Patent ID: 8311507

Claim:
A telematics system for a vehicle with a main power supply, the telematics system comprising: a secondary power supply; a telematics unit that provides vehicle information, the telematics unit including a wireless communication device that selectively provides two-way communication between the telematics unit and an external device; a power management system that selectively causes the telematics unit to be powered by at least one of the main power supply and the secondary power supply; a controller that controls the power management system such that the telematics unit is powered by the secondary power supply for communication between the telematics unit and the external device when the telematics unit is electrically disconnected from the main power supply; and a counter that counts a number of failed attempts to establish the wireless communication link, wherein the controller causes the telematics unit to reduce power consumption if the number of failed attempts equals a predetermined amount.