Trailer Hitch

Fault code 1299

Gateway

Diagnostic conditions
- Ignition on
- Trailer hitch control module, internal function test

Possible causes of fault
- To localise the fault, read out the fault memory for the 'gateway control module' (please read out fault memory)
- No message from gateway on CAN comfort (no signal/communication)
- Trailer hitch control module faulty

Affected pins
Trailer hitch control module, plug B:
- Pin 8 'CAN comfort (low)'
- Pin 7 'CAN comfort (high)'

Diagnosis/troubleshooting