2026 Toyota Sienna Hybrid

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)

NHTSA ID

11775479

Incident

Oct 16, 2026

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 NHTSA 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.

NHTSA ID

11775337

Incident

Oct 20, 2026

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

NHTSA ID

11775231

Incident

Oct 1, 2026

The contact owns a 2026 Toyota Sienna Hybrid. The contact received a recall letter for Manufacturer Recall Number: 26TB24/NHTSA 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.

NHTSA ID

11772707

Incident

Oct 21, 2026

"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.

NHTSA ID

11770909

Incident

Aug 8, 2026

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.

NHTSA ID

11769908

Incident

Jul 10, 2026

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.

NHTSA ID

11769787

Incident

Sep 10, 2026

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.

NHTSA ID

11769045

Incident

Sep 10, 2026

Some 2025 – 2026 model year Crown, Crown Signia, RAV4 Hybrid, and Sienna Hybrid vehicles with an A25A engine may experience a MIL ON with Diagnostic Trouble Code (DTC) P145011 (Fuel Tank Pressure Sensor Circuit Short to Ground). This condition is more prevalent when the ambient temperature is 15°F or lower. To correct this condition, an improvement was made to the Fuel Tank Vent Valve.

Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Global Techstream+ (GTS+) ECU flash reprogramming procedures and outlines use of the Technical Information System (TIS) and the Calibration Update Wizard+ (CUW+). To ensure the correct ECU software is installed, ECUs will require a Security Signature before the ECU will initialize the flash reprogramming sequence. This bulletin also details the process for acquiring a Security Signature from TIS during the GTS+ ECU flash reprogramming process.

This bulletin includes basic procedures for performing a rescue charge at battery on high voltage (HV) Ni-MH and Li-ion batteries.

2026 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat in the correct position. In addition, some models may also utilize retainers for passenger side and rear seat floor mats. During Pre-Delivery Service (PDS), follow the appropriate Installation Procedure to attach the driver side, and if applicable, the passenger side and rear seatfloor mats to the vehicle carpet using the floor mat retainers.

During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. If the wheels are replaced or refinished before vehicle delivery, it is important that the tires remain on the vehicle in the same location and in the same direction of rotation.

Long-term or off-site storage requires special care to maintain vehicle condition. The following guidelines should be performed to minimize vehicle component/part degradation due to extendedvehicle storage conditions. Long-term storage can affect a vehicle’s systems and components. Any problems that are found should be corrected immediately.