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 on the SmartKey. 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

Push release catch 1 in the direction of the arrow and at the same time, remove mechanical key 2 from the SmartKey.

    See also:

    Adjusting the steering wheelmanually
    This function is only available in vehicles in the USA. 1 Release handle 2 To adjust the steering wheel height 3 To adjust the steering wheel position (fore-and-aft adjustment) ► Pull ...

    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 Assistance but ...

    Sunblinds on the rear side windows
    To extend: pull the roller sunblind out by tab 1 and hook it onto retainers 2 at the top of the window. Always guide the roller sunblind by hand. Do not let it snap back suddenly as this ...