Mercedes-Benz GL-Class

GL-Class is a 4-door, 7-passenger luxury sport-utility.
See also:
Removing the ball coupling
Observe the manufacturer's installation instructions.
Press the protective cap into the ball coupling recess.
Make sure that the protective cap is firmly in place.
...
Engine
Display messages
Possible causes/consequences and
Solutions
The yellow Check Engine warning lamp lights up while the engine is
running.
There may be a malfunction ...
Storing and maintaining the current speed
You can store the current speed if you are
driving faster than 20 mph (30 km/h).
Accelerate the vehicle to the
desired speed.
Briefly press the cruise control
lever up 1 or down 2.
Remove ...
