Mercedes-Benz GLK 300 4MATIC 2012 Owner's Manual page 222

Pull protective cap : down in the direction
X
of the arrow, out of the ball coupling recess.
Place protective cap : into the ball cou-
X
pling recess.
Pull protective cap ; off the lock in the
X
handwheel.
Insert key : into the ignition lock.
X
The red mark on the handwheel must be
aligned with the green area on the ball cou-
pling (fitting position). If this is not the case:
Turn key : in the direction of the arrow.
X
The key is released.
Pull handwheel ? away from the ball cou-
X
pling and turn it clockwise until it engages.
The green area on the ball coupling is
aligned with the red mark on the hand-
wheel.
Insert the ball coupling vertically in the
X
direction of the arrow into ball coupling
recess = until it engages.
Handwheel ? turns during this process.
Green marking A on the handwheel is
aligned with the green area on ball coupling
B.
To lock, turn key : to the stop in the direc-
X
tion of the arrow.
Remove key :.
X
Press protective cap ; onto the lock.
X
i
You can store the key in the ball coupling
recess in the luggage compartment.
Attach and engage the cover for the ball
X
coupling recess in the stowage well under
the luggage compartment floor.
Fold trailer power socket : down.
X
Towing a trailer
Z
219