Mercedes-Benz S-Class

S-Class is a 4-door, 5-passenger luxury sedan, or luxury sports sedan.
See also:
Problems with the SmartKey
Problem
Possible causes/consequences and
Solutions
You cannot lock or unlock the vehicle using the
SmartKey.
The SmartKey battery is discharged or nearly discharged.
- ...
Special seat belt retractor
All seat belts except the driver's seat belt are
equipped with a special seat belt retractor.
When activated, the special seat belt
retractor ensures the seat belt will not
slacken once the chi ...
Removing the mechanical key
Push release catch 1 in the direction of
the arrow and at the same time, remove
mechanical key 2 from the SmartKey. ...
