Document ID: chunk:federal_register_of_legislation:F2008C00030:body:0:p7
Version: federal_register_of_legislation:F2008C00030
Segment Type: other
Provision Reference: 
Character Range: 16175–19009

Cautions

       A vehicle equipped with an SCR system should be provided with caution lamps, which shall engage and inform the driver to take corrective measures when the following conditions are detected:

4.1.1 the urea solution injection rate is incorrect;

      4.1.2 the level of urea solution in the tank falls below the level required for 300km of normal operation; or

      4.1.3 the urea solution is of abnormal quality (not meeting the requirements of clause 2).

      4.2                     Warnings

     An additional warning lamp and an audible warning (buzzer) shall be activated under the following conditions:

     4.2.1 where no corrective action is taken within 300km after the first caution lamp is engaged under clause 4.1 in response to the detection of the conditions of clause 4.1.1;

     4.2.2 where no corrective action is taken within 300km after the first caution lamp is engaged under clause 4.1 in response to the detection of the conditions of clause 4.1.3; or

4.2.3 where the tank containing the urea solution is empty.

      4.3 The onboard diagnostics system of the vehicle shall record a fault code when any of the conditions of clause 4.2 are met.

      4.4 All caution and warning lamps shall be clearly visible from the driver's seating position.

      4.5 The vehicle shall be able to confirm that the SCR system is operating normally, prior to the start of driving.

      4.6 The reason for the triggering of the different caution and warning lamps shall be clear to the driver.

5 Restriction and recovery

      5.1 Subject to clause 5.2, where no corrective action is taken following the detection of conditions under clause 4.1.2 or 4.1.3, and the triggering of the warning lamp and buzzer under clause 4.2.2 or 4.2.3 subsequently occurs, the vehicle shall be constructed so that engine is unable to re-start after the engine is stopped by the key being switched to the 'ACC' or 'OFF' position.

      5.2 The vehicle shall allow the engine to re-start if the engine stops when the key is in the 'ON' position.

      5.3 The vehicle shall be constructed so that caution and warning systems are disengaged once the appropriate corrective action is taken.

      5.4 After being stopped under clause 5.1, the engine shall be able to be re-started once the tank has been refilled with a quantity of urea solution meeting the requirements of clause 2 sufficient for vehicle operation of more than 300 km.

6 Notice to driver

      6.1 The vehicle manufacturer shall include instructions regarding the following items in the vehicle's operation manual:

(a)  an explanation of the warning lamps and buzzer, including their meaning;

      (b) an explanation of the conditions under which the engine is unable to start again after caution is made;

      (c) a description of the