If and when
Frequently asked questionsIndicator lamps
First read and observe the introductory information
and safety warnings
Lit up
Possible cause
Solution
The vehicle is being held by the electronic parking
brake.
Switch off the Auto Hold function if necessary .
...
Nuts and bolts
Loosen and tighten bolts and securing nuts for covers and
housings diagonally.
Avoid canting particularly sensitive parts such as comtrol
motor with control unit. Loosen and tighten them diagonally in
stages.
...
Assembly overview - towing bracket socket
1 -
Trailer detector control unit -J345-
Removing and installing
→ Chapter
2 -
Retaining frame
For trailer detector control unit -J345-
3 -
Trailer socket -U10-
...