Unlocking the driver's door (mechanical key)
If the vehicle can no longer be unlocked with the SmartKey, use the mechanical key.
If you use the mechanical key to unlock and open the driver's door, the anti-theft alarm system will be triggered.
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
counterclockwise to position 1.
The door is unlocked.
Turn the mechanical key back and
remove it.
Insert the mechanical key into the
SmartKey.
See also:
Resetting the rear sunblind
Door control panel in rear
Turn the SmartKey to position 1 or 2 in the
ignition lock.
Pull switch 1 repeatedly until the rear
roller sunblind is fully closed.
Keep switch 1 pulled for ...
4MATIC (permanent four-wheel drive)
4MATIC ensures that all four wheels are
permanently driven. Together with ESP® and
4ETS, it improves the traction of your vehicle
whenever a drive wheel spins due to
insufficient grip.
WARNI ...
Cruise control lever
1 To activate or increase speed
2 To activate or reduce speed
3 To deactivate DISTRONIC PLUS
4 To activate at the current speed/last stored speed
5 To set the specified minimum distance ...
