Hazard warning lamps

The hazard warning lamps automatically switch on if:

The hazard warning lamps automatically switch on if:

  • an air bag is deployed.
  • the vehicle is slowed down severely from a speed of over 45 mph(70 km/h) and comes to a halt.
  • To switch on the hazard warning lamps: press button 1.
    All turn signals flash. If you now switch on a turn signal using the combination switch, only the turn signal lamp on the corresponding side of the vehicle will flash.
  • To switch off the hazard warning lamps: press button 1.

The hazard warning lamps are deactivated automatically if the vehicle returns to a speed of over 6 mph(10 km/h) after a full application of the brakes.

Active light function The hazard warning lamps still operate if the ignition is switched off.

    See also:

    System self-test
    After you have switched on the ignition, the system carries out a self-diagnosis. WARNING A malfunction in the system has been detected if one of the following conditions occurs: - the indic ...

    Restoring the factory settings
    ► Press the buttons simultaneously for approximately six seconds until the battery check lamp flashes twice. ...

    Activating/deactivating PRE-SAFE® Brake
    PRE-SAFE® Brake is only available in vehicles with DISTRONIC PLUS. Press the or button on the steering wheel to select the DriveAssist menu. Press or to select PRE-SAFE Brake. Pr ...