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 or on the SmartKey. button on the SmartKey.
or
- Insert the SmartKey into the ignition lock.
or
- To deactivate the alarm with KEYLESS-GO:
press the Start/Stop button in the ignition lock. The SmartKey must be in the vehicle.
or
- Lock or unlock the vehicle using KEYLESS-GO.
The SmartKey must be outside the vehicle.

    See also:

    Before changing a fuse
    Park the vehicle and apply the parking brake. Switch off all electrical consumers. Remove the SmartKey from the ignition lock. The fuses are located in various fuse boxes: fuse box on th ...

    Switching to navigation mode
    Press the function button once or twice. or Select Navi in the main function bar by sliding and turning the COMAND controller and press to confirm. In both cases, you will see ...

    Activating/deactivating the radar sensor system
    The following systems are switched off when the radar sensor system is deactivated: • DISTRONIC PLUS • BAS PLUS • PRE-SAFE® Brake • Blind Spot Assist • Active Blind Spot Assist USA on ...