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:

    First-aid kit
    Open the trunk lid. Release strap 1. Remove first-aid kit 2 from the parcel net. Check the expiration date on the first-aid kit at least once a year. Replace the contents if necessary, ...

    Closing the DEF filler cap and fuel filler flap
    – Place DEF filler cap 2 on the filler neck and turn it clockwise. – To close the fuel filler flap, press it in the direction of arrow 1. – Drive at a speed above 10 mph (16 km/h). The Check ...

    Cleaning the headliner and carpets
    – Headliner: use a soft brush or a cleaning agent recommended and approved by Mercedes-Benz to remove heavy soiling. – Carpets: use the carpet and textile cleaning agents recommended and appr ...