Defrosting The Windows - Mercedes-Benz M-Class Operator's Manual

Operating the climate control systems
150
MAX COOL is only operational when the
engine is running.
To activate: press the Ù button.
X
The indicator lamp in the button lights up.
To activate: press off-road button Ù
X
again.
The indicator lamp goes out. The previously
selected settings are restored.
When you activate MAX COOL, climate
control switches to the following functions:
maximum cooling
R
maximum airflow
R
air-recirculation mode on
R

Defrosting the windows

Windows fogged up on the inside
Activate the ¿/Á cooling with air
X
dehumidification function.
Activate automatic mode Ã.
X
If the windows continue to fog up, activate
X
the "windshield defrosting" function
( page 149).
Y
i
You should only select this setting until
the windshield is clear again.
Windows fogged up on the outside
Press the _ button repeatedly until the
X
P or O symbol appears in the
display.
i
You should only select this setting until
the windshield is clear again.
Rear window defroster
Activating/deactivating
The rear window defroster has a high current
draw. You should therefore switch it off as
soon as the rear window is clear. Otherwise,
the rear window defroster switches off
automatically after several minutes.
If the battery voltage is too low, the rear
window defroster may switch off.
Turn the SmartKey to position 2 in the
X
ignition lock ( page 157).
Y
Press the ¤ button.
X
The indicator lamp in the ¤ button lights
up or goes out.