Mercedes-Benz GLC 200 4MATIC Owner's Manual page 317

314 Driving and parking
In the following circumstances, a message may
appear on the driver's display even if the trailer
has been connected correctly:
LEDs have been installed in the trailer lighting
R
system.
The current has fallen below the trailer lighting
R
system's minimum current (50 mA).
%
Accessories can be connected to the perma-
nent power supply up to 180 W and to the
power supply that is switched on via the igni-
tion lock.
Uncoupling a trailer
& WARNING Risk of being crushed and
becoming trapped when uncoupling a
trailer
When uncoupling a trailer with an engaged
inertia-activated brake, your hand may
become trapped between the vehicle and the
trailer drawbar.
Do not uncouple trailers with an engaged
#
overrun brake.
* NOTE Damage during uncoupling with an
engaged overrun brake
The vehicle may be damaged if you uncouple
with an engaged overrun brake.
Do not uncouple trailers with an engaged
#
overrun brake.
& WARNING Risk of becoming trapped when
disconnecting the trailer cable
Vehicles with level control system: the vehicle
may lower when you disconnect the trailer
cable.
This could result in other people becoming
trapped if their limbs are between the vehicle
body and the tyres or underneath the vehicle.
Make sure nobody is underneath the
#
vehicle or in the immediate vicinity of the
wheel arches when you disconnect the
trailer cable.
* NOTE Damage to the rear bumper from
installing adapter cables or adapter plugs
The following parts could be damaged when
swiveling the ball neck fully electrically:
Bumper
R
Adapter cable
R
Adapter plug
R
Always remove the adapter cable or
#
adapter plug before swiveling the ball
neck fully electrically.
Secure the trailer against rolling away.
#
Disconnect the electrical connection between
#
the vehicle and the trailer.
Uncouple the trailer.
#
Place the cover cap on the ball head.
#
%
Trailers with LED lighting: after uncoupling the
trailer, switch the vehicle on and then off
again.