Making adjustments in 5 mph (Canada: 10 km/h) increments
Briefly press the cruise control
lever
beyond the pressure point, up 1 for a
higher speed or down 2 for a lower speed.
The last speed stored is increased or
reduced.
See also:
The windshield wipers are obstructed
Leaves or snow, for example, may be
obstructing the windshield wiper movement.
The wiper motor has been deactivated.
For safety reasons, you should
remove the SmartKey from the ignition lock.
...
2010 Mercedes-Benz GLK-Class Review
In many parts of the world, Mercedes-Benz cars and trucks are sought for
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Refrigerant of the air-conditioningsystem
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-condition ...