See also:

System self-test
After you have switched on the ignition, the system carries out a self-diagnosis. WARNING A malfunction in the system has been detected if one of the following conditions occurs:  - ...

Using KEYLESS-GO
The KEYLESS-GO key must be outside the vehicle. All the doors must be closed. Touch recessed sensor surface 1 on the door handle until the side windows and the panorama roof with power tilt/s ...

Cleaning genuine wood and trim elements
– Wipe the wooden trim and trim pieces with a damp, lint-free cloth, e.g. a microfiber cloth. – Heavy soiling: use car care and cleaning products recommended and approved by Mercedes-Benz. ...