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 ...

Menu overview
The number of menus shown depends on the optional equipment in the vehicle. Function 1 Trip menu 2 Navi menu (navigation instructions) 3 Audio menu 4 AMG menu in AMG vehicles 5 Telepho ...

Setting the side air vents
- To open/close: turn thumbwheel 3 up or down. ...