LIGHTING SYSTEM SYSTEM DESCRIPTION

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, parking lights, taillights and license plate lights.

LIGHT AUTO TURN-OFF SYSTEM (w/ Light Reminder)

The light auto turn-off system is used to prevent forgetting to turn off the exterior lights (headlights, front fog lights, taillights, parking lights, license plate lights).

• This system has the following functions.

• *1: w/ Front Fog Light

LIGHT AUTO TURN-OFF SYSTEM (w/o Light Reminder)

1. General

   The light turn-off system is used to prevent the driver from leaving the vehicle with the headlights, front fog lights, parking lights, taillights or license plate lights on.

2. When all of the following conditions are met, the headlights, front fog lights, parking lights, taillights and license plate lights turn off:

   
   

   • The power switch is turned from on (IG) to off.

   • The headlights, front fog lights, parking lights, taillights or license plate lights are on.

   • The driver door is opened.

DAYTIME RUNNING LIGHT SYSTEM

1. The daytime running light system is designed to automatically illuminate the headlights (high-intensity parking lights), during the daytime to make the car more visible to other vehicles.

   
   

   • There are 2 LED type parking light circuits in each headlight. One is for a conventional low-intensity parking light that illuminates with the taillights, and the other is for the high-intensity parking 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 the conditions given below are met:

   
   

   • Power switch on (IG)

   • READY condition is received.

   • Light control switch is in the AUTO position (and the low beam headlights are not turned on via the automatic light control system).

LED HEADLIGHT SYSTEM

1. 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.

2. Function of Main Components

   Component		Outline
   Light Control 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 ECU detects malfunctions in this system.
   	Multi-information Display	Displays a warning message to inform the driver when the light control ECU detects a malfunction in this system.
   Main Body ECU (Multiplex Network Body ECU)		Receives fail signals from the light control 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

1. 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.

2. 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.

DOOR MIRROR FOOT LIGHT SYSTEM

1. General

   
   

   • The door mirror foot light control consists primarily of the fade-in/fade-out function and timer illumination function.

   • This control is controlled by the main body ECU (multiplex network body ECU).

2. 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.
   	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.
   Door Control Switch-linked	When all of the following conditions are met, the lights that operate turn on: The power switch is on (IG). Park (P) has been selected. Either the driver door control switch or front passenger door control switch is turned to the unlock position.
   Shift Lever Position-linked	When both of the following conditions are met, the lights that operate turn off: The power switch is on (IG). The shift lever is moved to select a shift state other than park (P).
   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 doors are unlocked using the mechanical key, wireless function or door control switch.