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 ...

Engines and transmissions in detail: The SUV efficiency champion
The third-generation M-Class sets a new benchmark in the SUV segment. The low fuel consumption figures and exemplary emissions figures are particularly impressive. Compared with the outgoing model ...

Redialing
The on-board computer saves the last names or numbers dialed in the redial memory. – Press the or button on the steering wheel to select the Tel menu. – Press the button to switch to the r ...