Actuate Turn Signal Light, Basic Function - GF82.10-P-1023A

MODEL ALL (CAR) 

Overview 

This document contains the following information:

• General 
• Turn signals 
• Hazard warning flashing 
  • Hazard warning flashing after maximum full-stop braking (not for USA version or Canada version) 
  • Hazard warning flashing after emergency stop (vehicles with Driving Assistance Package) 
  • Hazard warning flashing after airbag deployment 
  • CL locking/unlocking feedback 
  • Hazard warning flashing for alarm (vehicles with anti-theft alarm system (ATA)) 

General 

The turn signal light actuation consists of all functions for output of the turn signal, various warnings and feedback.

The various requests to output the function are prioritized by the central controller unit (control unit of exterior lighting). Turn signaling can be overridden by the hazard warning flasher function, and vice versa. The central controller unit transmits a flasher frequency with the time period of the bright phase of the turn signal lights via CAN to the corresponding control units.

The respective active function is indicated by indicator lamps and also signaled acoustically.

If a turn signal light fails, the frequency at which the indicator lamps are actuated is doubled, as is the frequency of the acoustic feedback. The flashing frequency of the turn signal lights of 1.5 Hz remains the same.

Economic Commission for Europe (ECE) vehicles 

During turn signal light actuation, the daytime running lights are switched off.

Canada version or USA version 

During turn signal light actuation, the daytime running lights are dimmed to position light level.

Turn signals 

The turn signaling shows the intended direction of travel of the driver.

Function requirement 

• Circuit 15R ON

Operating principle 

Pressing the combination switch downwards or upwards requests turn signaling in the corresponding direction.

If the combination switch is only operated briefly (under 440 ms), three blinking cycles are output (one-touch turn signaling).

The one-touch turn signaling is overridden by the hazard warning flasher or canceled if the combination switch is activated in the opposite direction.

Vehicles with trailer hitch 

During trailer operation, the turn signal light on the trailer is also actuated. The central controller unit requests actuation of the turn signal light on the trailer. The trailer recognition control unit implements this request.

Hazard warning flashing 

During hazard warning flashing, all turn signal lights on the vehicle are actuated synchronously. Depending on the ignition status, two duty cycles are output:

• Circuit 15R ON: light 52 %, dark 48 %
• Circuit 15R OFF: light 35 %, dark 65 %

If a turn signal light fails during hazard warning flashing, the frequency at which the indicator lamps are actuated is doubled but the frequency of the acoustic feedback is not.

Hazard warning flashing can be triggered manually via the hazard warning lights button.

Hazard warning flashing after maximum full-stop braking (not for USA version or Canada version) 

If the vehicle is decelerated below the speed of 3 km/h by maximum full-stop braking, the hazard warning flasher is automatically activated. The hazard warning flasher is deactivated by pressing the hazard warning lights button or upon exceeding a speed of 10 km/h.

Hazard warning flashing after emergency stop (vehicles with Driving Assistance Package) 

If the vehicle is decelerated below the speed of 60 km/h due to an emergency stop, the hazard warning flasher is automatically activated. As long as the vehicle is not decelerated below 3 km/h, the hazard warning flasher is also switched off when the emergency stop is over. The hazard warning flasher continues to operate below 3 km/h.

The hazard warning flasher is deactivated by pressing the hazard warning lights button or upon exceeding a speed of 10 km/h.

The hazard warning flasher during emergency stop function is not available in the following countries:

• China
• Taiwan
• South Korea
• India

Hazard warning flashing after airbag deployment 

When an airbag is deployed or during a rollover of the vehicle (crash signal sent), the hazard warning flasher is automatically activated. The hazard warning flasher is deactivated by pressing the hazard warning lights button.

CL locking/unlocking feedback 

The hazard warning flasher is automatically activated when the CL is locked/unlocked. When the CL is unlocked, the hazard warning flashing function is activated for one blinking cycle; three blinking cycles are output when it is locked.

Hazard warning flashing for alarm (vehicles with ATA) 

The hazard warning flasher is automatically activated when an ATA or emergency alarm is triggered.

	Control units
	Trailer recognition control unit, basic function	Model all (CAR) with code 550 (Trailer coupling)	GF31.19-P-9890A
	Central controller unit, basic function		GF54.21-P-9895A
	Front door control unit, basic function		GF72.29-P-9891A
	Headlamp control unit, basic function	Model all (CAR) with code 631 (Static LED headlamps, left- hand traffic) Model all (CAR) with code 632 (Headlamps, LED, static, right- side traffic) Model all (CAR) with code 640 (High-performance LED) Model all (CAR) with code 641 (Dynamic LED headlamps, left- hand traffic) Model all (CAR) with code 642 (Dynamic LED headlamps, right-hand traffic)	GF82.10-P-9890A
	Components
	Front lamp unit, basic function		GF82.10-P-2000A
	Rear lamp unit, basic function		GF82.10-P-2004A