Mercedes-Benz GLK 300 4MATIC 2012, Owner'S Manual

Page: 223 / 381

Coupling up a trailer
G
WARNING
If you uncouple a trailer with an engaged over-
run brake, you could trap your hand between
the vehicle and the trailer drawbar. This poses
a risk of injury.
Do not uncouple a trailer with an engaged
overrun brake.
X
Make sure that the transmission is in posi-
tion P.
X
Engage the parking brake.
X
Position the trailer level behind the vehicle.
X
Couple up the trailer.
X
Establish the electric connection between
the vehicle and the trailer.
X
Check that the trailer lighting system is
working.
Uncoupling a trailer
G WARNING
Vehicles with level control:
If you disconnect the trailer cable, the vehicle
is lowered. This can cause you or others to
become trapped between the vehicle body
and tyres, or underneath the vehicle. This
poses a risk of injury.
Make sure that no-one is in the immediate
vicinity of the wheel arch or underneath the
vehicle when disconnecting the trailer cable.
!
Do not disconnect a trailer with an
engaged overrun brake. Otherwise, your
vehicle could be damaged by the rebound-
ing of the overrun brake.
X
Make sure that the transmission is in posi-
tion P.
X
Engage the parking brake.
X
Secure the trailer against rolling away.
X
Remove the trailer cable and decouple the
trailer.
Removing the ball coupling
X
Pull the protective cap off the lock in the
handwheel.
X
Use the key to unlock the lock in the hand-
wheel.
X
Hold the ball coupling. Pull the handwheel
away from the ball coupling and turn it
clockwise until it engages.
The green area on the ball coupling is
aligned with the red mark on the hand-
wheel.
X
Pull the ball coupling downwards to
remove.
X
Clean the ball coupling if it is dirty.
Information on cleaning and care of the trailer
tow hitch can be found under (
Y
page 321).
Storing the ball coupling
G WARNING
Never transport an unsecured ball coupling in
the interior of the vehicle.
Otherwise, vehicle occupants could be
injured by the ball coupling being thrown if
you:
R
brake sharply
R
change direction suddenly
R
have an accident
X
Open the stowage well under the luggage
compartment floor.
X
Remove the cover from the ball coupling
recess.
X
Remove the protective cap from the ball
coupling recess.
X
Press the protective cap into the ball cou-
pling recess until it engages.
X
Make sure that the protective cap is firmly
in place.
X
Store the ball coupling with the key inser-
ted in the ball coupling recess.
220
Towing a trailer
Driv
ing
and
pa
rk
ing