DTC B12EF-53: Trailer Fog Lamp - Deactivated: Action

WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

This DTC may be set by a fault within the trailer.
The outputs on the towbar control module can only be reactivated twice. If an output has been deactivated three times, the module will have to be replaced to restore functionality.

Refer to the electrical circuit diagrams and check the trailer fog lamp circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Using the Jaguar Land Rover approved diagnostic equipment, perform routine - Enable Protected Outputs (0x205E). Clear the DTCs and retest