Coupling Up A Trailer - Mercedes-Benz M-Class Operator's Manual

Hole in the ball coupling and ball coupling recess
Insert the ball coupling horizontally into ball
X
coupling recess ? in the direction of the
arrow, until the hole in ball coupling A and
the hole in ball coupling recess B align.
Bolt
Slide bolt C all the way into the hole in the
X
ball coupling recess and the ball coupling.
Bolt and spring cotter
Secure the bolt using spring cotter D.
X
Correctly installed and secured ball coupling
Check the ball coupling, bolt and spring
X
cotter for correct installation.
G WARNING
If the ball coupling is not correctly installed
and secured, the ball coupling and the trailer
could come loose. As a result, you could
cause an accident.
Therefore, please observe the following:
Make sure that the ball coupling is secured
R
with the bolt supplied and the
corresponding spring cotter.
If the ball coupling cannot be correctly
R
mounted, remove the ball coupling. Under
these circumstances, the ball coupling
must not be used for trailer towing.
Have the entire trailer tow hitch checked at a
qualified specialist workshop.

Coupling up a trailer

G WARNING
Vehicles with air suspension program: While
you are coupling or decoupling a trailer, make
sure nobody locks or unlocks the vehicle and/
or opens or closes doors or the tailgate.
The vehicle's level could change and you
could endanger yourself and/or others as a
result.
Make sure that you do not operate the ADS
switch or the vehicle level control system
when coupling/decoupling the trailer.
I n f o r ma t i o n P r o v i d e d b y :
Trailer towing
Z
215