2017 TOYOTA SIENNA Engine Problems

Subject: Safety Defect Complaint – 2017 Toyota Sienna (VIN: [XXX] ) Dear NHTSA Safety Division, I am submitting a safety complaint regarding my 2017 Toyota Sienna, VIN [XXX] . In June 2023, while traveling on I-81 South in Virginia with my family of seven, the van stalled suddenly and emitted white smoke from under the hood, then the engine completely failed. The vehicle had only 111,000 miles. The repair would have cost $15,000, and I had to sell the van in 2024 for $4,000, suffering significant financial loss. Toyota informed me no recall applies to my VIN, although many 2017 Siennas experienced fuel pump failures causing stalling. As a person with disability and serious health issues, this incident caused extreme stress, hardship, and risk to my family. I request that NHTSA investigate this potential safety defect to determine whether other 2017 Siennas are affected. Sincerely, Your Name Phone Number Address INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2017 Toyota Sienna. The contact stated that occasionally while driving approximately 35 MPH, the vehicle lost automotive power before jolting forward. There was an unknown warning light illuminated. In addition, the contact stated that the failure had progressed over time. The vehicle was taken to a local independent mechanic; however, the cause of the failure was unknown. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 69,000.

Mileage: 69,000

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.

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.

Today 4/7/23 My 2017 Toyota Sienna accelerated on its own. I was driving my 4 children to school and we were at a stop light. When I took my foot of the brake to start making a turn the car gunned it around the corner. It scared everyone in the car half to death. Thankfully no one was hurt but it looks like others on here haven't been so lucky with this issue. I hope toyota does the right thing a d fixes this issue before more people die.

Engine stalls and stutters. Check AWD light comes on dashboard

I was driving my 2017 Sienna on 5/10/2022 and was approaching a roundabout. As I was going thru the roundabout, my van stalled. I coasted into a gas station. After a few minutes I notice smoke coming from under my hood. I popped the hood and noticed the smoke was coming from the air intake. We called AAA and they towed it to the dealership we bought it new from and had all services done at. The next day we authorized them to do a diognostic on it where they found a burnt airfilter and melted housing. Heiser Toyota in Milwaukee WI has not repaired the van yet and we wanted to talk to Toyota customer service and your office to see what we should do. We called insurance and a claim has been started - not sure if they have inspected the van yet. It is available for you to inspect. All warning lights were on when it stalled. There was no power loss or any warning before it stalled.

On 10/14/2021, as my wife was pulling into our attached garage, the vehicle suddenly accelerated, hitting a metal storage shelf located at the back wall of the garage. The impact of the crash caused the vehicle and the shelf to extensively damage the dry wall of that area of the garage, as well as to damage the pedestal supporting the house water heater, which resulted in the water heater detaching away from the wall and being destroyed. There was, of course, also major damage to the front bumper area of the vehicle. It is my contention that the cause of the accident lies in some component of the vehicle acceleration system. I believe this to be true because of two prior incidents which occurred within the month before this happened. On 09/16/2021, I was driving this vehicle and wanted to make a U-turn. I was traveling at approximately 10 MPH, but as I began the turn, suddenly, the vehicle accelerated to about 25 MPH, even though my foot was off the accelerator. My wife and granddaughter were in the vehicle at the time and both expressed alarm, somehow thinking I had purposely made this maneuver, which I assured them that I had not. Then, approximately 7-10 days later (I am unsure of the date), I was driving, alone, in this vehicle and went to make a left-hand turn. The vehicle again accelerated, even though I had removed my foot from the accelerator pedal and was applying the brakes. I estimate that as I began the turn, my speed was 10-15 MPH, but the vehicle accelerated to 25-30 MPH. I dismissed both of these prior incidents as not too important and attributed them to some unknown anomaly on the road. However, after the latest incident involving the damage to my garage and vehicle, research showed that several Toyota models and specifically the Sienna have had similar issues in the past. I am reporting this incident to Toyota for their evaluation, but wanted to make your agency aware, also.

Vehicle began running harshly, then stalled. Check engine light came on. Upon inspection at Toyota dealership, found to have leaked fuel into charcoal canister. Vehicle owner does NOT overfill gas tank.

TL* THE CONTACT OWNS A 2017 TOYOTA SIENNA. WHILE DRIVING 35 MPH, THE CONTACT HEARD A POPPING SOUND COMING FROM THE ENGINE. SIMULTANEOUSLY, ALL OF THE WARNING INDICATORS ILLUMINATED AND SMOKE APPEARED FROM THE HOOD OF THE VEHICLE. THE VEHICLE IMMEDIATELY SHUT OFF AND WAS TOWED TO AN INDEPENDENT MECHANIC WHERE THE WATER PUMP WAS REPAIRED; HOWEVER, THE FAILURE WAS NOT CORRECTED. THE CONTACT SPOKE WITH THE TOYOTA MANUFACTURER WHO ADVISED HIM TO TAKE THE VEHICLE TO A LOCAL TOYOTA DEALER. THE VEHICLE WAS TOWED TO HILLSIDE TOYOTA (139-65 QUEENS BLVD, JAMAICA, NY 11435, (718) 521-4554) WHERE IT WAS DIAGNOSED THAT THERE WAS MASSIVE ENGINE FAILURE. THE CONTACT AGREED TO HAVE THE VEHICLE REPAIRED AND THE DEALER KEPT IT FOR NEARLY A MONTH. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 67,000.

Mileage: 67,000

ISSUE STARTED AT ABOUT 4100 MILES. THE VAN WOULD NOT START AT ALL. THE PUSH BUTTON WOULD ACT AS OF THE VAN WOULD START BUT NOTHING WOULD HAPPEN. AFTER TRYING 5 PLUS TIMES IT STARTED. TOOK THE VAN TO THE DEALER THAT STATED EVERYTHING LOOKED GOOD. NOW ABOUT TWO WEEKS AGO THE SAME ISSUE OCCURED. THE VAN WOULD DISPLAY CHECK CHARGING SYSTEM ON THE DISPLAY AND THE VAN WOULD NOT START NO WOULD THE SIDE DOORS OPEN IN ORDER FOR ME TO GET MY INFANT'S OUT OF THE VAN. AFTER MULTIPLE ATTEMPTS THE VAN GOING AGAIN IT STARTED AND I WAS ON MY WAY. CONTACT TOYOTA TO INFORM THEM AND SO FAR THEY HAVE NOT CONTACTED ME BACK AS WELL AS THE DEALER.

Mileage: 12,045

THE VAN IS BURNING OIL. TOYOTA DID AN OIL CONSUMPTION TEST AND IT IS CONFIRMED TO BE BURNING OIL. THEY ARE NOT BEING HELPFUL IN HELPING ME OUT....

HUSBAND LOST CONTROL OF THE CAR DRIVING 75 MILED PER HOUR ON HIGHWAY. "AWD BRAKE OVERRIDE. CONTACT DEALERSHIP" CAME ON A GAUGE. PULLED OFF SIDE OF I-95 AND CAR SHOOK AND CAME TO A COMPLETE HAULT AFTER MAKING A LOUD GRINDING NOISE. WE IMMEDIATLEY NOTICED FIRE COMING FROM UNDER THE HOOD ON DRIVER SIDE. EVACUATED, CALLED 911. CAR WAS A TOTAL LOSS. PLEASE GET TOYOTA TO INVESTIGATE SINCE THIS IS NOT THE FIRST 2017 TOYOTA SIENNA TO CATCH ON FIRE IN THE SAME MANNER.

Mileage: 21,800

I WAS DRIVING ON THE INTERSTATE AT APPROXIMATELY 65 MILES PER HOUR. MY 'CHECK ALL WHEEL DRIVE SYSTEM' WARNING ALARM CAME ON SHORTLY FOLLOWED BY THE: CHECK ENGINE, BATTERY ALARM, COLLISION BREAKING SYSTEM, ETC. I'M CERTAIN THERE WERE MORE ALERTS GOING OFF; HOWEVER I WAS TRYING TO STEER A CAR, THAT HAD LOST POWER OFF THE ROADWAY. I WAS ABLE TO GET THE CAR SAFELY ONTO THE SHOULDER WHERE I ATTEMPTED TO TURN OFF THE VEHICLE. I COULDN'T TURN THE CAR OFF UNTIL I REALIZED I NEEDED THE CAR TO BE IN PARK. AFTER I TURNED THE CAR OFF I NOTICED BLACK SMOKE COMING FROM THE ENGINE AND COULD SMELL SOMETHING BURNING. I OPENED THE DOOR & GOT MY THREE YEAR OLD SON OUT OF THE CAR & NOTICED MORE BLACK SMOKE. I QUICKLY DISTANCED MYSELF FROM THE VEHICLE & NOTICED FIRE COMING FROM THE ENGINE. I CALLED 911 BUT THE CAR WAS ENGULFED IN FLAMES WITHIN MINUTES. THE FIRE DEPARTMENT RESPONDED WITHIN 5 MINUTES & WERE ABLE TO EXTINGUISH THE FIRE. *JS

Mileage: 13,700