Activating/deactivating
WARNING
Any accumulation of snow and ice should be
removed from the rear window before driving.
Visibility could otherwise be impaired, endangering you and others.
The rear window defroster has a high current draw. You should therefore switch it off as soon as the window is clear as it only switches off automatically after several minutes.
http://strategic-human-resource.com/If the battery voltage is too low, the rear window defroster may switch off.
•► Turn the SmartKey to position 2 in the ignition lock.
•► Press the 
button.
The indicator lamp above the 
button
lights up or goes out.
See also:
Refrigerant of the air-conditioning system
The air-conditioning system is filled with R134a refrigerant and a special PAG
lubricant.
Never use refrigerant R 12 (CFC) or mineral lubricants. Otherwise, you could
damage the air-conditioni ...
Effortlessly superior: new four-cylinder diesel engine and proven V6
powerplants
State-of-the-art powerplants ensure an exceptionally high level of ride
comfort and impressive performance right across the GLK range. Plus
fuel-consumption figures are low, as is the emission cou ...
Automatic transmission
Shift the transmission to position P.
The transmission position display in the
multifunction display shows P.
You can also start the engine when the
transmission is in position N. ...