Important information
WARNING
When the climate control system is
deactivated, the outside air supply and
circulation are also deactivated. Only choose
this setting for a short time. Otherwise the
windows could fog up, impairing visibility and
endangering you and others.
Switch on climate control
primarily using
the 
button
See also:
Cleaning the steering wheel and gear orselector lever
► Thoroughly wipe with a damp cloth or
use
leather care agents that have been
recommended and approved by Mercedes-
Benz. ...
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.
...
Problems with the occupant classification system
Problem
The indicator lamp illuminates and
remains illuminated. The person on the front-passenger seat:
has the weight of a typical adult
has been determined by the system not to be a child. ...