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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Wireless Charging System - Diagnostics & Circuit Tests >> Wireless Charging System >> System Description [10/2022 - 11/2023] >> System Description [10/2022 - 11/2023]

System Description [10/2022 - 11/2023]

  1. WIRELESS CHARGER FUNCTION OUTLINE 
    1. The wireless charging system enables Qi-compatible* rechargeable devices, such as a cellular phone, to be recharged by merely placing it on the charging area of the mobile wireless charger cradle assembly.

      HINT: 

      *: Qi (pronounced chee) is a wireless technology which allows devices to recharge without using any wires.

    2. Qi-compatible devices which do not fit within the charging area cannot be used. If a Qi-compatible device does not operate normally, refer to the owner's manual of the device.
    3. Qi-compatible rechargeable devices can be charged.

      HINT: 

      • "Qi" and "Qi" logo are trademarks of the Wireless Power Consortium (WPC).
      • Although the wireless charging system meets Qi standards, compatibility with all Qi-compatible devices is not guaranteed.
  2. CHARGING INDICATOR STATUS 
    GTY1119668Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Indicator Light (Green/Amber)
    *b Charging Area
    *c Charging Tray
    *d Approximately 70 mm (2.76 in.)
    *e Approximately 60 mm (2.36 in.)
    1. The indicator light shows the operation condition of the wireless charging system.
      Indicator Operation Condition
      Condition Color
      Off - Wireless charging system is turned off
      On Green
      • Wireless charging system is on (stand-by)
      • Charging is complete*1
      • Charging is temporarily stopped
      On Amber A rechargeable device is being charged
      Blinks
      (Pattern 1)*2      		 Green There is a communication malfunction between the wireless charging system and multimedia system
      Blinks
      (Pattern 1)*2      		 Amber There is a communication malfunction between the wireless charging system and certification ECU (smart key ECU assembly)
      Blinks
      (Pattern 2)*2      		 Amber
      • A foreign object with a thickness of 2 mm (0.079 in.) or more between the charging area and rechargeable device is detected
      • A gap of 2 mm (0.079 in.) or more between the charging area and rechargeable device is detected
      • The rechargeable device is not placed correctly on the charging area
      • It is detected that the rechargeable device has been moved from the location where it was first placed when charging started
      Blinks
      (Pattern 3)*2      		 Amber The temperature of the mobile wireless charger cradle assembly is abnormally high

      *1: Some mobile devices, cases or accessories may not cause the indicator (green) to illuminate when charging is complete, even though they are Qi-compatible. Check the mobile device to confirm the charge status.

      *2: Refer to the following diagram for details about the indicator blinking patterns.

      GTY1073963Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. RESUMPTION OF CHARGING 
    1. After charging is complete, if the rechargeable device is left in the same position on the charging area, charging will resume after 30 minutes elapse.
    2. Charging will resume if the rechargeable device is moved or repositioned within the charging area, or replaced with another rechargeable device within 30 minutes of charging being completed.
    3. If the rechargeable device is moved while it is being charged, charging will resume when the device is placed on the charging area.

      HINT: 

      If charging is stopped and resumed repeatedly due to the rechargeable device being moved or a communication error between the wireless charging system and rechargeable device, charging will be prohibited after a certain number of times to protect the rechargeable device.

  4. SUSPENSION OF CHARGING DUE TO VERIFICATION OF ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY 
    1. The wireless charging system uses the same radio wave frequency that is used to perform verification of the electrical key transmitter sub-assembly. Therefore, when the electrical key transmitter sub-assembly verification is being performed, the certification ECU (smart key ECU assembly) sends a charging suspension signal to the wireless charging system to suspend charging.

      HINT: 

      • When charging is suspended due to the charging suspension signal, the indicator (green) will illuminate.
      • If there is an open in the charging suspension signal circuit, the indicator (amber) will blink (pattern 1).
    2. The certification ECU (smart key ECU assembly) sends the charging suspension signal when any of the following conditions is met:
      • Opening/closing the doors
      • Pressing the back door opener switch assembly
      • Closing the back door
      • Starting the hybrid system*1
      • Starting the engine*2
      • Moving the electrical key transmitter sub-assembly out of the detection area
      • The power source mode is set to ACC or IG and a door is open (a charging suspension signal is sent at certain intervals).
      • Setting the power source mode to ACC by pushing the power switch of the multi-display assembly (w/ ACC Customization Function)
        1. *1: HV models
        2. *2: Gasoline models
  5. CHARGING FREQUENCY SWITCHING FUNCTION 
    1. When noise is output on the AM radio during charging, the charging frequency automatically changes to maintain good radio reception.
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