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 ...

General notes
USA only: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. this device must ...

Adding DEF
WARNING Make sure - DEF does not come into contact with skin, eyes, or clothing - to keep DEF out of the reach of children If you and/or others have come into contact with DEF: - If DEF has gott ...