Mechanical key
General notes
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.
There are several ways to turn off the alarm:
► To turn the alarm off with the
SmartKey: press the
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.
Removing the 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:
Premiere: Active Blind Spot Assist and Active Lane Keeping Assist
Assistance systems are becoming increasingly important these days, providing
support for drivers as they perform a complex activity. In the new Mercedes CLS,
for example, proven technologies like ...
Low-beam headlamps (halogen headlamps)
Low-beam headlamps (halogen headlamps)
Switch off the lights.
Open the hood.
Turn housing cover 1
counter-clockwise and pull it out.
Turn bulb holder 2
counter-clockwise and pull it out. ...
Fuel requirements
Gasoline engines
Use only premium-grade unleaded gasoline.
The octane number should be at least 91.
Details can be found on the gas pump. The
octane number is the average value of the
Researc ...
