Problems with the occupant classification system
WARNING
If the 
indicator lamp
illuminates and remains illuminated when the weight of a typical
adult or someone larger than a small individual has been detected on the
passenger seat, do not
allow any occupant to use the passenger seat until the system has been repaired.
WARNING
If the indicator lamp does not
illuminate or remains out with the weight of a typical
12-month-old child in a standard child restraint or less, or is unoccupied, on
the front-passenger
seat, do not transport a child on the front-passenger seat until the system has
been repaired.
See also:
Problems with the engine
Problem
Possible causes/consequences and
Solutions
The engine does not start. The starter motor can be
heard.
• There is a malfunction in the engine electronics.
• ...
Problems with the rear window
defroster
The rear window defroster has deactivated
itself prematurely or cannot be activated.
Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery ...
Cleaning the steering wheel and gear or
selector lever
•► Thoroughly wipe with a damp cloth or use
leather care agents that have been
recommended and approved by Mercedes-
Benz. ...