Rear Window Defroster - Mercedes-Benz 2002 M-Class Operator's Manual

Rear window defroster

Turn the key in steering lock to position 2.
To select:
Press the F button in the control panel of the
automatic air conditioner. The indicator lamp in the
button illuminates.
To cancel:
Press the F button in the control panel of the
automatic air conditioner. The indicator lamp in the
button goes out.
Notes:
Heavy accumulation of snow and ice should be removed
before activating the defroster.
Automatic climate control
Instruments
Operation
and controls
121
Instrument
Driving
cluster display
The rear window defroster uses a large amount of power.
To keep the battery drain to a minimum, turn off the
defroster as soon as the rear window is clear.
The defroster is automatically turned off after
approximately 6–17 minutes of operation depending on
the outside temperature and vehicle speed.
If several power consumers are turned on
simultaneously, or the battery is only partially charged,
it is possible that the defroster will automatically turn
itself off. When this happens, the indicator lamp inside
the switch starts blinking.
As soon as the battery has sufficient voltage, the
defroster automatically turns itself back on.
Practical hints Car care
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data