Toyota Crown Service Bulletins (2023)

136 manufacturer communications on file.

• May 14, 2026•Document ID: 11033412

  Warranty Program/Extension
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  22TE09

  Date Added:

  June 4, 2026

  Manufacturer:

  TOYOTA

  Summary

  Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota’s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we at Toyota care about the customers’ ownership experience. Toyota is providing extended coverage under this Customer Support Program for repairs related to excessive corrosion to the wire harness connections at the Rear Motor Generator. Excessive corrosion can cause AM Radio Static during certain drive cycles, or the vehicle may not start.

  Associated Products (2)

  2024 Toyota Crown2023 Toyota Crown
  Associated Documents

  • DownloadMC-11033412-0001.pdf↗
• February 27, 2026•Document ID: 11029896

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  T-SB-0104-21 Rev2

  Date Added:

  March 7, 2026

  Manufacturer:

  TOYOTA

  Summary

  OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete.

  Associated Products (21)

  2024 Toyota Camry2024 Toyota Corolla2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota Prius2024 Toyota RAV42023 Toyota Camry2023 Toyota Corolla2023 Toyota Corolla Cross2023 Toyota Crown2023 Toyota Prius2023 Toyota RAV42022 Toyota Avalon2022 Toyota Camry2022 Toyota Corolla2022 Toyota Corolla Cross2022 Toyota RAV42021 Toyota Avalon2021 Toyota Camry2021 Toyota Corolla+ 1 more
  Associated Documents

  • DownloadMC-11029896-0001.pdf↗
• January 7, 2026•Document ID: 11028712

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  T-SB-0055-24 Rev2

  Date Added:

  February 11, 2026

  Manufacturer:

  TOYOTA

  Summary

  Some 2005 – 2026 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The purpose of this Service Bulletin is to provide general guidelines and procedures for odor remediation. This Service Bulletin provides a guide on how to prepare and treat the interior of the vehicle for odor remediation. Refer to the applicable model and model year Repair Manual and the EPA (Environmental Protection Agency) website for the most up-to-date safety and precautionary guidelines.

  Associated Products (92)

  2026 Toyota 4Runner2026 Toyota bZ2026 Toyota Corolla2026 Toyota Corolla Cross2026 Toyota Crown2026 Toyota Crown Signia2026 Toyota GR Corolla2026 Toyota Grand Highlander2026 Toyota Highlander2026 Toyota Mirai2026 Toyota Prius2026 Toyota Supra2026 Toyota Tacoma2026 Toyota Tundra2026 Toyota Yaris2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown+ 72 more
  Associated Documents

  • DownloadMC-11028712-0001.pdf↗
• January 6, 2026•Document ID: 11028711

  Warranty Program/Extension
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  22TE09

  Date Added:

  February 11, 2026

  Manufacturer:

  TOYOTA

  Summary

  Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota’s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we at Toyota care about the customers’ ownership experience. Toyota is providing extended coverage under this Customer Support Program for repairs related to excessive corrosion to the wire harness connections at the Rear Motor Generator. Excessive corrosion can cause AM Radio Static during certain drive cycles, or the vehicle may not start.

  Associated Products (2)

  2024 Toyota Crown2023 Toyota Crown
  Associated Documents

  • DownloadMC-11028711-0001.pdf↗
• September 25, 2025•Document ID: 11024098

  Service Campaign
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  25TD01

  Date Added:

  October 8, 2025

  Manufacturer:

  TOYOTA

  Summary

  The subject vehicles are equipped with a rear motor unit and an HV Floor Under Wire that provide high voltage to operate the motor. Mud, water, or road salt could potentially enter the HV Floor Underwire connector housing and could cause corrosion over time. Excessive corrosion could cause AM Radio Static during certain driving cycles, or the vehicle may not start.

  Associated Products (2)

  2024 Toyota Crown2023 Toyota Crown
  Associated Documents

  • DownloadMC-11024098-0001.pdf↗
• September 24, 2025•Document ID: 11024097

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  25TD01

  Date Added:

  October 8, 2025

  Manufacturer:

  TOYOTA

  Summary

  TECHNICAL INSTRUCTIONS FOR 25TD01 REAR TRACTION MOTOR CABLE CORROSION CERTAIN 2019 - 2024 RAV4 HV (AWD), 2021- 2024 RAV4 PRIME, 2020-2024 HIGHLANDER HV (AWD), 2021-2024 VENZA HV, 2023-2024 CROWN HV VEHICLES

  Associated Products (2)

  2024 Toyota Crown2023 Toyota Crown
  Associated Documents

  • DownloadMC-11024097-0001.pdf↗
• September 24, 2025•Document ID: 11024096

  Service Campaign
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  25TD01

  Date Added:

  October 8, 2025

  Manufacturer:

  TOYOTA

  Summary

  The subject vehicles are equipped with a rear motor unit and an HV Floor Under Wire that provide high voltage to operate the motor. Mud, water, or road salt could potentially enter the HV Floor Underwire connector housing and could cause corrosion over time. Excessive corrosion could cause AM Radio Static during certain driving cycles, or the vehicle may not start.

  Associated Products (2)

  2024 Toyota Crown2023 Toyota Crown
  Associated Documents

  • DownloadMC-11024096-0001.pdf↗
• September 18, 2025•Document ID: 11024090

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  25TD01

  Date Added:

  October 8, 2025

  Manufacturer:

  TOYOTA

  Summary

  TECHNICAL INSTRUCTIONS FOR 25TD01 REAR TRACTION MOTOR CABLE CORROSION CERTAIN 2019 - 2024 RAV4 HV (AWD) 2021- 2024 RAV4 PRIME 2020-2024 HIGHLANDER HV (AWD) 2021-2024 VENZA HV 2023-2024 CROWN HV

  Associated Products (2)

  2024 Toyota Crown2023 Toyota Crown
  Associated Documents

  • DownloadMC-11024090-0001.pdf↗
• September 18, 2025•Document ID: 11024089

  Service Campaign
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  25TD01

  Date Added:

  October 8, 2025

  Manufacturer:

  TOYOTA

  Summary

  The subject vehicles are equipped with a rear motor unit and an HV Floor Under Wire that provide high voltage to operate the motor. Mud, water, or road salt could potentially enter the HV Floor Underwire connector housing and could cause corrosion over time. Excessive corrosion could cause AM Radio Static during certain driving cycles, or the vehicle may not start.

  Associated Products (2)

  2024 Toyota Crown2023 Toyota Crown
  Associated Documents

  • DownloadMC-11024089-0001.pdf↗
• September 17, 2025•Document ID: 11024083

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  22TE09

  Date Added:

  October 8, 2025

  Manufacturer:

  TOYOTA

  Summary

  TECHNICAL INSTRUCTIONS FOR CUSTOMER SUPPORT PROGRAM 22TE09 HV FLOOR UNDER WIRE HARNESS AND REAR TRACTION MOTOR CABLE CORROSION CERTAIN 2023 - 2024 MODEL YEAR CROWN

  Associated Products (2)

  2024 Toyota Crown2023 Toyota Crown
  Associated Documents

  • DownloadMC-11024083-0001.pdf↗
• September 17, 2025•Document ID: 11024080

  Service Campaign
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  22TE09

  Date Added:

  October 8, 2025

  Manufacturer:

  TOYOTA

  Summary

  Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota’s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we at Toyota care about the customers’ ownership experience. Toyota is providing extended coverage under this Customer Support Program for repairs related to excessive corrosion to the wire harness connections at the Rear Motor Generator. Excessive corrosion can cause AM Radio Static during certain drive cycles, or the vehicle may not start.

  Associated Products (10)

  2024 Toyota Crown2024 Toyota Highlander2024 Toyota RAV42023 Toyota Crown2023 Toyota Highlander2023 Toyota RAV42022 Toyota Highlander2022 Toyota RAV42021 Toyota Highlander2021 Toyota RAV4
  Associated Documents

  • DownloadMC-11024080-0001.pdf↗
• June 13, 2025•Document ID: 11020657

  Service Campaign
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  T-SB-0058-23 Rev1

  Date Added:

  July 10, 2025

  Manufacturer:

  TOYOTA

  Summary

  The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service Bulletin aid in locating, inspecting, and repairing refrigerant leaks.

  Associated Products (67)

  2026 Toyota Crown2026 Toyota Yaris2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Camry2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Crown Signia2025 Toyota GR Corolla2025 Toyota Grand Highlander2025 Toyota Highlander2025 Toyota Mirai2025 Toyota Prius2025 Toyota RAV42025 Toyota Tacoma2025 Toyota Tundra2025 Toyota Yaris2024 Toyota 4Runner2024 Toyota bZ4X+ 47 more
  Associated Documents

  • DownloadMC-11020657-0001.pdf↗
• April 2, 2025•Document ID: 11019331

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  T-TT-0779-25

  Date Added:

  June 6, 2025

  Manufacturer:

  TOYOTA

  Summary

  To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested by FTS and/or FPE.

  Associated Products (37)

  2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Crown Signia2025 Toyota GR Corolla2025 Toyota Grand Highlander2025 Toyota Highlander2025 Toyota Mirai2025 Toyota Prius2025 Toyota RAV42025 Toyota Tacoma2025 Toyota Tundra2024 Toyota bZ4X2024 Toyota Corolla2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota GR Corolla2024 Toyota Grand Highlander+ 17 more
  Associated Documents

  • DownloadMC-11019331-0001.pdf↗
• April 2, 2025•Document ID: 11018328

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  T-TT-0779-25

  Date Added:

  May 15, 2025

  Manufacturer:

  TOYOTA

  Summary

  To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested by FTS and/or FPE.

  Associated Products (37)

  2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Crown Signia2025 Toyota GR Corolla2025 Toyota Grand Highlander2025 Toyota Highlander2025 Toyota Mirai2025 Toyota Prius2025 Toyota RAV42025 Toyota Tacoma2025 Toyota Tundra2024 Toyota bZ4X2024 Toyota Corolla2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota GR Corolla2024 Toyota Grand Highlander+ 17 more
  Associated Documents

  • DownloadMC-11018328-0001.pdf↗
• February 24, 2025•Document ID: 11016797

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  T-SB-0028-25

  Date Added:

  April 8, 2025

  Manufacturer:

  TOYOTA

  Summary

  Some 2023 – 2025 Crown and 2024 – 2025 Grand Highlander Hybrid vehicles equipped with a Hybrid Transmission Assembly HPC60 may exhibit a shudder sensation when the vehicle is at a complete stop, the State of Charge (SOC) of the HV Battery is greater than 76%, and the transmission is in the Drive position with the brakes applied.

  Associated Products (3)

  2025 Toyota Crown2024 Toyota Crown2023 Toyota Crown
  Associated Documents

  • DownloadMC-11016797-0001.pdf↗
• February 24, 2025•Document ID: 11015511

  Service Bulletin/Repair Instructions
  POWER TRAIN

  Mfr Comm. #:

  T-SB-0028-25

  Date Added:

  March 11, 2025

  Manufacturer:

  TOYOTA

  Summary

  Some 2023 – 2025 Crown and 2024 – 2025 Grand Highlander Hybrid vehicles equipped with a Hybrid Transmission Assembly HPC60 may exhibit a shudder sensation when the vehicle is at a complete stop, the State of Charge (SOC) of the HV Battery is greater than 76%, and the transmission is in the Drive position with the brakes applied.

  Associated Products (3)

  2025 Toyota Crown2024 Toyota Crown2023 Toyota Crown
  Associated Documents

  • DownloadMC-11015511-0001.pdf↗
• February 12, 2025•Document ID: 11015882

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  T-SB-0107-20 Rev2

  Date Added:

  March 25, 2025

  Manufacturer:

  TOYOTA

  Summary

  OBSOLETE NOTICE February 11, 2025: This bulletin is now obsolete. Please see T-SB-0021-25.

  Associated Products (23)

  2024 Toyota bZ4X2024 Toyota Corolla2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota GR Corolla2024 Toyota Grand Highlander2024 Toyota Highlander2024 Toyota Mirai2024 Toyota Prius2024 Toyota Tundra2023 Toyota bZ4X2023 Toyota Corolla2023 Toyota Corolla Cross2023 Toyota Crown2023 Toyota GR Corolla2023 Toyota Mirai2023 Toyota Prius2023 Toyota Tundra2022 Toyota Corolla Cross2022 Toyota Mirai+ 3 more
  Associated Documents

  • DownloadMC-11015882-0001.pdf↗
• February 10, 2025•Document ID: 11016782

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  T-SB-0021-25

  Date Added:

  April 8, 2025

  Manufacturer:

  TOYOTA

  Summary

  Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Global Techstream+ (GTS+) ECU flash reprogramming procedures and outlines use of the Technical Information System (TIS) and the Calibration Update Wizard+ (CUW+). To ensure the correct ECU software is installed, ECUs will require a Security Signature before the ECU will initialize the flash reprogramming sequence. This bulletin also details the process for acquiring a Security Signature from TIS during the GTS+ ECU flash reprogramming process.

  Associated Products (36)

  2025 Toyota bZ4X2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Crown Signia2025 Toyota GR Corolla2025 Toyota Grand Highlander2025 Toyota Highlander2025 Toyota Mirai2025 Toyota Prius2025 Toyota Tacoma2025 Toyota Tundra2024 Toyota bZ4X2024 Toyota Corolla2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota GR Corolla2024 Toyota Grand Highlander2024 Toyota Highlander2024 Toyota Mirai+ 16 more
  Associated Documents

  • DownloadMC-11016782-0001.pdf↗
• February 10, 2025•Document ID: 11016781

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  T-SB-0013-24 Rev1

  Date Added:

  April 8, 2025

  Manufacturer:

  TOYOTA

  Summary

  The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased and can never be reused. Another feature, Add/Remove Key, is also available. Once a key is removed, it can never be reused.

  Associated Products (54)

  2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Camry2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota GR Corolla2025 Toyota Grand Highlander2025 Toyota Highlander2025 Toyota Mirai2025 Toyota Prius2025 Toyota RAV42025 Toyota Tacoma2025 Toyota Tundra2024 Toyota 4Runner2024 Toyota bZ4X2024 Toyota Camry2024 Toyota Corolla2024 Toyota Corolla Cross2024 Toyota Crown+ 34 more
  Associated Documents

  • DownloadMC-11016781-0001.pdf↗
• February 10, 2025•Document ID: 11015496

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  T-SB-0021-25

  Date Added:

  March 11, 2025

  Manufacturer:

  TOYOTA

  Summary

  Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Global Techstream+ (GTS+) ECU flash reprogramming procedures and outlines use of the Technical Information System (TIS) and the Calibration Update Wizard+ (CUW+). To ensure the correct ECU software is installed, ECUs will require a Security Signature before the ECU will initialize the flash reprogramming sequence. This bulletin also details the process for acquiring a Security Signature from TIS during the GTS+ ECU flash reprogramming process.

  Associated Products (36)

  2025 Toyota bZ4X2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Crown Signia2025 Toyota GR Corolla2025 Toyota Grand Highlander2025 Toyota Highlander2025 Toyota Mirai2025 Toyota Prius2025 Toyota Tacoma2025 Toyota Tundra2024 Toyota bZ4X2024 Toyota Corolla2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota GR Corolla2024 Toyota Grand Highlander2024 Toyota Highlander2024 Toyota Mirai+ 16 more
  Associated Documents

  • DownloadMC-11015496-0001.pdf↗