See also:

Towing the vehicle with the rear axle raised
Only possible on vehicles without 4MATIC. When towing your vehicle with the rear axle raised, it is important that you observe the safety instructions. The ignition must be switched off if ...

Important safety notes
WARNING Always remember that you must concentrate primarily on driving the vehicle. The driver's concentration must always be directed primarily at road traffic. For your own safety and tha ...

High outside temperatures
If DEF heats up to over 122 °F (50 °C ) for extended periods, e.g. as a result of direct sunlight on the DEF reservoir, DEF can decompose. Ammonia vapors develop as a result. WARNING When o ...