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:

    Load index
    Tire data is vehicle-specific and may deviate from the data in the example. In addition to the load bearing index, load index 1 may be imprinted after the letters that identify speed index 6 ( ...

    Selecting a station
    You can select an HD Radio station in the same way as selecting a standard FM radio station. After setting an HD Radio frequency, you will briefly hear the analog station until the digital dat ...

    Surround sound
    General information If your vehicle is equipped with the harman/ kardon® Logic 7® surround sound system, you can set the optimum surround sound for every passenger. The harman/kardon®Logic 7® ...