DTC C1A11-00: Front Radar Sensor Optical Axis Misalignment Malfunction [06/2018 - 08/2021]: Procedure

WARNING: This page is about a different car, the 2021 Lexus ES 350, 2021 Lexus ES 250, 2020 Lexus ES 350, and 2019 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY

Perform millimeter wave radar sensor assembly beam axis adjustment.

Refer to ADJUSTMENT [06/2018 - 08/2020] , or refer to ADJUSTMENT [08/2020 - 08/2021]

Result

Proceed to
NEXT

Result:

See step 2

CHECK FOR DTCs

Clear the DTCs.
Body Electrical > Front Radar Sensor > Clear DTCs
Make sure that the DTC detection conditions are met.
HINT:

If the detection conditions are not met, the system cannot detect the malfunction.

Check for DTCs.

Body Electrical > Front Radar Sensor > Trouble Codes

Result

Result	Proceed to
DTC C1A11-00 is not output	A
DTC C1A11-00 is output	B

Result:

END

Result:

REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY. Refer to COMPONENTS [06/2018 - ]