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:

    Restoring the factory settings
    Press the and buttons simultaneously for approximately six seconds until the battery check lamp flashes twice. ...

    Important safety notes
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    Activating/deactivating ESP®
    WARNING The ESP® should not be switched off during normal driving. Disabling of the system will result in the following: - no restriction to engine torque - loss of system-supported ...