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Home >> Lexus >> 2020 >> LS 500h AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Lighting System (Ext) - Diagnostic Codes (1 Of 2) >> Lighting System >> DTC B124B: Automatic High Beam System [10/2017 - 09/2018] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this symptom

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2017 - 09/2018]

  • Before replacing the main body ECU (multiplex network body ECU), refer to Registration.

HINT: 

If the forward recognition camera stores a DTC for a malfunction of any of the following, this DTC will be stored simultaneously. 

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