2011 Toyota Prius

Our Prius started showing brake issues in June 2021 that has us concerned about safety. The car lurches when the brakes are pressed, and the brake functions inconsistently. This seems to fall under the “brake booster pump assembly with master cylinder” issue that many others have complained about. When we called Toyota, they said a letter was issued in April 2019, but when we took the car in for diagnostics in August 2019, the brake issue (diagnostic code) didn’t appear then. So they said they won’t fix the hazardous defect. Even more troublesome is the fact that this issue has caused crashes and injuries in the past, and Toyota hasn’t issued a recall. Please help consumers hold Toyota accountable for putting their customers in harm’s way.

My daughter was driving the vehicle on highway and all dashboard lights came on. Abs brake and traction. The brakes would not work. She had to decelerate and pull off and turn car off. Terrifying. Got it checked at Toyota. Told them about that and how car lunges forward when brakes hit on a bump or pothole. We had to pay 2500 to replace brake booster which had an “internal error”. Got car back and all lights came back on. I’m literally terrified to drive my car because of what may happen. Toyota refuses to recall and fix whatever this issue is.

I have a 2011 Prius it has no warning light in the dashboard but the brake was causing me problems when I stopped the car almost causing me to crash so I had it inspected by a mechanic and got a FIXD sensor both are telling me it’s the brake actuator( code c1391) I could of been seriously hurt and I drive my toddler and I to and from places.

I was driving my vehicle through a state park, on a mountainous road that’s curvy and hilly. I was going about 35-40mph up a hill. As I was accelerating up this hill, my cars break light notifications all went off. 3 of them; stability control, ABS and one other. When I got to the top of the hill, I had to go back down a hill. I tried hitting the brakes and they were extremely weak. I could barely slow down or stop safely. I knew I had about 5 more minutes of driving left through this park so I went 5 miles an hour to not run into trees or slide off the road around a curve. I immediately got to a parking lot and called for a tow truck to take my vehicle to the dealership. When it was dropped off I received a phone call from the dealership saying my brake actuator had gone out. It will be $2,655 to fix… the part? $2000. Apparently there was an extended warrantee on this part. That ended on 12/31/2021 or 150,000 miles. My incident happened on 1/26/22 (less than 4 weeks later) with 153,059 miles on my vehicle. I contacted Toyota Corporate and was told they couldn’t do anything about it. I was given a ticket number of 220127001781. I told them I never received a notification and begged for mercy on this part. I told them my phone number and email had never changed since buying the vehicle. I called another mechanic and was advised that there were 44 people on the waitlist for this exact part. I’m only 26 days and 3,059 miles over each warrantee and they’re refusing to help for a $2,000 part that is CLEARLY a safety problem for this vehicle.

It's the exact issue from the ZJB customer support program. The brake booster is faulty. All the brake warning lights came on all at once. A few weeks ago the brakes were starting to make a noise so I brought it to the Toyota dealer and also called Toyota customer care. The dealer ran a diagnostic and said the booster needed to be replaced but Toyota customer care wouldn't cover the $3500 fix because the customer support program ended on Aug 31 2021. The extension of the ZJB program covered 10years or 150,000 miles. Even though my Prius is a 2011 and got the diagnostic done in 2021, they said I was technically past the 10 year mark because evidently my Prius was initially purchased in September of 2011 and I had the problem diagnosed in Dec of 2021. Three months late. I've spend hours on the phone with Toyota pleading my case and they have been of no help. They know this is a problem. There's a class action lawsuit. There's been petitions. This issue needs to be recalled.

My husband and I bought a 2011 Toyota Prius 7 months ago. It was a one owner car in excellent condition with unusually low miles. The last two times we've had the dealership service it we've asked about a noise that the brakes were making. Both times we were told the brakes were fine and didn't need any service. Two days ago the ABS light came on. We immediately took it to the dealership. Yesterday we were told that the brake booster and actuator have gone out in the car. Turns out that Toyota issued an extended warranty for this exact repair to be done due to a manufacturers defect with the parts. It was for 10 years or 150K miles. It expired in October. My car has less than 90K miles on it! Now I have to pay $2800 to repair a manufacturers defect because Toyota refuses to fix it now. This is a known safety issue. They are doing everything they can to save money and avoid a recall. This is NOT good business. There is currently a class action lawsuit that has been filed against Toyota for this very issue. Toyota refuses to recall the product and does everything in it's power to not fix the issue. People have already been injured due to this issue. They even tell the dealerships not to fix the issue under the warranty unless the car spits out a particular code - no matter the issue someone is having with their braking system. A quick Google search will yield many testimonies from others who are part of this lawsuit who are experiencing the same issues. This is a known safety hazard due to a manufacturers defect that Toyota has known about for years. This is not a new issue and it effects several types of vehicles made by Toyota. I have made many phone calls to customer service and been told several times by different people now that this is no longer their problem. Toyota refuses to step up to the plate and fix this issue in these cars. This is not just in the Prius. They have made it abundantly clear that they DO NOT care about the safety of their consumers!

The contact owns a 2011 Toyota Prius. The contact stated that while driving at 60 MPH, the brake pedal was depressed but hesitated to respond. The contact did not recall the number of feet in stopping distance delay. The ABS warning light, traction control warning light, tire pressure warning light, and an unknown warning light were illuminated. The Brake message was displayed. The vehicle was taken to the dealer who diagnosed that the brake booster and the brake booster pump needed to be replaced. The manufacturer was notified of the failure and advised the contact that the failure was a known failure however, the extended warranty had expired. The vehicle was not repaired. The approximate failure mileage was 139,000.

While driving on a freeway in December 10th 2021, the ABS, Brakes and Tire pressure sensor lighted up and suddenly the brakes felt stiffed and the car did not respond as usual. Luckily I was able to move to the side, stop and make sense of what just happened. I went straight to a mechanic and got the diagnose C1391. He share the bad news, the cost to fix it would run over $2000. After further research, I found out this is an ongoing issue with many Prius specially 2011. It appears there was a customer support program related to this issue that I never heard of. Now I do, but it is too late. It will cost me serious money to fix it. This is a safety issue that can not be ignored. Toyota should be made responsible to fix it. Either they do it voluntarily or some of the owners may have no choice but to take this issue to court. It is my understanding there are some law suits filed already. We need this issue to became a recall, before someone gets hurt. I will have to consult with an attorney.

While driving a 2011 Toyota Prius, 3 dashboard lights (ABS, Brake, and yellow) all lite up at once, making braking difficult. My daughter almost rear-ended the car in front of her. When taken to the dealership, my car had an error of C1391. There was a customer support program from Toyota "ZJB" with this exact diagnosis of issues with the brake booster, which I was never notified nor was it listed on their website. They refused to fix it as it had expired. My car has less than 100,000 miles even though their recall listed up to 150,000 miles. I've attached the Toyota dealership diagnosis and repair cost of $2969.99 which I can not afford. I'm assuming that now traction control and anti-lock braking are now non-operational making this car dangerous to drive, especially for my daughter.