Checking the battery

  • Press the button. The battery is working or properly if battery check lamp 1 lights up briefly 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 ()

You can obtain the battery at a qualified specialist workshop.

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

    See also:

    Brilliant finish: the rear assembly of the M-Class
    The rear area too of the M-Class also protects the sturdy passenger compartment in crash situations thanks to specific deformation work, therefore minimising the loads on the occupants. A special ...

    LATCH-type (ISOFIX) child seat anchors in the rear
    WARNING Children that are too large for a child restraint must travel in seats using normal seat belts. Position shoulder belt across the chest and shoulder, not face or neck. In order to ...

    Important safety notes
    WARNING In order to avoid possible loss of vehicle control, all seat, head restraint, steering wheel and rear view mirror adjustments, as well as fastening of seat belts, must be done bef ...