Mercedes-Benz C-Class Saloon Owner's Manual page 263

Pull the ball neck in the direction of the
#
arrow until it engages audibly in a vertical
position.
Indicator lamp 1 on the ball neck release
switch goes out.
If the ball neck is not securely locked in
place, the Check trailer hitch lockdisplay
message appears on the multifunction dis‐
play.
Remove the cover from the ball head and
#
store it in a safe place.
Make sure that the ball of the ball neck is clean.
Check that it is either greased or dry (grease
free), depending on the instructions for the
trailer.
Folding the ball neck in
Pull release switch 2 until the ball neck
#
unlocks.
The ball neck folds up under the rear
bumper.
Indicator lamp 1 flashes.
Press the ball neck in the direction of the
#
arrow until it engages audibly behind the
bumper.
Indicator lamp 1 goes out and the message
on the multifunction display disappears.
Observe the information on the displays on the
instrument cluster:
Warning and indicator lamps (
→
R
Display messages ( page 448)
→
R
Coupling up/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 tyres or underneath the vehicle.
When coupling up or uncoupling a trailer,
make sure that:
The doors or tailgate are not opened or
#
closed.
You do not initiate the level control sys‐
#
tem and do not operate the DYNAMIC
SELECT switch.
Do not lock or unlock the vehicle.
#
page 507)
Requirements:
the ball neck must be extended and engaged
R
in the securely locked position
Driving and parking 261