The ball coupling must be cleaned if it becomes dirty or corroded.

– Remove rust on the ball of the ball coupling, e.g. with a wire brush.
– Remove dirt with a clean, lint-free cloth or a brush.
– After cleaning, lightly grease the ball of the ball coupling again.
– Check that the vehicle's trailer tow hitch is working properly.

Observe the note on care provided by the trailer manufacturer.

You can also have the maintenance work on the ball coupling and the trailer tow hitch carried out by a qualified specialist workshop.

Environmental note
Dispose of rags soaked in oil and grease in an environmentally responsible manner.