Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2012 Toyota Prius ThreeFACTORY OEM SERVICE PROCEDURE

Operation Check

SMART KEY SYSTEM OPERATION INSPECTION
1. Check the entry unlock function.
  1. Use the wireless lock operation to lock the doors. With the key outside the vehicle, touch a front door outside handle assembly (touch sensor) and check that the door unlocks.
2. Check the entry unlock operation detection area.
  1. Step 1: Hold the key at the same height as the door outside handle assembly (approximately 0.8 m (2.62 ft.)). Make sure that the direction of the key is as shown in the illustration.
  2. Step 2: Check that when the key is brought within 0.7 to 1.0 m (2.30 to 3.28 ft.) of the vehicle, the system enters unlock standby mode.
    
    Fig 1: View Of Key Diagnostic Mode Inspection (Driver Side)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    HINT:
    
    When the system enters unlock standby mode, the key LED illuminates.
  3. Step 3: After the system enters unlock standby mode, touch the door outside handle assembly (touch sensor) within 3 seconds. Check that the door unlocks.
    
    Fig 2: Touching Door Outside Handle Assembly (Touch Sensor)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Factory Service Tools

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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.

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