See also:

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 ...

Important safety notes
The rear view camera is an optical parking aid. It shows the area behind your vehicle in the COMAND display. WARNING Make sure that no persons or animals are in the maneuvering range. Other ...

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 it, ...