Mercedes-Benz GLC Series Operator's Manual page 233

Install and secure the ball coupling as
#
described in the ball coupling manufac‐
turer's installation instructions.
When the ball coupling has been instal‐
#
led, ensure that it is correctly secured
before every trip.
Requirements:
The vehicle is secured against rolling away.
R
Attaching the ball neck
Remove cover 1 from the ball neck mount
#
in the direction of the arrow.
Store cover 1 so that it cannot move
#
around.
Observe the manufacturer's installation
#
instructions.
Observe the notes on loading the vehicle.
Coupling/uncoupling a trailer
& WARNING Risk of injury from the vehicle
level being changed
Vehicles with level control system: the
vehicle level may be changed unintentionally,
e.g. by other persons. You may become trap‐
ped if you couple up or uncouple a trailer
while the vehicle level is changing. In addi‐
tion, other people could become trapped if
their limbs are between the vehicle body and
the tires or underneath the vehicle.
When coupling up or uncoupling a trailer,
make sure that:
The doors or tailgate are not opened or
#
closed.
Driving and parking 231
You do not initiate the level control sys‐
#
tem and do not operate the DYNAMIC
SELECT switch.
Do not lock or unlock the vehicle.
#
Requirements:
The vehicle is secured with the electric park‐
R
ing brake.
The transmission is in position j.
R
The trailer will be correctly detected by the vehi‐
cle only if the following conditions are met:
The trailer is connected correctly.
R
The trailer lighting system is in working
R
order.
The functions of the following systems will be
affected by a correctly connected trailer:
ESP ® trailer stabilization
R
Active Lane Keeping Assist
R
Parking Assist PARKTRONIC
R
Active Parking Assist
R
Blind Spot Assist or Active Blind Spot Assist
R