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:
R 350 BlueTEC 4MATIC: as clean as a petrol model
With the R 350 BlueTEC 4MATIC, Mercedes-Benz is offering one of the cleanest
diesel models in the world. The V6 engine achieves an output of 155 kW (211 hp)
and substantial torque of 540 Nm. Compa ...
Cleaning the windows
WARNING
Before cleaning the windshield or wiper
blades, switch off the windshield wipers and
remove the SmartKey from the ignition lock.
On vehicles with KEYLESS-GO, press the
Start/Stop but ...
Capacities
...
