Toyota Sienna Service Bulletins (2025)

44 manufacturer communications on file.

• August 20, 2026•Document ID: 11037202

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  T-SB-0110-20 Rev2

  Date Added:

  September 9, 2026

  Manufacturer:

  TOYOTA

  Summary

  OBSOLETE NOTICE August 20, 2026: This bulletin is now obsolete. Please see T-SB-0051-26.

  Associated Products (58)

  2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Highlander2025 Toyota Mirai2025 Toyota RAV42025 Toyota Sienna2024 Toyota Camry2024 Toyota Corolla2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota Highlander2024 Toyota Mirai2024 Toyota RAV42024 Toyota Sienna2024 Toyota Venza2023 Toyota Camry2023 Toyota Corolla2023 Toyota Corolla Cross2023 Toyota Crown+ 38 more
  Associated Documents

  • DownloadMC-11037202-0001.pdf↗
• August 20, 2026•Document ID: 11037201

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  T-SB-0051-26

  Date Added:

  September 9, 2026

  Manufacturer:

  TOYOTA

  Summary

  This bulletin includes basic procedures for performing a rescue charge at battery on high voltage (HV) Ni-MH and Li-ion batteries.

  Associated Products (49)

  2026 Toyota Corolla Cross2026 Toyota Crown2026 Toyota Mirai2026 Toyota Sienna2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Mirai2025 Toyota RAV42025 Toyota Sienna2024 Toyota Camry2024 Toyota Corolla Cross2024 Toyota Crown2024 Toyota Mirai2024 Toyota RAV42024 Toyota Sienna2024 Toyota Venza2023 Toyota Camry2023 Toyota Corolla Cross2023 Toyota Crown2023 Toyota Mirai+ 29 more
  Associated Documents

  • DownloadMC-11037201-0001.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 (376)

  2026 Toyota 4Runner2026 Toyota bZ2026 Toyota Camry2026 Toyota Corolla2026 Toyota Corolla Cross2026 Toyota Crown2026 Toyota Crown Signia2026 Toyota Grand Highlander2026 Toyota GR Corolla2026 Toyota Highlander2026 Toyota Land Cruiser2026 Toyota Mirai2026 Toyota Prius2026 Toyota RAV42026 Toyota Sequoia2026 Toyota Sienna2026 Toyota Supra2026 Toyota Tacoma2026 Toyota Tundra2026 Toyota Yaris+ 356 more
  Associated Documents

  • DownloadMC-11028712-0001.pdf↗
• December 2, 2025•Document ID: 11027555

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  T-TT-0795-25

  Date Added:

  January 9, 2026

  Manufacturer:

  TOYOTA

  Summary

  Some customers may experience a condition in which the 2021-2025 Sienna HV 2nd row FRAME SUB-ASSY, No.1 does not function even when the stow lever is pulled. Because the cable has come off from the bracket that holds it inside.

  Associated Products (5)

  2025 Toyota Sienna2024 Toyota Sienna2023 Toyota Sienna2022 Toyota Sienna2021 Toyota Sienna
  Associated Documents

  • DownloadMC-11027555-0001.pdf↗
• November 24, 2025•Document ID: 11026324

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  T-SB-0087-25

  Date Added:

  December 5, 2025

  Manufacturer:

  TOYOTA

  Summary

  Some 2024 – 2025 model year Sienna Hybrid and Sienna Hybrid MaaS Package vehicles may exhibit a condition in which the rear No. 1 seat assembly (for captain seat type) squeaks or rattles while driving. The condition(s) can occur on both the driver and passenger side seats of the vehicle. Application of noise reducing felt has been developed to improve and reduce these conditions.

  Associated Products (2)

  2025 Toyota Sienna2024 Toyota Sienna
  Associated Documents

  • DownloadMC-11026324-0001.pdf↗
• November 6, 2025•Document ID: 11026304

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  T-SB-0082-25

  Date Added:

  December 5, 2025

  Manufacturer:

  TOYOTA

  Summary

  Some 2021 – 2025 model year Sienna Hybrid vehicles may exhibit a sloshing or splashing noise from inside one or more door panels when driving, opening and/or closing a door, and/or braking. This condition may be caused by cavity wax, debris, or other materials that may block door drain holes and restrict water from draining properly.

  Associated Products (5)

  2025 Toyota Sienna2024 Toyota Sienna2023 Toyota Sienna2022 Toyota Sienna2021 Toyota Sienna
  Associated Documents

  • DownloadMC-11026304-0001.pdf↗
• July 24, 2025•Document ID: 11021728

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  T-SB-0035-25 Rev1

  Date Added:

  August 8, 2025

  Manufacturer:

  TOYOTA

  Summary

  Some 2025 model year Sienna Hybrid vehicles equipped with the advanced rear seat reminder system may exhibit one or both of the following conditions: •A “Rear Seat Reminder Malfunction – Visit Your Dealer” message on the Multi-information Display (MID). •Diagnostic Trouble Code (DTC) U117487 (Lost Communication with Cabin Occupant Recognition Sensor Missing) present in the main body ECU. The cabin object recognition sensor assembly logic has been modified to address these conditions.

  Associated Products (1)

  2025 Toyota Sienna
  Associated Documents

  • DownloadMC-11021728-0001.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 (204)

  2026 Toyota Crown2026 Toyota Yaris2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Camry2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Crown Signia2025 Toyota Grand Highlander2025 Toyota GR Corolla2025 Toyota Highlander2025 Toyota Land Cruiser2025 Toyota Mirai2025 Toyota Prius2025 Toyota RAV42025 Toyota Sienna2025 Toyota Tacoma2025 Toyota Tundra2025 Toyota Yaris+ 184 more
  Associated Documents

  • DownloadMC-11020657-0001.pdf↗
• April 9, 2025•Document ID: 11019336

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  T-SB-0035-25

  Date Added:

  June 6, 2025

  Manufacturer:

  TOYOTA

  Summary

  Some 2025 model year Sienna Hybrid vehicles equipped with the advanced rear seat reminder system may exhibit one or both of the following conditions: • A “Rear Seat Reminder Malfunction – Visit Your Dealer” message on the Multi-information Display (MID). • Diagnostic Trouble Code (DTC) U117487 (Lost Communication with Cabin Occupant Recognition Sensor Missing) present in the main body ECU. The cabin object recognition sensor assembly logic has been modified to address these conditions.

  Associated Products (1)

  2025 Toyota Sienna
  Associated Documents

  • DownloadMC-11019336-0001.pdf↗
• April 9, 2025•Document ID: 11018333

  Service Bulletin/Repair Instructions
  STRUCTURE:BODY

  Mfr Comm. #:

  T-SB-0035-25

  Date Added:

  May 15, 2025

  Manufacturer:

  TOYOTA

  Summary

  Some 2025 model year Sienna Hybrid vehicles equipped with the advanced rear seat reminder system may exhibit one or both of the following conditions: • A “Rear Seat Reminder Malfunction – Visit Your Dealer” message on the Multi-information Display (MID). • Diagnostic Trouble Code (DTC) U117487 (Lost Communication with Cabin Occupant Recognition Sensor Missing) present in the main body ECU. The cabin object recognition sensor assembly logic has been modified to address these conditions.

  Associated Products (1)

  2025 Toyota Sienna
  Associated Documents

  • DownloadMC-11018333-0001.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 (45)

  2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Camry2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Crown Signia2025 Toyota Grand Highlander2025 Toyota GR Corolla2025 Toyota Highlander2025 Toyota Land Cruiser2025 Toyota Mirai2025 Toyota Prius2025 Toyota RAV42025 Toyota Sequoia2025 Toyota Sienna2025 Toyota Tacoma2025 Toyota Tundra2024 Toyota bZ4X2024 Toyota Corolla+ 25 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 (45)

  2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Camry2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Crown Signia2025 Toyota Grand Highlander2025 Toyota GR Corolla2025 Toyota Highlander2025 Toyota Land Cruiser2025 Toyota Mirai2025 Toyota Prius2025 Toyota RAV42025 Toyota Sequoia2025 Toyota Sienna2025 Toyota Tacoma2025 Toyota Tundra2024 Toyota bZ4X2024 Toyota Corolla+ 25 more
  Associated Documents

  • DownloadMC-11018328-0001.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 (56)

  2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Crown Signia2025 Toyota Grand Highlander2025 Toyota GR Corolla2025 Toyota Highlander2025 Toyota Land Cruiser2025 Toyota Mirai2025 Toyota Prius2025 Toyota RAV42025 Toyota Sequoia2025 Toyota Sienna2025 Toyota Tacoma2025 Toyota Tundra2025 Toyota Venza2024 Toyota bZ4X2024 Toyota Corolla+ 36 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 (73)

  2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Camry2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Grand Highlander2025 Toyota GR Corolla2025 Toyota Highlander2025 Toyota Mirai2025 Toyota Prius2025 Toyota RAV42025 Toyota Sequoia2025 Toyota Sienna2025 Toyota Tacoma2025 Toyota Tundra2025 Toyota Venza2024 Toyota 4Runner2024 Toyota bZ4X2024 Toyota Camry+ 53 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 (56)

  2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Crown Signia2025 Toyota Grand Highlander2025 Toyota GR Corolla2025 Toyota Highlander2025 Toyota Land Cruiser2025 Toyota Mirai2025 Toyota Prius2025 Toyota RAV42025 Toyota Sequoia2025 Toyota Sienna2025 Toyota Tacoma2025 Toyota Tundra2025 Toyota Venza2024 Toyota bZ4X2024 Toyota Corolla+ 36 more
  Associated Documents

  • DownloadMC-11015496-0001.pdf↗
• February 10, 2025•Document ID: 11015495

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  T-SB-0013-24 Rev1

  Date Added:

  March 11, 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 (73)

  2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Camry2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Grand Highlander2025 Toyota GR Corolla2025 Toyota Highlander2025 Toyota Mirai2025 Toyota Prius2025 Toyota RAV42025 Toyota Sequoia2025 Toyota Sienna2025 Toyota Tacoma2025 Toyota Tundra2025 Toyota Venza2024 Toyota 4Runner2024 Toyota bZ4X2024 Toyota Camry+ 53 more
  Associated Documents

  • DownloadMC-11015495-0001.pdf↗
• January 28, 2025•Document ID: 11014205

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  T-TT-0771-25

  Date Added:

  February 12, 2025

  Manufacturer:

  TOYOTA

  Summary

  Some 2021-2025 MY Highlander HV, Sienna HV, RAV4, and RAV4 HV, may exhibit an oil leak from the area where the camshaft cover, camshaft housing, and the timing chain covers meet. This is typically seen on the exhaust side of the engine.

  Associated Products (15)

  2025 Toyota Highlander2025 Toyota RAV42025 Toyota Sienna2024 Toyota Highlander2024 Toyota RAV42024 Toyota Sienna2023 Toyota Highlander2023 Toyota RAV42023 Toyota Sienna2022 Toyota Highlander2022 Toyota RAV42022 Toyota Sienna2021 Toyota Highlander2021 Toyota RAV42021 Toyota Sienna
  Associated Documents

  • DownloadMC-11014205-0001.pdf↗
• January 24, 2025•Document ID: 11014200

  Service Bulletin/Repair Instructions
  UNKNOWN OR OTHER

  Mfr Comm. #:

  T-SB-0013-25

  Date Added:

  February 12, 2025

  Manufacturer:

  TOYOTA

  Summary

  Long-term or off-site storage requires special care to maintain vehicle condition. The following guidelines should be performed to minimize vehicle component/part degradation due to extended vehicle storage conditions. Long-term storage can affect a vehicle’s systems and components. Any problems that are found should be corrected immediately.

  Associated Products (19)

  2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Camry2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Crown Signia2025 Toyota Grand Highlander2025 Toyota GR Corolla2025 Toyota Highlander2025 Toyota Land Cruiser2025 Toyota Mirai2025 Toyota Prius2025 Toyota RAV42025 Toyota Sequoia2025 Toyota Sienna2025 Toyota Supra2025 Toyota Tacoma2025 Toyota Tundra
  Associated Documents

  • DownloadMC-11014200-0001.pdf↗
• January 23, 2025•Document ID: 11014190

  Service Bulletin/Repair Instructions
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  T-SB-0011-25

  Date Added:

  February 12, 2025

  Manufacturer:

  TOYOTA

  Summary

  When certain vehicle ECUs are replaced, the ECU Security Key must be written in order for that ECU to communicate on the vehicle network. The GTS+ Software Health Check Results screen has been enhanced to help identify if a replacement ECU requires an ECU Security Key.

  Associated Products (60)

  2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Camry2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Crown Signia2025 Toyota Grand Highlander2025 Toyota GR Corolla2025 Toyota Highlander2025 Toyota Land Cruiser2025 Toyota Mirai2025 Toyota Prius2025 Toyota RAV42025 Toyota Sequoia2025 Toyota Sienna2025 Toyota Tacoma2025 Toyota Tundra2025 Toyota Venza2025 Toyota Yaris+ 40 more
  Associated Documents

  • DownloadMC-11014190-0001.pdf↗
• December 21, 2024•Document ID: 10248827

  Service Bulletin/Repair Instructions
  WHEELS

  Mfr Comm. #:

  T-SB-0104-23

  Date Added:

  January 16, 2024

  Manufacturer:

  TOYOTA

  Summary

  TSB: During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. If the wheels are replaced or refinished before vehicle delivery, it is important that the tires remain on the vehicle in the same location and in the same direction of rotation. Refer to the Tire Positioning Procedure in this bulletin to ensure that the original tires stay in the same location on the vehicle.

  Associated Products (18)

  2025 Toyota 4Runner2025 Toyota bZ4X2025 Toyota Camry2025 Toyota Corolla2025 Toyota Corolla Cross2025 Toyota Crown2025 Toyota Grand Highlander2025 Toyota GR Corolla2025 Toyota Highlander2025 Toyota Land Cruiser2025 Toyota Mirai2025 Toyota Prius2025 Toyota RAV42025 Toyota Sequoia2025 Toyota Sienna2025 Toyota Supra2025 Toyota Tacoma2025 Toyota Tundra
  Associated Documents

  • DownloadMC-10248827-0001.pdf↗