If the ball coupling has not engaged, it can become detached during driving and endanger other road users.
If the ball coupling has not engaged, the trailer can become detached.
The trailer hitch key is available.
With this number, you will receive a replacement key at a Mercedes-Benz service centre.
Depending on the vehicle equipment, the holder for the ball neck on the vehicle can be protected with a cover in the bumper.
The ball neck will lock automatically. Green mark on handwheel is aligned with green area on ball neck .
Only if the green mark on the handwheel is aligned with the green area on the ball neck is the ball neck securely engaged.
The ball neck is securely installed only if the ball neck can be locked and the key removed.
If you cannot remove the key, the ball neck may be dirty.
If you still cannot lock the ball neck after cleaning it, the trailer hitch is damaged.
Safe trailer operation is not guaranteed. The ball neck must no longer be used for trailer operation.