Locking the vehicle (mechanical key)
If the vehicle can no longer be locked with the SmartKey, use the mechanical key.
- Open the driver's door.
- Close the front-passenger door, the rear doors and the tailgate.
- Press the locking button ().
- Check whether the locking knobs on the front-passenger door and the rear doors are still visible. Press down the locking knobs by hand, if necessary.
- Close the driver's door.
- Take the mechanical key out of the SmartKey ().
- Insert the mechanical key into the lock of the driver's door as far as it will go.

- Turn the mechanical key clockwise as far as it will go to position 1.
- Turn the mechanical key back and remove it.
- Make sure that the doors and the tailgate are locked.
- Insert the mechanical key into the SmartKey.
If you lock the vehicle as described above, the fuel filler flap is not locked.
The antitheft alarm system is not armed.
See also:
Overview of occupant safety
In this section, you will learn the most
important facts about the restraint system
components of the vehicle.
The restraint system consists of:
• seat belts
• child restraint systems
• LATCH- ...
INTERIOR
In keeping with E350's stunning exterior, the well-appointed interior was
equally gorgeous. It stuns with bright chrome accents on the instrument cluster
and center stack and an optional burl waln ...
NECK-PRO luxury head restraints
If you have difficulty resetting the NECKPRO
luxury head restraints, have this work
carried out at a qualified specialist
workshop, e.g. an authorized Mercedes-
Benz Center.
► Remove res ...
