See also:

The mbrace system
The mbrace system provides different services, e.g.: • automatic and manual emergency call • Roadside Assistance call • MB Info call To adjust the volume during an mbrace call, proceed as foll ...

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
WARNING Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are mo ...