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Home >> Lexus >> 2014 >> IS 350 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Lighting System (Ext) - Diagnostic Codes & Circuit Tests >> Lighting System >> DTC B2439: Headlight LH Circuit; DTC B243A: Headlight RH Circuit [09/2020 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize* the headlight ECU sub-assembly LH.

    Refer to INITIALIZATION [09/2020 - ]

  • When replacing the headlight ECU sub-assembly LH, always replace it with a new one. If a headlight ECU sub-assembly LH which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
    1. *: w/ Automatic Headlight Beam Level Control System
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