Mechanical key
General notes
If the vehicle can no longer be locked or 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 .
There are several ways to turn off the alarm:
■ To turn the alarm off with the
SmartKey: press the 
or
button
on the SmartKey.
or
■ Insert the SmartKey into the ignition lock.
or
■ To deactivate the alarm with KEYLESSGO:
press the Start/Stop button in the
ignition lock. The SmartKey must be in the
vehicle.
or
■ Lock or unlock the vehicle using KEYLESSGO.
The SmartKey must be outside the vehicle.
If you unlock the vehicle using the mechanical key, the fuel filler flap will not be unlocked automatically.
■ To unlock the fuel filler flap: insert the SmartKey into the ignition lock.
Removing the mechanical key
1 Release catch
2 Mechanical key
■ Push release catch 1 in the direction of
the arrow and at the same time remove
mechanical key 2 from the SmartKey.
See also:
Off-road driving systems
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 d ...
Parking position for the exterior
mirror on the front-passenger side
Setting/storing the parking position
Using reverse gear
1 Left-hand exterior mirror
2 Right-hand exterior mirror
3 Adjustment button
4 Memory button
You can position the front-passenger side
...
Operation
Notes on driving
- If the vehicle is heavily laden, check the tire
pressures and correct them if necessary.
- When parking your vehicle, make sure that
the tires do not get deformed by the curb
o ...