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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Body & Frame >> Seats >> Seats - Service Information (1 Of 3) >> FRONT SEAT ASSEMBLY (for Power Seat) >> Removal [10/2021 - 10/2022] >> Caution / Notice / Hint

Caution / Notice / Hint

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during front seat assembly removal/installation are shown below.

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED (FOR HV MODEL)

Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
Disconnect cable from negative auxiliary battery terminal Perform steering sensor zero point calibration Lane Control System Refer to INITIALIZATION [12/2019 - ]
Parking Support Brake System*1
Pre-collision System
Lighting System (EXT) (w/ AFS)
Memorize steering angle neutral point Parking Assist Monitor System Refer to INITIALIZATION [12/2019 - 10/2022]
Panoramic View Monitor System Refer to INITIALIZATION [12/2019 - 10/2022]
Initialize back door lock Power Door Lock Control System Refer to INITIALIZATION [12/2019 - 11/2023]
Reset back door close position Power Back Door System Refer to INITIALIZATION [12/2019 - 11/2023]
  • Occupant detection ECU
  • Front passenger seat
 Zero point calibration (Occupant classification system)
  • Occupant Classification System
  • Passenger Airbag ON/OFF indicator
  • Airbag System (Front passenger side)
  • Seat Belt Warning System (Front passenger)
 Refer to INITIALIZATION [10/2021 - 11/2023]
  • Position control ECU assembly*
  • Reclining motor (separate type front seatback spring assembly)*
  • Slide motor (separate type front seat cushion spring assembly)*
  • Front vertical motor (power seat tilt motor assembly LH)*
  • Lifter motor (power seat lifter motor assembly LH)*
 Initialize position control ECU Front Power Seat Control System (w/ Memory) Refer to REGISTRATION [12/2019 - 11/2023]

*: Even when not replacing the part, it is necessary to perform the specified necessary procedures after installation.*1: Learning can also be performed using the GTS.

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED (FOR GASOLINE MODEL)

Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
Disconnect cable from negative auxiliary battery terminal Idle the engine for approximately 5 to 60 minutes or drive the vehicle until stop and start control is permitted Stop and Start System Refer to PRECAUTION [12/2019 - 10/2022]
Perform steering sensor zero point calibration Lane Control System Refer to INITIALIZATION [12/2019 - ]
Parking Support Brake System*1
Pre-collision System
Lighting System (EXT) (w/ AFS)
Memorize steering angle neutral point Parking Assist Monitor System Refer to INITIALIZATION [12/2019 - 10/2022]
Panoramic View Monitor System Refer to INITIALIZATION [12/2019 - 10/2022]
Initialize back door lock Power Door Lock Control System Refer to INITIALIZATION [12/2019 - 11/2023]
Reset back door close position Power Back Door System Refer to INITIALIZATION [12/2019 - 11/2023]
  • Occupant detection ECU
  • Front passenger seat
 Zero point calibration (Occupant Classification System)
  • Occupant Classification System
  • Passenger Airbag ON/OFF indicator
  • Airbag System (Front passenger side)
  • Seat Belt Warning System (Front passenger)
 Refer to INITIALIZATION [10/2021 - 11/2023]
  • Position control ECU assembly*
  • Reclining motor (separate type front seatback spring assembly)*
  • Slide motor (separate type front seat cushion spring assembly)*
  • Front vertical motor (power seat tilt motor assembly LH)*
  • Lifter motor (power seat lifter motor assembly LH)*
 Initialize position control ECU Front Power Seat Control System (w/ Memory) Refer to REGISTRATION [12/2019 - 11/2023]

*: Even when not replacing the part, it is necessary to perform the specified necessary procedures after installation.*1: Learning can also be performed using the GTS.

WARNING:
  • Be sure to read Precaution thoroughly before servicing.

    Refer to PRECAUTION [12/2019 - 11/2023]

    GTY571595Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  • Wear protective gloves. Sharp areas on the parts may injure your hands.
    GTY848043Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE:
  • If the front seat airbag assembly has been deployed, replace the front seat airbag assembly, separate type front seatback spring assembly, separate type front seatback pad and separate type front seatback cover with the necessary parts in accordance with the extent of the collision damage.
  • If the front seat cushion airbag assembly RH has been deployed, replace the front seat cushion airbag assembly RH, separate type front seat cushion spring assembly, separate type front seat cushion pad and separate type front seat cushion cover with the necessary parts in accordance with the extent of the collision damage.
  • After the ignition switch is turned off, the radio and display receiver assembly or the radio receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 120 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal.

HINT: 

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