Mercedes-Benz GLC Owner's Manual page 309

Towing a trailer
306
Uncoupling 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.
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.
! Remove the installed adapter cable
before folding in the ball coupling. Other-
wise, damage may occur to the rear
bumper and the adapter cable.
Make sure that the transmission is in posi-
X
tion P.
Apply the electric parking brake.
X
Secure the trailer against rolling away.
X
Remove the trailer cable and decouple the
X
trailer.
Swinging the ball coupling in
! Do not attempt to speed the up the swing-
out procedure by applying additional pres-
sure with your foot. The system could oth-
erwise be mechanically damaged.
Swing the ball coupling back in using the
switch on the driver's door or tailgate, if you
are not using the trailer tow hitch.
Only release the ball coupling when its range
of movement is unobstructed.
Folding in using the switch in the driver's
door (all vehicles except plug-in hybrid
vehicles):
Make sure that the vehicle is stationary and
X
the trailer cables are disconnected.
Place the protective covering on the ball
X
coupling.
Shift the transmission to position P.
X
Switch the ignition on.
X
Pull switch : briefly.
X
After a short time the ball coupling swings
in under the rear bumper. It can take up to
seven seconds before the ball coupling visi-
bly swings in.
Until the ball coupling securely engages and
locks under the bumper:
indicator lamp ; flashes.
R
the Trailer coupling Trailer coupling extending...
R
sage appears in the multifunction display
The ball coupling swivels back into the out-of-
use position when:
switch : is pulled again briefly during
R
swivelling
you drive off before the
R
pling extending... pling extending...
disappeared from the multifunction display
the ball coupling encounters an obstacle in
R
the swinging range
extending... mes-
Trailer cou‐ Trailer cou‐
display message has