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Home >> Lexus >> 2017 >> IS 350 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Automatic Headlight Beam Level Control System - Diagnostic Codes & Circuit Tests >> Automatic Headlight Beam Level Control System >> DTC B2450: Height Sensor Initialization Incomplete [10/2016 - 09/2020] >> Procedure

DTC B2450: Height Sensor Initialization Incomplete [10/2016 - 09/2020]: Procedure

  1. INITIALIZATION NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH 
    1. Perform initialization of the No. 1 headlight ECU sub-assembly LH.

      Refer to INITIALIZATION [10/2016 - 09/2020]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CLEAR DTC 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.
    5. Clear the DTCs.

      Body Electrical > HL AutoLeveling > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. CHECK FOR DTC 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.
    5. Check for DTCs.

      Body Electrical > HL AutoLeveling > Trouble Codes 

      OK

      DTC B2450 is not output.

      HINT: 

      If the No. 1 headlight ECU sub-assembly LH stores DTC B2450 even though the ECU has been initialized, there may be a malfunction in the No. 1 headlight ECU sub-assembly LH.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (INITIALIZATION WAS NOT COMPLETED) 

    Result: 

    NG 

    REPLACE NO. 1 HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [10/2016 - 09/2020]