Defrosting The Windows - Mercedes-Benz 2015 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 con-
trol 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 dis-
play.
i
You should only select this setting until
the windshield is clear again.
Rear window defroster
General notes
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 auto-
matically after several minutes.
If the battery voltage is too low, the rear win-
dow defroster may switch off.
Switching on/off
Turn the SmartKey to position 2 in the igni-
X
tion lock ( page 157).
Y
Press the ¤ button.
X
The indicator lamp in the ¤ button lights
up or goes out.