2015 Toyota Sienna Problems

Half of the owners who gave a mileage had the problem by about 26,000 miles. Parts named most: Body (53), Body: door (6).

What to check before you buy

• Look underneath with a flashlight. Utah road salt is hard on frames, brake lines and the bottoms of doors.
• Open and close every door, the hood and the liftgate, and lock and unlock each one.
• Use a paint thickness gauge and compare panels. A panel that reads very differently from the rest has likely been repaired.

Tools that help

What owners said

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…Owner complaint, filed 2026

Fuel filler door upper hinge failed so that door would not seat properly when closed. Because the door was not seated properly, the left side power sliding door interlock did not release, preventing the sliding door from opening fully. I had visited a fast food restaurant in Feb 2025 and ordered some French fries for my[XXX], strapped…Owner complaint, filed 2025

Half of the owners who gave a mileage had the problem by about 19,000 miles.

What to check before you buy

• Test every switch: windows, locks, mirrors, seat heaters, the screen, the backup camera, Bluetooth and every USB port.
• Watch the dash at startup. Every warning light should come on briefly and then go out.
• Have the battery and charging system tested. A weak alternator or battery drain shows up here.

Tools that help

What owners said

Odometer Fraud. The contact purchased a 2015 Toyota Sienna. The vehicle was a private sale. The contact stated that at the time of purchase, the mileage was 92,862. The contact later purchased a Carfax Report which indicated that the last odometer report in 2024 showed that the mileage was 205,000. The seller was made aware of the…Owner complaint, filed 2026, at 205,000 miles

Odometer Fraud. The contact purchased a 2015 Toyota Sienna. The vehicle was purchased from a private seller. The contact stated that while registering the vehicle at the local Department of Motor Vehicles, the contact was informed that the odometer mileage was last recorded at 141,000. The contact later purchased a Carfax report, which…Owner complaint, filed 2025, at 287,000 miles

Half of the owners who gave a mileage had the problem by about 33,000 miles.

What to check before you buy

• The pedal should feel firm and the car should stop straight without pulling, grinding or a pulsing pedal.
• The ABS and stability control lights should go out after startup and stay out.
• Look through the wheels at the rotors. A deep lip on the edge means brakes are due soon, which is a fair thing to negotiate on.

Tools that help

What owners said

When vehicle is in reverse the rear breaks on passenger side start squealing and making a loud noise when applied specially when vehicle has been stopped for while however on occasion it does it every time you back up when applying break.Owner complaint, filed 2022

When I drive this van downhill on a curve not fast slower than 40mph, the antilock brakes engage violently and hard and jerky I do not have my foot on the brake when this happens. I'm not going fast. But the ABS is so violent it causes me to lose control of the steering. It happened 3 times in 24 hours and always in same situation. Only…Owner complaint, filed 2021

Half of the owners who gave a mileage had the problem by about 46,000 miles.

What to check before you buy

• Read the four-digit DOT date on each tire. Tires older than about six years should be replaced, whatever the tread looks like.
• Check tread depth on all four. On AWD vehicles all four tires should match.
• The tire pressure light should go out after startup.

Tools that help

What owners said

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…Owner complaint, filed 2026

We recently had two Dunlop P 235 / 50 R 19 tires fail on our car. On 11/5/21, the front passenger-side tire tread and belt began to unravel while driving at freeway speed. This happened suddenly, with no warning lights, and we became aware of the problem when we heard a loud thumping noise from the unraveled tire striking the underside…Owner complaint, filed 2021

Half of the owners who gave a mileage had the problem by about 39,000 miles.

What to check before you buy

• Ask the seller not to warm the car up, and start it cold. Listen for ticking, knocking or a rough idle in the first minute.
• Pull the oil dipstick and the oil cap. Low oil, a gasoline smell or a milky film on the cap are reasons to walk away or get an inspection.
• Plug in an OBD2 scanner. Stored or pending codes matter, and so do readiness monitors that show "not ready", which usually means the codes were cleared right before the sale.
• Ask for oil change records. A gap in the records on a model known for engine complaints is a negotiating point at minimum.

Tools that help

What owners said

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…Owner complaint, filed 2026

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…Owner complaint, filed 2026

Half of the owners who gave a mileage had the problem by about 33,000 miles.

What to check before you buy

• Drive it from cold if you can. Shifts should be smooth in every gear, including reverse.
• Feel for slipping (revs rise without the car speeding up), shudder at low speed and a delay when you put it in gear.
• Listen for whining, which is a common CVT complaint, and clunks when you go from drive to reverse.
• If it has 4WD or AWD, engage it on the test drive and ask when the transmission and differential fluids were last changed.

Tools that help

What owners said

On April 15, 2026 Report filed with NHTSA from an accident-causing property damage due to a failure in the shifter mechanism while the vehicle was parked, ignition off, no keys in the vehicle and the brake pedal was NOT pressed. Manufacture initiated an investigation after we contacted their customer care line. Our vehicle was taken to a…Owner complaint, filed 2026

On April 15, 2026 Report filed with NHTSA from an accident-causing property damage due to a failure in the shifter mechanism while the vehicle was parked, ignition off, no keys in the vehicle and the brake pedal was NOT pressed. Manufacture initiated an investigation after we contacted their customer care line. Our vehicle was taken to a…Owner complaint, filed 2026

Half of the owners who gave a mileage had the problem by about 20,000 miles.

What to check before you buy

• Check every light: headlights on low and high, fog lights, brake lights, turn signals and reverse lights.
• Run the wipers on every speed with washer fluid, and run the defroster front and back.

Tools that help

What owners said

In january 2021, while sitting in the driveway an eight inch crack appeared in the middle of the windshield. The windshield was replaced in september 2020 after purchasing the vehicle as a repo. The windshield that was replaced was cracked the entire width of the glass in the exact same place where the new crack has appeared. The vehicle…Owner complaint, filed 2021, at 83,500 miles

The contact owns a 2015 toyota sienna. While the vehicle was parked in the driveway, the rear passenger side quarter panel window exploded without warning. The dealer (courtesy toyota of brandon, 9210 e adamo dr., tampa, fl 33619, (813) 639-8045) was contacted, but the vehicle was not taken in for diagnostic testing or repairs. The [VIN]…Owner complaint, filed 2018, at 37,857 miles

Half of the owners who gave a mileage had the problem by about 39,000 miles.

What to check before you buy

• Turn the wheel lock to lock while parked and listen for groaning, clicking or binding.
• On a straight road the car should track straight with the wheel centered and no loose feeling.
• A power steering warning on the dash, even briefly, deserves a mechanic’s look before you buy.

Tools that help

What owners said

My 2015 Toyota Sienna has “Sticky” 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 it’s position. Even when driving straight this occurs. The steering wheel will stick in…Owner complaint, filed 2026

The power steering has a notch or almost a stickiness when turning. In turns around interstate ramps the steering almost locks in place requiring physical effort to get the steering to straighten back out. Even driving in a straight line one can feel this notch like feeling where the steering wheel is not operating in a smooth manner.…Owner complaint, filed 2026

Half of the owners who gave a mileage had the problem by about 27,000 miles.

What to check before you buy

• Pull out and latch every seat belt, and let each one retract on its own.
• Try every seat adjuster, and watch for a passenger air bag "off" light when an adult is in the seat.

Tools that help

What owners said

Passenger side middle row seat belt has locked up fully retracted. Dealership service center stated on invoice, “nothing found to be causing the binding other than a mechanical issue, quoted replacing the seat belt assembly.”Owner complaint, filed 2024

Seat belt will not retract. No accident/collission. It seems the seat belt is defected and dealer refuses to correct, stating seat belt is out of warranty. My child pulled the seat belt to put it on and it just simply did not retract.Owner complaint, filed 2020

Half of the owners who gave a mileage had the problem by about 48,000 miles.

What to check before you buy

• The air bag (SRS) light should come on at startup and go out within a few seconds. If it stays on, the system may not work in a crash.
• Air bag recalls are some of the most serious. Check this exact VIN for open recalls and get proof any recall work was done.

Tools that help

What owners said

I had a front damaged car accident in 2016. I realized that none of airbags were deployed since I was asked by at fault driver's insurance attorney. I was driving on a local one way road and a car showed up in front of me all of a sudden. It was crossing in front of me as ignoring "stop" sign on his side. It was too close to avoid and…Owner complaint, filed 2020, at 7,000 miles

My vehicle was recently stolen. It was recovered as a crashed abandoned vehicle by the glen ridge police department (case #19-20437). The vehicle suffered an apparent major frontal collision but the airbags failed to deploy (see images). I am reporting this failure for your investigative reference. I have no further details as it was not…Owner complaint, filed 2019

Half of the owners who gave a mileage had the problem by about 10,000 miles.

What to check before you buy

• Drive over a few bumps and potholes slowly with the radio off and listen for clunks or rattles.
• Check the tires for uneven wear on the inside or outside edges, a sign of alignment or suspension trouble.
• Look behind the wheels for oily, wet shocks or struts.

Tools that help

What owners said

Purchased my sienna in february, 2019 with 41k miles. Days after purchase, I brought a noise to the dealerships attention and was told it was road noise. Fast forward to june, 2019 and the noise is worse. My driver's side strut is blown at 44k miles. Finding a [VIN] has been a hassle. This part is obviously a [VIN] defect and should be…Owner complaint, filed 2019, at 44,000 miles

I am a disabled federal employee. I have a new handicap conversion van from vmi vantage mobility int. It is not safe to drive. The suspension is horribleOwner complaint, filed 2018, at 9,800 miles

Half of the owners who gave a mileage had the problem by about 42,000 miles.

What to check before you buy

• Smell around the engine bay and under the rear of the car for raw fuel.
• On the test drive, accelerate firmly from a stop and up a grade. Stumbling, surging or a flashing check engine light are red flags.
• Fuel pump recalls are common. Check this exact VIN for open recalls before you buy.

Tools that help

What owners said

There is an EVAP emission leak and the P0456 error states the gas cap is faulty. I had it replaced and replaced again. So I am waiting for another brand new gas cap-3rd brand new one. So 4th overall for this van. A smoke test was done and there is no leaks per the test. So if this continues after the brand new gas cap, then there should…Owner complaint, filed 2024

The fuel pump intermittently fails. Sometimes it won't start at all, sometimes it starts but the engine stumbles before it shuts off, and sometimes the engine will just shut off while accellerating on the road. Toyota has diagnosed it as a bad fuel pump and are in the process of replacing it at my cost.Owner complaint, filed 2020, at 42,500 miles

What to check before you buy

• On the test drive, press the gas gently and firmly. The response should be smooth with no lag or surge.
• Set the cruise control, then use resume and cancel to make sure each one works.

Tools that help

What owners said

I was at a stop light when I slowly started to lift my foot from the brake pedal. The engine started revving up and accelerate. I pressed the brake pedal normal , then harder when it would not stop revving. I looked down to see if I was hitting the gas pedal by accident. I was not, about after 5 seconds it stop revving. I went about a…Owner complaint, filed 2022

The contact owned a 2015 toyota sienna. The contact stated that the cruise control failed to deactivate when the brake pedal was depressed. As a result, the vehicle was involved in a front impact collision. The air bags deployed. The contact sustained a severe head injury, the front seat passenger sustained a broken nose and cracked…Owner complaint, filed 2018, at 13,000 miles

What to check before you buy

• Where it is safe, try the adaptive cruise and lane keeping on the test drive and watch for sudden braking or warnings with nothing there.
• Check the windshield in front of the camera and the bumper sensors for cracks, chips or poor repairs.
• Ask whether the windshield has been replaced. The camera has to be recalibrated afterward, and many shops skip it.

Tools that help

What owners said

I have had this car for 7 years. Started having issues a year ago and despite bringing it to Toyota 2x, they cannot tell me what the issue is. I will be driving on a regular flat paved road when the car will suddenly brake and pull me towards the side of the road. I get the ABS code sometimes and also the slip indicator light. I've…Owner complaint, filed 2025