DTC C1AFA: Blind Spot Monitor Beam Axis Misalignment [06/2018 - 09/2022]: Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2022 Lexus ES 350, 2022 Lexus ES 250, 2021 Lexus ES 350, 2021 Lexus ES 250, and 2020 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FOR DTC
- Using the Techstream, check for DTCs according to the prompts on the screen.
HINT:
After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes
- Clear the DTCs according to the screen on the Techstream.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs
- Recheck for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes
HINT:
- DTC C1AFA is stored when a malfunction signal sent from the blind spot monitor system is detected.
- If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C1AFA will not be output again.
- If DTC C1AFA is output frequently, duplicate the conditions that cause the problem symptoms and perform troubleshooting again, even though the DTC was not output when rechecking for DTCs.
Result
Result Proceed to DTC C1AFA is output A DTC C1AFA is not output B
Result:
A
GO TO BLIND SPOT MONITOR SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]
Result:
B
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]
- Using the Techstream, check for DTCs according to the prompts on the screen.