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:
Important information
The cooling with air dehumidification function
is only available when the engine is running.
The air inside the vehicle is cooled and dehumidified according to the
temperature
selected.
WARNI ...
DEF
Important safety notes
For BlueTEC vehicles only.
DEF is a non-flammable, non-toxic, colorless,
odorless and water-soluble fluid.
Only use DEF that complies with
ISO 22241. Do not add any ...
Roadside Assistance button
•► Press and hold Roadside Assistance
button 1 for more than two seconds.
This initiates a call to the Mercedes-Benz
Customer Assistance Center. The indicator
lamp in Roadside Assistanc ...
