See also:

Problems with PARKTRONIC
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Stowage compartments in the rear
Stowage compartment in the rear ! Do not sit or lean your bodyweight on the armrests when they are folded out as you could damage them. ! Close the cover of the stowage compartment before fold ...

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 ...