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Home >> Lexus >> 2024 >> RC 350 Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Lighting System (Triple Beam Headlight) - Diagnostic Codes & Circuit Tests) >> LIGHTING SYSTEM (for Triple Beam Headlight) >> DTC B2451: Vehicle Specifications have not been Stored [09/2014 - 10/2018] >> Procedure

DTC B2451: Vehicle Specifications have not been Stored [09/2014 - 10/2018]: Procedure

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2018 Lexus RC 350, 2018 Lexus RC 300, 2017 Lexus RC 350, 2017 Lexus RC 300, and 2017 Lexus RC 200t. However, it is still accessible from the selected car via links, so may be relevant.
  1. SYNCHRONIZE VEHICLE INFORMATION 
    1. Synchronize the vehicle information.

      Refer to INITIALIZATION [09/2014 - 11/2017] , or refer to INITIALIZATION [11/2017 - 10/2018]

      Body Electrical > HL AutoLeveling > Utility 

      Tester Display
      ECU Information Sync

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CLEAR DTC 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [09/2014 - 10/2018]

      Body Electrical > HL AutoLeveling > Clear DTCs 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. CHECK FOR DTC 
    1. Turn the engine switch on (IG).
    2. Check for DTCs.

      Refer to DTC CHECK / CLEAR [09/2014 - 10/2018]

      Body Electrical > HL AutoLeveling > Trouble Codes 

      OK

      DTC B2451 is not output.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END (VEHICLE SPECIFICATIONS WERE NOT STORED) 

    Result: 

    NG 

    REPLACE HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY LH. Refer to  REMOVAL [09/2014 - 10/2018]