the computing platform  104  via the in-vehicle networks  142 . Some examples of device link interfaces  172  include the SYNC APPLINK component of the SYNC system provided by The Ford Motor Company of Dearborn, Mich., the CarPlay protocol provided by Apple Inc. of Cupertino, Calif., or the Android Auto protocol provided by Google, Inc. of Mountain View, Calif.. The vehicle component interface application  174  may be once such application installed to the mobile device  152 . 
         [0025]    The vehicle component interface application  174  of the mobile device  152  may be configured to facilitate access to one or more vehicle  102  features made available for device configuration by the vehicle  102 . In some cases, the available vehicle  102  features may be accessible by a single vehicle component interface application  174 , in which case such the vehicle component interface application  174  may be configured to be customizable or to maintain configurations supportive of the specific vehicle  102  brand/model and option packages. In an example, the vehicle component interface application  174  may be configured to receive, from the vehicle  102 , a definition of the features that are available to be controlled, display a user interface descriptive of the available features, and provide user input from the user interface to the vehicle  102  to allow the user to control the indicated features. 
         [0026]    Systems such as the system  100  may require mobile device  152  pairing with the computing platform  104  and/or other setup operations. However, as explained in detail below, a system may be configured to allow vehicle occupants to seamlessly interact with user interface elements in their vehicle or with any other framework-enabled vehicle, without requiring the mobile device  152  to have been paired with or be in communication with the computing platform  104 . 
         [0027]    The vehicle ECUs  148  may include various sleep ECUs (as shown as ECUs  212  and  224  in  FIG. 2 ) configured to operate in various vehicle modes where the respective ECU is configured to use significantly less current, as well as monitor inputs in order to determine whether the ECU should wake-up. During the sleep ECU power consumption mode, most, if not all, vehicle features are inactive. As described herein, a key off load (KOL) mode may modify the ECU sleep modes to reduce KOL. 
         [0028]      FIG. 2  illustrates a block diagram of an energy management system  200  configured to manage energy modules and vehicle features based on a vehicle mode. The system  200  may include various sleep ECUs  212 ,  224  as described above. The sleep ECUs  212 ,  224  may be configured to perform in various power consumption modes, such as the ECU sleep mode. 
         [0029]    The system  200  may include a body control module BCM  210  configured to interface with an ignition switch  214  and the BMS  218 . The BCM  210  may maintain various life cycle modes of the vehicle. The BCM  210  may receive the current life cycle mode from a technician, service provider, engineer, or similar personnel during manufacturing. The life cycle mode may be updated based on the location or status of the vehicle. For example, during assembly and testing at a manufacturing plant, the life cycle mode may be in a ‘factory’ mode. After manufacturing is complete, and the vehicle is being transported to a dealership, the life cycle mode may be in a ‘transport mode’. Furthermore, once the vehicle reaches the dealership, appropriate personnel may update the life cycle status to a ‘normal’ mode. 
         [0030]    Once the vehicle enters a ‘normal’ mode, the BCM  210  may update a key off load (KOL) mode based on the life cycle mode and certain other factors. The BCM  210  may select the KOL mode when the initiation status is OFF. That is, the KOL mode may only be selected in response to vehicle key-off. As explained, the modes may be selected based on the vehicle location or vehicle status (e.g., the vehicle is at the factory, or the vehicle is in transport). Other factors may include a time since the ignition has been turned off and the state of charge (SOC) of the vehicle battery. In one example, the BCM  210  may update the KOL mode to a ‘critical’ mode in response to a low SOC being detected. In another example, the BCM  210  may update the KOL mode in response to the vehicle being turned off for a predefined amount of time (e.g., five days). The various KOL modes are described in more detail herein. 
         [0031]    The ignition switch  214  may be configured to receive input from the user as to start or stop the vehicle. The ignition switch  214  may be a traditional key-in switch configured to receive a physical key and upon rotation, start the vehicle engine. The ignition switch  214  may also be a keyless start switch configured to be depressed to start the vehicle. The ignition switch  214  may recognize several settings or positions such as START to start a vehicle, OFF when the vehicle is off, and ACC when the vehicle is in accessory (e.g., allowing certain vehicle features such as the radio, power windows, etc., to be operated). 
         [0032]    A battery management system (BMS)  218  may be a controller, processor and memory configured to manage the electric vehicle battery (not shown). The BMS may supply various battery data to the BCM  210  such as a battery critical signal, or other battery data such as the battery state of charge (SOC). 
         [0033]    The system  200  may include a gateway  222  arranged between the sleep ECUs  212  and the BCM  210 . The gateway may be a smart diagnostic link connector (SDLC) gateway configured to transmit a KOL mode, among other data and commands to the sleep ECU  212 . Further, the system  200  may include other sleep ECUs  224  also configured to receive signals and commands from the BCM  210 . The sleep ECUs  224  may be arranged on the same bus as a commanding ECU, such as the BCM  210 , and the ECUs  212  may be arranged on another communication bus. Both may receive a mode command via the gateway  222 .  FIG. 2  is an example system and the gateway and additional ECUs  224  may be replaced by a single HS-CAN network. 
         [0034]      FIG. 3  is an example process flow diagram illustrating an example state flow for the system  200  of  FIG. 2 . The BCM  210  may manage various modes in addition to the life cycle mode. These modes may include a vehicle mode, a sleep mode, and a KOL mode. Table 1 below shows the various modes. 
         [0000]    
       
         
               
             
               
               
               
               
               
             
           
               
                 TABLE 1 
               
             
             
               
                   
               
               
                 KOL Modes 
               
             
          
           
               
                   
                 Ignition 
                 Life Cycle 
                   
                   
               
               
                   
                 Status 
                 Mode 
                 Sleep Mode 
                 KOL Mode 
               
               
                   
                   
               
               
                   
                 RUN| 
                 Don&#39;t care 
                 Don&#39;t care 
                 NORMAL 
               
               
                   
                 START| 
               
               
                   
                 ACC 
               
               
                   
                 OFF 
                 FACTORY 
                 Don&#39;t care 
                 FACTORY 
               
               
                   
                 OFF 
                 TRANSPORT 
                 Don&#39;t care 
                 TRANSPORT 
               
               
                   
                 OFF 
                 NORMAL 
                 NORMAL 
                 NORMAL 
               
               
                   
                 OFF 
                 NORMAL 
                 HIBERNATE 
                 HIBERNATE 
               
               
                   
                 OFF 
                 NORMAL 
                 CRITICAL 
                 CRITICAL 
               
               
                   
                   
               
             
          
         
       
     
         [0035]    As explained, the life cycle mode may be an indication of the current vehicle location and/or status. The sleep mode may be an indication of the status of the sleep ECUs. For example, the sleep mode may indicate how the sleep ECUs are to behave in various life cycle modes. The KOL mode may be the operating/vehicle mode during key off, as determined by the BCM  210  based on the vehicle/life cycle mode and various other factors. The BCM  210  may update or alter these modes based on certain vehicle events such as a change in the ignition status. 
         [0036]      FIG. 3  illustrates an example process flow for updating certain modes. At step  302 , the ignition switch  214  may be turned on and may transmit an ignition status of START or RUN to the BCM  210 . Further, the sleep mode may be in normal mode. At step  304 , the ignition switch  214  may be turned off and may transmit an ignition status to OFF to the BCM  210 . At step  306 , the BCM  210  may then determine how long the ignition status has been OFF. If the ignition status has been OFF for longer than a predefined amount of time (e.g., 5 days), then the BCM  210  may update the sleep mode to hibernate. The BCM  210  may also update the KOL mode to hibernate. 
         [0037]    At step  308 , the BCM  210  may determine if the battery SOC is below a predefined threshold. This may be realized in response to the BCM  210  receiving a battery critical signal from the BMS  218  or other control modules. The BCM  210  may update the sleep mode to be critical in response to receiving the battery critical signal. 
         [0038]    At step  310 , if the ignition status changes to RUN or START, the BCM  210  may update the KOL to normal mode. The BCM  210  may then continue to wait for an ignition status of OFF. 
         [0039]    Table 2 illustrates an example table illustrating the relationships between the ignition status, the life cycle mode and the KOL modes. 
         [0000]    
       
         
               
             
               
               
               
               
             
           
               
                 TABLE 2 
               
             
             
               
                   
               
               
                 KOL Mode with respect to Life Cycle Mode and Ignition Status 
               
             
          
           
               
                 Ignition 
                 Life Cycle 
                   
                   
               
               
                 Status 
                 Mode 
                 KOL Mode 
                 Comment 
               
               
                   
               
               
                 RUN| 
                 Don&#39;t care 
                 NORMAL 
                 more battery power 
               
               
                 START| 
                   
                   
                 can be used 
               
               
                 ACC 
               
               
                 OFF 
                 FACTORY 
                 FACTORY 
                 many features need 
               
               
                   
                   
                   
                 to operate so VO 
               
               
                   
                   
                   
                 can verify 
               
               
                   
                   
                   
                 performance 
               
               
                 OFF 
                 TRANSPORT 
                 TRANSPORT 
                 very strict 
               
               
                   
                   
                   
                 limitations to meet 
               
               
                   
                   
                   
                 transport 
               
               
                   
                   
                   
                 requirements (for 
               
               
                   
                   
                   
                 example 100 days) 
               
               
                 Has just 
                 NORMAL 
                 NORMAL 
                 Normal feature 
               
               
                 been turned 
                   
                   
                 usage expected - 
               
               
                 OFF 
                   
                   
                 more battery drain 
               
               
                   
                   
                   
                 allowed 
               
               
                 Ignition has 
                 NORMAL 
                 HIBERNATE 
                 After 5 days of 
               
               
                 been OFF 
                   
                   
                 Key OFF, features 
               
               
                 for 5 days 
                   
                   
                 begin to shut down 
               
               
                   
                   
                   
                 to save battery 
               
               
                 Ignition is 
                 NORMAL 
                 CRITICAL_BATT 
                 Need to conserve as 
               
               
                 OFF and 
                   
                   
                 much power as 
               
               
                 battery state 
                   
                   
                 possible in order to 
               
               
                 of charge is 
                   
                   
                 allow the customer 
               
               
                 too low. 
                   
                   
                 to start the car later. 
               
               
                   
               
             
          
         
       
     
         [0040]    As shown in Table 2, The KOL mode is normal when the ignition status is in RUN, START, or ACC. This is due to the fact that these ignition modes require full function. Limiting features in these ignition modes may not be not desirable. When the ignition status is OFF (i.e., the vehicle is keyed off), the KOL mode may be in one of a normal, transport, or factory mode. The BCM  210  may select one of these modes based on the life cycle mode, as well as other factors such as SOC and time since the ignition has been turned off 
         [0041]    During normal life cycle modes, the KOL mode may be one of normal, hibernate, or critical. If the ignition has recently been turned off, the KOL mode may be in the normal mode. In this mode, normal feature usage may be realized and more load or battery drain is permitted. If the ignition has been off for a predefined amount of time, such as longer than five days, the KOL mode may be hibernating. In this mode, certain features are shut down to conserve battery power. This may be the case when a vehicle is parked for a long time and it may be beneficial to conserve battery power so that the vehicle may eventually be started again. 
         [0042]    During the normal life cycle mode, the KOL may be critical when the BCM  210  receives indications that the battery SOC is below a certain threshold. This indication may be received in the form of a SOC value received from the BMS  218 . In this example, the BCM  210  may determine whether the SOC is below a predefined threshold. That is, if the SOC is below 10%, for example, then the BCM  210  may determine that the battery is critical, and trigger the critical KOL mode. In another example the BMS  218  may transmit a battery critical signal to which the BCM  210  may select the critical KOL mode. In this mode, as much battery power should be conserved as possible to allow the customer to start the car. This mode may be entered whenever the SOC is below a certain threshold, regardless of when the ignition has been turned off. 
         [0043]    When the life cycle mode is factory mode, the KOL mode may also be factory mode. In this mode, many features should be enabled in order to perform testing and to verify performance during vehicle assembly. When the life cycle mode is transport mode, the KOL mode may also be transport mode. In this mode, many features may be limited, slowed, or disabled to conserve the battery during the transport of the vehicle from the factory to the dealership. 
         [0044]    Table 3 below illustrates example feature permissions in the various KOL modes. 
         [0000]    
       
         
               
             
               
               
             
               
               
               
               
               
               
             
               
             
               
               
               
               
               
               
             
               
             
               
               
               
               
               
               
             
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 3 
               
             
             
               
                   
               
               
                 KOL Mode and Feature Summary 
               
             
          
           
               
                 KOL_Mode 
                 ECU Sleep, Reduced 
               
             
          
           
               
                 FACTORY 
                 TRANSPORT 
                 NORMAL 
                 HIBERNATE 
                 CRITICAL_BATT 
                 KOL Requirement 
               
               
                   
               
             
          
           
               
                 Low-Level Fundamentals 
               
             
          
           
               
                   
                 ✓ 
                   
                 ✓ 
                 ✓ 
                 Slow input sampling of 
               
               
                   
                   
                   
                   
                   
                 critical inputs only 
               
               
                 ✓ 
                 ✓ 
                 ✓ 
                 ✓ 
                 ✓ 
                 Reduced Pull-up 
               
               
                   
                   
                   
                   
                   
                 settling time 
               
               
                 ✓ 
                 ✓ 
                   
                   
                 ✓ 
                 No RealTime Clock 
               
               
                   
                   
                   
                   
                   
                 Recalibration 
               
             
          
           
               
                 Battery Savers &amp; Delayed Accessory 
               
             
          
           
               
                 ✓ 
                 ✓ 
                   
                   
                 ✓ 
                 Courtesy/DemandLamp 
               
               
                   
                   
                   
                   
                   
                 BattSaver duration 
               
               
                   
                   
                   
                   
                   
                 reduced to one minute 
               
               
                 ✓ 
                 ✓ 
                   
                 ✓ 
                 ✓ 
                 HeadLamp BattSaver 
               
               
                   
                   
                   
                   
                   
                 duration reduced to one 
               
               
                   
                   
                   
                   
                   
                 minute 
               
               
                 ✓ 
                 ✓ 
                   
                   
                 ✓ 
                 Delayed Accessory 
               
               
                   
                   
                   
                   
                   
                 duration reduced to one 
               
               
                   
                   
                   
                   
                   
                 minute 
               
               
                   
                 ✓ 
                   
                 ✓ 
                 ✓ 
                 PowerPoint Latched 
               
               
                   
                   
                   
                   
                   
                 Relays forced OFF 
               
             
          
           
               
                 Feature Behavior Restrictions 
               
             
          
           
               
                 ✓ 
                 ✓ 
                 || 
                 || 
                 || 
                 Disable Perimeter 
               
               
                   
                   
                   
                   
                   
                 Alarm &amp; Battery 
               
               
                   
                   
                   
                   
                   
                 Backed Sounder 
               
               
                   
                   
                   
                   
                   
                 “heartbeat” 
               
               
                 = 
                 ✓ 
                 □ 
                 □ 
                 ✓ 
                 RKE RF Monitoring 
               
               
                   
                   
                   
                   
                   
                 uses Reduced Current 
               
               
                   
                   
                   
                   
                   
                 Drain Strategy 
               
               
                 ✓ 
                 ✓ 
                   
                 ✓ 
                 ✓ 
                 Approach Detection 
               
               
                   
                   
                   
                   
                   
                 Disabled 
               
               
                 All 
                 None 
                 All 
                 All 
                 Driver 
                 Allowed Passive Entry 
               
               
                   
                   
                   
                   
                   
                 Doors w/ Cap Sensors 
               
               
                 = 
                 Disabled 
                   
                 Reduced 
                 Disabled 
                 TPM RF Monitoring 
               
               
                   
                   
                   
                   
                   
                 uses Reduced Current 
               
               
                   
                   
                   
                   
                   
                 Drain Strategies 
               
               
                 ✓ 
                 ✓ 
                   
                 || 
                 ✓ 
                 Disable 
               
               
                   
                   
                   
                   
                   
                 Welcome/Farewell 
               
               
                 = 
                 = 
                   
                   
                 ✓ 
                 Disable ParkLamp 
               
               
                   
                   
                   
                   
                   
                 Detent on the 
               
               
                   
                   
                   
                   
                   
                 Headlamps Switch 
               
               
                   
                 FastSleep 
                   
                 LimitWake 
                 LimitWake 
                 TCU uses Reduced 
               
               
                   
                   
                   
                   
                   
                 Current Drain Strategies 
               
               
                 ✓ 
                 ✓ 
                   
                 ✓ 
                 ✓ 
                 Disable Fuel-Operated 
               
               
                   
                   
                   
                   
                   
                 Heater 
               
               
                 ✓ 
                 ✓ 
                   
                   
                 ✓ 
                 Disable Infotainment 
               
               
                   
                   
                   
                   
                   
                 Extended Play 
               
               
                   
                 ✓ 
                   
                   
                 ✓ 
                 Electro-Chromic 
               
               
                   
                   
                   
                   
                   
                 Device Dimming uses 
               
               
                   
                   
                   
                   
                   
                 Reduced Current Drain 
               
               
                   
                   
                   
                   
                   
                 Strategy 
               
               
                 ✓ 
                 ✓ 
                   
                   
                   
                 Disable Air-Suspension 
               
               
                   
                   
                   
                   
                   
                 System After-Run 
               
               
                   
                   
                   
                   
                   
                 Mode 
               
               
                   
               
             
          
         
       
     
         [0045]    As shown in Table 3, various ECU sleep and KOL requirements are listed. These requirements may describe various vehicle features affected in response to the system  200  attempting to limit the KOL. Table 3 illustrates an example configuration of the various features and requirements that may be affected during certain KOL modes. For example slow input sampling of critical inputs may be enabled when the KOL mode is in transport, hibernate, or critical modes. This requirement may aim to reduce the number of inputs that may wake and ECU. For example, in a normal operating mode, all polled inputs may be process normally, e.g., every 50 ms. In the hibernate mode, input polling may be disabled for all non-critical inputs. At the same time, critical inputs may be polled at a slower polling rate of 150 ms or greater, for example. Furthermore, in the transport mode, input polling may be process at an even slower rate, such as 500 ms or greater, for example. 
         [0046]    In another example, the operation of real time clock recalibration may differ depending on the KOL mode. The real-time clock recalibration may be used to periodically calibrate a low-current microprocessors internal RC oscillator. During factory, transport, and critical modes, the real-time clock recalibration is disabled. 
         [0047]    Is also illustrated in Table3, battery and delayed accessory features may also operate depending on the KOL mode. With respect to the courtesy lamp, a timer may be started on any ignition transition to OFF. Whenever the KOL mode is in one of the factory, transport, or critical modes, the courtesy lamp may not remain on for more than 60 seconds, for example. Similarly, the delayed accessory may not be available for more than 60 seconds. 
         [0048]    Furthermore, a headlamp may not remain on for more than 60 seconds, for example, during factory, transport, hibernate, and critical modes. During the transport, hibernate, in critical modes, and PowerPoint latched relays may also be forced off 
         [0049]    Various vehicle features including features associated with the vehicle alarm, keyless entry, infotainment systems, etc. may also be affected based on the KOL mode. In one example, a vehicle&#39;s perimeter alarm may be disabled when the KOL mode is either in factory or transport mode. In another example, RKE RF monitoring may be disabled during the transport mode. Similar monitoring may be reduced during the critical mode. 
         [0050]    During the factory, transport, hibernate, and critical modes, approach detection may be disabled to reduce drain on the battery. In this example, low-frequency (LF) antenna pulses may be disabled as well as radio frequency (RF) receivers. 
         [0051]    Passive entry may also be limited during the transport and critical modes. In one example, during the transport mode, passive entry may be completely disabled. Additionally or alternatively, during the critical mode, passive entry may be disabled with respect to each of the passenger doors while functionality may be maintained for the driver door. 
         [0052]    Other features such as tire pressure monitoring (TPM) may also be managed based on the KOL mode. During transport and critical modes, TPM may be disabled. During normal and hibernate modes, TPM may realize a reduced current drain strategy, including a slower pole rate, reduce polling periods, or no polling at all. 
         [0053]    During factory, transport and critical modes, welcome and farewell requirements may be adjusted. In this example the welcome and farewell requirements may be disabled, and/or may not remain on for more than 60 seconds, for example. In one example, this may include disabling park lamps and puddle lamps in response to detecting an approaching driver. In another example, map lights, backlighting, and other features that are typically turned on when a driver is approaching or leaving a vehicle, may be disabled. During the critical battery mode, a park lamp switch may be disabled in an effort to conserve battery power. 
         [0054]    The BCM  210  may also provide instructions to the TCU to reduce current drain during key off. These include a fast sleep feature and a limit wake feature. During the fast sleep feature, the TCU shall enter a deep sleep quickly after CAN sleep. During the limit wake feature, the TCU may only wake the CAN bus to issue requests such as vehicle unlock requests. Thus, the TCU shall not wake up the CAN bus unless necessary. 
         [0055]    During the transport mode, the BCM  210  may instruct the TCU to use the fast asleep feature. During the hibernate mode, the BCM  210  may instruct the TCU to use both the fast sleep and limit wake features. 
         [0056]    In a further effort to limit current drain during key off, the fuel-operated heater (FOH) for the vehicle may be disabled during the factory, transport, hibernate, and critical modes. Infotainment may also be limited during factory, transport, and critical modes. 
         [0057]    The functionality of other electrical elements of the vehicle, such as electronic mirrors, sunroofs, windows, etc., may be limited during transport and critical modes. These elements may be completely disabled, or have reduced performance levels. In another example, air suspension monitoring may be disabled during the factory and transport modes. 
         [0058]      FIG. 4  is an example flow chart for an example process  400  for the system  200 . The process  400  may start at block  405  where the BCM  210  may determine if the ignition status is OFF. If the ignition status is OFF, the process  400  proceeds to block  410 . 
         [0059]    At block  410 , the BCM  210  may receive the life cycle mode. As explained, this mode may be received and updated within the BCM  210  based on technician input or updates. The life cycle mode may be one of factory mode, transport mode, or normal mode. If the life cycle mode is in factory mode, the process  400  may proceed to block  420 . If the life cycle mode is in transport mode, the process  400  may proceed to block  425 . If the life cycle mode is in normal mode, the process  400  may proceed to block  430 . 
         [0060]    At block  440 , once the BCM  210  recognizes the life cycle mode to be in factory mode, the BCM  210  may determine that KOL mode is also to be in factory mode. As explained, factory mode enables most features for verification and testing, but may slow the response time of some of the features so as to reduce battery drain during manufacturing. 
         [0061]    At block  445 , once the BCM  210  recognizes the life cycle mode to be in transport mode, the BCM  210  may determine that KOL mode is also to be in transport mode. As explained, transport mode disables most features, or significantly limits features, so as to reduce as much battery drain during transport of the vehicle from the factory to the dealership. 
         [0062]    At block  430 , once the BCM  210  recognizes the life cycle mode to be in normal mode, the process may proceed to block  455  where the BCM  210  may determine whether the battery SOC is critical. This may be done by receiving a SOC and determining whether the SOC is below a predefined threshold. This may also be determined in response to receiving a battery critical signal from the battery or battery controller. If the BCM  210  determines that the SOC is below the threshold, the process  400  proceeds to block  460  where the BCM  210  may determine that the KOL mode is to be in critical mode. If not, the process  400  proceeds to block  465 . 
         [0063]    At block  465 , the BCM  210  may determine if the ignition status has been OFF for greater than a predefined amount of time such as five days. If the BCM  210  determines that the vehicle has been off for more than the predefined amount of time, the process  400  proceeds to block  470  where the BCM  210  may determine that the KOL mode is to be in hibernate mode. If not, the process  400  proceeds back to block  475  and the KOL mode remains in normal mode. 
         [0064]    The BCM  210  may continue to evaluate and update the KOL mode until the ignition status changes to RUN, START, or ACC. 
         [0065]    Accordingly, a key off energy consumption system is disclosed herein. The system is configured to control the various sleep ECUs in an efficient and consistent manner based on the ignition status, the life cycle mode, and/or various other factors such as SOC and time since ignition off. Moreover, the system provides for flexible and reconfigurable customizations based on the vehicle, make, model, user or dealer preferences, etc. By slowing or disabling various vehicle features based on the life cycle modes, the key off load is decreased, thus conserving battery charge and battery life span. 
         [0066]    Computing devices, such as the computing platform, processors, controllers, etc., generally include computer-executable instructions, where the instructions may be executable by one or more computing devices such as those listed above. Computer-executable instructions may be compiled or interpreted from computer programs created using a variety of programming languages and/or technologies, including, without limitation, and either alone or in combination, Java™, C, C++, Visual Basic, Java Script, Perl, etc. In general, a processor (e.g., a microprocessor) receives instructions, e.g., from a memory, a computer-readable medium, etc., and executes these instructions, thereby performing one or more processes, including one or more of the processes described herein. Such instructions and other data may be stored and transmitted using a variety of computer-readable media. 
         [0067]    Databases, data repositories or other data stores described herein may include various kinds of mechanisms for storing, accessing, and retrieving various kinds of data, including a hierarchical database, a set of files in a file system, an application database in a proprietary format, a relational database management system (RDBMS), etc. Each such data store is generally included with in a computing device employing a computer operating system such as one of those mentioned above, and are accessed via a network and any one or more of a variety of manners. A file system may be accessible for a computer operating system, and make the files stored in various formats. An RDBMS generally employs the Structure Query Language (SQL) in addition to language for creating, storing, editing, and executing stored procedures, such as PL/SQL language mentioned above. 
         [0068]    In some examples, system elements may be implemented as computer-readable instructions (e.g., software) on one or more computing devices (e.g., servers, personal computers, etc.) stored on computer readable media associated there with (e.g., disks, memories, etc.). A computer program product may comprise such instructions stored in computer readable media for carrying out the functions described herein. 
         [0069]    While exemplary embodiments are described above, it is not intended that these embodiments describe all possible forms of the invention. Rather, the words used in the specification are words of description rather than limitation, and it is understood that various changes may be made without departing from the spirit and scope of the invention. Additionally, the features of various implementing embodiments may be combined to form further embodiments of the invention.