Checking the battery

- Press the or

- Press the button. or The battery is working properly if battery button.
The battery is working properly if battery check lamp 1 lights up briefly
If battery check lamp 1 does not light up briefly during the test, the battery is discharged.
- Changing the battery.

qualified You can obtain the battery at a qualified specialist workshop.

checked within If the SmartKey battery is checked within the signal reception range of the vehicle, pressing the button locks or or unlocks the vehicle. button locks or unlocks the vehicle.

    See also:

    Important safety notes
    WARNING The PARKTRONIC is a supplemental system. It is not intended to, nor does it replace, the need for extreme care. The responsibility during parking and other critical maneuvers alway ...

    Styling
    The 2012 M-Class retains many of the previous generation's styling cues, like a wide front grille and forward-swept C-pillars, but the new design looks more substantial and imposing. Contributing ...

    Operation with an active COMAND source
    You can transfer an audio or video mode selected in COMAND to the Rear Seat Entertainment System. If you subsequently switch modes in COMAND, the new source will not be transmitted to the Re ...