Crash-validation testing revealed that second-row seat backs in certain Toyota Sienna Hybrid minivans can disengage from their locked position during a frontal collision. Toyota is now recalling 228,367 of them.
The campaign covers seven-passenger 2022-2026 Sienna Hybrids built between September 2021 and July 2025. That is nearly five model years of production before the problem surfaced through Toyota’s own testing, not from field complaints or reported injuries.
A seat back that folds forward under crash forces defeats its entire purpose. It cannot restrain the occupant. The injury risk is self-evident, and the scope of the recall suggests Toyota found the defect to be systemic across the seven-passenger configuration rather than limited to a narrow production window.
The fix splits into two tracks. The vast majority of affected vans will receive a software update to the supplemental restraint system’s electronic control unit. Toyota apparently believes recalibrating the airbag ECU can compensate for the mechanical weakness in the seat-back locking mechanism, though the recall documents do not spell out exactly how software addresses what sounds like a hardware problem.
Roughly 200 vehicles from 2022-2025 equipped with Toyota’s Mobility as a Service package get treated differently. Those vans will have both second-row seat backs physically replaced with parts featuring an updated recliner mechanism. That distinction raises a question: if the seat-back recliner design is the root cause, why does the bulk of the fleet get a software patch instead of new hardware?
Toyota has not answered that publicly. The NHTSA filing lists the software update as the primary remedy without elaborating on the engineering logic behind it.
Either repair costs owners nothing, but nobody should expect a quick turnaround. Notification letters are not scheduled to hit mailboxes until December 7, 2026, more than a year from now. Dealers will not have parts or final scheduling details until then.
Owners who want to check sooner can call Toyota at 1-800-331-4331 or search their VIN on the NHTSA recall database. Only the seven-passenger layout is affected. Other Sienna configurations are not part of this campaign.
Toyota has been busy with seat and restraint related recalls across its lineup recently. Separate Highlander campaigns covering large numbers of SUVs dealt with different components and different timelines, but the pattern of seating-system problems across multiple nameplates is hard to ignore.
The Sienna Hybrid is the only minivan Toyota sells in the United States, and it has been exclusively hybrid since the 2021 redesign. It competes in a segment that has shrunk to just a handful of players, where family buyers rely on second-row and third-row seating safety as a baseline expectation. A seat back that cannot stay locked during a frontal impact cuts against the minivan’s core promise.
With more than 228,000 vehicles in the field and letters still over a year away, a lot of families will be driving affected Siennas for a long time before a dealer ever touches them. Toyota’s internal campaign numbers, 26TB24 and 26TA24, are now on the NHTSA’s books, but the clock on actual repairs has barely started ticking.
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