Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Fr Sensor Initialization Incomplete (C1AF3)
DESCRIPTION
When it is judged that the front sensors have not been initialized, the clearance warning ECU assembly stores DTC C1AF3.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1AF3 | Fr Sensor Initialization Incomplete | Front sensor not initialized |
|
CAUTION / NOTICE / HINT
NOTICE:
-
If DTC C1AF3 is output after performing repairs, turn the engine switch on (IG) and turn the intelligent clearance sonar system on to clear the DTC.
Click here
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-
After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).
Click here
PROCEDURE
| 1. | INITIALIZE FRONT CENTER ULTRASONIC SENSOR AND FRONT CORNER ULTRASONIC SENSOR |
(a) Initialize the front center ultrasonic sensor and front corner ultrasonic sensor.
Click here
|
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| 2. | CHECK FOR DTC |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
Click here
HINT:
After turning the engine switch from off to on (IG), wait 10 seconds or more before checking for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes| Result | Proceed to |
|---|---|
| DTC C1AF3 is output | A |
| DTC C1AF3 is not output | B |
HINT:
If DTC C1AF3 is still output after initializing the front center ultrasonic sensor and front corner ultrasonic sensor 3 times, replace the clearance warning ECU assembly.
| A |  | REPLACE CLEARANCE WARNING ECU ASSEMBLY |
| B | | END (FRONT SENSORS WERE NOT INITIALIZED) |
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DESCRIPTION When it is judged that the rear sensors have not been initialized, the clearance warning ECU assembly stores DTC C1AF4. DTC No. Detection Item DTC Detection Condition Trouble Area ...
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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