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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 80 (Hybrid Transaxle System (P810) - Service Information) >> Hybrid Vehicle Transaxle >> Removal [12/2019 - 10/2022] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different variant/trim than selected.

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

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED

Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
Auxiliary battery terminal is disconnected/reconnected 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]
Replacement of ECM Perform Vehicle Identification Number (VIN) registration DTC is output Refer to REGISTRATION [12/2019 - ]
  • Replacement of engine assembly
  • Gas leak from exhaust system is repaired
Perform Inspection After Repair
  • Poor idle, etc.
  • Engine start function, etc.
Refer to INITIALIZATION [12/2019 - 10/2021] , or refer to INITIALIZATION [10/2021 - ]
Replacement of inverter with converter assembly Resolver learning
  • DTCs are stored
  • Slight vibration at a vehicle speed of 5 km/h (3 mph) or less
  • Shock or vibration during acceleration
for 2WD:
Refer to UTILITY [12/2019 - 11/2023]
for AWD:
Refer to UTILITY [12/2019 - 11/2023]
Replacement of hybrid vehicle transaxle assembly
  • Resolver learning
  • Initialize resolver
Front wheel alignment adjustment Perform "Calibration".
  • DTCs are stored
  • ABS warning light illuminates
  • Brake system warning light (yellow indicator) illuminates
  • Slip indicator light illuminates
  • VSC disabled or malfunctions
Refer to UTILITY [12/2019 - 11/2023]
Replacement of front bumper assembly*2 Front television camera view adjustment Panoramic View Monitor System Refer to CALIBRATION [12/2019 - 10/2022]
Replacement or removal and installation of 2 or more parts: 
  • Front television camera assembly, radiator grille sub-assembly or front bumper assembly
  • Rear television camera assembly
  • Side television camera assembly LH or outer rear view mirror assembly LH
  • Side television camera assembly RH or outer rear view mirror assembly RH
Television camera view adjustment Panoramic View Monitor System Refer to CALIBRATION [12/2019 - 10/2022]
Suspension, tires, etc.*3 Rear television camera assembly optical axis (Back camera position setting) Parking Assist Monitor System Refer to CALIBRATION [12/2019 - 10/2022]
  • Parking assist ECU initialization
  • Adjust steering angle
Panoramic View Monitor System Refer to CALIBRATION [12/2019 - 10/2022]
Perform headlight ECU sub-assembly LH initialization Lighting System (EXT) (w/ AFS) Refer to INITIALIZATION [12/2019 - 11/2023]
  • Replacement of headlight ECU sub-assembly LH
  • Replacement of headlight assembly LH
  • Synchronize the vehicle information
  • Perform headlight ECU sub-assembly LH initialization
Lighting System (EXT) (w/ AFS) Refer to INITIALIZATION [12/2019 - 11/2023]

*1: Learning can also be performed using the GTS.

*2: Even when not replacing the part, it is necessary to perform the specified necessary procedures after installation.

*3: If the vehicle height has changed due to suspension or tire replacement

WARNING:
  • Orange wire harnesses and connectors indicate high-voltage circuits. To prevent electric shock, always follow the procedure described in the repair information.
    GTY588409Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    for 2WD: Refer to PRECAUTION [12/2019 - 10/2022]

    for AWD: Refer to PRECAUTION [12/2019 - 10/2022]

  • To prevent electric shock, wear insulated gloves when working on wire harnesses and components of the high voltage system.
    GTY588386Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  • To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
    GTY563663Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  • To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.
    GTY563662Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  • The engine assembly with transaxle is very heavy. Be sure to follow the procedure described in the repair information, or the engine lifter may suddenly drop or the engine assembly with transaxle may fall off the engine lifter.
    GTY566510Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a An Object Exceeding Weight Limit of Engine Lifter
  • The hybrid vehicle transaxle assembly is very heavy. Be sure to follow the procedure described in the repair information, or the transmission jack may suddenly drop or a part may fall.
    GTY559497Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Object Exceeding Weight Limit of Transmission Jack
NOTE:
  • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

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

  • If the ECM has been struck or dropped, replace it.
  • Perform Vehicle Identification Number (VIN) registration when replacing the ECM.

    Refer to REGISTRATION [12/2019 - ]