While driving my new 2026 Toyota Sienna Woodland Edition home from the dealership on the day of purchase (XXX), I applied routine braking to stop at a yellow light. Both second-row captain's chairs, which had been slid fully rearward and left in the upright position during the dealer's cargo-space demo, and which I assumed had been properly locked, suddenly slammed forward with extreme force into the back of the front seats, and the seatbacks self-folded on impact. Notably, both chairs failed identically and simultaneously, which suggests a systemic design or manufacturing issue rather than an isolated event. Had a person or object been positioned between the chairs and the front seats, they would have been struck or crushed; any item on top of the chairs could have become airborne. My canvas bag in the cargo area was compressed by the force. Summary: the seats appeared to fail to latch/lock securely in their rearward track position. After the incident I was unable to move or release the chairs from the collapsed position, though this could have been due to my own lack of expertise on how to operate the chairs. No injuries occurred because the seats were unoccupied at the time, but this presents a serious injury risk to occupants under normal braking conditions. On XXX I took the vehicle to a second dealership, Bev Smith Toyota in [XXX], for inspection. The tech's video and resulting service invoice incorrectly claimed the seats were "unlocked" and not in the upright position at the time of the incident, stating "No problem found." I disputed this in writing, since the seats were indeed upright. I asked Bev Smith to conduct a safety test drive but the invoice does not show this was done. I asked for a demo of the seats and was shown how to lock and confirm stability, a step the average consumer might skip entirely, simply pulling the seats back and assuming they were latched, as Palm Beach Toyota had done. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Less than 1000 miles on my car i do not remember exact dates hence i have added todays date for incident date.All three incident happend in three different days. Scenario 1 two times. Scenario 2 one time --- SCENARIO 1: Curved Road / No Lane Markings --- Conditions: ACC set at 25 MPH on an undivided two-way road with no lane markings. Parked vehicles present at curves; oncoming traffic at safe distance. Issue: On two separate occasions, the vehicle applied sudden, significant braking without driver input while navigating curves. No imminent collision risk existed. The abrupt speed reduction created a rear-end hazard from following traffic. Reported to Toyota support: YES --- SCENARIO 2: Michigan Left Turn Lane / 40 MPH --- Conditions: ACC active at 40 MPH on a multi-lane road with a dedicated Michigan Left turn lane. Forward path in my lane was clear. Issue: A vehicle ahead moved into the Michigan Left turn lane and began decelerating. As my vehicle accelerated (path now clear) and was still slightly behind — approaching but not yet parallel to — the turning vehicle, the system applied brief unexpected braking. The turning vehicle then moved further forward to complete its Michigan Left maneuver ; my vehicle resumed normal speed when some diagonal distance had been seen. Reported to Toyota support: NO ACTION REQUESTED: Investigate whether Toyota Sienna's PCS/ACC (1) miscalibrates object detection on unmarked curved roads and (2) fails to distinguish lateral vehicles from forward obstacles. Software update or remedy may be warranted.

While slowing to a stop sign at a normal speed, the 3rd row, which does not lock into place, flew into the upright position. Thankfully it had nothing on top of it, but if it did my children in the second row would have been seriously injured.

The contact owns a 2026 Toyota Sienna. The contact stated while driving at an undisclosed speed, the rear window glass shattered. No warning lights were illuminated. The vehicle was taken back to the residence. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 6,442.

The sun roof glass spontaneously combusted