You can connect accessories with a maximum power consumption of 180 W to the permanent power supply.
You must not charge a trailer battery using the power supply.
The trailer socket of your vehicle is equipped at the factory with a permanent power supply.
The permanent power supply is supplied via trailer socket pin 9.
A qualified specialist workshop can provide more information about installing the trailer electrics.
SmartKey
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Useful information
This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
...
Adjusting the multicontour seat
1 To adjust the thigh cushion
2 To adjust the backrest contour in the
lumbar region
3 To adjust the backrest contour in the
upper back region
4 To adjust the side bolsters of the seat
backrest ...