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Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 41 (Engine Mechanical (Service Information) [A25A-FXS] (1 Of 2)) >> Engine Assembly & Engine Under Cover >> Removal [04/2018 - 08/2021] >> Caution/Notice/Hint

Removal [04/2018 - 08/2021]: 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 engine assembly removal/installation are shown below.

NECESSARY PROCEDURE 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 departure alert system (w/ Steering Control) Refer to INITIALIZATION [04/2018 - 08/2021]
Pre-collision system
Intelligent clearance sonar system*
Lighting System (for HV Model with Cornering Light)
Memorize steering angle neutral point Parking assist monitor system Refer to INITIALIZATION [04/2018 - ]
Panoramic view monitor system Refer to INITIALIZATION [04/2018 - ]
Replacement of ECM Perform Vehicle Identification Number (VIN) registration MIL illuminates Refer to REGISTRATION [04/2018 - ]
  • Replacement of engine assembly
  • Gas leak from exhaust system is repaired
  • Replacement of engine coolant temperature sensor
Inspection After Repair
  • Poor idle, etc.
  • Engine start function, etc.
Refer to INITIALIZATION [04/2018 - 08/2019] , or refer to INITIALIZATION [08/2019 - 08/2021]
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
Refer to UTILITY [04/2018 - 08/2020] , or refer to UTILITY [08/2020 - ]
Replacement of hybrid vehicle transaxle assembly
  • Resolver learning
  • Initialize resolver
Front wheel alignment adjustment
  1. Clear zero point calibration data.
  2. Perform yaw rate and acceleration sensor zero point calibration.
  • DTCs are stored
  • ABS warning light illuminates
  • Brake warning light/yellow (minor malfunction) illuminates
  • Slip indicator light illuminates
  • VSC disabled or malfunctions
Refer to CALIBRATION [04/2018 - 08/2021]
  • Suspension, tires, etc.*1
  • Replacement of front bumper assembly
  • Measurement of ultrasonic sensor detection angle
  • Ultrasonic sensor detection angle registration
  • Intelligent clearance sonar system
  • Intuitive parking assist system
Refer to CALIBRATION [04/2018 - ]
Suspension, tires, etc.*1 Rear television camera assembly optical axis (Back camera position setting) Parking assist monitor system Refer to INITIALIZATION [04/2018 - ] for Initialization
Refer to CALIBRATION [04/2018 - ] for Calibration
Replacement of front bumper assembly Front television camera view adjustment Panoramic view monitor system Refer to INITIALIZATION [04/2018 - ] for Initialization
Refer to CALIBRATION [04/2018 - ] for Calibration
Suspension, tires, etc.*1
  • Parking assist ECU initialization
  • Adjust steering angle
  • Television camera assembly optical axis adjustment (Back camera position setting)
  • Replacement of headlight ECU sub-assembly LH
  • Replacement of headlight assembly LH
Synchronize the vehicle information Lighting system (for HV Model with Cornering Light) Refer to INITIALIZATION [04/2018 - ]
  1. *: When performing learning using the Techstream.

    Refer to CALIBRATION [04/2018 - ]

  2. *1: If the vehicle height has changed due to suspension or tire replacement
WARNING:
  • The engine assembly with transaxle is very heavy. Be sure to follow the procedure described in the service 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
  • 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