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DTC C1A10: Front Radar Sensor [08/2013 - ]: Procedure

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. REPLACE MILLIMETER WAVE RADAR SENSOR ASSEMBLY 

    Refer to REMOVAL [08/2013 - ]

    NEXT: Go to next step 

  2. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY 

    Refer to ADJUSTMENT [08/2013 - ]

    NEXT: Go to next step 

  3. CHECK FOR DTCs (DTC C1A10) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2013 - ] .
    4. Perform the following to make sure that the DTC detection conditions are met.

      HINT: 

      If the detection conditions are not met, the malfunction cannot be detected.

      1. Drive the vehicle at a speed for which cruise control operation is possible.
      2. Turn the cruise control system on using the cruise control switch (ON-OFF button).
      3. Push the cruise control switch to -/SET to begin control of vehicle speed using the cruise control system.
    5. Enter the following menus: Powertrain / Radar Cruise / Trouble Codes.
    6. Check for DTCs.

      Result

      Result Proceed to
      DTC is not output A
      DTC C1A10 is output B
    7. Turn the power switch off.

    B → See step   4 

    A → END 

  4. REPLACE DRIVING SUPPORT ECU ASSEMBLY. Refer to  REMOVAL [08/2013 - ]