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.

•► Switch off electrical consumers which you do not need, such as the rear window defroster or interior lighting.

    See also:

    Mercedes-Benz M-Class Owners Manual
    ...

    Correct use of the seat belts
    WARNING USE SEAT BELTS PROPERLY Seat belts can only work when used properly. Never wear seat belts in any other way than as described in this section, as that could result in serious i ...

    Setting climate control to automatic
    WARNING If you switch off the cooling function, the vehicle will not be cooled when weather conditions are warm. The windows can fog up more quickly. Window fogging may impair visibility ...