2010 Toyota Prius Complaints

It is a known problem that Priuses manufactured from 2004 to 2015 have issues with the brake master cylinder and brake booster accumulator. When the vehicle computer recognizes an internal leak (ABS C1391) or other issue in the accumulator pump, it completely disables the regenerative braking system, which significantly reduces braking power. In my case, the problem is intermittent, and the vehicle computer will occasionally clear the code and operate normally. A slight whirring sound can still be heard (indicative of an internal leak), leading me to conclude that the part is still damaged, even when the code clears itself. This continues to affect my and my passengers' safety because the problem comes back with no warning while driving. Many times at highway speeds, the regenerative braking system will shut off while decelerating. This has caused scares and near-accidents. Imagine you are approaching stopped traffic while traveling 65 miles per hour. You press the brake to start slowi...

Brakes have failed with a DTC C1391 indicating an accumulator leak. The brake booster pump constantly runs. When the DTC is triggered the brake feel becomes suddenly different as regen braking is lost. Appears to be a very common and expensive repair. Toyota has already had recalls and extended repair program for these parts but they are now expired and not covered.

The contact owns a 2010 Toyota Prius. The contact stated while driving 45 MPH downhill on a mountain and depressing the accelerator pedal, the pedal travelled down to the floorboard, but the vehicle failed to accelerate as intended. The contact pulled over to the side of the road. The contact stated that upon turning off and restarting the vehicle several times, the vehicle responded as needed. The contact stated that the failure recurred after making a turn at 3-4 MPH downhill. The vehicle was not diagnosed or repaired. The dealer and the manufacturer were notified of the failure. The failure mileage was 194,000.

My 2010 Toyota Prius has had a charcoal fuel canister leak since day one. 2.9 million Prius cars were recalled and Toyota says my car is NOT included in the recall but has the same issue of the other Toyota Prius that were included? Check engine light has never gone off. Upon fueling a strong odor of gasoline is detected and I am very worried about the car catching fire. Toyota needs to be held accountable and forced to fix this safety related problem.

A few weeks ago, while waiting at a traffic light, the brake warning lights (ABS, Emergency brake, Traction control) lights on my 2013 Prius lit up and the brake pedal suddenly becomes much less responsive. I drove carefully back home, and researched online what the problem could be. To my surprise, this seems to be a known problem to Toyota, who had issued a campaign in the past to address this problem (ABS actuator, pump) and to replace the known faulty parts for free, but only for owners who were experiencing a failure at that time. Now the recall has expired, and owners like me who weren't having a problem at the time are stuck in a situation with cars that have a known, dangerous fault, while Toyota refuses to help with the problem anymore. The approximate cost for replace/repair is over $4000. All owners should have been included in the previous campaign, whether they were experiencing a failure or not, during that time period since Toyota knew that these parts are faulty.