System self-test

After you have switched on the ignition, the system carries out a self-diagnosis.

A malfunction in the system has been WARNING
A malfunction in the system has been detected if one of the following conditions occurs:
- the indicator lamp in the SOS button does not light up during the system selfdiagnosis.
- the indicator lamp in the Roadside Roadside Assistance button does not light up during the system self-diagnosis.
- The indicator lamp in the information information button does not light up during selfdiagnosis of the system.
- the indicator lamp in the SOS button, Roadside Assistance button or Roadside Assistance button or information button continues to be lit red information button continues to be lit red after the system self-diagnosis.
- The Tele Aid Inoperative or Tele Aid Not Activated message appears in the multifunction display after the system selftest.
If a malfunction is indicated as outlined above, the system may not operate as expected. In the event of an emergency, assistance must be summoned by other means.
Have the system checked at the nearest authorized Mercedes-Benz Center or contact the following service hotlines:
- USA: Mercedes-Benz Customer Assistance Center under
1-800-FOR-MERCedes(1-800-367-6372)
or 1-888-990-9007
- Canada: Customer Service at
1-888-923-8367

    See also:

    Refueling
    Fuel filler flap The fuel filler flap is unlocked or locked automatically when you open or close the vehicle with the SmartKey or using KEYLESSGO. The position of the fuel filler cap is displaye ...

    Tachometer
    The red band in the tachometer indicates the engine's overrevving range. Do not drive in the overrevving range, as this could damage the engine. The fuel supply is interrupted to protect the ...

    Exterior
    A strictly utilitarian appearance is softened somewhat by body-color bumpers, rub strips and rocker panels, as well as alloy wheels and a stainless steel spare-tire cover. As for dimensions, the G ...