Problems with the rear window defroster
The rear window defroster has deactivated itself prematurely or cannot be activated.
•► Switch off any consumers that are not required, e.g. reading lamps or interior lighting.
When the battery is sufficiently charged, the rear window defroster is activated again automatically.
See also:
Switching on/off
The three red indicator lamps in the button indicate the heating level you have
selected.
If the battery voltage is too low, the seat heating may switch off.
Driver's and front-passenger ...
Mercedes-Benz M-Class
With the 2012 M-Class, Mercedes brings the comfortable, luxurious driving
experience of its flagship S-Class sedan to its most popular SUV.
If you don't like to be disturbed by the world around yo ...
Restarting the tire pressure monitor
WARNING
It is the driver's responsibility to set the tire
pressure to the recommended cold tire
pressure. Underinflated tires affect the ability
to steer or brake the vehicle. You might los ...