Problems with the rear window defroster

The rear window defroster has deactivated itself prematurely or cannot be activated.

are not 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:

    Problems with the SmartKey
    ...

    AMG vehicles
    Drive program selector with manual drive program For further information on the automatic drive program. Only change from automatic drive program C, S or S+ to manual drive program M when ...

    Important notes on use
    To function properly, BlueTEC exhaust gas aftertreatment must be operated with the reducing agent DEF. When the DEF supply has almost run out, the Check Additive See Operator's Manual message ...