Anti-Lock Brake System, Diagnosis

Fault memory
Overview of possible faults with ABS 5.3 and ABS / TC 5.3

- Control module faulty
- Rear left speed sensor, signal implausible
- Front right speed sensor, signal implausible
- Rear right speed sensor, signal implausible
- Front left speed sensor, signal implausible
- Rear left speed sensor wire, open circuit/short to ground/short to B+
- Front right speed sensor wire, open circuit/short to ground/short to B+
- Rear right speed sensor wire, open circuit/short to ground/short to B+
- Front left speed sensor wire, open circuit/short to ground/short to B+
- Valve supply voltage
- Return pump
- Stop-light switch
- Incorrect gear wheel
- Undervoltage
- Intake valve
- Switch-over valve
- Version coding
- Electrical connection between TC and Tiptronic
- Engine rpm information missing
- Electrical connection between TC and DME (MMI)
- Electrical connection between TC and DME (MMR)
- Fault stored in DME control module