Mercedes-Benz GLC Coupe 2016, Owner'S Manual

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To ensure reliable operation of the failure indi-
cator, each LED chain in the trailer lighting must
be guaranteed a minimum current of 50 mA.
Trailer with 7-pin connector
General notes
Trailer with 7-pin connector: you can connect
to the 13-pin socket on the ball coupling using
an adapter or, if necessary, an adapter cable.
Both can be obtained at a qualified specialist
workshop.
Fitting the adapter
!
Make sure that there is sufficient cable play
so that the cable cannot become detached
when cornering.
!
Remove the installed adapter cable before
folding in the ball coupling. Otherwise, dam-
age may occur to the rear bumper and the
adapter cable.
X
Open the socket cover.
X
Insert the connector with lug : into groove
= on the socket.
X
Turn bayonet connection ; clockwise to the
stop.
X
Let the cover engage.
X
If you are using an adapter cable, secure the
cable to the trailer with cable ties.
Problems with trailer towing
Problem
Possible causes/consequences and M M Solutions
The unlocked ball cou-
pling cannot be
engaged.
X
Consult a qualified specialist workshop.
The ball coupling does
not unlock even though:
R
the vehicle is station-
ary
R
no trailer cable is con-
nected
R
the release switch to
unlock the ball cou-
pling has been pulled
for more than a sec-
ond
The on-board voltage is too low.
X
Start the engine.
If the ball coupling still does not unlock:
X
Consult a qualified specialist workshop.
Bicycle rack
General notes
When attached by clamping onto the ball cou-
pling on the trailer tow hitch, the maximum pay-
load is 75 kg. You can transport up to three
bicycles.
The payload is calculated from the weight of the
bicycle rack and the load of the bicycle rack.
Bicycle rack
217
Driving
and
parking
Z