Steering Wheel Switch

Fault Code 0457

Vehicle electrical system control module (CAN comfort)

Diagnostic conditions
- Ignition on
- Internal functional check on electronic unit in steering column switch

Possible cause of fault
- No communication with vehicle electric system control module

Affected pins
Electronic unit in steering column switch plug A:
- Pin 8 CAN comfort (low)
- Pin 9 CAN comfort (high)

Diagnosis/troubleshooting

Work Instruction 1: