616 of the 10,828 complaints filed about the Toyota Sienna are about the other systems — 6% of everything owners reported. The worst model year for it is 2004.
616
Complaints
6%
Share of all complaints
22
Crashes
8
Fires
UNKNOWN OR OTHER
AC light blinking AC condenser replacement twice in 2 years
NHTSA complaint #11755824 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
I have a flat tire the other day, and I try to put the spare tire on but it's gone. The spare tire's cable holds the spare tire under the car got corroded and broke. The spare tire is gone. It has lost some where on the road that I have not aware. I checked there is a recall for this. I called the toyota service but they said the VIN number is not on the recall list.
NHTSA complaint #11753914 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
We had our van parked on a driveway with a front facing slope, we had hard rains went we where going away there was water coming out of the seat belt on the passenger side and the panel above the window was stained down to the window support where the air bag is. I've been reading reports as far back as 2008 we have a 2020, went taken to the dealer they want 1000 to 2700 to remove the head liner and try to fine the problem, which what was reported didn't help. The dealer recommended to not park with the front of the van facing down hill if rain is forecast, my problem is that Toyota has not been required to fix the leaks. I'm calling my local dealership tomorrow about are leak.
NHTSA complaint #11745526 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
The electric sliding door cable broke due to unknown reason and the door partially opened and will not open even manually now.
NHTSA complaint #11741645 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
Rain water leaking into the parked vehicle on the driver and passenger seat belts, potentially weakening the belts and creating odor.
NHTSA complaint #11739438 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
"The vehicle suffered a critical failure of the shift interlock safety system. After parking in a driveway, the ignition key was able to be fully turned to the 'off' position and removed from the ignition cylinder, even though the transmission was not successfully secured in 'Park.' After the key was removed and I and went into the house the van rolled away. It traveled downhill, crashed through a fence, and collided with a residential structure, causing significant property damage to the house and vehicle. This failure could potentially cause serious injury or death and this was the first time that it had occurred and is exhibiting the same failure as described. Immediately following the collision, video evidence was recorded showing the key in hand while the dashboard indicators and shifter remained out of the 'Park' position. This indicates the safety mechanism designed to prevent key removal unless the vehicle is in 'Park' failed to operate, creating a life-safety rollaway hazard."
NHTSA complaint #11737724 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
[XXX] [XXX] / [XXX] [XXX] 2010 Toyota Sienna Possible Shifter Interlock Failure: On [XXX] my [XXX] child found his way into the driver’s seat of our 2010 Toyota Sienna while the vehicle was parked in the driveway. According to my wife, there were no keys in the vehicle, and the vehicle was in park. In an instant, my wife (who was outside the van) helplessly observed the van begin to roll backward down the driveway and then across the sidewalk (on our side of the street), then across the street, and then across the sidewalk on the other side of the street and into the neighbor’s yard where it finally came to a rest. She said she heard something like grinding gears. I presume my son was trying to put it in park. Thankfully no property damage or personal injuries occurred during the incident. I [XXX] ) was not home when this happened. When I returned home, I inspected the van to see if my son was able activate the emergency shift lock release. I found the cover was intact and evidence of tampering was not observed. I then checked to see if I was able to pull the shifter out of park. Initially, I was unable to, but after a few tries and a little force, I was able to pull the shifter out of park (no keys in ignition, no brake compression, vehicle off) and the van began to roll. Our driveway is somewhat sloped. I replicated this procedure several times: a little force and a little wiggle and clunk, the shifter released and the van rolled. I discovered there was a recall for this very problem on 2010 Sienna’s (NHTSA Recall No.: 17V-657). I entered the Sienna’s VIN number on NHTSA’s website and found no active recall for the VIN number entered. I contacted Toyota of North America (1-800-331-4331) and chose to advocate and spoke to an agent and reported the problem. She was able to determine that the vehicle had been under the recall, but the van was “repaired” in 2020 which is the year we bought the van INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11733508 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
cable broke on sliding door and unable to open or access cabin on that side. turned off power to door and still unable to force door open making it difficult to unlatch car seat on that side. safety hazard in accident or rollover
NHTSA complaint #11730749 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
Started hearing a whining noise upon acceleration. Took car to Toyota for a diagnostic check. Discovered transmission is failing. Recommended repair is a full transmission replacement, quoted $10,000. After bringing to a local mechanic for a second opinion, he claims this is a widespread issue with Toyota Siennas in similar years. After some research, Toyota quietly claims there was an issue in the manufacturing of these transmissions however won’t take accountability
NHTSA complaint #11724299 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
While driving, there was a recurrent sound like doors locking and unlocking, several dozen times over a half hour drive at 50 miles per hour. When stopped, the passenger side sliding door opened by itself. Luckily, my dogs were in a kennel or they might have jumped out of the car. I closed it and it opened by itself again. At home, the passenger side sliding door opens when my neighbor presses the button on his key fob to open his non-Toyota pickup truck. It will not open or close when I press the button on my Sienna key fob.
NHTSA complaint #11708132 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
I was at a red traffic light. I pressed the brake pedal. The vehicle wouldn't stop. The engine was revving. This happened twice within a month.
NHTSA complaint #11701539 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
Lyft deactivated 60yo driver (7yr Lyft, 30yr driving) over vague "unsafe driving". Submitted **20 raw dashcam videos** (Oct 29, 2025) proving: - Full stop at flashing red light - Safe rolling stops (<4 mph) in Toyota Sienna + 3 passengers - Max 28 mph Videos requested by Lyft but ignored. **Tickets:** XXX/ XXX/ XXX **Evidence:** https://drive.google.com/drive/folders/1OIgAwnaAV8Jr8GS4uiUcmqwYodmgCAWy?usp=sharing Lyft violates safety policy (§7.3). INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11697965 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
I am writing to report a significant safety issue with my vehicle involving a leaking sunroof that is causing damage to both the seatbelts and airbags. I believe this issue poses a serious safety concern and could lead to malfunctioning safety systems during an accident. I asked my local Toyota dealership for guidance adn they told me to clean the drain tubes out with weed eater wire. We tried that and the drains were working fine. If that did not work, it would be 3-5 thousand dollars to fix it. I have reported this issue to Toyota cooperate, but they are not willing to acknowledge the issue because of the year and miles on my van. There are several other Toyota Sienna van owner that have experienced the same problem and yet a recall has not been issued. This is my family vehicle that I drive my young kids around in. I feel that Toyota is willing to put my family's safety on the line by not acknowledging this on going issue. Issue: The sunroof in my vehicle has developed a leak over the past year that continues to get worse. The leak is allowing water to enter the cabin during rain. The water appears to be collecting around the area where the sunroof is installed and is dripping onto the headliner, seatbelts, and side airbags. It soaks my driver and passenger seatbelts for days. Damage: Over time, this leak has caused visible deterioration to the seatbelts, as they are getting wet and showing signs of wear. Additionally, the airbags may be at risk, as moisture could affect their proper deployment during an accident. I am concerned that the presence of moisture may result in these safety features malfunctioning when needed most. This could potentially be a fatal issue.
NHTSA complaint #11697428 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
While driving our vehicle on the highway, the check engine light suddenly came on and traction control turned off. Within moments, the vehicle began to stall and would not accelerate. My wife and children were in the car and we were nearly hit by another vehicle as she struggled to get the car to safety. It was a terrifying experience that put my entire family in danger, along with everyone else on the highway. Upon taking the car to the dealership, we were told the transmission failed and would need to be replaced.
NHTSA complaint #11694813 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
The seller selling vehicle to me with incorrect miles
NHTSA complaint #11688120 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
Wining noises, feels like car is shaking, and get fast by itself
NHTSA complaint #11677974 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
My 2012 Toyota Sienna having problem while braking on highway 65mph or above, when i hit brake it's start shaking so bad and brake doesn't work properly. i believe it is sway bar link or lower control arm. even i had replaced once, it didn't helped and again i claimed warranty and replaced other set, but still having same issue.
NHTSA complaint #11674058 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
Both of the cables on my power doors have snapped now. Turned off switch & have been doing doors manually. The rear passenger side one doesn't like to slide and doesn't open fully.
NHTSA complaint #11670561 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
2013 Toyota sienna van sliding doors. Driver sliding door opened on its own while driving down the road. Passenger side door will not open from the inside. This is a danger to my daughter who sits in the backseat if the door opens while I’m driving down the highway. Or she can’t get out because it will not open
NHTSA complaint #11658586 — an unverified report by a vehicle owner.
UNKNOWN OR OTHER
I just but this car but I think the seller changed the mileage on it.
NHTSA complaint #11653586 — an unverified report by a vehicle owner.