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HOMESERVICE MANUALSTOYOTA2012PRIUS THREEREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCRUISE CONTROL SYSTEMSDYNAMIC RADAR CRUISE CONTROL SYSTEM (EXCEPT PLUG-IN) (DIAGNOSTIC CODES & CIRCUIT TESTS)DYNAMIC RADAR CRUISE CONTROL SYSTEMDTC C1A0C: OBJECT RECOGNITION CAMERA REGION CODE MISMATCHPROCEDURE
2012 Toyota Prius Three

DTC C1A0C: Object Recognition Camera Region Code Mismatch: Procedure

2012 Toyota Prius ThreeSECTION Procedure
  1. REPLACE LANE RECOGNITION CAMERA SENSOR ASSEMBLY 
    1. Replace lane recognition camera sensor assembly. Refer to REMOVAL .
    2. Adjust the lane recognition camera sensor assembly. Refer to ADJUSTMENT .

    NEXT: Go to next step 

  2. CHECK DTC OUTPUT 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Clear the DTCs. Refer to DTC CHECK / CLEAR .
    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 of 40 km/h (25 mph) or more.
      2. Turn the cruise control main switch on.
      3. Push the -SET switch to activate the cruise control.
    5. Enter the following menus: Powertrain / Radar Cruise / Trouble Codes.
    6. Read the DTCs.

      Result

      Result Proceed to
      DTC is not output A
      DTC is output B

    B → See step   4 

    A → See step   3 

  3. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 
  4. REPLACE DRIVING SUPPORT ECU. Refer to  REMOVAL 
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.