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 trunk lid.
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
trunk lid 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:
Problems with the seat heating
The seat heating has switched off
prematurely or cannot be switched on. The
vehicle's electrical system voltage is too low
because too many electrical consumers are
switched on.
Switch off e ...
System self-test
The indicator lamp illuminates
when you:
• turn the SmartKey to position 1 or 2 in the ignition lock
• press the KEYLESS-GO Start/Stop button once or twice
If an adult occupant is properly s ...
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 vehi ...