Mercedes-Benz R-Class Owner's Manual page 251

Operation
Care
Cleaning the reversing camera*
Camera lens
1
Use clear water and a soft cloth to clean
X
camera lens 1.
!
Do not clean the camera lens and the area
around the reversing camera with:
high-pressure cleaning equipment
R
a dry cloth and a lot of pressure
R
corrosive cleaning products
R
You could otherwise damage the reversing
camera.
248
Trailer coupling
The ball coupling must be cleaned if it
becomes dirty or corroded.
Remove any rust using a wire brush.
X
Remove dirt with a clean, lint-free cloth or
X
a brush.
!
Do not clean the ball coupling with a high-
pressure cleaner. Do not use solvents.
Ball neck head
1
Locking balls
2
Guide pin
3
Guide faces
4
Release lever
5
Protective cap
6
Lightly oil or grease positions
X
the ball coupling recess of the vehicle after
cleaning.
Treat the lock under protective cap
X
an acid- and resin-free oil.
Check that the vehicle's trailer coupling is
X
working properly.
!
Observe the note on care provided by the
trailer manufacturer.
i
Maintenance of the ball coupling and
trailer coupling can also be performed by
any Mercedes-Benz Service Centre.
H Environmental note
Dispose of oily and greasy cloths in an envi-
ronmentally-responsible manner.
1 to 6 and
6 with
* optional