Exterior Lights - Control/Function (2016 2017 2018)
Headlights Function
The headlights are controlled by the MICU, based on combination light switch input signals.
Headlights Auto-OFF Function
When the headlights auto-off function is selected, the exterior lights automatically turn off when vehicle is in the OFF (LOCK) mode, and the driver's door is opened and closed. The timing for turning off the exterior lights can be customized in the multi-information display (MID) to suit the client's needs.
LED Headlight Fault Detection Function
The LED control unit sends a 10 Hz (duty 50 %) signal to the MICU when the headlight is on. If the MICU receives the 5 Hz (duty 50 %) signal, the MICU judges an LED assembly is faulty. If the MICU receives other than 5 Hz or 10 Hz signal, the MICU judges the LED control unit is faulty.
Turn Signal/Hazard Light Function
The turn signal/hazard warning lights are controlled by the MICU, using input from the combination light switch or hazard warning switch signal. When the MICU receives a left turn or right turn command from the combination light switch, it blinks the front and rear turn signal lights for the left or right side of the vehicle. When the MICU receives a hazard warning command from the hazard warning switch, it blinks the front and rear turn signal lights for both sides of the vehicle. The system also includes wire break detection. Wire break detection of the turn signal lights is performed by monitoring current value in combination with the feedback signal transmitted by the front turn signal lights. An abnormal value is registered as a wire break (open) or faulty bulb or LED. When this occurs, the MICU increases the turn signal lighting frequency. If the break detection shows that the current value or feedback signal has returned to the correct value, the MICU returns the turn signal lighting frequency to the normal frequency.
One-Push Turn Signal Light
With the vehicle in the ON mode, when there is a brief input from the turn signal switch, the MICU flashes the left or right turn signal three times in succession.
Fog Light Function
The fog light is controlled by the MICU, based on switch input from the combination light switch.
Daytime Running Lights Function
For daytime running light control, the MICU controls the daytime running light relay based on the combination light switch signal and the automatic lighting signal, and then turns on the light. When the combination light switch is in the ON position or the AUTO position, and the low beam output signal from the automatic lighting control unit-sensor or the automatic lighting/rain sensor are input to the MICU, daytime running light control is not performed.
Automatic Lighting ON/OFF Control
When the light ON delay time elapses after the automatic lighting control unit-sensor or the automatic lighting/rain sensor output voltage drops to the light ON luminance, the front parking lights, the side marker lights, the taillights, the license plate lights, and the headlights turn on. When the light OFF delay time elapses after the automatic lighting control unit-sensor output voltage rises to the light OFF luminance, the front parking lights and the headlights turn off.
| Lights ON Delay Time | Lights OFF Delay Time |
|---|---|
| 5 sec. | 5 sec. |
Without Automatic Wiper
With Automatic Wiper
Wiper Link Mode (USA Models)
When the wiper switch is in a position other than OFF, the MICU counts and records the wiper motor ON to OFF signal (edge count) within 20 seconds from the windshield wiper motor (FR WIPER AS signal). After a total of 5 counts, it switches to wiper link mode and turns on the headlights, the front parking lights, the taillights, and the side marker lights. The ON/OFF signals at the time of windshield washer operation are not counted. When an edge count is not received for 30 seconds or more, the count is reduced by 1.
Stop the Wiper Link Mode (wiper link mode is ended by any one of the following conditions):
- When the vehicle is turned to the OFF (LOCK) mode.
- When ON/OFF operation of the windshield wiper auto stop (AS) signal has not been detected.
Warning Function
The automatic lighting control unit-sensor or the automatic lighting/rain sensor sends an indicator signal to the gauge control module in case of failure of the automatic lighting sensor or when the signal sent from the MICU by B-CAN signal is abnormal.
Sensitivity Adjustment Function
Sensitivity adjustment function of automatic lighting system can be customized with the gauge control module. You can select the customized timing from 5 types (Min, Lo, Mid, Hi, Max) of sensitivity. The customization information can be stored after receiving a remote ID signal (DRIVER 1 or DRIVER 2) from the keyless access/TPMS control unit.