Mercedes-Benz CLK-Class Owner's Manual page 264

P 31.10-2453-31
3 Ball coupling mounting
At the mark on the bumper, guide the
ball coupling vertically into ball cou-
pling mounting 3 until it engages.
The handwheel turns in such a way that
green area 4 on the handwheel is
aligned with the white area on the ball
coupling.
P 31.10-2454-31
4 Green area
Turn the key in the direction of the ar-
row (to lock).
Remove the key and press on the cover
cap.
Fold out the socket under the vehicle.
i
It is best to remove the ball coupling if the
trailer tow hitch is no longer required.
Operation
Trailer towing
G
Risk of accident
The ball coupling is only correctly fitted once
the white area on the ball coupling and the
green area on the handwheel are aligned
and the key can be removed. Unless it is fit-
ted properly, the ball coupling could work
loose.
When the vehicle is towing a trailer, the ball
coupling must be locked and the key re-
moved. Only then is it guaranteed that the
ball coupling is secure and cannot work
loose while the vehicle is being driven.
If the ball coupling cannot be locked and the
key cannot be removed, remove the ball
coupling and clean it ( page 271). If you
still cannot fit (lock) the ball coupling after it
has been cleaned, remove it. In such cases,
the trailer tow hitch must not be used for
towing because its safety cannot be guaran-
teed.
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