Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Front Radar Sensor Optical Axis Misalignment Malfunction (C1A1100)
DESCRIPTION
The millimeter wave radar sensor assembly performs self-diagnosis to check for misalignment of its beam axis. If misalignment is detected, the millimeter wave radar sensor assembly stores DTC C1A1100.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1A1100 | Front Radar Sensor Optical Axis Misalignment Malfunction | When the engine switch is on (IG), the millimeter wave radar sensor assembly detects beam axis misalignment |
|
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the millimeter wave radar sensor assembly, always replace it with a new one. If a millimeter wave radar sensor assembly which was installed to another vehicle is used, the information stored in the millimeter wave radar sensor assembly will not match the information from the vehicle and a DTC may be stored.
-
When the millimeter wave radar sensor assembly has been replaced with a new one, it is necessary to perform millimeter wave radar sensor assembly adjustment and front radar acceleration sensor calibration, and to clear the vehicle control history.
Click here
.gif)
PROCEDURE
| 1. | ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
(a) Perform millimeter wave radar sensor assembly beam axis adjustment.
Click here
|
.gif)
| 2. | CHECK FOR DTCs |
(a) Clear the DTCs.
Body Electrical > Front Radar Sensor > Clear DTCs(b) Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(c) Check for DTCs.
Body Electrical > Front Radar Sensor > Trouble Codes| Result | Proceed to |
|---|---|
| DTC C1A1100 is not output | A |
| DTC C1A1100 is output | B |
| A | .gif) | END |
| B | | REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY |
Vehicle Control History
VEHICLE CONTROL HISTORY NOTICE: Make sure to record any output Vehicle Control History codes before clearing them and checking the Vehicle Control History again. CHECK VEHICLE CONTROL HISTORY (FRONT R ...
Main Microcomputer in Front Radar Sensor Calibration/Parameter Memory Failure (C1A8C46,C1A8D1C,C1A9000,C1A9100)
DESCRIPTION When an internal malfunction is detected in the millimeter wave radar sensor assembly, a DTC is stored. DTC No. Detection Item DTC Detection Condition Trouble Area C1A8C46 M ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Can Communication System: Dtc Combination Table
DTC COMBINATION TABLE HOW TO INTERPRET COMMUNICATION DTCS (DTCS THAT START WITH U) (a) If a CAN communication error cannot be reproduced, determine the suspected malfunctioning part using the DTCs stored in ECUs that are connected to the CAN buses by following the procedure below. HINT: Communicatio ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Safety Connect System: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspect ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
0.0137