Mercedes-Benz C-Class-Saloon 2020 Owner's Manual page 242

Remove the cover cap from the ball head and
#
store it in a safe place.
Make sure that the ball on 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 switch 2 until the ball neck unlocks.
#
The ball neck will fold up under the rear
bumper.
Indicator lamp 1 will flash.
Push the ball neck in the direction of the
#
arrow until it engages audibly behind the
bumper.
Indicator lamp 1 will go out and the mes‐
sage on the multifunction display will disap‐
pear.
Observe the information about the displays on
the instrument cluster:
Indicator and warning lamps (
R
Display messages ( page 445)
/
R
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 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 498)
/
Requirements:
The ball neck is extended and engaged in a
R
securely locked position.
Internal use only
Driving and parking 239
Trailers with a 7-pin plug can be connected to
the vehicle with the following adapters:
Adapter plug
R
Adapter cable
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 stabilisation
R
Active Lane Keeping Assist
R
Parking Assist PARKTRONIC
R
Active Parking Assist
R
Blind Spot Assist or Active Blind Spot Assist
R
Drive Away Assist
R
Cross Traffic Alert
R
Reversing camera
R
360° camera
R