LIGHTING SYSTEM

AUTOMATIC LIGHT CONTROL SYSTEM

When the light control switch is in the AUTO position, the automatic light control system detects ambient light levels and controls the low beam headlights, clearance lights, taillights, rear side marker lights* and license plate lights.

*: w/ Rear Side Marker Light

LIGHT AUTO TURN-OFF SYSTEM (except Driver Door-linked Light Auto Turn-off System)

The light auto turn-off system is used to prevent the exterior lights from being accidentally left on (headlights, taillights, front fog lights*1, rear fog light*2, clearance lights, license plate lights and rear side marker lights*3).

The lights that turn off vary according to the position of the light control switch as shown in the table below.

Switch Condition	Outline
Light control switch in AUTO position	While the exterior lights are turned on, this control automatically turns them off when the power switch is turned from on (IG) to off.
Light control switch in tail or head position	While the exterior lights are turned on, this control automatically turns off only the headlights and the front fog lights1 when the power switch is turned from on (IG) to off. Tech Tips The taillights, clearance lights, license plate lights, rear fog light2 and rear side marker lights*3 will remain on.

*1: w/ Front Fog Light
*2: w/ Rear Fog Light
*3: w/ Rear Side Marker Light

LIGHT AUTO TURN-OFF SYSTEM (for Driver Door-linked Light Auto Turn-off System)

The light auto turn-off system is used to prevent the exterior lights from being accidentally left on (headlights, taillights, front fog lights*1, rear fog light*2, clearance lights, license plate lights and rear side marker lights*3).
When all of the following conditions are met, the headlights, taillights, front fog lights*1, rear fog light*2, clearance lights, license plate lights and rear side marker lights*3 turn off:
- The power switch is turned from on (IG) to off.
- The headlights, taillights, front fog lights*1, rear fog light*2, clearance lights, license plate lights or rear side marker lights*3 are on.
- The driver door is opened.
- *1: w/ Front Fog Light
- *2: w/ Rear Fog Light
- *3: w/ Rear Side Marker Light

LIGHT AUTO TURN-OFF SYSTEM (w/ Delay Function)

The light auto turn-off system is used to prevent the exterior lights from being accidentally left on (low beam headlights, high beam headlights, front fog lights*1, taillights, clearance lights, license plate lights and rear side marker lights*2).

This system has the following functions.

Function	Outline
Driver Door-linked Function	The exterior lights automatically turn off when all of the following conditions are met: The power switch is turned from on (IG) to off. The light control switch is in the tail position. The driver door is opened.
Delay Function	The exterior lights automatically turn off after 30 seconds when all of the following conditions are met: The power switch is turned from on (IG) to off. The headlights are on (light control switch is in the head or AUTO position). All doors are closed after are of the doors are opened.
Door Control Transmitter-linked Function	The exterior lights turn off immediately when the delay function is active and the following condition is met: The lock button on the key is pushed after all doors are locked.

Function

Outline

Driver Door-linked Function

The exterior lights automatically turn off when all of the following conditions are met:

The power switch is turned from on (IG) to off.
The light control switch is in the tail position.
The driver door is opened.

Delay Function

The exterior lights automatically turn off after 30 seconds when all of the following conditions are met:

The power switch is turned from on (IG) to off.
The headlights are on (light control switch is in the head or AUTO position).
All doors are closed after are of the doors are opened.

Door Control Transmitter-linked Function

The exterior lights turn off immediately when the delay function is active and the following condition is met:

The lock button on the key is pushed after all doors are locked.

*1: w/ Front Fog Light
*2: w/ Rear Side Marker Light

DAYTIME RUNNING LIGHT SYSTEM

The daytime running light system is designed to automatically illuminate the daytime running lights (high intensity clearance lights), during the daytime to make the vehicle more visible to other vehicles.
There are 2 LED type clearance light circuits in each headlight. One is for a conventional low intensity clearance light that illuminates with the taillights, and the other is for the high intensity clearance light that is used for the DRL system. These circuits are operated by the main body ECU (multiplex network body ECU).
This system is enabled when all of the following conditions are met:
- The power switch is on (READY).
- The light control switch is in the off or AUTO position (with the taillights not turned on via the automatic light control system).
- The parking brake is released.

LED HEADLIGHT SYSTEM (for LED Headlight)

General

LED headlights are used to provide efficient, maintenance free lighting. Compared to halogen or HID headlights, even if an LED headlight is used for a long time, the reduction of brightness over its lifetime is less. In addition, there is no possibility of an LED having an open circuit because of vibration.

Function of Main Components

Component		Outline
Light Control LED ECU		Turns on the LEDs immediately when the light control switch is turned to the head position. Regulates the output current flowing into the LEDs at a specified level to prevent the light from getting brighter and dimmer due to voltage variation. Transmits fail signals to the main body ECU (multiplex network body ECU) when a malfunction occurs in the LED headlight system.
Combination Meter Assembly	Master Warning Light	Flashes to inform the driver when the light control LED ECU detects malfunctions in this system.
Combination Meter Assembly	Multi-information Display	Displays a warning message to inform the driver when the light control LED ECU detects a malfunction in this system.
Main Body ECU (Multiplex Network Body ECU)		Receives fail signals from the light control LED ECU when a malfunction occurs in the LED headlight system, and transmits the signals to the combination meter assembly. Stores Diagnostic Trouble Codes (DTCs) when the system malfunctions.

AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM (for LED Headlight)

General
- This system maintains the low beam headlights at a constant level while the vehicle is stopping.
- This system is controlled by the headlight leveling ECU assembly. The headlight leveling ECU assembly detects the vehicle posture via the rear height control sensor sub-assembly, and detects the vehicle speed via the combination meter assembly. The headlight leveling ECU assembly controls each headlight leveling motor based on these pieces of information in order to change the headlight reflector angle.
Note
- Initialize the rear height control sensor sub-assembly signal after the vehicle height changes due to replacement of the suspension or after operations as reinstallation or replacement of the rear height control sensor sub-assembly.
- When the headlight leveling ECU assembly is replaced, initialization is also necessary.

Function of Main Components

Component	Outline
Rear height control sensor sub-assembly	Detects vehicle height.
Combination Meter Assembly	Outputs the vehicle speed signal to the headlight leveling ECU assembly. The headlight beam level control system indicator light in the combination meter illuminates for 3 seconds and then goes off when the power switch is turned on (IG) (bulb check function). The headlight beam level control system indicator light in the combination meter illuminates to alert the driver when a malfunction in this system is detected.
Headlight Leveling Motor	Based on the signals received from the headlight leveling ECU assembly, each motor moves the reflector in the headlight to vary its low beam.
Headlight Leveling ECU Assembly	Based on the signals that are transmitted by the rear height control sensor sub-assembly and combination meter assembly, the headlight leveling ECU assembly detects the amount of variance of the vehicle posture while the vehicle is stopping. Based on the detected value, the headlight leveling ECU assembly outputs control signals to the headlight leveling motor. The headlight leveling ECU assembly turns on the headlight beam level control system indicator light for 3 seconds when the power switch is turned on (IG) (bulb check function). The headlight leveling ECU assembly turns on the headlight beam level control system indicator light to alert the driver when a malfunction in this system is detected.

MANUAL HEADLIGHT BEAM LEVEL CONTROL SYSTEM (for Halogen Headlight)

The manual headlight beam level control system controls each headlight leveling motor based on the headlight leveling switch operation in order to change the headlight reflector angle.

WELCOME LIGHT ILLUMINATION CONTROL

When a wireless door unlock operation or entry door unlock operation is performed at nighttime, the taillights, clearance lights (low intensity clearance lights), license plate lights and interior lights (switch illumination, etc.) illuminate for 15 seconds.
1. This system is controlled by the main body ECU (multiplex network body ECU).
2. This system is enabled when all of the following conditions are met:
  - The power switch is off.
  - The light control switch is in the AUTO position.
  - The automatic light control system determines that the surrounding area is dark.
  - A wireless door unlock operation or entry door unlock operation is performed.

FOLLOW ME HOME CONTROL (w/ Follow Me Home Control)

The follow me home control is designed to illuminate the low beam headlights, taillights, clearance lights (low intensity clearance lights), license plate lights and interior lights (switch illumination, etc.) for approximately 30 seconds after the vehicle is parked.
1. This system is controlled by the main body ECU (multiplex network body ECU).
2. This system is enabled when all of the following conditions are met:
  - The power switch is off.
  - The light control switch is in the off or AUTO position.
  - The light control switch is pulled to flash the headlights once.

DOOR MIRROR FOOT LIGHT SYSTEM

General
- The door mirror foot light system consists primarily of the fade-in/fade-out function and timer illumination function.
- This system is controlled by the main body ECU (multiplex network body ECU).

The door mirror foot light system has the following control functions:

Function	Outline
Actuation Area-linked	When all of the following conditions are met, the lights that operate turn on: The power switch is off. All doors are closed. A key is detected in the actuation area.
Actuation Area-linked	When the following condition is met, the lights that operate turn off: A key is not detected in the actuation area.
Door Unlock-linked	When all of the following conditions are met, the lights that operate turn on: The power switch is off. All doors are closed. Any door is unlocked when all doors are locked.
Door Lock-linked	When either of the following conditions is met, the lights that operate turn off: All doors are locked when all doors are closed and any door is unlocked. All doors are locked again when all doors are closed and locked.
Power Switch-linked	When the following condition is met, the lights that operate turn off: The power switch is on (IG).
Delay	When approximately 15 seconds elapse after any of the following conditions are met, the lights that operate turn off: An actuation area-linked function is used. The door unlock-linked function is active. Any door is opened and then closed.

AUTOMATIC HIGH BEAM SYSTEM (w/ Automatic High Beam System)

General

The automatic high beam system enhances the illumination of the area in front of the vehicle to improve visibility for the driver. It works by detecting lights in front of the vehicle, using the forward recognition camera, and turns the high beam headlights on or off automatically.

Function of Main Components

Component	Outline
Forward Recognition Camera	Determines when to turn the high beams on and off after identifying the lights of oncoming vehicles, preceding vehicles and other lights from the picture information of its camera sensor. Then, it sends high beam request signals to the main body ECU (multiplex network body ECU) via CAN communication.
Yaw Rate Sensor	Outputs yaw rate information to the forward recognition camera.
Skid Control ECU (Brake Booster with Master Cylinder Assembly)	Outputs the information about the speed of the wheels. This information is used by the forward recognition camera to turn the high beams on and off.
Combination Meter Assembly	Turns on the automatic high beam indicator light and displays a message on the multi-information display based on an indicator illumination request signal from the main body ECU (multiplex network body ECU). Tech Tips When an automatic high beam system malfunction is detected, the automatic high beam indicator light turns off and "Headlight System Malfunction Visit Your Dealer" is displayed on the multi-information display. The automatic high beam indicator light illuminates to inform the driver when the automatic high beam system is active.
Main Body ECU (Multiplex Network Body ECU)	Determines whether the automatic high beam system is in standby mode based on the dimmer switch high position signal, light control switch AUTO or head position signal and auto high beam switch signal, and sends an indicator illumination request signal and message display request signal to the combination meter assembly. Receives the high beam illumination request signal from the forward recognition camera and changes between the high beams and low beams. Performs illumination control for the automatic high beam system and stores Diagnostic Trouble Codes (DTCs) when the system malfunctions.
Auto High Beam Switch	Enables or disables the automatic high beam system.

Basic Function
1. When all of the following conditions are met, the automatic high beam system is activated and the automatic high beam indicator light turns on:
  - The power switch is on (IG).
  - The light control switch is in the AUTO or head position and the low beam headlights are on.
  - The dimmer switch is in the high position.
  - The auto high beam switch is ON.
2. When all of the following conditions are met, the high beams automatically turn on after a short delay:
  - Vehicle speed is more than approximately 40 km/h (25 mph). (for European Models)
  - Vehicle speed is more than approximately 30 km/h (19 mph). (except European Models)
  - The area in front of the vehicle is dark.
  - There are no oncoming vehicles with headlights on.
  - There are no preceding vehicles with taillights on.
  - There are few streetlights along the street ahead.
3. When any of the following conditions are met, the high beams automatically turn off after a short delay:
  - Vehicle speed is less than approximately 30 km/h (19 mph). (for European Models)
  - Vehicle speed is less than approximately 25 km/h (16 mph). (except European Models)
  - There are oncoming vehicles with headlights on.
  - There are preceding vehicles with taillights on.
  - Light from streetlights ahead is higher than a specified threshold.
4. When any of the following conditions are met, the automatic high beam system will be canceled and the indicator light will turn off:
  - The power switch is turned off.
  - The light control switch is turned to any position except the AUTO or head position.
  - The dimmer switch is moved to the low position.
  - The auto high beam switch is off.
  Tech Tips
  
  It is possible to manually turn the high beams on and off by performing either of the following operations:
  - Move the dimmer switch to the low position. The automatic high beam system will be canceled and the low beams will be turned on. To enable the automatic high beam system again, move the dimmer switch to the high position.
  - Turn the auto high beam switch off. The automatic high beam system will be canceled and the high beams will be turned on. To enable the automatic high beam system again, turn the auto high beam switch on.
  Tech Tips
  
  The automatic high beam system monitors the area in front of the vehicle using the forward recognition camera and makes a judgment to turn on the high beams when the surrounding area is dark (there are no headlights from oncoming vehicles and no taillights from preceding vehicles). High beam control limitations:
  - When the surrounding area is not dark enough, the high beams will not turn on even if the low beam headlights are turned on by the automatic light control system and the automatic high beam indicator light on the combination meter assembly illuminates. (The light level sufficient to turn the auto low beams on is not the same as the light level required to automatically change the low beams to high beams.)
  - When an oncoming vehicle suddenly appears at a sharp curve or a vehicle crosses the path of the vehicle, the high beams may remain on.
  - When the fog lights of an oncoming vehicle are detected, the high beams may be turned off.
  - The timing of the high beams turning on and off may differ depending on the brightness of headlights or fog lights from oncoming vehicles or the taillights of preceding vehicles.
  - The timing of the high beams turning on and off may differ between normal conditions (good weather) and when driving on wet, frozen or snowy roads.
  - The timing of the high beams turning on and off may differ depending on the number of occupants and amount of cargo present.
  - Be aware that on some occasions, the high beams may switch on and off unexpectedly.
  Tech Tips
  
  The forward recognition camera continually monitors the light level in the area in front of the vehicle. There is a delay in turning on the high beams. Even when there is no ambient light, the high beams will not turn on immediately. The delay will vary depending on the situation.

LIGHTING SYSTEM SYSTEM DESCRIPTION