Toyota Sienna Seat Rail Class Action Lawsuit, Were You Left With an Unusable Minivan?

Toyota is facing a class action lawsuit filed in the U.S. District Court for the District of California alleging a recall for defective second-row seat rails in 2025 Sienna minivans has dragged on far too long, leaving families without a functional vehicle. Toyota issued the recall acknowledging the defect but has yet to repair any affected vehicles, according to the plaintiffs. The recall was issued in October 2025. As of the lawsuit’s April 2026 filing date, not a single second-row seat rail had been replaced. If you own a 2025 Toyota Sienna Hybrid, here is what is happening and what you can do right now.

Quick Facts — Toyota Sienna Seat Rail Class Action

Field	Detail
Lawsuit Filed	April 1, 2026
Defendant	Toyota Motor Sales, U.S.A., Inc.
Alleged Violation	Defective product — improperly welded second-row seat rails; failure to provide timely recall remedy
Who Is Affected	Owners and lessees of 2025 Toyota Sienna Hybrids built January 14 – July 24, 2025
Vehicles Recalled	Approximately 54,631 units (NHTSA Recall No. 25V668)
Current Court Stage	Litigation phase — no settlement reached
Court & Jurisdiction	U.S. District Court, Central District of California
Case Name & Number	Hamblin, et al. v. Toyota Motor Sales, U.S.A., Inc., Case No. 2:26-cv-03458
Lead Law Firm	Trinette G. Kent, Lemberg Law LLC
Next Hearing Date	TBD — case recently filed
Last Updated	May 5, 2026

What Happened with Toyota’s Sienna Seat Rail Recall? Hamblin, et al. v. Toyota Motor Sales, U.S.A., Inc., No. 2:26-cv-03458

During internal testing, Toyota discovered that the second-row seat rails in certain 2025 Sienna Hybrids were improperly welded by its supplier, Toyota Boshoku Kentucky Harrodsburg. An incorrect setting on the welding machine caused incomplete weld penetration in the seat rail assemblies.

Toyota issued NHTSA Recall No. 25V668 on October 7, 2025, covering 54,631 Sienna Hybrids built between January 14, 2025, and July 24, 2025. The recall states that the improperly welded seat rails could prevent the seats from adequately restraining occupants during a crash, significantly increasing the risk of injury.

Toyota marketed the 2025 Sienna as a family-friendly minivan with ample seating, but the defective seat rails made it unsafe to use the second row — the exact feature families paid for. Toyota told owners not to use the second-row seats, effectively rendering the minivan unusable for families who needed the full seating capacity. This is a defective product lawsuit at its core — owners paid nearly $60,000 for a vehicle they cannot safely use, and the company has not delivered a repair fix in over six months.

Are You Part of the Toyota Sienna Seat Rail Class Action?

Do you own a 2025 Toyota Sienna? Here is exactly how to know if this lawsuit includes you.

You may be part of this class if you:

• Purchased or leased a 2025 Toyota Sienna Hybrid in Ohio or South Carolina (current class definition — may expand)
• Your vehicle was produced between January 14, 2025, and July 24, 2025
• You received a recall notice from Toyota under Recall No. 25V668 (Toyota Recall Nos. 25TB12 / 25TA12)
• You have been unable to use your second-row seats due to Toyota’s instruction to avoid them until repairs are made

You are likely NOT included if:

• Your 2025 Sienna was built before January 14, 2025, or after July 24, 2025
• You own a 2024 or earlier Sienna — this defect is specific to the 2025 model year production window
• You purchased or leased the vehicle outside of Ohio or South Carolina (as of filing — this may change as the case progresses)

The class action was filed by South Carolina plaintiff Adam Hamblin and Ohio plaintiff Juliet Kelsten, and is currently limited to Ohio and South Carolina purchasers and lessees. Courts often expand class definitions as litigation develops — owners in other states should monitor this case closely.

You can check whether your specific VIN is included in the recall by entering your 17-character VIN at Toyota’s official website or at nhtsa.gov.

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What Are Toyota Sienna Plaintiffs Seeking?

The plaintiffs argue Toyota’s failure to provide a timely fix left many owners without suitable transportation despite owning a vehicle that cost nearly $60,000. This is not a minor inconvenience claim — families with young children in car seats have been without a working vehicle for months.

The lawsuit seeks compensation for damages tied to the loss of use of the vehicle, the diminished value of a recalled minivan with no available repair, and out-of-pocket costs owners incurred arranging alternative transportation. Plaintiffs are also seeking changes to how Toyota handles the recall — including making repair parts available on a faster timeline.

One NHTSA complaint cited in the lawsuit states the vehicle had been “out of service for over 80 days” with no repair remedy and no timeline for resolution from Toyota. No specific dollar amount has been confirmed in court filings yet, but product liability law allows plaintiffs to seek both compensatory and consequential damages when a defect makes a product unsafe to use.

No settlement exists. No claim form exists. No payout has been approved. This is an active lawsuit at an early stage.

What Should You Do If You Own an Affected Toyota Sienna?

Most 2025 Sienna owners affected by this recall are potential class members. You do not need to do anything right now to stay in the class — but you do need to protect yourself.

Here is exactly what to do:

• Keep every piece of paper. Save your recall notice, any Toyota app alerts, dealer communications, loaner vehicle agreements, and receipts for alternative transportation you paid for out of pocket. These records are your evidence.
  
• Document the loss of use. Write down dates when you could not use the second row, trips you had to cancel or restructure, and any expenses you incurred. A simple note in your phone with dates is enough to start.
  
• Check your VIN. Go to nhtsa.gov and enter your VIN to confirm your vehicle is part of the recall. You can also contact Toyota at 1-800-331-4331 with your VIN.
  
• Monitor the case. Follow Hamblin, et al. v. Toyota Motor Sales, U.S.A., Inc., Case No. 2:26-cv-03458 through the court docket or at Lemberg Law LLC’s website for updates on class expansion and hearing dates.
  
• Consider a free legal consultation. If you want to explore an individual claim rather than wait for the class action to resolve, contact a consumer rights lawyer or product liability attorney. Free legal consultations are widely available for vehicle defect cases. Do not wait — statutes of limitations apply.
  

Toyota says dealers will replace the second-row seat rails at no cost when a remedy becomes available, but has not provided a release date, stating only that the remedy is still being prepared. Until then, Toyota has told owners not to allow anyone to sit in or use child restraints in the second row.

Toyota Sienna Seat Rail Lawsuit Timeline

Milestone	Date
Defect Discovered (Internal Testing)	July–August 2025
Toyota Confirms Defect Could Cause Crash Injury	September 2025
NHTSA Recall Issued (No. 25V668)	October 7, 2025
Interim Recall Letters Mailed to Owners	December 4, 2025
Class Action Lawsuit Filed	April 1, 2026
Class Certification Motion	TBD — case in early litigation stage
Next Scheduled Hearing	TBD — no hearing date set yet
Recall Repair Available	TBD — Toyota has not confirmed a date
Expected Settlement Timeline	TBD — lawsuit recently filed; no settlement discussions confirmed

Frequently Asked Questions — Toyota Sienna Seat Rail Lawsuit

Is there a class action lawsuit against Toyota over the Sienna seat rails?

 Yes. The case is Hamblin, et al. v. Toyota Motor Sales, U.S.A., Inc., Case No. 2:26-cv-03458, in the U.S. District Court for the Central District of California, filed April 1, 2026. It covers 2025 Sienna Hybrid owners in Ohio and South Carolina, with potential expansion to other states.

Do I need to do anything right now to be included in the Toyota Sienna lawsuit? 

Not yet. Most eligible owners are automatically part of the class. Your job right now is to save all documentation — recall notices, dealer communications, and any expenses tied to the recall. Do not throw anything away.

When will Toyota fix the seat rails? 

Toyota has not provided a release date and states the remedy is still being prepared. Check your VIN status at nhtsa.gov and contact Toyota at 1-800-331-4331 for the most current update on parts availability.

Can I file my own lawsuit against Toyota instead of joining this class action? 

Yes. You can opt out of the class once it is certified and pursue an individual product liability claim with your own attorney. This may make sense if your losses are significant — such as months of rental car costs or documented injury. A product liability attorney can advise you during a free legal consultation.

How will I know if the Toyota Sienna lawsuit settles?

 Follow the case docket at the U.S. District Court for the Central District of California or monitor updates from Lemberg Law LLC. If a settlement is reached, all class members will receive written notice by mail. This website will also be updated when a settlement is announced.

Is it safe to drive my 2025 Toyota Sienna right now?

 Toyota has not issued a do-not-drive order for the Sienna. However, Toyota recommends no one sit in or use child restraints in the second row while driving until repairs are completed. If you have questions about your specific vehicle’s safety, contact Toyota directly at 1-800-331-4331 or visit a Toyota dealer.

How do I join the Toyota Sienna class action lawsuit?

 You do not need to actively join right now. If you own a qualifying vehicle, you are likely already a class member. To connect with class counsel directly, contact Trinette G. Kent at Lemberg Law LLC, the firm representing the plaintiffs.

Sources & References

• NHTSA Recall No. 25V668 — nhtsa.gov
• Toyota Official Recall Notice — pressroom.toyota.com
• Hamblin, et al. v. Toyota Motor Sales, U.S.A., Inc., Case No. 2:26-cv-03458, U.S. District Court, Central District of California
• Lemberg Law LLC — lemberglaw.com/toyota-sienna-seat-recall

Prepared by the AllAboutLawyer.com Editorial Team and reviewed for factual accuracy against NHTSA recall documents, the Toyota USA Newsroom, and court filings on May 5, 2026. Last Updated: May 5, 2026

Disclaimer: This article is for informational purposes only and does not constitute legal advice. Legal claims and outcomes depend on specific facts and applicable law. For advice regarding your particular situation, consult a qualified attorney.