Toyota Prius Common Problems

UNKNOWN OR OTHER

Owners of the 2019 Toyota Prius frequently report issues related to the coolant system, with multiple complaints describing coolant leaking into the catalytic converter, leading to costly repairs exceeding $2000. These issues typically arise around 70,000 miles, with some owners noting that warning lights do not activate until the coolant is depleted. Additionally, a few complaints highlight rust perforation on the car's roof, potentially affecting airbags and electrical systems, as well as problems with the pedestrian warning sound being inaudible at low speeds. Safety concerns are noted in instances where the vehicle reportedly stalls in the rain or unexpectedly moves forward when in reverse gear, although no crashes or injuries are reported. These patterns suggest prospective buyers should be aware of potential high-cost repairs and safety implications related to these issues.

ELECTRICAL SYSTEM

Owners of the 2022 Toyota Prius report several issues related to the electrical system. Complaints frequently mention problems with the Data Control Unit (DCU) and odometer functionality, with one owner noting a loud screeching noise at startup and another discovering discrepancies in odometer readings, suggesting inoperability. Multiple owners describe sudden, loud noises from the vehicle's speakers causing discomfort and potential hearing damage, with one case involving injuries. Additionally, there are reports of the steering wheel becoming excessively hot, and one instance of unintended acceleration leading to a crash, where the vehicle was unresponsive to braking. These issues occur at various mileages, with some noted as early as 206 miles, highlighting potential safety risks related to vehicle control and occupant comfort.

Severity signals: 1 crash, 0 fire, 3 injury reports

UNKNOWN OR OTHER

Owners of the 2018 Toyota Prius report several issues related to the infotainment and safety systems. Multiple complaints describe the stereo rebooting when connected to a phone for calls or audio playback, occurring within the first weeks of ownership. Additionally, issues with the pre-collision system are noted, with one owner stating it fails to activate in close-call situations, while another describes it engaging unexpectedly, causing a sudden stop. A safety concern is highlighted by an incident where the moonroof explodes, resulting in injury from glass shards. These reports do not specify mileage but suggest potential safety risks and inconvenience for prospective buyers.

Severity signals: 0 crash, 0 fire, 1 injury reports

UNKNOWN OR OTHER

Owners of the 2024 Toyota Prius report issues primarily related to unexpected acceleration and braking, as well as concerns about incomplete key sets and infotainment disruptions. One owner describes a crash occurring during a parking maneuver due to sudden acceleration, while others report the vehicle braking abruptly when reversing. These incidents suggest potential safety implications, including loss of control, although no injuries were reported in the crash. Additionally, owners express frustration with a persistent popup on the infotainment screen that interferes with navigation, and some are concerned about an unresolved recall affecting their confidence in the vehicle's safety. Complaints about missing spare tires also highlight safety concerns, though these are common across many new vehicles.

Severity signals: 1 crash, 0 fire, 0 injury reports

ELECTRICAL SYSTEM

Owners report recurring issues with the 12-volt battery in the 2024 Toyota Prius, which can lead to the vehicle not starting and leaving drivers stranded. Complaints frequently mention that this issue arises even in vehicles with low mileage, such as 7,000 miles, and often occurs without prior warning except for a low battery alert. Multiple owners describe being stranded in potentially hazardous conditions, such as extreme heat, due to the battery failure. Additionally, there are reports of a recall related to the electric rear door lock system, with some owners expressing frustration over delays in remedying the issue. These problems may pose safety risks, particularly in situations where immediate vehicle access or movement is necessary.

VISIBILITY/WIPER

Owners of the 2020 Toyota Prius report issues with windshield and mirror visibility. Several complaints describe the development of frost on the inside of the windshield, requiring 20 minutes or more to defrost, which occurs in various locations and under different weather conditions. Another owner notes a spiderweb crack appearing on the windshield, potentially related to temperature changes. A distinct issue involves the right side mirror glass detaching while driving, posing a safety risk to other motorists. One complaint involves a crash due to a dashboard cover obstructing a sensor, leading to a darkened display screen, although no injuries were reported. These issues typically occur in vehicles with mileage ranging from 8,000 to 12,000 miles.

Severity signals: 1 crash, 0 fire, 0 injury reports

SERVICE BRAKES

Owners of the 2019 Toyota Prius frequently report issues with the braking system, including brake pulsation and rotor corrosion, often around the 11,000 to 20,000-mile range. Symptoms typically include pulsation in the brake pedal, squealing, grinding noises, and visible heat marks or rust on the rotors. Some complaints also describe electronic malfunctions, such as loss of brake boost and various warning lights, which dealers address by replacing components like the brake booster and master cylinder. Safety implications include potential loss of control due to erratic braking behavior and the inability to disable malfunctioning driver-assist systems, as reported by multiple owners. These issues suggest that prospective buyers should thoroughly inspect the braking system and inquire about any previous repairs or updates.

AIR BAGS

Owners of the 2018 Toyota Prius report issues with airbag functionality, with multiple complaints involving airbag warning lights and deployment failures. A common symptom includes the airbag light being illuminated, and in one case, an OBD2 scan revealed a broken wire in the driver's seat belt buckle. Crashes are reported in three instances, with airbags failing to deploy in two significant collisions at speeds of 25-65 mph, resulting in injuries. Another complaint describes airbags deploying prematurely at low speed, causing further accidents and injuries. These issues are reported at mileages around 70,000, highlighting potential safety implications for buyers considering this model.

Severity signals: 3 crash, 0 fire, 4 injury reports