Toyota Sienna Complaints

9,048 consumer complaints on file.

#11718664February 17, 2026
POWER TRAIN
The transmission started making a whining sound. There is a Toyota customer support bulletin pol19-04 that mentions this issue however the dealer says this car is not covered
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718192February 16, 2026
SEATS, STRUCTURE:BODY
Toyota issued a recall due to suspected second row seat welds failing in a crash in October 7, 2025 and has not offered a remedy. The suggestion of not having anyone sit in the second row for over four months now is absurd and warrants investigation. The customers who purchase vans do so due to needing the space to occupy 5+ passengers and are not able to have all passengers sit in the third row putting passengers at risk daily without a solution. This is complete negligence by the company.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718230February 16, 2026
SEATS
Unresolved recall for second row seats in a MINIVAN that has to transport small children in car seats. Using the seats will put them at risk. Using third row is inconvenient. Keeping van on dealer lot for months on end will be bad for battery, etc. No timeline for repair. The reason we purchased the vehicle is unusable and a major safety concern.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718059February 15, 2026
ELECTRICAL SYSTEM
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 [email protected]. Regards, Massey
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717848February 13, 2026
SEATS
Improper welds on second-row seat rails... We purchased a brand new 2025 Sienna, as we have three small children in car seats, and the minivan is convenient. I used the 2nd row for 2 of the car seats. I have contacted all of the Toyota dealerships within an hour of our house, and they either don't offer service rentals for recalls, don't have anything suitable available, don't have rentals at all, or don't return messages left inquiring about rentals. I spoke with Toyota customer care last week (Feb. 2, 2026) and they had no update on a fix or timeline, and this has been going on since October 2025. This is the 2nd Toyota we have had in 3 years, and both have had recalls. I am disappointed in Toyota, not as reliable as they claim, I guess.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717882February 13, 2026
SEATS
The contact owns a 2025 Toyota Sienna Hybrid. The contact received notification of NHTSA Campaign Number: 25V668000 (SEATS); however, the part to do the recall repair was unavailable. The local dealer was contacted, and it was confirmed that the part was not available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact stated that the driver’s and passenger’s side second-row seats were vibrating abnormally while driving. The vehicle was not repaired. The failure mileage was 200.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717925February 13, 2026
SEATS
The contact owns a 2025 Toyota Sienna Hybrid. The contact received notification of NHTSA Campaign Number: 25V668000 (Seats); however, the part to do the recall repair was not yet available. The local dealer was contacted and confirmed that the part was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717932February 13, 2026
SEATS
I am the owner of a 2025 Toyota Sienna currently grounded at an authorized dealership due to safety recall NHTSA #25V668 (improperly welded 2nd-row seat rails) and I suspect NHTSA #25V099 (3rd-row seat back bolts) also may apply (but has not been tested). As of today, the vehicle has been out of service for nearly 60 consecutive days. The dealer confirmed the defects but stated that no remedy is available and no timeline for repair has been provided by the manufacturer. This defect poses an extreme safety risk. I have an infant in a car seat; Toyota’s interim guidance (which prohibits use of the 2nd row) makes it impossible to safely transport my child. Using the 3rd row is not a viable or safe alternative for an infant in a rear-facing seat. Toyota has failed to provide a remedy within a "reasonable time" per 49 U.S.C. § 30120. Under California’s Song-Beverly Act, the 30-day "out of service" threshold has been exceeded. Because the manufacturer cannot fulfill its warranty and safety obligations, I am formally seeking a vehicle replacement (Substitution of Collateral).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717551February 12, 2026
SEATS
The contact owns a 2025 Toyota Sienna Hybrid. The contact received notification of NHTSA Campaign Number: 25V668000 (Seats); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717553February 12, 2026
ENGINE
My 2024 toyota sienna suddenly stopped for 2-3 seconds while driving in the city roads. I was caught off-guard with that behavior. I kept pushing on my gas pedal and after few hard pumps the power came back. This happened couple of times so far. Not sure what the main problem is.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717639February 12, 2026
AIR BAGS
The vehicle experienced water intrusion into the interior cabin shortly after delivery in 2023. The water intrusion affected electrical components related to the airbag and Supplemental Restraint System (SRS). The vehicle remains in my possession and is available for inspection upon request. Moisture exposure to airbag and SRS components presents a serious safety risk because these federally regulated systems may fail to deploy, deploy improperly, or deploy unexpectedly in the event of a collision, increasing the risk of injury or death. The issue was reported multiple times to authorized Toyota dealerships while the vehicle was under factory warranty, and repair attempts were made; however, the water intrusion and related safety concerns were not resolved. The manufacturer and its authorized dealers were made aware of the defect through repeated service visits and customer complaints. Warning indicators related to the airbag/SRS system appeared after the water intrusion occurred, and the defect first manifested within weeks of vehicle delivery in 2023.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717668February 12, 2026
SEATS, BACK OVER PREVENTION
The contact owns a 2025 Toyota Sienna Hybrid. The contact received notifications of NHTSA Campaign Numbers: 25V744000 (Back Over Prevention) and 25V668000 (Seats); however, the parts to do the recall repairs were not yet available. The dealer was contacted and confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repairs. The manufacturer was made aware of the issue. The contact had not experienced a failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717297February 11, 2026
SEATS
The contact owns a 2025 Toyota Sienna Hybrid. The contact received notification of NHTSA Campaign Number: 25V668000 (Seats); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717402February 11, 2026
SERVICE BRAKES, POWER TRAIN, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
The car jerks when coming to a stop. Like when the regenerative system is disengaged it jerks. For the Adaptive cruise control the car will accelerate instead of braking when another car merges in front of you.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717002February 10, 2026
SEATS
Toyota became aware of the problem with the middle row of seats in October 2025. We were not alerted until December 2025. It is now February 2026 and there is still no resolution in sight. I did not buy a minivan to be stuck being unable to use half of my seats and Toyota is taking too long to resolve this issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716772February 9, 2026
SEATS
We purchased a brand new 2025 Toyota Sienna at the end of May 2025 and received a recall letter in December 2025 stating the 2nd row seats may have been improperly welded in could result in serious bodily injury in a crash. We bought this vehicle for our family of 5 and have had 2 car seats in the 2nd row. Toyota advices NOT to use the 2nd row until a remedy is implemented, so the car is now unusable for us. The car has been at our local dealership since we received notice in December and we have had NO word on a solution. Toyota has known about this issue since October 2025. We're approaching 2 months without use of the vehicle we purchased and Toyota is approaching 4 months since the fault was discovered with no remedy to show for it.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716624February 9, 2026
SEATS
Recall is not being addressed in a timely manner.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716122February 6, 2026
AIR BAGS
When purchased "As Is", an airbag deployment was disclosed but not that the front passenger side airbag had not been replaced. In December of 2025, an SRS Airbag warning appeared. Upon inspection, the mechanic discovered a "resistor" had been inserted in the SRS cirucuity to avoid disclosure of the absence of a replacement airbag. The replacement airbag was installed at my cost of $1,578.09 +8% Ohio Sales Tax. I contacted the selling dealer, Toyota of Bedford (OH), in early January 2026 but have not received a response. The other dealer disclosed in the Carfax (likely responsible for the omission of the airbag when the vehicle was repaired in July of 2022) is Suburban Toyota of Troy, MI.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716185February 6, 2026
ENGINE
i am having repeated issue with Toyota sienna engine 1. Engine oil leaks through timing chain cover 2. Engine coolant leak Engine oil leak keep repating even I fixed earlier and leaks again due poor engine design same issue fixed on Nov/22/20 - 59k
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716274February 6, 2026
SEATS
The second row seats where my children are seated are deemed unsafe and therefore unusable by Toyota. My vehicle has been out of service since October 17, 2025 due to a safety recall. The manufacturer has not provided a repair within a reasonable time. I have been placed in a rental vehicle that is not comparable, and the prolonged delay has caused ongoing financial harm. The manufacturer has acknowledged the unreasonable delay but has verbally denied compensation for losses related to the recall and has refused to document that denial in writing. I am concerned that this represents a failure to provide a timely and reasonable remedy for a known safety defect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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