2026 Toyota Sienna Hybrid problems

Filed Nov 3, 2026 · Fuel system, Transmission · MD

On [XXX], a nearly new 2026 Toyota Sienna XLE AWD with approximately 3,869 miles displayed hybrid-system malfunction, overheating, and check-engine warnings while traveling near Marriottsville, Maryland, at night. The vehicle could not continue safely and had to be towed through Toyota Roadside Assistance, stranding our family and passengers. DARCARS Toyota of Frederick subsequently inspected it and documented multiple punctures and coolant leakage in the inverter radiator on repair order [XXX]. The dealer attributed the punctures to outside influence or road debris, denied factory-warranty coverage, and replaced the inverter radiator and grille. The vehicle remained out of service until [XXX]. I am concerned that the location or protection of this critical hybrid cooling component may leave it vulnerable to ordinary road debris, resulting in coolant loss and sudden interruption of travel. I request review of whether this is a wider safety issue affecting Sienna vehicles. I have repair documentation and can provide it on request. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Nov 3, 2026 · Seats · PA

I am filing this complaint regarding an outstanding safety recall affecting my 2026 Toyota Sienna Limited, purchased in May 2026. The vehicle is subject to an open safety recall for which Toyota has not yet provided an available remedy. I have been advised by Toyota Corporate NOT to use the affected second row seating position due to the safety concern. This is particularly concerning because I purchased a three row minivan specifically to safely transport my family, including my three young children, all of whom require car seats. The second row seating configuration is essential to safely and practically transporting my children. As a result of this unresolved recall, I am unable to safely use a passenger seating position in a vehicle I purchased only months ago. There is currently no repair available, no definitive timeline for a remedy, and no resolution to this significant safety and usability issue. I have contacted Toyota Corporate and opened a case regarding this matter. I am also working with the dealership to address the situation. I am requesting that the federal safety agency review this outstanding safety recall, Toyota’s lack of an available remedy, and the impact on vehicle owners who have been instructed not to use an affected seating position. I am concerned about the safety of my family and believe Toyota needs to provide a timely and effective remedy for this defect as well as a comparable means of transportation in the interim.

Filed Nov 2, 2026 · Body · TX

All of moldings at the doors and passenger side mirror was melted. Dealership didn't help and Toyota brend management will not help us.

Filed Oct 21, 2026 · Seats · IL

The contact owns a 2026 Toyota Sienna Hybrid. The contact received a recall letter for Manufacturer Recall Number: 26TB24/the federal safety agency Campaign Number: (Awaiting). The local dealer was contacted and confirmed that parts were not yet available. The dealer declined to provide a loaner vehicle. The manufacturer was contacted and advised the contact that loaner vehicles were provided at the discretion of the dealer, and no additional assistance was provided.

Filed Oct 13, 2026 · Visibility · OH

"The factory backup camera on my brand-new 2026 Toyota Sienna has a critically low resolution, resulting in a deeply blurry and pixelated image. The video feed is also heavily letterboxed into a tiny box in the middle of the large 12.3-inch screen. This poor quality and tiny layout severely restrict visibility, making it dangerous to spot pedestrians or small kids when backing out of driveways. Toyota Corporate confirmed this is a universal design choice, meaning it is a model-wide defect creating an active safety hazard." Very dangerous, it needs to be updated.

Filed Oct 8, 2026 · Body · AZ

We have been to the dealer 3 separate times for our ac not properly cooling. And also no air flow through out the van. As well as the rear driver passenger door button doesnt open all the time.

Filed Oct 8, 2026 · Visibility · CA

The factory backup camera on my brand-new 2026 Toyota Sienna has a critically low resolution, resulting in a deeply blurry and pixelated image. The video feed is also heavily letterboxed into a tiny box in the middle of the large 12.3-inch screen. This poor quality and tiny layout severely restrict visibility, making it dangerous to spot pedestrians or small kids when backing out of driveways. Toyota Corporate confirmed this is a universal design choice, meaning it is a model-wide defect creating an active safety hazard.

Filed Oct 5, 2026 · Visibility · NC

The factory-installed backup camera on my brand-new 2026 Toyota Sienna XSE has a critically low resolution, resulting in a deeply blurry, fuzzy, and pixelated image. Furthermore, the video feed is heavily letterboxed into a small rectangle in the middle of the large 12.3-inch screen. This poor image quality and tiny layout severely restrict rearward visibility, making it dangerous to spot pedestrians, obstacles, or small children when backing out of driveways. A local Toyota dealership inspected the system and confirmed it is operating 'as designed' by the factory, meaning this is a universal design defect on the vehicle model that creates a significant safety hazard.

Filed Aug 6, 2026 · Visibility · 2,000 miles · MT

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.

Filed Jul 28, 2026 · Visibility · 3,000 miles · TX

The contact owns a 2026 Toyota Sienna. The contact stated that while driving at 35 MPH, an abnormal, shattering sound emitted from the vehicle. The contact immediately pulled over and discovered that the rear window had shattered without incident as glass debris had spread all over the truck of the vehicle. The contact was able to flag down a police officer in the area who assisted the contact with the failure. A police report was not filed as no evidence of a crime or nefarious dealing was discovered. The contact managed to drive the vehicle home to drop off her granddaughters and drove the vehicle to the dealer. The dealer inspected the vehicle and stated that the windshield failure was caused by an unknown impact which the contact disputes. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired and remained in the dealer's possession. The failure mileage was approximately 3,000.