Mercedes-Benz C-Class Saloon 2022 Owner's Manual page 303

300 Driving and parking
Folding the ball neck out
Secure the vehicle against rolling away.
#
Keep the swivel range clear.
#
Remove the trailer cable or adapter plug.
#
2
Pull switch until the ball neck unlocks.
#
The ball neck will fold out from under the rear
bumper.
Indicator lamp 1 will flash.
Pull the ball neck in the direction of the arrow
#
until it engages audibly in a vertical position.
1
Indicator lamp on the ball neck release
switch will go out.
If the ball neck is not securely locked in place,
the message Trailer coupling Check lock
appear on the driver's display.
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 message
on the driver display will disappear.
Observe the information about the displays on the
driver's display:
Indicator and warning lamps (
R
Display messages (
/
R
will
page 540)
/
page 464)