Hazard warning flashers

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The hazard warning flashers are activated by pressing the hazard warning switch. All turn indicators are activated simultaneously while the hazard warning switch display within the instrument panel also flashes. With Terminal 30 on the hazard warning flashers are implemented in their energy-saving mode. In this mode, the hazard warning flashers light up for a shorter period and remain off for a longer period than usual. When the turn signal/high beam switch is used to activate the turn indicator light while the hazard warning flashers are operating, the turn indicator light assumes priority. The system reverts to operation of the hazard warning flashers after Terminal 15 off or when the turn indicator light has returned to its original position. If the hazard warning switch is depressed while the turn indicator light is operating, then the hazard warning flashers assume priority.

Hazard warning flashers when anti-theft alarm system triggers alarm

The footwell module (FRM) or the Body Domain Controller (BDC) receives the request for the hazard warning flashers in the event of an alarm activation via the CAN bus. The signal is generated by the ultrasonic interior movement detector. The hazard warning flashers continue for 6 minutes provided that the anti-theft alarm system is not switched off in the intervening period. When the anti-theft alarm system is signalling an active alarm the hazard warning switch is suppressed and does not flash with the alarm system. The ultrasonic interior movement detector is completely integrated within the roof function center (FZD).

Hazard warning flashers during dangerous or emergency braking

In the event of hazard braking or emergency braking, the hazard warning flasher is automatically activated. This serves as supplementary warning source for following traffic. If the vehicle comes to a standstill, the hazard warning flasher remains switched on. The hazard warning flasher is switched off if the vehicle is accelerated again.