DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Theft Deterrent System - Service Information >> Certification Ecu >> Removal [12/2019 - 11/2023] >> 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 certification ECU (smart key ECU assembly) removal/installation are shown below.

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

Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function When Necessary Procedures are not Performed Link
Certification ECU (smart key ECU assembly) Code registration
  • Wireless Door Lock Control System
  • Smart Key System (for Entry function)
  • Smart Key System (for start function, HV model)
  • Hybrid control system cannot be started
  • Telematics System
Refer to REGISTRATION [12/2019 - 10/2021] , or refer to REGISTRATION [10/2021 - 11/2023]
NECESSARY PROCEDURE AFTER PARTS REMOVED/INSTALLED/REPLACED (FOR GASOLINE MODEL)

Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function When Necessary Procedures are not Performed Link
Certification ECU (smart key ECU assembly) Code registration
  • Wireless Door Lock Control System
  • Smart Key System (for Entry function)
  • Smart Key System (for start function, HV model)
  • Hybrid control system cannot be started
  • Telematics System
Refer to REGISTRATION [12/2019 - 10/2021] , or refer to REGISTRATION [10/2021 - 10/2022] , or refer to REGISTRATION [10/2022 - 11/2023]