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:
General notes
If you cannot lock or unlock the vehicle with
the SmartKey, either the battery in the
SmartKey is discharged, the SmartKey is
faulty or the starter battery is discharged.
Check the battery in ...
Cleaning the exterior lighting
Clean the plastic lenses of the exterior lights with a wet sponge and
a mild cleaning agent, e.g. Mercedes-Benz car shampoo or cleaning cloths.
Only use cleaning agents or cleaning cloths ...
Storing and maintaining the current
speed
You can store the current speed if you are
driving faster than 20 mph (30 km/h).
Accelerate the vehicle to the desired
speed.
Briefly press the cruise control lever
up 1 or down 2.
Remove ...
