Emergency Flasher Button Search Illumination
Additional Components
- Comfort System Central Control Module -J393-
- Headlamp Switch -E1-
- Warning Light Button -E229-
- Emergency Flasher Indicator Lamp -K6-
Function
When the emergency flashers are off, the emergency flasher indicator lamp -K6- is dimmed by the vehicle electrical system control module -J519- via a PWM signal, if terminal 58st is active.
The dimming function works as the search illumination in this case. The vehicle electrical system control module -J519- calculates the dimming value using an internal algorithm taken from the dimming value for terminal 58st.
When the emergency flashers are on, the emergency flasher indicator lamp -K6- is controlled by the vehicle electrical system control module -J519-. The indicator lamp is controlled by a 100% PWM during the on phase. During the off phase, the PWM signal is 0%.
Activating the emergency flashers works as follows:
The condition of the emergency flasher button -E229- is evaluated by thevehicle electrical system control module -J519-.
When the button is recognized as being on, then the information is sent to the comfort system central control module -J393- via the CAN Bus, which serves as the blink master. This then sends tells the emergency flasher indicator lamp -J519-, via the CAN Bus, which frequency should be used to control the emergency flasher indicator lamp -K6-.
The emergency flashers are automatically turned on by the comfort system central control module -J393- during emergency braking of if there a crash and airbag deploys and the blinking frequency information is sent to the vehicle electrical system control module -J519-.
- E1 -Headlamp Switch
- E20 -Instrument Panel Illumination Dimmer Switch
- E229 -Warning Light Button
- G397 -Rain/Light Recognition Sensor
- J285 -Instrument Cluster Control Module
- J393 -Comfort System Central Control Module
- J519 -Vehicle Electrical System Control Module
- K6 -Emergency Flasher Indicator Lamp
- A -CAN-bus
- B -Wire Connection
- C -LIN-bus
Service Information
The emergency flasher indicator lamp -K6- can be controlled by an actuator test in the vehicle electrical system control module -J519-.
The dimming value can be displayed in the vehicle electrical system control module -J519- measured values block when the emergency flasher indicator lamp -K6- is on.