See also:

Mercedes-Benz M-Class Owners Manual
...

Switching on DISTRONIC, storing andmaintaining the current speed
WARNING   The vehicle can be braked when DISTRONIC is activated. For this reason, deactivate DISTRONIC if the vehicle is to be set in motion by other means (e.g. in a car wash or by tow ...

Stability pact: the well-proven suspension of the R-Class
The Mercedes-Benz R-Class has a dynamically active and comfortable suspension with high safety reserves as standard. All model variants have steel springs, and in the 5+2-seater variants and the t ...