See also:

Decoupling a trailer
WARNING Do not disconnect a trailer with an engaged overrun brake. Otherwise, your hand could become trapped between the bumper and trailer drawbar. Do not disconnect a trailer with an eng ...

Increasing the volume
In some cases, the volume of the AUX device may be quieter or louder, or the usual maximum possible volume cannot be reached. On some devices, it is possible to adjust the volume separately. I ...

Problems with PARKTRONIC
Problem Possible causes/consequences and Solutions Only the red segments in the PARKTRONIC warning displays are lit. You also hear a warning tone for approximately two second ...