Fault Code 2568

Fault code 2568

Reverse light, trailer

Diagnostic conditions
- Ignition on
- Trailer hitch control module, internal function test
- Trailer detected through plug in trailer socket

Possible causes of fault
- Short circuit to ground or B+ in wiring; vehicle and/or trailer

NOTE: The electric circuit in rear fog lights and reversing lights is not monitored for open circuits, i.e. open circuit faults are not identified here. This was implemented in this way because some trailers do not have these lights.

Affected pins
Trailer hitch control module, plug A:
- Pin 3

Trailer hitch socket:
- Pin 8
- Pin 7 (North America)

Diagnosis/troubleshooting

NOTE:
- When troubleshooting, the status of the fault must be observed.
- Use a suitable test cable or a trailer, which is definitely OK, to check whether the fault is present on the vehicle.