Defrosting the windshield
You can use this function to defrost the windshield or to defrost the inside of the windshield and the side windows.
You should only select the defrosting function until the windshield is clear again.
•► Turn the SmartKey to position 2 in the ignition lock.
•► To activate: press the
button.
The indicator lamp above the 
button
lights up.
The climate control system switches to the following functions:
- cooling with air dehumidification on
- high airflow
- high temperature
- air distribution to the windshield and
front side windows
- air-recirculation mode off
•► To switch off: press the
button.
The indicator lamp above the 
button
goes out. The previously selected settings
come into effect again. The cooling with air
dehumidification function remains on. Airrecirculation
mode remains deactivated.
or
•► Press the 
button.
The indicator lamp above the 
button
goes out. Airflow and air distribution are set
to automatic mode.
or
•► Automatic climate control: press temperature button 9 or 12 up or down.
Automatic climate control: press
temperature button 10 or 14 up or down.
or
•► Dual-zone automatic climate control:
press switch 11 up or down.
3-zone automatic climate control: press button 12 up or down
See also:
Vehicle data, GL 550
The data stated here refers specifically to a
vehicle with standard equipment. Consult an
authorized Mercedes-Benz Center for the
data for all vehicle variants and trim levels.
...
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