DTC B2420: HL AutoLeveling ECU Failure [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.
- CHECK FOR DTC
- Clear the DTCs.
Refer to DTC CHECK / CLEAR [09/2014 - 10/2018]
Body Electrical > HL AutoLeveling > Clear DTCs
- Check for DTCs.
Refer to DTC CHECK / CLEAR [09/2014 - 10/2018]
Body Electrical > HL AutoLeveling > Trouble Codes
OK
DTC B2420 is not output.
Result
Proceed to OK NG
Result:
OK
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 10/2015] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - 11/2017] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2017 - 10/2018]
Result:
NG
REPLACE HEADLIGHT LEVELING ECU ASSEMBLY. Refer to REMOVAL [09/2014 - 10/2018]
- Clear the DTCs.