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:
Qualified specialist workshop
An authorized Mercedes-Benz Center is a qualified specialist workshop. It has
the necessary specialist knowledge, tools and qualifications to correctly carry
out the work required on your vehicle. ...
Unlocking and opening doors from inside
You can open a door from inside the vehicle
even if it has been locked. You can only open
the rear doors from inside the vehicle if they
are not secured by the child-proof locks.
Only open the ...
Derestricting the shift range
Briefly press the selector lever
to the right towards D+.
or
Pull the right-hand steering wheel
paddle shifter.
The shift range is derestricted. ...