DTC B2451: Variation Code not Written [09/2020 - ]: Procedure
WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2024 Lexus IS 500, 2024 Lexus IS 350, 2024 Lexus IS 300, 2023 Lexus IS 500, and 2023 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.
- SYNCHRONIZE VEHICLE INFORMATION
- Synchronize the vehicle information.
Refer to INITIALIZATION [09/2020 - ]
Result
Proceed to NEXT
Result:
NEXT
See step 2
- Synchronize the vehicle information.
- CLEAR DTC
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.
- Clear the DTCs.
Body Electrical > HL AutoLeveling > Clear DTCs
Result
Proceed to NEXT
Result:
NEXT
See step 3
- CHECK FOR DTC
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.
- Check for DTCs.
Body Electrical > HL AutoLeveling > Trouble Codes
OK
DTC B2451 is not output.
HINT:
If the headlight ECU sub-assembly LH stores DTC B2451 even though the vehicle information has been synchronized, the headlight ECU sub-assembly LH may be malfunctioning.
Result
Proceed to OK NG
Result:
OK
END (VEHICLE SPECIFICATIONS WERE NOT STORED)
Result:
NG
REPLACE HEADLIGHT ECU SUB-ASSEMBLY LH. Refer to REMOVAL [09/2020 - ]