AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM(for Sedan) INITIALIZATION

Note


  • Make sure to perform vehicle information synchronization after replacing when the headlight leveling ECU assembly with a new one.

  • Make sure to perform initialization after replacing the headlight leveling ECU assembly.

  • Initialize the headlight leveling ECU assembly after the vehicle height has changed due to replacement of suspension components or after performing operations such as removal and reinstallation or replacement of the rear height control sensor sub-assembly.

  • Adjust the headlight aim after initializing the headlight leveling ECU assembly.

    Click here

  • When a malfunction is detected in the automatic headlight beam level control system, headlight leveling ECU assembly initialization is impossible. Perform troubleshooting before initialization.


  1. SYNCHRONIZE VEHICLE INFORMATION (for Multi-information Display (Segment LCD Type))


    1. When using the GTS:


      1. Turn the ignition switch off.

      2. Connect the GTS to the DLC3.

      3. Turn the ignition switch to ON, and check that the headlight leveling warning light in the combination meter assembly flashes at 0.5 Hz.

      4. Enter the following menus: Body Electrical / HL AutoLeveling / Utility / ECU Information Sync.


        Body Electrical > HL AutoLeveling > Utility
        Tester Display
        ECU Information Sync

      5. Check the display on the GTS and press "Next".

      6. Check that the headlight leveling warning light on the combination meter assembly flashes 6 times at 2 Hz.

      7. Press "Exit" and turn the ignition switch off.

        Note

        After synchronizing the vehicle information, make sure to initialize the headlight leveling ECU assembly.

    2. When not using the GTS:


      1. Turn the ignition switch to ON, and check that the headlight leveling warning light in the combination meter assembly flashes at 0.5 Hz.

      2. Using the light control switch, turn the low beam headlights on and off 8 times within 20 seconds after turning the ignition switch to ON.

        Note

        Turn the low beam headlights on and off at less than 2-second intervals.

        Tech Tips

        If this step cannot be completed within 20 seconds, turn the ignition switch off. Then, turn the ignition switch to ON and restart the procedure.

      3. Check that the headlight leveling warning light on the combination meter assembly flashes 6 times at 2 Hz.

      4. Turn the ignition switch off.

        Note

        After synchronizing the vehicle information, make sure to initialize the headlight leveling ECU assembly.

  2. SYNCHRONIZE VEHICLE INFORMATION (for Multi-information Display (Color Type))


    1. When using the GTS:


      1. Turn the ignition switch off.

      2. Connect the GTS to the DLC3.

      3. Turn the ignition switch to ON, and check that "Headlight system malfunction. Visit your dealer." is displayed on the multi-information display and flashes at 0.5 Hz.

      4. Enter the following menus: Body Electrical / HL AutoLeveling / Utility / ECU Information Sync.


        Body Electrical > HL AutoLeveling > Utility
        Tester Display
        ECU Information Sync

      5. Check the display on the GTS and press "Next".

      6. Check that "Headlight system malfunction. Visit your dealer." is displayed on the multi-information display and flashes 6 times at 2 Hz.

      7. Press "Exit" and turn the ignition switch off.

        Note

        After synchronizing the vehicle information, make sure to initialize the headlight leveling ECU assembly.

    2. When not using the GTS:


      1. Turn the ignition switch to ON, and check that "Headlight system malfunction. Visit your dealer." is displayed on the multi-information display and flashes at 0.5 Hz.

      2. Using the light control switch, turn the low beam headlights on and off 8 times within 20 seconds after turning the ignition switch to ON.

        Note

        Turn the low beam headlights on and off at less than 2-second intervals.

        Tech Tips

        If this step cannot be completed within 20 seconds, turn the ignition switch off. Then, turn the ignition switch to ON and restart the procedure.

      3. Check that "Headlight system malfunction. Visit your dealer." is displayed on the multi-information display and flashes 6 times at 2 Hz.

      4. Turn the ignition switch off.

        Note

        After synchronizing the vehicle information, make sure to initialize the headlight leveling ECU assembly.

  3. HEADLIGHT LEVELING ECU ASSEMBLY INITIALIZATION PROCEDURE (for Multi-information Display (Segment LCD Type))


    1. Prepare the vehicle for initialization.


      1. Unload the vehicle, ensuring that the spare tire, tools and jack are in their original positions.

      2. Check that there are no occupants in the vehicle.

      3. Turn the headlights off.

      4. Stop the vehicle on a level surface and keep the vehicle height unchanged.

    2. Check the headlight leveling warning light.


      1. Turn the ignition switch to ON, and check the headlight leveling warning light.

        Tech Tips

        If the warning light does not come on when the ignition switch is turned to ON, perform troubleshooting according to Problem Symptoms Table.

        Click here

      2. Perform initialization.


        1. A01T8R3C01
        3. *a DLC3

Using SST, connect terminals 4 (CG) and 8 (LVL) of the DLC3.

SST
09843-18040
  • A01TBCIC01
    *a Fuel Receiver Gauge

    Turn the low beam headlights on and off using the light control switch within 20 seconds after connecting the terminals.

    Tech Tips

    The number of times the low beam headlights need to be turned on and off is determined by the current fuel level as shown below.

    Fuel Level Number of Times to Turn Low Beam Headlights On and Off
    Within A range 1
    Within B range 2
    Within C range 3
    Within D range 4
    Within E range 5

    Note


    • Turn the low beam headlights on and off in intervals of less than 3-seconds.

    • Be sure to operate the light control switch from outside the vehicle.

  • Check the warning light.

    Tech Tips


  • Check that initialization has finished normally and turn the ignition switch off.

  • HEADLIGHT LEVELING ECU ASSEMBLY INITIALIZATION (for Multi-information Display (Color Type))


    1. Prepare the vehicle for initialization.


      1. Unload the vehicle, ensuring that the spare tire, tools and jack are in their original positions.

      2. Check that there are no occupants in the vehicle.

      3. Turn the headlights off.

      4. Stop the vehicle on a level surface and keep the vehicle height unchanged.

    2. Check the display of "Headlight System Malfunction Visit Your Dealer" on the multi-information display.


      1. Turn the ignition switch to ON, and check the warning message.

  • Perform initialization.


    1. A01T8R3C01
    • *a DLC3

    Using SST, connect terminals 4 (CG) and 8 (LVL) of the DLC3.

    SST
    09843-18040
  • A01TCKOC01
    *a Fuel Receiver Gauge

    Turn the low beam headlights on and off using the light control switch within 20 seconds after connecting the terminals.

    Tech Tips

    The number of times the low beam headlights need to be turned on and off is determined by the current fuel level as shown below.

    Fuel Level Number of Times to Turn Low Beam Headlights On and Off
    Within A range 1
    Within B range 2
    Within C range 3
    Within D range 4
    Within E range 5

    Note


    • Turn the low beam headlights on and off in intervals of less than 3-seconds.

    • Be sure to operate the light control switch from outside the vehicle.

  • Check the display of "Headlight System Malfunction Visit Your Dealer" on the multi-information display.

    Tech Tips


  • Check that initialization has finished normally and turn the ignition switch off.