I am a 2012 Prius V owner. I have the same issue(traction light, ABS, slip indicator). At first, I took my car to a mechanic near me. They gave me an error code C1391 and told me they could not fix it. They suggested I bring it to the dealership. When I picked up my car, the lights were off. Everything worked fine. I dropped off my car at the dealership and told me an error code was detected (I gave them the exact number). After an hour, they told me the problem was I did not install the floor mat properly and charged me $166. After 5 days, the same problem happened again! So I looked for the information and I just realized it is a manufactural defect.

I am so mad because the dealership did not tell me about this issue which they’ve already known and they still told me everything was fine. I feel it’s ridiculous.

I have a Prius 2013 Persona, just a little over $150K. Over the weekend, the ABS, Brake, Traction lights came on out of nowhere. Took it to local dealership, was told it is a brake booster/cylinder problem. They knew (Toyota and Dealers) something was wrong with the system. However it was not addressed earlier. If Toyota does not cover their known failure; I am not going to spend another dime on Toyota cars. Maybe they do not care about my dollars. I just wanted to share the information so other owners can be aware of this ONGOING issue and stay SAFE on the road.

How can I join the suit?

I purchased my 2013 Toyota Prius that had about 61k miles on it in May 2023 (not knowing anything about the known defective brake boosters and brake pumps on Toyota Prius 2010-2015 and other vehicles) and on 10/22/2023 my vehicle lost brake pressure and (after diagnosing with my OBD II reader) the DTC 1391 presented itself.

I contacted Toyota within 5 days to report the problem and no one at TMC is willing to help since my 10 years or 150,000 miles which ever comes first expired on 5/21/23 and Toyota shows ZERO concern for their consumers and or the safety of the public. The FTC needs to hold Toyota liable for their violations to the Magnuson- Moss Warranty Act and Toyota’s implied warranty on their products, Toyota refuses to recall a defective brake booster and pump but instead chooses profits or people and hides under a guise of caring about creating a positive Toyota experience by voluntarily excluding several unsuspecting customers with a CSB which does not fix or recall the defective parts unless certain DTC codes can be verified by their Dealership’s who generally gaslight and refuse to honor the replacement.

My experience with Toyota is appalling because their Executive Office has zero empathy or understanding. Why isn’t the NHTSA reopening an investigation into this known issue.
Toyota will continue to make defective products until they’re held accountable because planned obsolescence of their parts is a business model for this Japanese manufacturer, who no longer cares about their brand, since they are a multinational corporation who cares more about profits than people. May God deal with their organization.

I purchased a used Toyota Prius 2012 C4 and the brake booster failed after about 5 months of driving. I talked to a Toyota dealership and they told me I was
over the mileage requirement for the free replacement, and there was nothing they could do. The part is extremely expensive. If I drive it as is, the detriment to my safety and others could be at risk. Because the Booster assembly is so expensive I cannot afford the part. Therefore it boils down to what should I do drive it or walk?

2008 highlander hybrid having the same issues also there are 2 prius in my drive way only one has the same issue. They need their socks sued off for the fact that its a known issue and they refuse to correct the problem and produce the same garbage.

Beyond unsafe.