Hazard Warning Flasher Actuation, Function

Hazard Warning Flasher Actuation, Function






Function sequence for hazard warning
1 The hazard warning flasher switch (S6/5s1) is actuated and indicates this by flashing.
2 The lower control panel control module (N72) senses the position of the hazard warning flasher switch and transmits the signal "Hazard warning flasher ON" to the jacket tube module (N80) via the passenger compartment CAN bus.
3 The jacket tube module (N80) implements the hazard warning flasher signal and transmits the signal "Turn left or right" to the corresponding control modules and the instrument cluster for actuating the turn signals via the passenger compartment CAN bus.
4 The hazard warning flasher is active.
- The left front SAM control module (N10/10) actuates the left turn signal (E1e5) and the right front SAM control module (N10/11) actuates the right turn signal (E2e5) in the headlamp unit,
- The left front door control module (N69/1) and right front (N69/2) actuate the left exterior mirror turn signal lamp (E6/5) and right exterior mirror (E6/6).
- The rear SAM control module (N10/8) actuates the turn signal lamps (E3e1 and E4e1) in the left and right-hand tail lamps.
- The instrument cluster (A1) signals the turn signal procedure optically and acoustically by acoustically actuating the indicator lamp in the left or right turn signal lamp (A1e1 or A1e2) and the audible turn signal indicator (A1h2).

NOTE: when the jacket tube module (N80) fails the signal "Turning left and right" is transmitted directly to the corresponding control modules from the lower control panel control module (N72) via the passenger compartment CAN bus.

Hazard flashers after airbag deployment

NOTE: If the airbag ignites the corresponding engine control module signals a "Crash signal" to the lower control panel control module via the EIS.

This activates the hazard warning flasher function. The hazard warning flasher function is switched off by actuating the hazard warning flasher switch.