LEXUS PARKING ASSIST-SENSOR SYSTEM, Diagnostic DTC:C1AE4

DTC Code DTC Name
C1AE4 Front Right Sensor Malfunction

DESCRIPTION

The No. 2 ultrasonic sensor (front corner sensor RH) is installed on the front bumper. The ECU detects obstacles based on signals received from the No. 2 ultrasonic sensor (front corner sensor RH). If the No. 2 ultrasonic sensor (front corner sensor RH) has an open circuit or other malfunction, it will not function normally.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AE4

Front Right Sensor Malfunction

A malfunction of the No. 2 ultrasonic sensor (front corner sensor RH).

  • No. 2 ultrasonic sensor (front corner sensor RH)

  • Clearance warning ECU

CAUTION / NOTICE / HINT

Note:

If the DTC is output after repairs, turn the engine switch on (IG) and turn the LEXUS parking assist-sensor system on. Then clear the DTC (Click here).

PROCEDURE

  1. CHECK FOR DTC

    1. Check for DTCs.

      Click here

      Body Electrical > Clearance Sonar > Trouble Codes

    Result

    Result

    Proceed to

    Only DTC C1AE4 is output

    A

    DTC C1AE4 and C1AEC are output

    B

    No DTC is output

    C
    B

    GO TO DTC (C1AEC)

    Click here

    C

    USE SIMULATION METHOD TO CHECK

    Click hereClick here

    A

  2. REPLACE NO. 2 ULTRASONIC SENSOR (FRONT CORNER SENSOR RH)

    1. Replace the No. 2 ultrasonic sensor (front corner sensor RH) with a normally functioning sensor.

      Click here

      Tip:

      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.

      Result

      Result

      NEXT
    NEXT

  3. CHECK FOR DTC

    1. Clear the DTCs.

      Click here

      Body Electrical > Clearance Sonar > Clear DTCs

    2. Check for DTCs.

      Click here

      Body Electrical > Clearance Sonar > Trouble Codes

      Result

      Result

      Proceed to

      DTC C1AE4 is output

      A

      No DTC is output

      B
    A

    REPLACE CLEARANCE WARNING ECU

    Click here

    B

    END (NO. 2 ULTRASONIC SENSOR WAS DEFECTIVE)