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Caution / Notice / Hint

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

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 Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes) Stop and start system Refer to PRECAUTION [11/2018 - 12/2021]
Perform steering sensor zero point calibration Lane control system Refer to INITIALIZATION [11/2018 - 12/2021]
Parking support brake system (for Gasoline model)*
Pre-collision system
Memorize steering angle neutral point Parking assist monitor system Refer to INITIALIZATION [11/2018 - 10/2022]
Panoramic view monitor system (for Gasoline model) Refer to INITIALIZATION [11/2018 - 10/2022]
Reset back door close position Power back door system (for Gasoline model) Refer to INITIALIZATION [11/2018 - 10/2023]
Back door lock initialization Power door lock control system Refer to INITIALIZATION [11/2018 - ]
Airbag ECU assembly
  • Perform reset memory
  • Perform acceleration sensor zero point calibration and store system information memorization
  • VSC is disabled or malfunctions
  • DTCs are output
  • Slip indicator light illuminates
  • ABS warning light illuminates
 Refer to UTILITY [11/2018 - ]
for GF1A: 
  1. Reset memory
 Dynamic torque control 4WD/AWD system Refer to CALIBRATION [11/2018 - ]
for GF2A: 
  1. ECU data initialization
 Refer to CALIBRATION [11/2018 - ]

*: When performing learning using the Techstream.

NOTE:

After the ignition switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) auxiliary battery terminal.

WAITING TIME BEFORE DISCONNECTING CABLE FROM NEGATIVE (-) AUXILIARY BATTERY TERMINAL

System Name See Procedure
Vehicle enrolled in Toyota Entune system or safety connect system 6 minutes
Vehicle not enrolled in Toyota Entune system and safety connect system 1 minute
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 [11/2018 - 12/2021]
Pre-collision system
Memorize steering angle neutral point Parking assist monitor system Refer to INITIALIZATION [11/2018 - 10/2022]
Panoramic view monitor system (for HV model) Refer to INITIALIZATION [11/2018 - 10/2022]
Reset back door close position Power back door system (for HV model) Refer to INITIALIZATION [11/2018 - 10/2023]
Back door lock initialization Power door lock control system Refer to INITIALIZATION [11/2018 - ]
Airbag ECU assembly
  • Clear zero point calibration data
  • 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 UTILITY [11/2018 - 02/2019]
NOTE:

After the ignition switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) auxiliary battery terminal.

WAITING TIME BEFORE DISCONNECTING CABLE FROM NEGATIVE (-) AUXILIARY BATTERY TERMINAL

System Name See Procedure
Vehicle enrolled in Toyota Entune system or safety connect system 6 minutes
Vehicle not enrolled in Toyota Entune system and safety connect system 1 minute
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