See also:

Clearing the memory of the integrated garage door opener on the rear-view mirror
X Turn the SmartKey to position 2 in the ignition lock. X Press and hold transmitter buttons 2 and 4 for approximately 20 seconds until indicator lamp 1 flashes rapidly. The memory is cleared. ...

General notes
WARNING All categories of messages contain important information which should be taken note of and, where a malfunction is indicated, addressed as soon as possible at an authorized Mercedes- ...

Maximum gradient-climbing capability
For good road surface conditions, the maximum gradient-climbing capability is 100%, which corresponds to an approach/departure angle of 45°. Note that the vehicle's gradient-climbing capability ...