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HOMESERVICE MANUALSTOYOTA2012PRIUS THREEREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEIGNITION SYSTEMSMART KEY SYSTEM (KEYLESS START) (EXCEPT PLUG-IN) (DIAGNOSTICS - INTRODUCTION)SMART KEY SYSTEM (FOR START FUNCTION)PRECAUTIONPRECAUTION
2012 Toyota Prius Three

SMART KEY SYSTEM (for Start Function): Precaution: Precaution

2012 Toyota Prius ThreeSECTION Precaution
  1. PRECAUTIONS FOR PUSH-BUTTON START FUNCTION 
    1. Before starting hybrid control system, firmly depress the brake pedal until the indicator in the power switch turns green.
    2. The smart key system, wireless door lock control system and engine immobilizer system may not operate normally, or the size of the operation area may decrease in the following situations:
      1. When the smart key battery is depleted.
      2. When any facility that generates strong radio waves or electrical noise such as a TV tower, power plant, gas station, broadcast station, large video-billboard or airport are located near the inspection site.
      3. When the key is located near a wireless device such as a radio, cellular phone or cordless telephone.
      4. When the smart key is in contact with or covered with a metal object similar to the following:
        • Metal or aluminum plated card
        • Aluminum film from a cigarette box
        • Metallic wallet or bag
        • Coins
        • Heating pad
        • Media such as CDs or DVDs
      5. When a wireless remote is operated near the vehicle.
      6. When the key is carried with following items:
        • Electronic key or wireless remote from another vehicle
        • PC or similar handheld device
        • Digital audio player
        • Portable game device
      7. When a metallic film is applied to the rear glass.
  2. WHEN KEY BATTERY IS LOW 
    1. When the key battery is depleted, the hybrid control system cannot be started using the smart function. For how to start the hybrid control system when the key battery is depleted, see Description. Refer to SYSTEM DESCRIPTION .
    2. If the electrical key is held near the power switch to start the hybrid control system when the electrical key battery is depleted, the following warnings will sound:
      1. Driver door open → closed
        • An exit warning will sound if R, N, D or B is selected and the power source (power switch) is in a mode other than off.
        • An exit warning will sound if park (P) is selected and the power source is in a mode other than off.
      2. Doors other than the driver door open → closed
        • A warning will sound to indicate that the electrical key has been taken out of the vehicle.

        These warnings will sound because it is not possible for the vehicle to determine if the key is present in the vehicle (due to the depleted key battery). These warnings do not indicate system malfunctions.

  3. EMERGENCY HYBRID CONTROL SYSTEM STOP CONTROL 
    1. If it is necessary to stop the hybrid control system in an emergency while driving the vehicle, push and hold the power switch for more than 3 seconds.

      While driving, the power switch should only be operated in the event of on emergency.

      NOTE:

      If the hybrid control system stops while the vehicle is being driven, this could lead to an accident.

  4. EMERGENCY HYBRID CONTROL SYSTEM START CONTROL 
    1. If there is a malfunction in the stop light switch or STOP fuse, their signals may not be correctly transmitted to the power management control ECU. This may result in the hybrid control system not starting even if the power switch is pressed while the brake pedal is depressed and park (P) is selected.

      To activate the hybrid control system:

      1. Push the P position switch.
      2. Parking brake pedal is depressed.
      3. Turn the power switch from off to on (ACC).
      4. Brake pedal is depressed.
      5. Press and hold the power switch for 15 seconds or more.
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