2024 Toyota Prius Prime

Immediately after hard braking to a safe stop the accelerator pedal became unresponsive stranding me in a lane of traffic. I fully released the accelerator then pumped and released it several times. I tried pumping the brakes but nothing restored accelerator function. Finally, I tried shutting the car off then restarting it and that restored normal function for all systems. It was a bit scary and dangerous being stranded in traffic if only for about 1 or 2 minutes. The car was running on battery power and there were about 15 miles of power remaining. I did not see any warning lights or comments on the dashboard during the incident.

NHTSA ID

11775306

Incident

Nov 1, 2026

The design and engineering of this vehicle is defective. All of the vehicles on the road need to be recalled. The outside an inside edges of the tire wear at an extreme rate which will result entire failure, collision, and eventually fatalities. I own two 2024 Prius prime XLE premiums, and I have read online and everyone is having this problem. The torque is so extreme that even the new vehicles cannot maintain alignment. The wheel and tire combination from the factory is simply not suitable for the weight and power of the vehicle.

NHTSA ID

11770608

Incident

Oct 12, 2026

The contact owned a 2024 Toyota Prius Prime. The contact stated that while driving 20 MPH with cruise control engaged, while depressing the brake pedal, the vehicle accelerated. The vehicle crashed into the rear bumper of the vehicle ahead. The air bags deployed and the vehicle was deemed a total loss. The contact was seated in the driver’s seat and sustained injuries to the chest, ankles, knees, neck, shoulders, upper and lower back. Medical attention was provided. The other driver sustained injuries and required medical attention. The vehicle was towed to a tow yard. A Police report was filed. The manufacturer was notified of the failure. The failure mileage was 22,233.

NHTSA ID

11769876

Incident

Oct 6, 2026

Mileage

22,233 mi

I was driving the vehicle at less than 15 miles in Wickham Park on Oct. 1, 2026. As I slowly turned right into a parking lot, the vehicle suddenly picked up speed, and crashed into a big tree near the parking lot. The airbag was activated, and the front end of the vehicle was severely damaged. Luckily, no one was injured from the accident, but this could have caused serous risk to myself and others. I am going to request Toyota to perform investigation to identify a cause of unintended acceleration. My wife also experienced unintended acceleration on the same vehicle on Sept. 29, 2025. When she was trying to slow down the vehicle to park, it suddenly picked up speed and hit a concrete wall in the garage.

NHTSA ID

11768876

Incident

Oct 1, 2026

Incident: On Sept 12, 2026, my 2024 Toyota Prius Prime continued moving forward after I pressed the Park button, causing a collision with my condo garage wall. This was unintended vehicle movement after Park engagement. The vehicle uses a push‑button, shift‑by‑wire Park system, so any electronic malfunction can affect its ability to remain stationary. Recent recall work: Two days before the incident (Sept 10, 2026), Toyota performed recall work on the vehicle. Because the Prius Prime relies heavily on electronic control modules, this timing may be relevant to the malfunction. Same day: The vehicle displayed “No Key Detected” even though the key fob was inside. This may indicate intermittent electronic or communication faults involving the BCM, key‑recognition antennas, or shift‑by‑wire system. Prior to incident: The vehicle abruptly switched from EV to gasoline operation despite having substantial battery charge and under light driving conditions. This behavior is inconsistent with normal Prius Prime operation and may indicate instability in the hybrid control or battery‑management systems. Past electronic malfunction: On March 1, 2024, after service at Toyota of Melbourne, the automatic headlights and driver‑assistance features were not functioning. The service invoice (RO #TOCS730453) documents these issues, showing prior electronic system irregularities. Toyota response: Toyota acknowledged my claim on Sept 15, 2026 and opened Case #260915003140, forwarding it to their field office for review and possible inspection. Request: I am reporting this as a potential safety defect involving unintended movement after Park engagement, recent recall work, and intermittent electronic malfunctions affecting multiple systems.

NHTSA ID

11764918

Incident

Sep 12, 2026

The contact owned a 2024 Toyota Prius Prime PHEV. The contact stated that while driving at 40 MPH, the vehicle was involved in a head-on collision with another vehicle that was traveling towards the contact's vehicle at approximately 50 MPH. The contact stated that during the impact, the steering wheel detached and hit the driver's body. The air bags failed to deploy. There was no warning light illuminated after the crash. The vehicle went into Crash mode and automatically connected with OnStar, which called emergency units. The contact stated that the entire front ends of both vehicles were destroyed. Both vehicles were towed to an impound lot, where they were totaled. The contact's vehicle was deemed a total loss by the insurance company. A police report was filed. There was no property damage. The contact was transported by ambulance to the ER, where he was treated for multiple injuries: fractured ribs, fractured right foot, seat belt injury in the lower abdomen that caused internal bleeding and damage to the stomach, mild concussion, several body bruises and lacerations. Additionally, the contact stated that he was receiving treatment for lower back pain due to a displaced disc. No further information was available. The failure mileage was approximately 35,981.

NHTSA ID

11742384

Incident

Apr 22, 2026

Mileage

35,981 mi

This is a 2024 Toyota Prius prime lease in February 2024. I went to our trusted local car shop for our annual inspection, and was told that we need to replace all four tires and we’re just passed 24,000 miles on our odometer. We are two seniors living in New York State and we only drive on paved roads. We believe this is a failure both of Toyota and Toyota for choosing these tires on this particular model. We were told we need to spend over $1000 to replace tires on a car we do not own. Toyota pointed us in the direction of Toyo, and Toyo pointed us in the direction of Toyota. This is unacceptable and we do not want to pay $1000 for tires that should not be worn out after 24,000 miles with normal driving. We’d like to get some satisfaction on this issue.

NHTSA ID

11723567

Incident

Mar 2, 2026

Although the involved vehicles are within the above production period range, not all vehicles in this range were sold in the U.S. This issue only affects 2023-2026MY Prius and Prius Prime vehicles equipped with electric rear door lock system with a door opener switch manufactured by a specific supplier and during a specific production period. Other Toyota and Lexus vehicles sold in the U.S. are either equipped with a different electric rear door lock system or do not have an electric rear door lock system and do not have the condition described in this report. Unknown. Toyota is unable to provide an estimate of the percentage of vehicles to actually contain the defect. Whether water enters the door opener switch and causes a short circuit that could lead to a door switch activation depends on various conditions, as described further below. However, as the NHTSA manufacturer portal requires an integer value be entered, Toyota has entered the value “1” in response to this question in the portal. For the purpose of this report, “1” means “unknown”.

NHTSA ID

11717240

Incident

Jan 28, 2026

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.

TECHNICAL INSTRUCTIONS FOR SPECIAL SERVICE CAMPAIGN 26TC01 POWER DISTRIBUTION BOX CERTAIN 2024 – 2025 MODEL YEAR PRIUS 2024 MODEL YEAR PRIUS PHV

An electrical connection for the rear window defogger may not have been installed correctly during vehicle assembly. Overtime, this can cause the rear window defogger to become inoperable, which could reduce visibility through the rear window when moisture or condensation is present

OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete.

Some 2005 – 2026 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The purpose of this Service Bulletin is to provide general guidelines and procedures for odor remediation. This Service Bulletin provides a guide on how to prepare and treat the interior of the vehicle for odor remediation. Refer to the applicable model and model year Repair Manual and the EPA (Environmental Protection Agency) website for the most up-to-date safety and precautionary guidelines.

Some ECUs can set a DTC that is common with other ECUs. This can lead to accidental use of the wrong repair manual when diagnosing these type of DTCs.