Mercedes-Benz GLE Operator's Manual page 220

Towing a trailer
218
Always install and secure the ball coupling as
described. Before every journey, ensure that
the ball coupling is secured with the bolt and
the corresponding spring cotter.
G
WARNING
If the ball coupling is not installed and secured
correctly the trailer may come loose. There is
a risk of an accident.
Install and secure the ball coupling as descri-
bed in the ball coupling installation instruc-
tions. Make sure that the ball coupling is
installed and secured correctly before every
journey.
Pull protective cap : in the direction of the
X
arrow, out of the ball coupling recess.
Stow protective cap : so that it cannot be
X
thrown around.
Observe the loading guidelines (
and the safety notes regarding stowage
spaces ( page 288).
Y
Insert the ball coupling horizontally into ball
X
coupling recess ; in the direction of the
arrow until the holes in ball coupling = are in
line with the holes in ball coupling recess ?.
page 288)
Y
Slide bolt A into the hole in the ball coupling
X
recess and the ball coupling to the stop.