Sienna AWD

63 service bulletins filed with NHTSA for this model year

• May 14, 2026ELECTRICAL SYSTEM22TE09

  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 veh

• Feb 27, 2026ENGINET-SB-0104-21 Rev2

  OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete.

• Jan 30, 2026ELECTRICAL SYSTEMT-SB-0106-22 Rev2

  OBSOLETE NOTICE January 30, 2026: This bulletin is now obsolete. Please see T-SB-0001-26.

• Jan 28, 2026ELECTRICAL SYSTEMT-SB-0001-26

  Some 2018 – 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software.

• Jan 7, 2026UNKNOWN OR OTHERT-SB-0055-24 Rev2

  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 a

• Dec 2, 2025STRUCTURE:BODYT-TT-0795-25

  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.

• Nov 24, 2025STRUCTURE:BODYT-SB-0087-25

  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.

• Nov 6, 2025STRUCTURE:BODYT-SB-0082-25

  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.

• and 55 more

Source: NHTSA manufacturer communications (technical service bulletins).