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:

    Reporting safety defects
    If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) ...

    Tires
    Problem Possible causes/consequences and •► Solutions USA only: The yellow tire pressure monitor warning lamp (pressure loss/ malfunction) is lit. Canada only: The yell ...

    Checklist before driving off-road
    If the engine oil warning lamp lights up while the vehicle is in motion, stop the vehicle in a safe place as soon as possible. Check the engine oil level. The engine oil warning lamp warning mu ...