Toyota Sienna Complaints

9,048 consumer complaints on file.

#11760919August 31, 2026
VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR
The drivers side mirror fluters / wobbles / distorts the image such that it is unusable during the day and dangerous at night.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11760949August 31, 2026
STRUCTURE:BODY
Power sliding door on driver side cable snapped. After closing door and trying to use the door without power unable to open or close the door at all. Passengers forced to use alternate door for exit of vehicle.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11760177August 27, 2026
UNKNOWN OR OTHER
On Toyota Sienna XSE 2023 in-cabin rear view mirror gets completely obstructed by the entertainment system LCD screen when opened.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11759958August 27, 2026
AIR BAGS
SRS Airbag Malfunction, visit Dealer warning
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11759695August 26, 2026
VEHICLE SPEED CONTROL, ELECTRICAL SYSTEM, AIR BAGS
While driving my 2025 Toyota Sienna XLE with Sure Grip Push‑Rock electronic hand controls, the acceleration suddenly stops working without warning. When this happens, the hand control will not accelerate at all — only the brake still works — leaving me coasting in traffic with no way to speed up. This has happened multiple times at different speeds and creates an immediate danger because I can only slow down or stop, not accelerate out of the situation. At the same time these acceleration failures occur, the vehicle shows a “SRS Airbag System Malfunction” warning. Toyota’s internal records show the airbag system had faults before I bought the vehicle. The airbag warning and the acceleration failure often appear together, which makes me believe there is an electrical or wiring problem affecting multiple systems. I also discovered that Toyota documented underbody impact damage from a pothole months before I purchased the vehicle. This damage was not disclosed to me, and CARFAX does not show any record of this damage, even though Toyota’s own service history confirms it. The CARFAX report I received states “No accidents or damage reported to CARFAX”. I have owned multiple BraunAbility‑converted vehicles, and all of them have had electrical issues. BraunAbility cuts out the bottom of the vehicle for the lowered‑floor conversion and splices in their own wiring harness, which I believe is causing repeated electrical problems across different vehicles, including this one. Because the acceleration fails, the airbag system shows active faults, and the wiring appears to interfere with the vehicle’s safety systems, I am reporting this as a serious safety hazard.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11759813August 26, 2026
SERVICE BRAKES, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING, FORWARD COLLISION AVOIDANCE: WARNINGS
Three (3) separate systems failed. 1. Upon seeing cars ahead of us slowing down, my husband pressed the breaks to slow down to avoid collision. When he pressed on the breaks, instead of slowing down or stopping the vehicle, the brakes failed to engage, and caused a surge that compelled the vehicle to lurch forward. The lurch propelled our vehicle into collision with another vehicle. 2. Also, the forward collision warning system failed to alert or engage the breaks. Our vehicle was stopped by the impact of hitting the other vehicle, not by its own breaks. 3. The automatic breaking system also failed to engage at all prior to impact.
Crash:
Yes
Fire:
No
Injuries:
0
Deaths:
0
#11759826August 26, 2026
ENGINE
Component Failed & Availability: The engine on my 2015 Toyota Sienna (99,000 miles) catastrophically failed and is completely seized. The vehicle and engine are in my possession and are fully available for physical inspection. Safety Risk: The vehicle shut down completely while in motion, causing an immediate loss of motive power, power steering, and power braking assistance. Had this un-warned seizure occurred at highway speeds rather than a parking lot, the sudden loss of vehicle control would have posed a severe crash hazard. Reproduced/Confirmed: Yes. A certified mechanic removed the serpentine belt, attempted to turn the engine with a lock bar, and confirmed the engine block is completely seized. The local dealership, Fred Haas ToyotaWorld, also confirmed the vehicle does not run. Inspections: The vehicle was inspected by my independent mechanic and the local dealership. However, Toyota Corporate formally refused my request to dispatch a field engineer to inspect the defective engine. Prior Warnings: There were absolutely no warning lamps, check engine lights, temperature spikes, or abnormal noises prior to the failure. The engine seized instantly and without warning.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11759391August 25, 2026
SERVICE BRAKES
When I driving slow and begin to brake the car does not slow down or stop. It feels like I'm hydroplaning.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11759396August 25, 2026
SERVICE BRAKES
While drive I'm approaching my driveway at about 20 MPH i proceed to turn into my drive and the car does stop or slow down it's like I'm on ice (very scary) Toyota says this is common on hybrids it seems to scary to drive
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11759472August 25, 2026
ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER
Odometer Fraud. The contact purchased a 2020 Toyota Sienna. The contact discovered that there was a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 88,044. It was later discovered upon checking with the local DMV that the mileage was 288,044.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11759229August 24, 2026
ELECTRICAL SYSTEM, BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING, LANE DEPARTURE: BLIND SPOT DETECTION
I own a 2022 Toyota Sienna with approximately 67,680 miles. The vehicle began displaying warnings for **Blind Spot Monitor Malfunction, Rear Cross Traffic Alert Malfunction, and Parking Support Brake Unavailable**. A Toyota dealer diagnosed the problem and found significant corrosion at **both rear blind spot monitor connections**. The wiring harness connector pins had corroded/broken off inside the blind spot monitor sensors. The dealer recommends replacing both blind spot monitors and the rear bumper wiring harness and recalibrating the system. The estimated repair cost is **$3,945.84**. I am concerned that both sides of this safety-related system experienced severe corrosion on a vehicle that is less than five years old. These components are not scheduled maintenance or wear items. I have also found reports of other 2021–2022 Toyota Sienna owners experiencing blind spot monitoring failures involving corrosion of the rear sensor/connectors, including another 2022 Sienna at approximately 65,000 miles. Toyota's Brand Engagement Center has documented my complaint but declined to review the repair for goodwill assistance because the vehicle is outside the basic warranty and has not been serviced exclusively at Toyota dealerships. I am filing this complaint because the corrosion simultaneously disables multiple driver-assistance/safety functions and appears unusually premature. I believe NHTSA should investigate whether corrosion or inadequate protection of the rear blind spot monitor connections is affecting other 2021–2024 Toyota Siennas.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11758562August 21, 2026
LATCHES/LOCKS/LINKAGES:DOORS:LATCH
The contact owns a 2008 Toyota Sienna. The contact stated that while driving at an undisclosed speed, the rear passenger’s side sliding door independently unlatched and opened. The vehicle was taken to a local dealer where unknown repairs were performed. The contact stated that several years later the failure reoccurred. The local dealer was not contacted. The manufacturer was not made aware of the failure. The failure mileage was approximately 20,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11757932August 19, 2026
SERVICE BRAKES
When apply the brake, the car will have sudden forward pushing.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11757786August 18, 2026
LATCHES/LOCKS/LINKAGES:HATCHBACK/LIFTGATE:LOCK
The contact owns a 2024 Toyota Sienna Hybrid. The contact stated that while driving at an undisclosed speed, the hatchback independently opened. No warning lights were illuminated. The vehicle was taken to a dealer where it was diagnosed and determined that the hatchback needed to be recalibrated. The vehicle was repaired; however, the failure persisted. The vehicle was taken back to the dealer where it was diagnosed and determined that the hatchback needed to be recalibrated. The vehicle was repaired; however, the failure persisted. The vehicle was taken back to the dealer again and was diagnosed and determined that the hatchback needed to be recalibrated. The vehicle was repaired; however, the failure persisted. The manufacturer was notified of the failure. The failure mileage was approximately 15,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11757095August 15, 2026
UNKNOWN OR OTHER
The authorized Toyota dealership has declined warranty coverage for the air conditioning system. The unit exhibits intermittent cycling between warm and cold airflow on the highway. Although the control panel indicates a minimum temperature of 60°F, performance remains inconsistent; the temperature gauge reads 67°F.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11757097August 15, 2026
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
The authorized Toyota dealership has declined warranty coverage for the air conditioning system. The unit exhibits intermittent cycling between warm and cold airflow on the highway. Although the control panel indicates a minimum temperature of 60°F, performance remains inconsistent; the temperature gauge reads 67°F.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11756646August 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; however, the recall repairs were denied due to the 2nd row seats being converted for wheelchair accessibility. 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
#11756259August 11, 2026
SEAT BELTS
Seatbelt intermittently would latch since purchasing vehicle, and then completely failed and will no longer latch/clip in. This is 3rd row passenger side.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11755824August 10, 2026
UNKNOWN OR OTHER
AC light blinking AC condenser replacement twice in 2 years
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11755212August 6, 2026
VISIBILITY:SUN/MOON ROOF ASSEMBLY
The contact owns a 2026 Toyota Sienna Hybrid. The contact stated that while the vehicle was occupied and parked in the driveway, the sunroof exploded outward without impact. The sunroof shade was closed during the failure. There was no reported injury. The vehicle was taken to a dealer, where the contact was informed that a similar failure was previously reported; however, the failure was not covered under warranty. The vehicle was not diagnosed or repaired. The dealer referred the contact to the manufacturer, who then referred the contact to the sunroof glass manufacturer for assistance. The sunroof glass manufacturer informed the contact that the vehicle manufacturer was responsible for the repair because the sunroof glass was installed on the vehicle. The failure mileage was approximately 2,000. The VIN was unavailable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to Toyota Sienna