What 152 owners told NHTSA about the 2017 Toyota Sienna

Wining noises, feels like car is shaking, and get fast by itself

NHTSA ODI 11677974

We have started to experience the transmission whine at that is specified in Toyota's CSP ZJC documentation. We took our vehicle into our local Toyota Dealership Service Center and they confirmed that the whine was a transmission issue and that the only course of action to take would be to replace the transmission. Our vehicle was manufactured in the specified window (manufacture date 10/2016, manufacture data window from the program 7/2016-2/2018), it has the specified transmission model (UA80), we are within the coverage window stated in the support materials (within ten years of first use), we are experiencing the same transmission symptoms described in the program support materials (whining transmission noise), and we have been recommended by our local Toyota Service members to replace the transmission. From this information, it appears that we meet the criteria and are suffering the same issues as are referenced in the ZJC materials, but our VIN is not included in the program. I believe that is an error and the program should be expanded.

NHTSA ODI 11667927

The contact owned a 2017 Toyota Sienna. The contact stated that while driving alone at 70 MPH and attempting not to hit tire tread in the road, she crashed into the median, her vehicle drove into a ditch, the vehicle spun twice, and then crashed head-on into a tree where it came to a stop. The driver's side air bags did not deploy, but the passenger air bags deployed when there was no occupant seated. The contact sustained neck and back injuries, and medical attention was sought via the hospital. A police report was filed, but it was not available at this time. The vehicle was towed to a tow lot. The manufacturer was not notified of the failure. The failure mileage was 216,000.

NHTSA ODI 11661794

October of 2024 my van stalled while I was driving. The van was towed to an auto shop. The shop suspected a battery & alternator so replaced it. Later that same week I filled my tank at Delta Sonic and immediately proceeded to the car wash. My van stalled in the car wash. Once I was pushed out I had it towed again. I drove it for a few weeks and filled up the tank at Delta Sonic but this time the van didn’t start at all. Towed the van again. Shop thinks my issue is resolved- did a complete check of everything & returned my van to me. A week or so goes by and I filled my tank late at night and it wouldn’t start after fill up. A tow was not available. Scared and frustrated I called multiple people for help. Two hours pass, before I try to start the van again. It starts. Now I am starting to correlate a fuel fill up with my van not starting after re-fueling. My safety and my grandchild’s safety was jeopardized when my van stalled while driving in an extremely busy roadway. The next time, Multiple people had to push me out of the car wash and the last time I was forced to sit at gas pumps waiting for help. I stop filling my tank to full and take the van to Toyota. They confirmed the fuel pump was the issue and fixed it.

NHTSA ODI 11661747

On [XXX], I was involved in a car accident in Saint John, Indiana, while driving my 2017 Toyota Sienna. The vehicle was hit on the passenger side, but none of the airbags deployed. As a result, I sustained serious injuries including cervical disc herniations, nerve compression, and ongoing pain. Since then, I’ve been unable to perform daily tasks, drive, care for my children, or work as I did before. I confirmed with Toyota that my vehicle has no active recalls, including for airbags, yet this failure occurred. There were no warning lights or messages prior to the incident. The airbag system has not yet been inspected or confirmed defective by a service center, but I am willing to make the vehicle available for inspection if needed. I am requesting that NHTSA investigate this failure, as it may represent a serious safety defect that could affect others driving the same model. I can provide supporting documentation, including medical records, police report, and photos of the vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11660531

Transmission failure. The dealer confirmed the issue and was repaired at an independent shop. There are no warning lights and only audible sounds that caused us to have it checked out. This appears to be a more widespread problem as Toyota did issue a TSB for a subset of VINs of this model year.

NHTSA ODI 11657293

Pressure Control Soleneoid "A" Prformance stuck oof -P0746. Second opionin: Valve bddy Assembly clutch kits inside transmission. Toyota of Dallas refuse to provide service. I had done Tranmission service done by them . Need to get it fix van with new transmission installed and correct any other recall of 2025 to be fix.

NHTSA ODI 11644315

after hearing wining noise from transmission as driving down highway at full speed with out warning car suddenly and quit violently came to a stop . no waring lights ! transmission appears to be in two gears at once reverse and forward will only roll if put in neutral .internal failure in the transmission according to the dealer . The car not included in the recall issued for the same year make and model for the same thing. extremely dangerous wife and kids in the car when it happened.

NHTSA ODI 11629927

This has happened multiple times. Driving at various speeds. Sometimes driving straight other times turning. ABS activates with out cause. ESC light illuminates. Happens when in traffic causing the van to try to stop in traffic without warning. Thus far mechanic has not been able to duplicate.

NHTSA ODI 11627052

The contact owns a 2017 Toyota Sienna. The contact stated that after parking the vehicle, the odor of fuel was present coming from the engine compartment. The vehicle was taken to the local dealer who discovered that the plastic fuel lines were damaged due to the expanded anti corrosion coating applied to the fuel lines during manufacturing of the vehicle. The contact was advised to replace both the metal fuel lines from the fuel tank to the engine bay and the damaged plastic fuel lines. The vehicle was repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was 84,416.

NHTSA ODI 11620939

While trying to accelerate on an onramp to the highway, the transmission failed to enter into higher gear, and the check engine light came on. The 2017 Sienna currently sits at 112,951 miles. Leading up to this, we had noticed the van jolting when being put into drive or reverse, and acceleration was often sluggish, with a whirring sound. Inspection by the local Toyota dealership found that the entire transmission needed to be replaced. The serial number of the transmission starts with UA02, which wasn't part of any of the existing 2017 Sienna service bulletins.

NHTSA ODI 11619921

The contact owns a 2017 Toyota Sienna. The contact stated while driving at an undisclosed speed, the contact became aware of a hard shift and a high-pitched whining sound while the transmission was shifting. The vehicle was taken to an independent mechanic where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. In addition, the contact was informed that the repair was not covered under recall. The failure mileage was approximately 110,000.

NHTSA ODI 11617302

For about five months now, when we COMPLETELY fill our gas tank (2017 Toyota Sienna) even to the point of overflowing bit, the dashboard Fuel Indicator red arrow no longer goes all the way over to the right AND the "distance until empty" mileage is much less than what it should be (ie 306 miles vs approx 440 miles). We have tried the resets, which don't work. We only use good-grade gasoline.

NHTSA ODI 11612376

I was driving around 30 MPH when the vehicle suddenly turned off. The engine stopped running, all instrumentation turned off, no power steering and no brakes. The car became uncontrollable until it coasted to a stop.

NHTSA ODI 11604798

Rear liftgate opens, but then beeps as if closing, then does close without us wanting it to, slowly halfway, then slamming down after half-closed as if hydraulics or whatever holds up liftgate is failing. Anyone under door gets caught/slammed on. Yes, dealer rep has seen it happen at our local Toyota service center. The vehicle or component has not been inspected by the manufacturer, police, insurance representatives or others. There aren't any warning lamps, messages or other symptoms other than the usual beeping closing sound of the problem prior to the failure, and they first appeared Wednesday, May 1.

NHTSA ODI 11587670

On Sunday, [XXX] (at 78,793 miles), our MY17 Sienna XLE AWD suddenly displayed a Malfunction Indicator Lamp (MIL) and a message advising "Check AWD System". The vehicle disabled its cruise control system and AWD system, and no longer displays the Eco indicator when traveling at constant speeds on flat terrain. There was no obvious change to vehicle shifting behavior; the shifting has always been sluggish and occasionally "hangs" at higher RPM before downshifting. There were no symptoms or MILs prior to this incident. We consider AWD to be a safety feature when driving with snow or rain, and we frequently traverse Box Elder Canyon where the summit is nearly 6K feet above sea level. We stopped by an auto parts store (O'Reilly) where they pulled codes from the OBD-II sensor. Their reader showed 3 codes: P2714, P0741, and P2757). The vehicle is currently at Young Toyota in Logan, UT. Young Toyota advised that while the vehicle codes are consistent with bulletin [XXX] , that it is not included by Toyota under their list of affected transmissions. The service agent said a solenoid that governs locking the torque converter was "stuck". Since it is outside the 60K miles/60 month powertrain warranty, Toyota is unwilling to provide goodwill towards a fix. The dealer recommended a "software fix", which may or may not solve the issue, and that a transmission replacement would follow. I am simply in shock that a vehicle we purchased new, have carefully maintained (including through Toyota's maintenance plan for 60K miles), could potentially have a failing transmission below 150K miles. This is the UA80F 8-speed automatic transmission, which I believe was first-equipped on the MY17 Sienna, replacing a reliable 6-speed A/T. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11579413

Mi toyota sienna 2017 se le daño la transmision con 62,000 milla de uso. Estaba transitado por la carretera aproximadamente a 40 milla por hora, cuando de repente pegó freno y se detuvo. Por poco provocó un accidente. La lleve a la toyota y me dice que es transmision. Pero me informaron que no era su problema. Estuve averiguado este problema y varios me dijero que ese era un problema común en esta guagua. Para mi esto es un problema de fábrica Se supone que lo arregle sin costo. Estoy en lo correcto o no

NHTSA ODI 11573031

On [XXX], I was driving down the highway in Grand Rapids, MI when the sunroof above me suddenly exploded for no apparent reason. Thank God I had the interior cover closed at the time or I would have been covered in glass while driving down the highway. I pulled over, took pictures, and called my insurance provider. They have given me a real runaround about getting it repairs, offering to cover less than 10% of the repair cost. Neither the dealership, nor the glass shop could offer any reasonable explanation of why it shattered. The insurance company adjusted the claim via photos. I am currently waiting for them to offer fair compensation so that I can get it repaired. Repair cost estimate is $1335. If this is a defect, as it appears from some online searching, it should be covered my the manufacturer. It appears multiple individual and class action suits exist. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11563477

The contact owns a 2017 Toyota Sienna. The contact stated that while driving at an undisclosed speed, after coming to a complete stop and attempting to accelerate, the vehicle suddenly stalled. After restarting the vehicle, the vehicle returned to normal functionality, but the failure became a regular occurrence. The traction control warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the transmission. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 20V682000 (Fuel System, Gasoline) however, the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was 65,000.

NHTSA ODI 11556249

At 70000 miles and around 9/1/2023, started to notice our brake stop suddenly steep down pedal when braking at 45mph or higher. Problem starts after fuel pump replacement recall completed by dealership August 2023. Check recall and campaign program, my vehicle VIN specifically not on the recall list for brake booster vacuum pump. I thinks Toyota HQ should take my vehicle into consideration since my vehicle is a 2017 Sienna. Contact HQ they refused to offer to diagnosis nor help replace if applicable. Due to your vin not on the recall, your on your expense.

NHTSA ODI 11552371

I was driving and suddenly the 2017 Toyota Siena just lost all acceleration. The car no longer could move in gear. I put car into reverse or drive or any other gear and the vehicle would not move. The engine was on. The parking brake was not on. The transmission seems to have had a major malfunction. I had to have my car towed and my enitre family was stranded. I then looked up tranmission issues and found that 2017 Toyotas have a serious tranmission issue under “ Certain 2017 to 2018 Model Year Toyota Sienna Certain 2017 to 2018 Model Year Toyota Highlander Coverage for UA80 Transmission Customer Support Program ZJC”. I have approx 35000 miles on this vehicle and I bought it close to used from a Kingston Prestige Toyota dealership in New York State.

NHTSA ODI 11551218

Parked the car on an incline (our driveway) like we have a 100 times before. Went inside to unload groceries. Came back to the car and from the passenger seat reached over to press the auto-off button. When that was pressed the car started to roll down our driveway with our daughter in the back seat. It rolled across the street, hit the side of our neighbors house, and landed in the woods. My wife sustained major injuries to her arms, legs, hands, and back. She was also 9 months pregnant. Toyota dealership says there's nothing wrong after a 30 minute inspection.

NHTSA ODI 11542820

While traveling at a high speed, van's power train jerked hard and rapidly slowed on its own, not allowing me to excelerate. Almost rear ended by following vehicle that managed to swerve around to avoid my rapid deceleration. Check engine light came on and was hard to start. Had to allow the van to sit a while before I was able to start. Van acted like it was in limp mode. This malfunction has occurred several times. Mechanic code shows P0087 fault code. Low fuel pressure. Toyota has recalled many of these vehicles in this year for this issue, but mine seems to not be one of them. Very dangerous.

NHTSA ODI 11539491

When going down a parking ramp exit, my foot has slipped off the brake 3 time. When looking at the brake pedal it is smaller than most brake pedals. I don't know if anyone else has had this problem, but mandating a minimal size for brake pedal might help

NHTSA ODI 11528321

Purchased used vehicle from a Toyota Dealership on or about March 27, 2021. The dashboard illumination on the 2017 Toyota Sienna only appears to operate when the vehicle is turned on AND the front headlight selector is moved to the on or automatic mode. I do not believe it is a standard feature for any vehicle to NOT illuminate the dashboard without the headlights being turned on. Issue: With no illumination of the tachometer and speedometer these items are nearly impossible to see. That naturally forces the human eye to remain looking down slightly longer than normal which can possibly result in an accident. If it is a sunny day with no need for headlights this issue is now exacerbated because the bright sunlight often causes drivers to wear tinted or dark sunglasses rendering the dashboard nearly 100% black. So, my question is a simple one: On the 2017 Toyota Sienna, with the standard feature set included as indicated under VIN - [XXX], should the dashboard lights illuminating the tachometer and speedometer areas turn on immediately and automatically when the vehicle is started? On the vehicle, the dashboard lighting only turn on when the headlights are turned on or set in the auto-headlight mode…both of which are not my choice. I want see my dashboard data automatically and without having to drive with my headlights turned on. This is a poor dashboard visibility standard for this make, model and year Sienna. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

NHTSA ODI 11528241