ADAPTIVE LED HEADLIGHTS


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Outline

•  The adaptive LED headlights improve visibility by changing the headlight illumination range depending on the vehicle driving conditions and the surrounding conditions without switching the headlights between HI/LO.
•  Depending on on-coming vehicles, vehicles ahead, driving around curves and the vehicle speed, the headlights automatically increase or decrease the brightness to illuminate farther and wider when the light switch is in the AUTO position and the dimmer switch is in the HI position.

Functions

•  The adaptive LED headlights determine the surrounding conditions and vehicle conditions based on the signals from the related modules, and based on the determined results, the adaptive LED headlights changes the headlight brightness. For surrounding condition and vehicle condition determination, refer to the [ADAPTIVE LED HEADLIGHTS CONTROL MODULE]. (See ADAPTIVE LED HEADLIGHTS CONTROL MODULE.)
•  The adaptive LED headlights has the following functions.

Glare-free high beam

•  Depending on the presence of vehicles ahead, driving around curves, traveling through towns and cities, or vehicle speed, the glare-free high beam helps prevent the drivers of other vehicles from being dazzled while the maintaining headlight high beam light distribution.
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Wide-range low beam

•  The wide-range low beam enhances the visibility at intersections during the night by illuminating the side-illuminating LEDs of the front combination light while traveling at low speeds.
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Highway mode

•  The highway mode raises the optical axis of the headlight low beams to improve long distance visibility while traveling at high speeds.
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System conditions display function

•  The forward sensing camera (FSC) displays the system status using the adaptive LED headlights indicator light (green) and adaptive LED headlights warning light (amber) in the instrument cluster, and the warning display on the center display.

Condition

Adaptive LED headlights indicator light (green)

Adaptive LED headlights warning light (amber)

LED headlight warning light

Multi-information display

Center display

Light switch is in AUTO and dimmer switch is in position other than HI
Off
Off
Off
No display
No display
Headlights off
While vehicle is stopped
System set to off by personalization
Light switch is in AUTO and dimmer switch is in HI and headlights turned on
On
Forward sensing camera (FSC) detects camera/windshield fogging
Warning display*1
Forward sensing camera (FSC) detects that the camera/windshield is dirty
Off
On
Adaptive LED headlights has a malfunction
On
No display
Forward sensing camera (FSC) has a malfunction
Off

*1  :For the warning display content on the center display, refer to the [CENTER DISPLAY]. (See CENTER DISPLAY.)


Personalization feature

•  The adaptive LED headlights can be set to ON (operational)/OFF (non-operational) (initial setting is ON (operational).) For details on the personalization features, refer to the [i-ACTIVSENSE PERSONALIZATION]. (See i-ACTIVSENSE PERSONALIZATION.)


Structural View

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•  24 LEDs (12 on each side) divided into 4 blocks are located in the headlight high beams.
Note
•  The illumination off or increase/decrease in brightness of the LEDs is performed on single block units.
•  2 LEDs (1 on each side) are located in the side illumination front combination lights.
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System Wiring Diagram

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Operation


Glare-free high beam

•  The adaptive LED headlights control module determines the vehicle driving status and surrounding conditions based on the signals from the related modules, and based on the determined result, the Glare-free High Beam controls the on/off/increase and decrease of brightness for the LEDs installed on the headlight high beams.
•  When the glare-free high beam operates with all the following conditions met.
―  Adaptive LED headlights personalization is ON (operational)
―  Headlight auto leveling system initial setting is complete
―  Selector lever is in position other than R position
―  Light switch in AUTO position and dimmer switch in HI position
―  Vehicle speed is 40 km/h {25 mph} or more
―  Driving in city/town signal is not received from forward sensing camera (FSC)
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No vehicle ahead and not driving on a curve (normal)
•  The adaptive LED headlights control module turns on the LEDs installed to the headlight high beams when there are no vehicles ahead and when the vehicle is not cornering.
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When there is a vehicle ahead (divided light distribution)
•  The adaptive LED headlights control module turns off the LEDs located on the headlight high beams that are emitting light on a vehicle ahead, based on the vehicle detection signal from the forward sensing camera.
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Driving on a curve (variable light distribution)
•  The adaptive LED headlights control module determines the lanes curve direction and curve length based on the lane condition signal or vehicle signal from related modules from the forward sensing camera (FSC), it then raises the LED on the inner side of the curve and lowers the LED on the outer side of the curve.
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High beam inhibition
•  When the adaptive LED headlights control module receives a driving in city/town signal from the forward sensing camera (FSC), it turns off the high beams and inhibits unnecessary brightness.
Flicker inhibition
•  The adaptive LED headlights control module delays the change in light distribution and inhibits flickering under the following conditions.
―  Losing sight of vehicle ahead due to sloping road conditions
―  Appearance/disappearance of vehicles ahead is due to effect of dividers lining the median strip
―  Light distribution is performed


Wide-range low beam

•  The adaptive LED headlights control module increases the brightness of the LEDs for side illumination in the front combination light when all the following conditions are met.
―  Adaptive LED headlights personalization feature is ON (operational)
―  Headlight auto leveling system initial setting is completed
―  Selector lever is in position other than R position
―  Light switch in AUTO position and dimmer switch in HI position
―  Vehicle speed is 2 km/h {1 mph} or more, or less than 40 km/h {25 mph}
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Highway mode

•  The adaptive LED headlights control module operates the highway mode when all of the following conditions are met.
―  Adaptive LED headlights personalization feature is ON (operational)
―  Headlight auto leveling system initial setting is completed
―  Selector lever is in position other than R position
―  Light switch in AUTO position and dimmer switch in HI position
―  Vehicle speed is 105 km/h {65.2 mph} or more
―  Driving in city/town signal is not received from forward sensing camera (FSC)
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•  The adaptive LED headlights control module raises the headlight low optical axis depending on the vehicle speed. For the headlight low optical axis adjustment, refer to the [HEADLIGHT LEVELING ACTUATOR]. (See HEADLIGHT LEVELING ACTUATOR.)

×: Applicable
—: Not applicable

Vehicle speed

Raise optical axis in 1 step

Raise optical axis in 2 steps

Vehicle speed exceeds 105 km/h {65.2 mph} for 5 s
×
Vehicle speed exceeds 110 km/h {68.4 mph}
×
Vehicle speed exceeds 115 km/h {71.5 mph} for 5 s
×
Vehicle speed exceeds 120 km/h {74.6 mph}
×

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List of operations
•  The adaptive LED headlights operate as follows depending on the surrounding conditions and vehicle conditions.

×: Applicable
—: Not applicable

Surrounding conditions and vehicle conditions

Operation

Vehicle ahead is recognized

Curve is recognized

Town/city streets recognized

Vehicle speed is 105 km/h {65.2 mph} or more (traveling at high speed)

Vehicle speed is 2 km/h {1 mph} or more and less than 40 km/h {25 mph} (traveling at low speed)

Regular
×
Divided light distribution
×
Variable light distribution
×
×
•  Divided light distribution
•  Variable light distribution
×
×
×
HI beam control
×
×
×
Wide-range LO beam
×
Highway mode
×
×
•  Divided light distribution
•  Highway mode
×
×
•  Variable light distribution
•  Highway mode
×
×
×
•  Divided light distribution
•  Variable light distribution
•  Highway mode
×
Wide-range low beam