Toyota is recalling 228,367 Sienna Hybrid minivans in the United States because the second-row seat backs may fail to stay secured in a crash. The affected vehicles are 2022 through 2026 seven-passenger Sienna Hybrids, and the fix for most of them is a free software update rather than new hardware.
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The defect matters because the second row is where many families put children. A seat back that lets go in a collision stops doing its job at the moment it is needed, and the federal record says plainly what follows from that.
The seat back that may not stay secured
Toyota Motor Engineering & Manufacturing reported the problem to the National Highway Traffic Safety Administration on October 20, 2026, and the agency logged it as campaign 26V690000. The same filing appears in the agency’s toyota.com/recall, and NHTSA keeps its own at nhtsa.gov/recalls.
The software fix and the replacement seat backs
For most owners the remedy is free. According to the NHTSA record, dealers will update the software in the supplemental restraint system electronic control unit, the module that also governs airbags and seat belt pretensioners. The record does not spell out the technical link between that module and the seat-back lock, and Toyota’s filing text as published does not elaborate on it.
A smaller group gets more. Vehicles equipped with Toyota’s Mobility as a Service package, built for fleet and ride-hail use, will have both second-row seat backs replaced in addition to the software update. The filing does not say why those vehicles get the extra repair, and it does not describe how many of the 228,367 vans carry the package.
When owners will hear from Toyota
NHTSA’s subject line for the filing is “Seat Back May Unlatch During Crash,” a plainer description than the formal defect text and the one most likely to appear on a dealer’s work order.
Notification letters are expected to be mailed on December 7, 2026. Owners who want to act sooner do not have to wait for the mail. Toyota’s customer service line, listed in the record as 1-800-331-4331, can confirm whether a specific van is included, and a dealer can usually schedule the update once parts and software are released.
Because the repair is a software flash, the visit is typically short compared with a hardware recall. Still, the date to watch is the letter date, since that is when Toyota formally begins the owner-notification clock. The company’s model page for the Sienna remains the starting point for buyers checking a used van.
Owners who never receive a letter, for instance after buying a used van, are not excluded. The VIN lookups work regardless of mailing lists, and a van that shows an open recall can be taken to a dealer at any time once the remedy is available.
For a family weighing a used Sienna, the practical step is the same: run the VIN before signing, and ask the seller whether the update has been completed.
Until the update is done, the federal record offers no interim workaround and does not say whether the seat backs have unlatched in real crashes. What it does fix, in writing, is the count: 228,367 minivans, one defect, and a December 7 mailing date.
This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.
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