Last Modified: 05-08-2025 6.11:8.1.0 Doc ID: RM100000001FXT2
Model Year Start: 2019 Model: RAV4 Prod Date Range: [11/2018 -           ]
Title: PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): C1AE796; Ultrasonic Sensor (Rear Left Center) Component Internal Failure; 2019 - 2025 MY RAV4 [11/2018 -        ]

DTC

C1AE796

Ultrasonic Sensor (Rear Left Center) Component Internal Failure

DESCRIPTION

The rear center ultrasonic sensor (RLC sensor) is installed on the rear bumper. The clearance warning ECU assembly detects obstacles based on signals it receives from the rear center ultrasonic sensor (RLC sensor). If an open circuit or other malfunction occurs in the rear center ultrasonic sensor (RLC sensor), the rear center ultrasonic sensor (RLC sensor) does not operate correctly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AE796

Ultrasonic Sensor (Rear Left Center) Component Internal Failure

Rear center ultrasonic sensor (RLC sensor) failure
  • Rear center ultrasonic sensor (RLC sensor)
  • Clearance warning ECU assembly

CAUTION / NOTICE / HINT

NOTICE:

  • Perform registration after replacing or removing and installing the ultrasonic sensor or clearance warning ECU assembly.

    Click here 2019 - 2025 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): CALIBRATION

  • If a DTC is detected again after the repair, turn the engine switch on (IG) and turn the intuitive parking assist system on, and then clear the DTC.

    Click here 2019 - 2025 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): DTC CHECK / CLEAR

PROCEDURE

1.

CHECK FOR DTC

(a) Check for DTCs.

Click here 2019 - 2025 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): DTC CHECK / CLEAR

Body Electrical > Clearance Warning > Trouble Codes

(b) Clear the DTCs.

Click here 2019 - 2025 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): DTC CHECK / CLEAR

Body Electrical > Clearance Warning > Clear DTCs

(c) Recheck for DTCs.

Click here 2019 - 2025 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): DTC CHECK / CLEAR

Body Electrical > Clearance Warning > Trouble Codes

Result

Proceed to

DTCs is not output

A

Only DTC C1AE796 is output

B

DTC C1AE796 and C1AE787 are output

C
A

USE SIMULATION METHOD TO CHECK

C

GO TO DTC (C1AE787) 2019 - 2023 MY RAV4 [11/2018 - 10/2023]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): C1AE787; Ultrasonic Sensor (Rear Left Center) Missing Message 2024 - 2025 MY RAV4 [10/2023 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): C1AE787; Ultrasonic Sensor (Rear Left Center) Missing Message

B

2.

REPLACE REAR CENTER ULTRASONIC SENSOR (RLC SENSOR)

(a) Replace the rear center ultrasonic sensor (RLC sensor) with a known good one.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; PARK ASSIST / MONITORING: ULTRASONIC SENSOR (for Rear): REMOVAL 2019 MY RAV4 RAV4 HV [02/2019 - 10/2019]; PARK ASSIST / MONITORING: ULTRASONIC SENSOR (for Rear): REMOVAL 2020 MY RAV4 RAV4 HV [10/2019 - 08/2020]; PARK ASSIST / MONITORING: ULTRASONIC SENSOR (for Rear): REMOVAL 2021 MY RAV4 RAV4 HV [08/2020 - 12/2021]; PARK ASSIST / MONITORING: ULTRASONIC SENSOR (for Rear): REMOVAL 2022 MY RAV4 RAV4 HV [12/2021 - 10/2022]; PARK ASSIST / MONITORING: ULTRASONIC SENSOR (for Rear): REMOVAL 2023 MY RAV4 RAV4 HV [10/2022 - 10/2023]; PARK ASSIST / MONITORING: ULTRASONIC SENSOR (for Rear): REMOVAL 2024 - 2025 MY RAV4 RAV4 HV [10/2023 -        ]; PARK ASSIST / MONITORING: ULTRASONIC SENSOR (for Rear): REMOVAL

HINT:

All of the sensors are interchangeable. To confirm whether a sensor is functioning normally, switch it with a known good sensor from the other end of the vehicle.

NEXT

3.

CHECK FOR DTC

(a) Check for DTCs.

Click here 2019 - 2025 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): DTC CHECK / CLEAR

Body Electrical > Clearance Warning > Trouble Codes

(b) Clear the DTCs.

Click here 2019 - 2025 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): DTC CHECK / CLEAR

Body Electrical > Clearance Warning > Clear DTCs

(c) Recheck for DTCs.

Click here 2019 - 2025 MY RAV4 [11/2018 -        ]; PARK ASSIST / MONITORING: INTUITIVE PARKING ASSIST SYSTEM (for Gasoline Model with Parking Support Brake System): DTC CHECK / CLEAR

Body Electrical > Clearance Warning > Trouble Codes

Result

Proceed to

DTC C1AE796 is not output

A

DTC C1AE796 is output

B
A

END (REAR CENTER ULTRASONIC SENSOR [RLC SENSOR] WAS DEFECTIVE)
B

REPLACE CLEARANCE WARNING ECU ASSEMBLY 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; PARK ASSIST / MONITORING: CLEARANCE WARNING ECU: REMOVAL 2019 - 2025 MY RAV4 RAV4 HV [02/2019 -        ]; PARK ASSIST / MONITORING: CLEARANCE WARNING ECU: REMOVAL