See also:

The windshield wipers are inoperative
The windshield wiper drive is malfunctioning. - Select another wiper speed on the combination switch. - Have the windshield wipers checked at a qualified specialist workshop. ...

Assembling the ball coupling
Mercedes-Benz recommends that you have the ball coupling assembled at a qualified specialist workshop. Only a qualified specialist workshop has the necessary specialist knowledge and tool ...

Problems with the seat heating
The seat heating has switched off prematurely or cannot be switched on. The vehicle's electrical system voltage is too low because too many electrical consumers are switched on. X Switch off ...