See also:

Cleaning the trailer tow hitch
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 brus ...

Cleaning the wheels
Do not use acidic wheel cleaning products to remove brake dust. This could damage wheel bolts and brake components. Do not park the vehicle for an extended period straight after cleaning ...

Important safety notes
While the vehicle is in motion, the tire pressure loss warning system monitors the set tire pressure using the rotational speed of the wheels. This enables the system to detect significant pre ...