2024 Toyota Sienna Hybrid

Three (3) separate systems failed. 1. Upon seeing cars ahead of us slowing down, my husband pressed the breaks to slow down to avoid collision. When he pressed on the breaks, instead of slowing down or stopping the vehicle, the brakes failed to engage, and caused a surge that compelled the vehicle to lurch forward. The lurch propelled our vehicle into collision with another vehicle. 2. Also, the forward collision warning system failed to alert or engage the breaks. Our vehicle was stopped by the impact of hitting the other vehicle, not by its own breaks. 3. The automatic breaking system also failed to engage at all prior to impact.

The contact owns a 2024 Toyota Sienna Hybrid. The contact stated that while driving at an undisclosed speed, the hatchback independently opened. No warning lights were illuminated. The vehicle was taken to a dealer where it was diagnosed and determined that the hatchback needed to be recalibrated. The vehicle was repaired; however, the failure persisted. The vehicle was taken back to the dealer where it was diagnosed and determined that the hatchback needed to be recalibrated. The vehicle was repaired; however, the failure persisted. The vehicle was taken back to the dealer again and was diagnosed and determined that the hatchback needed to be recalibrated. The vehicle was repaired; however, the failure persisted. The manufacturer was notified of the failure. The failure mileage was approximately 15,000.

I have never been in an accident in my 31 years of driving. However, I am worried that this van is going to cause me to be hit. Several times I have pulled out to make a left or right turn and my gas pedal does NOTHING. I can push it clear to the floor and NOTHING!!! Cars end up slamming on their brakes and honking at me but there's nothing I can do. This is EXTREMELY scary and a HUGE HUGE HUGE manufacturing flaw. There needs to be a recall for this to be fixed before people are injured.

Rear Tail Lights Failed... Brake and Signals work. This was repaired through the dealership. 4 connectors and housing replaced invoice shows part 909890-10942. I am writing to express my concern regarding repeated tail light failures on my black Toyota Sienna that appear to be caused by wiring connection issues. This defect creates a serious safety hazard for my family, other motorists, and pedestrians, particularly in rural areas where there is little to no street lighting. I live in the country, where many roads are unlit and visibility at night is already limited. Because my vehicle is black, it blends into the darkness when the tail lights fail. Drivers approaching from behind may not realize my vehicle is on the road until it is too late to stop safely, significantly increasing the risk of rear-end collisions. This issue is especially concerning because I frequently transport children in my vehicle. Their safety depends on other drivers being able to clearly see my vehicle at night. A tail light failure caused by a wiring defect could place them at unnecessary risk of serious injury or death if another vehicle is unable to see us in time. The defect also puts other drivers at risk. Motorists traveling at highway speeds on dark rural roads rely on tail lights to judge the presence, distance, and speed of vehicles ahead. Without functioning tail lights, they may have little or no warning that another vehicle is in their lane, particularly around curves, hills, or during poor weather conditions. This appears to be more than a routine bulb replacement issue. If the root cause is an unreliable wiring connection, the lights may work intermittently or fail unexpectedly, making it difficult for owners to recognize the problem before driving. An intermittent electrical failure is especially dangerous because drivers may believe their lights are operating normally when they are not. Started a case with Toyota 260715001670

Moving about 55 miles per hour on right lane of I-95 the Jeep in front of me braked abruptly. I braked hard but as my Sienna was quickly slowing down to stop, the brake pad felt spongy when it was slower and as I pressed even harder, it seemed to have stopped decelerating at that slower speed and that was when my Sienna slammed into the back of the Jeep. Happened today on July 15, 2026 at around 4:24 EST. I will also file this same report to Toyota. My wife and I are at the hospital getting checked, but my Sienna looked undrivable.

The power liftgate on my 2024 Toyota Sienna consistently fails to complete a full close-and-latch cycle. When activated, the liftgate begins its closing sequence normally but then aborts the cycle during the final stages of latching. The system emits an audible beeping signal and the liftgate reverses direction, reopening approximately one-quarter of the way. This failure occurs repeatedly when the vehicle is stationary with no external obstruction present. Multiple repeated attempts to close the liftgate using standard operation (key fob, interior switch, and exterior switch) result in the same failure pattern. The system does not complete a secure latch. Eventually, the liftgate can only be fully closed manually with physical force, bypassing the powered closing function entirely. This condition occurs intermittently at times but has become frequent and repeatable enough to prevent reliable use of the power liftgate system. No obstructions are present during operation. The local Toyota dealership service department observed this and indicated a lift gate adjustment is required, noting it is a known issue Toyota Customer Care has indicated they have no documented record of a known defect relating to this condition. However, multiple independent owner reports and dealer-level discussions indicate similar behavior may be occurring in other vehicles of the same model line, suggesting a potential systemic issue that may not yet be formally recognized. This malfunction raises potential safety concerns, including but not limited to: failure of the rear liftgate to fully secure and latch, increased risk of the liftgate remaining partially open or unlatched without clear driver awareness, and reliance on manual force to override an electronic safety system designed for automatic secure closure. I request that this complaint be documented for investigation and review to determine whether a defect trend exists in the power liftgate system of the Toyota Sienna platform.

I am the original owner of a 2024 Toyota Sienna Hybrid (VIN: [XXX]). The vehicle has required two significant engine repairs within the first 57,000 miles of ownership. Both repairs were performed at authorized Toyota dealerships under warranty. INCIDENT 1 — ENGINE REPLACEMENT (10,000 MILES): At approximately 10,000 miles, the engine developed severe knocking. The dealership determined the engine was defective and performed a complete engine replacement under warranty. INCIDENT 2 — OIL LEAK (57,000 MILES): At approximately 57,000 miles, the engine developed an oil leak between the oil pan and the timing belt cover. The dealership repaired the leak under warranty. The dealership informed me that this repair carries only a one-year warranty on the work performed. The fact that the engine required complete replacement at only 10,000 miles indicates a manufacturing defect. The second engine issue at 57,000 miles suggests a pattern of powertrain reliability problems. I contacted the Toyota Brand Engagement Center (Case #XXX) and spoke with both an advocate and a supervisor. Toyota declined to offer any extended powertrain coverage and would only agree to review future issues on a "case-by-case basis." I am concerned about the safety and long-term reliability of this vehicle's powertrain given the recurring nature of these engine failures. A complete engine failure at 10,000 miles on a brand-new vehicle is not normal wear and tear — it is a defect. I am reporting this so that NHTSA is aware of potential systemic engine issues with the 2024 Toyota Sienna Hybrid. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)