Troubleshooting Anti-lock Brake System (ABS) Indicator Light

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Filed Under (repair and maintenance tips) by admin on 24-06-2010

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Temporary Driving Conditions: 1. The ABS indicator light comes on and the ABS con- trol unit memorizes the diagnostic trouble code (DTC) under certain conditions. NOTE: The DTCs are explained on page 19-56. • The tire(s) adhesion is lost due to excessive cor- nering speed. DTC: 5, 5-4, 5-8. • The vehicle loses traction when starting from a stuck condition on a muddy, snowy, or sandy road. DTC: 4-1, 4-2, 4-4, 4-8. • When the parking brake is applied for more than 30 seconds while the vehicle is being driven. DTC: 2-1. • The vehicle is driven on an extremely rough road. The ABS is OK, if the ABS indicator light goes off after the engine is restarted.

Audi WARNING LAMP FOR BRAKE SYSTEM

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Filed Under (Audi) by admin on 24-05-2010

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FAULT: Warning lamp for the brake system comes on after cold start. CAUSE: In the ABS control unit is a poor recognition of low voltage and the acoustic and optical warning is activated by unsatisfactory indication suppression in the instrument cluster.
SOLUTION: Fit the ABS unit with a low voltage relay.