2010 TOYOTA PRIUS Complaints

Recently, I had ABS failure in my vehicle and warning lights came up on my dash with code C1391 which indicates a problem with brake booster assembly and pump. Now I am afraid to drive it because the brakes seem that they could fail at any time and I cannot break quickly when needed. Toyota is aware there is a problem with the brake booster assembly and pump based on prior Customer Support Programs (my vehicle was not included since warning lights were not present at the time), class action lawsuits, and petitions to NHTS about this issue. I believe the problem is prevalent enough and brakes are significant for driver safety that there should be a safety recall. My vehicle has less than 150,000 miles. I called Toyota to complain about the problem as I know it is very common among Prius owners, but they have said there is nothing they can do.

The contact owns a 2010 Toyota Prius. The contact stated that while driving at an undisclosed speed, the ABS and brake warning lights remained illuminated, and the brake pedal was firm while depressed. The contact stated that the vehicle failed to immediately stop while depressing the brake pedal, causing the stopping distance to be extended. The cause of the failure was not yet determined. The manufacturer and local dealer were not notified of the failure. The failure mileage was 120,000.

The contact owns a 2010 Toyota Prius. The contact stated that while driving at an undisclosed speed, the traction and ABS warning lights illuminated. The contact stated that the brakes were inoperable. The contact stated that he was driving at a low speed and was able to safely stop the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed with a failed brake booster. The contact was informed that the brake booster needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure but did not assist. The failure mileage was approximately 227,000.

While operating the vehicle at normal highway speeds, the car suddenly had the ABS, Traction Control, and Brake lights all come on. The vehicle did not operate or sound any differently at the moment all the lights came on. However, over the next week there developed a mild humming coming from somewhere in the engine bay approximately behind the dashboard. My mechanic identified the problem as the brake booster and pump assembly failing and informed me that the vehicle may drive normally for sometime but the brakes will fail suddenly once the brake booster and pump fully fail. Thus, making operating the vehicle extremely dangerous. I am currently waiting for a Toyota specialty mechanic to become available to replace the brake booster and pump assembly at a cost of +$3,000. Please investigate this issue, there are many people experiencing this issue with the 2010 Prius models.

The contact owns a 2010 Toyota Prius. The contact stated that while driving at 40 MPH, the vehicle consistently made abnormal sounds and jerked forward while the brake pedal was being depressed. The vehicle became inoperable. Several unknown warning lights were illuminated. The vehicle was taken to the dealer to be diagnosed. The contact was informed that the failure was due to a crack and leak in the brake booster. The vehicle had not been repaired. The contact referenced the NHTSA Campaign Number: 13V235000 (Service Brakes). The manufacturer was made aware of the failure and determined that the vehicle was no longer under warranty. The failure mileage was approximately 65,000. The contact stated this is a known manufacturing fail for the brake booster 2010 Prius.

My brakes behave strangely cause i experience inconsistent brake feel after actuation during slow and steady application after brakes on rough or slick surfaces.also, All three lights ABS light,brake light and VSC come on and off on dashboard at the same time.

A couple weeks ago we were driving our 2010 Toyota Prius and 3 brake lights came on: BRAKE, ABS, and a car with squiggly lines behind it. We took the car into the Toyota dealership ($209) to perform a diagnostic. Their results are as follows and I quote: "Hydraulic Brake Booster Pump DTC C1391 Abnormal leak in accumulator. Has T-SB and CSP that are both expired. Recommend perform repair outlined. Recommend R&R Brake Actuator Assy, Booster Pump Assy and perform ABS ECU Reflash. We wouldn't have purchased this car had we known a few years later we'd be facing a $4400 charge Toyota wants to charge. We don't have the funds let alone go now and purchase another car.

Slip indicator symbol, Brake word, Brake symbol, and ABS word lit up while driving. Brake pedal had to be pushed further down to stop the car. No warning lights or issues before this incident. Toyota diagnosed as abnormal leak in accumulator and internal brake fluid leak, and quoted replacement of the brake booster assembly with master cylinder and the brake booster pump. There is no advance indication and the brake booster will not be available while driving. Toyota recalled selected vehicles. There are currently many reports online from vehicles excluded from the recall that are affected by the same brake booster malfunction and warning lights.

The brake booster assembly and brake booster pump have failed due to a vaccine leak internally in the brake booster. Failure of the brake booster can cause the vehicle to be more difficult to stop. Yes the failure codes have been reproduced. The vehicle falls “out of warranty” for a part that should last the life of the vehicle. Replacement of the part is quoted over 4,000 dollars. The abs light, brake light, and traction control lights.

Hi I want submit issues with the master cylinder and abs pump assy I have 2 vehicles same model with average same mileage and both had issues with this system if I drove any distance below 25 mph in a constant time the dash lights comes on traction control, abs light, brake light , and the brake pedal goes low and barely brakes make this situation dangerous when I stop if you try turn it off the engine and on again lights stay there but if I reset the codes the pump works again for some while and then again when you don’t expected lose pressure and I am really afraid for my safety and my family, and I am not the only one with this problem is too many Prius owners who have the issues I went from dealer and they advice $3000 dlls fix situation who motivate people to lose money for $1200 in parts and $1800 dlls in labor for something they can resolve it because in reality is an manufactured defect