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 ...

Adaptive backrest (AMG vehicle)
You can adjust the contour of the front seat backrests individually so as to provide optimum support for your back. Adaptive backrest (AMG vehicle) 1 To adjust the upper back support 2 To adj ...

Important safety notes
For reasons of safety, Mercedes-Benz recommends that you drive with the lights switched on even during the daytime. In some countries, operation of the headlamps varies due to legal requiremen ...