708 of the
10,828 complaints filed about the Toyota Sienna
are about the electrical system —
7% of everything owners reported.
The worst model year for it is 2004.
power sliding door (behind front passenger) does not fully engage arresting hook and tends to immediately return to open position and after hitting the button again starts welling. It started about eight months ago. Now it isn’t connected at all, I just open or close it and it slides but don’t try to open it first if it’s locked or the alarm blares. I may have pulled or pushed it too many times trying to open or close it so I could drive the car. Looks like others have had the same issue with their driver side passenger door too.
NHTSA complaint #11748961 — an unverified report by a vehicle owner.
Sluggish start when hot - fuel pump leak into engine when hot, causing starter issues, wears out starter, causes other stress on engine. Common issue in Toyota Siennas. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11748426 — an unverified report by a vehicle owner.
Odometer Fraud. The contact purchased a 2011 Toyota Sienna. The contact discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase in 2025, the mileage was 110,000. The contact stated that a Carfax report indicated that the mileage was 300,000.
NHTSA complaint #11744312 — an unverified report by a vehicle owner.
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 mileage discrepancy.
NHTSA complaint #11729714 — an unverified report by a vehicle owner.
Odometer Fraud. The contact purchased a 2014 Toyota Sienna. The contact discovered a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of the purchase, the mileage was 59,500. It was later discovered upon checking the paperwork that the mileage was 176,047.
NHTSA complaint #11727469 — an unverified report by a vehicle owner.
Dear Sir, On April 2026, I need to do the semiannual smog check. Right now, I face DTC P0420 error code and I can't pass the smog check inspection. Note that I don't have the engine light on indicating the a/m error code. Only my OBD2 shows the error DTC Code P0420. I did some searhing and noticed that the ECM for Sienna should be updated to erase the a/m DTC code. I would appreciated to help me how the resolve this issue ASAP. It will enable me to renew my registration.You may contact on my cell phone 747 217 7254 or my email at massey.miri@gmail.com. Regards, Massey
NHTSA complaint #11718059 — an unverified report by a vehicle owner.
The contact owns a 2011 Toyota Sienna. The contact stated that the air bag warning light was intermittently illuminated while driving. The contact stated that the warning light turned off while restarting the vehicle. Additionally, the contact stated that the sliding doors failed to function automatically and required to be opened or closed manually. The contact stated that while attempting to open the front driver's side door in icy and snowy weather, the door made an abnormal cracking sound and failed to open. The contact stated that the passenger's side door made an abnormal cracking sound but opened as intended. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was notified of the failure. The failure mileage was approximately 9,999.
NHTSA complaint #11715483 — an unverified report by a vehicle owner.
In August 2025, AutoNation Toyota on Sahara, checked the VIN of my Toyota Sienna and contacted Toyota while I was present. Toyota confirmed a broken fuel-door hinge was covered under a Customer Support Program. Instead, AutoNation attempted to repair, rather than replace, the hinge. This caused the metal fuel cap door to end up bent, paint to be gouged out from the bottom of the fuel door area, misalignment of the fuel door, and therefore issues with the door’s sensor reading correctly. I took the van back until they received shipment of a new fuel cap door. After the attempted repair, since the fuel door no longer aligned, the safety sensors repeatedly activated which strained the sliding-door ECU. The passenger sliding door began freezing intermittently, forcing my children to exit through the trunk several times. Finally, the door opened on its own as I was driving down the street. These issues did not exist prior to dealership service and presented a clear safety concern. Between October and December, I received conflicting explanations from Gerald, James, Ivan, and Rudy at AutoNation Toyota regarding whether the issue involved the fuel door, ECU, motor, or general wear and tear. AutoNation repeatedly failed to return my calls or respond to the emails I sent them. Toyota Corporate also informed me the dealership was also not responding to their outreach attempts after I contacted them due to not being able to get ahold of AutoNation Toyota. I emailed four managers on October 15 with detailed documentation and received no response. My vehicle remains unsafe, unrepaired, and in the possession of AutoNation Toyota. I approve allowing it to be inspected. While at AutoNation, the vehicle driver could not open the passenger sliding door after AutoNation's attempted repair. They have had my van for 4 months now so no one else has looked at or inspected it. There were no warning lamps, messages or other symptoms of the problem prior to the failure.
NHTSA complaint #11713421 — an unverified report by a vehicle owner.
Odometer Fraud. The contact owned a 2009 Toyota Sienna. The contact discovered a mileage discrepancy after the vehicle was sold. The vehicle was a private sale. At the time of the sale, the vehicle mileage was 253,000. The contact posted the sale on Craigslist, and several days after the sale, the contact noticed that the vehicle was posted back on Craigslist for sale. The contact discovered that the new owner had rolled back the mileage on the odometer to 126,000. The ad on Craigslist was showing the fraudulent mileage.
NHTSA complaint #11709094 — an unverified report by a vehicle owner.
Vehicle: 2011 Toyota Sienna XLE VIN: [XXX] Mileage: ~204,800 Incident Date: [XXX] Recent Service: Oil change, tire rotation, brake inspection, and multipoint inspection performed on November 10, 2025 at Fitzgerald Toyota Gaithersburg (Maryland). Description of the Defect: On [XXX] while driving with my child in the vehicle, my 2011 Toyota Sienna experienced a sudden and dangerous failure. A strong burning smell entered the cabin, the ABS warning light illuminated, and then wheels locked up while the vehicle was in motion. At the same time, the steering wheel locked, making the vehicle impossible to steer. The engine immediately lost power and shut down in the middle of the roadway. The vehicle would not restart and had to be towed. This failure occurred four days after dealership service at Fitzgerald Toyota Gaithersburg, which included an oil change, tire rotation, and brake inspection. The dealership initially claimed the failure was due to a “dead battery,” and the following day changed the explanation to a “shorted alternator.” A weak battery or alternator failure does not explain a mechanical wheel lock or steering wheel lock while driving. The dealership has refused to provide diagnostic documentation or photographs of the components involved. This incident presents a significant safety hazard, and if it had occurred at highway speeds, it could have resulted in a severe crash. I am reporting this to request investigation into a potential safety defect involving the steering system, braking/ABS system, electrical system, or related components. Safety Risk: High. Loss of steering control + wheel lock + engine shutdown presents an immediate crash hazard. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11699835 — an unverified report by a vehicle owner.
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 indicated the past mileage recorded at 287,000. The contact stated that when the vehicle was purchased on November 8, 2025, the odometer was recorded at 98,043. In addition, the mileage recorded on the title was 97,043, and in parentheses, the words “Not Actual” were handwritten.
NHTSA complaint #11698614 — an unverified report by a vehicle owner.
Odometer Fraud. The contact purchased a 2014 Toyota Sienna. The contact stated that upon taking the vehicle to a dealer for an oil change, it was discovered through the Carfax report that there was a mileage discrepancy. The vehicle was a private sale through Facebook Market Place. At the time of purchase, the vehicle mileage was 146,000, but upon retrieving the Carfax report, the contact discovered that the mileage was 187,391 on the State inspection report dated June 18, 2025. The issue had not been reported to another agency.
NHTSA complaint #11698149 — an unverified report by a vehicle owner.
Odometer Fraud. The contact purchased a 2013 Toyota Sienna. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 83,535, and after researching the Carfax Report, the contact discovered that the mileage was 332,216.
NHTSA complaint #11694771 — an unverified report by a vehicle owner.
Odometer Fraud. The contact purchased a 2012 Toyota Sienna. The contact discovered a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 48,230. It was later discovered that the mileage on the Title was 241,080.
NHTSA complaint #11686996 — an unverified report by a vehicle owner.
Odometer Fraud. The contact purchased a 2013 Toyota Sienna. The contact discovered a mileage discrepancy after purchasing the vehicle. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 146,377. It was later discovered that the mileage on the Title was 34,428, but the Carfax mileage was 238,000.
NHTSA complaint #11684584 — an unverified report by a vehicle owner.
Odometer Fraud. The contact purchased a 2013 Toyota Sienna. The contact stated that it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 127,800 and at the time of registration, it was discovered that the mileage was 260,000.
NHTSA complaint #11671989 — an unverified report by a vehicle owner.
Odometer Fraud. The contact purchased a 2018 Toyota Sienna. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 57,000, and at the time of registration, it was discovered that the mileage was 175,152.
NHTSA complaint #11664914 — an unverified report by a vehicle owner.
Odometer Fraud. The contact purchased a 2013 Toyota Sienna. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 100,000 and at the time of checking the insurance, it was discovered that the mileage was 207,000.
NHTSA complaint #11654903 — an unverified report by a vehicle owner.