System self-test

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

WARNING 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 self-diagnosis.
  • the indicator lamp in the Roadside Assistance button does not light up during the system self-diagnosis. Roadside Assistance button does not light up during the system self-diagnosis.
  • The indicator lamp in the information button does not light up during self-diagnosis of the system. information button does not light up during self-diagnosis of the system.
  • the indicator lamp in the SOS button, information button continues to Roadside Assistance button or be lit red after the system self-diagnosis. 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:

    Engine
    Display messages Possible causes/consequences and Solutions The yellow Check Engine warning lamp lights up while the engine is running. There may be a malfunction, for ex ...

    Setting the rear-compartment airflow using the rear control panel
    Turn the SmartKey to position 2 in the ignition lock. To increase/reduce: press rocker switch 14 up or down. ...

    Setting climate control to automatic
    WARNING If you switch off the cooling function, the vehicle will not be cooled when weather conditions are warm. The windows can fog up more quickly. Window fogging may impair visibility an ...