*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Unknown or other
1) 2015 Toyota Sienna sliding door is faulty and can cause the door to open at anytime. They need to replace the junction block, rear sliding door wire harness and wire as part of existing recall G04. It was completed for driver side in 2024 and recall was marked complete however in 2026 the passenger side is encountering same issue. This puts any family member or friends life at risk with the potential of 2nd row sliding door to open at anytime without fix. It has been reproduced buy Toyota is saying the recall is marked complete for my vin when it wasnât for both doors.
Oct 5, 2026Structure › Body
This is the 2nd Occurrence where Sliding Door Cable Breaks and the doors are disabled where you can not open or close the sliding door and its jammed shut. Attempts to press the Power Sliding door buttons do not work. This is the 2nd Occurrence on this Vehicle. The First occurrence happened approximately 3 years ago with the Driver Sliding Door and was report to Holman Toyota , 1301 NJ 73, Mt. Laurel township, NJ 08054. Now the passenger sliding door cable is broken and the door is jammed shut also
Sep 18, 2026Unknown or other
The cable that controls the sliding door lock disconnected leaving the door inoperable. According to the dealership, as well as, Toyota corporate, this is a common ongoing issue. This is a safety hazard and should be recalled immediately.
Sep 3, 2026Engine
Component Failed & Availability: The engine on my 2015 Toyota Sienna (99,000 miles) catastrophically failed and is completely seized. The vehicle and engine are in my possession and are fully available for physical inspection. Safety Risk: The vehicle shut down completely while in motion, causing an immediate loss of motive power, power steering, and power braking assistance. Had this un-warned seizure occurred at highway speeds rather than a parking lot, the sudden loss of vehicle control would have posed a severe crash hazard. Reproduced/Confirmed: Yes. A certified mechanic removed the serpentine belt, attempted to turn the engine with a lock bar, and confirmed the engine block is…
Aug 12, 2026Engine
I am submitting this complaint to request that the National Highway Traffic Safety Administration (NHTSA) document and evaluate what may be a broader defect affecting certain Toyota Sienna vehicles and determine whether it presents a potential safety-related defect trend. My 2015 Toyota Sienna was diagnosed by an authorized Toyota dealership with an external rear-bank head gasket leak. A head gasket is a critical engine component, and failure can result in coolant loss, engine overheating, reduced engine performance, stalling, or complete vehicle disablement. These conditions may create a safety risk, particularly if they occur while driving in traffic or at highway speeds. An authorized…
May 22, 2026Tires
I have requested urgent warranty evaluation regarding two Kumho Solus TA51a tires installed on my Toyota Sienna (Model: Kumho Solus TA51a, Size: 235/60R17 102H, DOT: 1824) Both front tires are exhibiting abnormal tread chunking and visible surface shredding. The tires are relatively new (purchased about 1-1.5 years ago) and have not been heavily used (only riding this car occassionally, about 5000-7000 miles per year). Our 2 rear tires are Kumho tires of different model, and although older, they are performing fine and do not experience these issues so it seems to be an issue on this particular Solus TA 51a model Kumho tires. Because this is our family vehicle and we transport our children…
Jul 1, 2026Steering
My 2015 Toyota Sienna has âStickyâ steering. When on a curve, like an highway curved ramp, the steering locks in place. I have to pull the steering wheel back to keep the car on track. When it sticks I can literally let go on a curve and it will hold itâs position. Even when driving straight this occurs. The steering wheel will stick in place requiring me to turn it to get the steering wheel to come back to the desired or correct position. Iâm seeing that this is a regular problem for Toyota steering across multiple models. Having your steering get stuck in place has the potential to be a very serious safety issue. This may cause an accident and resulting death. The complete repair…
Jun 15, 2026Unknown or other
Rain water leaking into the parked vehicle on the driver and passenger seat belts, potentially weakening the belts and creating odor.
May 22, 2026
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.
