I was driving on a surface street at about 40 miles an hour and then the brakes suddenly don't work. You have to press on the brakes very hard to make them stop. All the safety warning lights were lit up on the dash. Took the car into the Toyota dealership and they said that there was a brake booster and pump customer support program but it's now expired so they won't fix it for free. The brake booster part is about $2000. I contacted Toyota Customer Service and asked them when they sent the notices out for this. They looked up our vin number and said that the notice was sent to the previous owner, since we bought the vehicle used from a Toyota dealer. Spoke to a Toyota supervisor from customer service and told them we never were notified to fix the brake booster. The supervisor said they will not pay for the repair. I think this should be a safety recall and Toyota needs to repair these parts. It's very dangerous to drive the car when the brakes fail to stop.
2011 Toyota Prius brakes complaints
Page 3 of 10: complaints 41 to 70 of 278, newest first, as owners wrote them.
Brake booster has failed. I'm told this is a known issue but no recall has been issued
To whom it may consern, I avoided a situation that could have been a very serious or deadly accident when my vehicle had unusual issue with the vehicle breaking system while driving on the freeway today [XXX]. The vehicle would not stop while pressing on the break pedal and I was able to quickly maneuver the vehicle on the shoulder of the freeway and was able to avoid a deadly crash. Looked on the dash and noticed that ABS, Break, and Traction Control lights all lit up. I was scared for my life and the safety of others around me. The vehicle was towed to my residence since it happened around 10:30pm California time. Quickly did some researched online for any recall on website but unsuccessful with any recall regarding the breaking system. I also found out that it is a common problem that other owners have been/experienced with the same vehicle year, make and model. I would greatly appreciate for any information I can gather in order to assist me on how I can get Toyota to look into this issue for the safety of myself and others. It was a very scary scenario that could have been a tragic one that I found myself into. Looking for a prompt response to address this issue. Thank you! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Symptoms: The vehicle exhibits a constant and repetitive noise when the brake pedal is pressed. Additionally, multiple warning lights are illuminated on the dashboard, including the red brake light, yellow ABS light, yellow traction control light, and tire pressure light. Suspected Cause: The issue appears to be related to the brake actuator or accumulator. This may be associated with Diagnostic Trouble Code (DTC) C1391, indicating an abnormal leak in the accumulator. This problem causes the brake booster pump to run continuously to maintain pressure, leading to the warning lights and noise. Safety Concerns: The malfunctioning brake system components could compromise the vehicle's braking performance and overall safety. Purchase Details: The vehicle was purchased recently from a dealership, and the issue was not present at the time of purchase.
On our 2011 Toyota Prius there is a complete loss of breaking. The ABS, TCS, and brake lights all came on at one but went off after a few minutes. A few days later the entire system failed when the car was started and now there is no breaks at all on the car. A few months before we took the car to the dealership complaining about a noise when hitting the breaks and was told it was normal and to ignore it. It looks like Toyota knows about this issue and opened a customer care repair program but it expired in 2022 and was not advertised at all so the only way someone would know about it would be if they had an issue. Currently in order to fix the problem we are looking at around $3000 in parts and labor. Looking at other websites including this one the issues appears to be widespread.
On April 28, 2024 I was driving when my brakes became squishy and my ABS warning light, red brakes warning light, and traction control light came on. I was very fortunate to be close to my destination and only traveling under 25mph. Roughly a week later it was driven approximately 150ft (on private property) and the brakes were very unresponsive. The car was never accelerated past 3mph for that move. The loss of braking was sudden and happened without any prior warnings. Had I been on a high traffic, high speed road, I believe it likely that this would have resulted in a catastrophic accident. The Master Cylinder Actuator Assembly and Brake Booster Pump Assembly failed. This was confirmed with OBD and a Snap-On Solus Ultra scanner. Both parts have been removed and are available for inspection upon request. They have not been inspected by anyone. I did contact Toyota about the braking issue and they did not express any interest in the issue or inspecting the failed parts. To make my Prius road safe and legal, I needed to replace the Master Cylinder Actuator Assembly and Brake Booster Pump Assembly. These parts were bought from Toyota, who has so far profited from my car's brake failure.
For the past 2 years I've had issues with the ABS, Traction, and Brake lights coming off and on on my dashboard of my 2011 Toyota Prius. Mechanics have replaced various things but have never been able to find the exact problem because the car doesn't either give any codes or it gives codes that don't really say what the exact problem is. I took it to a dealership again today, because not only are those 3 lights on but now the car is beeping continuously, and the dealership told me it was going to be over $5800 to fix the car, that's replacing the brake booster pump and the brake master cylinder, but the only code the car is showing is C1239, no other codes, C1239 is for the rear speed sensor LH. Every time I've had a mechanic/dealership look at the car, they can't find the exact issue and after replacing some parts, they tell me it could be the brake booster pump and the brake master cylinder, when I called toyota corporate about the warranty stuff to cover those being replaced because of the faulty issues that have apparently been acknowledged by toyota, toyota refuses to have the warranty work done, telling me that my car no longer qualifies for that warranty work, although I've never received anything from them talking about this issue in the past. I'm told now the beeping is those two items have completely failed and the car is now unsafe to drive, but it's the only vehicle I have to get to work, etc. The lights will come and go, but stay on more steady now with the beeping sound. Toyota should help to cover this, since they know it's a known defect!
The contact owns a 2011 Toyota Prius. The contact stated while driving at an undisclosed speed, the traction control, ABS, and brake lights were illuminated. The contact stated that when the brake pedal was depressed, the contact heard air coming from the brake pedal. The vehicle was towed to an independent mechanic where it was diagnosed with a failed brake booster pump assembly. The contact was informed that the brake booster pump assembly needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The contact was informed that there was an unknown Customer Satisfaction Program with a similar failure description however, the contact was informed that the repair was not covered under the program. The contact was advised to contact the federal safety agency Hotline to report the failure. The failure mileage was approximately 74,000.
No incident, 3â ï¸ Light started recently, traction control, ABS, and Brake light, 07/15/2024. Big O tire did oil change, inspection, claims brake are ok, warning â ï¸ lights comes on and off intermittently, causes brakes when on to become soft pedal when stopping, I consider a defect of workmanship by Toyota on this 3011 model possibly others l. Thank you for your time
Brake actuator failure on the freeway warning lights started beeping had trouble coming to a stop no brake pressure had to swerve to emergency lane. From my understanding there’s a brake actuator recall took it into Toyota my claim was denied .
As is the case with I am sure thousands of Toyota Prius owners, the brake actuator in my 2011 Prius has failed. The car has approximately 128,000 miles, but given that it is a 2011, the car is outside the Toyota 10 Year/150,000 warranty extension. The deals wants $3,200 to repair. This part should last the life of the vehicle and I am asking the federal safety agency to help individuals such my myself and force Toyota to make the necessary repair free of charge due to the severe consequences to this part failing.
Driving yesterday on residential street, I gently applied my brakes to stop for a red light. The brakes did not stop the car; pumping the brakes did not help. Dashboard illuminated skidding car diagram, and BRAKE light went on. I took my foot off the gas, rode somewhat on the shoulder, and slowly found a place to park the car. Had to have it towed. No prior warning that the brakes would fail. Dealership advised it was a leak in the brake booster pump or actuator. Later learned that there had been a class action lawsuit dealing with this issue. Also that Toyota had extended the warranty when this happened frequently. I never got a recall notice about this. My car is a 2011 Prius with 59,000 miles. The extended warranty only went to 10 years, and mine is 11 years old, but I haven't seen anyone else in the chat boxes who had such a low mileage as mine. Thankfully neither I nor anyone was injured. But this is definitely a major safety issue and a very expensive repair. Over $3,000. What recourse do I have?
The contact owns a 2011 Toyota Prius. The contact stated that upon starting the vehicle, there was an abnormal beeping sound heard. The contact stated that several warning lights were illuminated. While reversing in the driveway, the brake pedal was depressed to the floorboard before the vehicle stopped. The contact's husband an independent mechanic informed her that the brake actuator needed to be replaced. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 147,000.
Hello I purchased this s car used on 03/19/24. I was told the brake and Abs light would clear with new battery, which they installed on 03/19/24. It did clear for a couple of miles, brake light warning â ï¸ and abs came on, which causes car not to brake properly, I have not taken car back but believe it and s a defect of the manufacturer's that it has failed. Any help with this issue is appreciated. If you could tell me, what steps I can take to see if Toyota has any extended warranty for this issue Thank you for your Thank you for your time
Brake Booster, pump failure
The contact owns a 2011 Toyota Prius. The contact stated that the battery was drained frequently upon starting the vehicle. There was no warning light illuminated. The contact also stated that while driving at various speeds, the brake pedal was firm while depressing, with several warning lights including the ABS warning light illuminated. The vehicle was taken to a dealer and based from the noise coming from the vehicle; the mechanic determined that the brake booster and brake booster assembly were defective. The manufacturer was notified of the issue. The vehicle was not repaired. The failure mileage was approximately 204,000.
I bought this car new in 2011, and it is now driven by my daughter. The brakes started having problems around 2019, and the car was taken to Toyota service. It was thought to be a tire issue and the tires were replaced, but the brake issue remained. In February 2024, all the dashboard brake lights came on, and my daughter immediately took the car to Toyota service. The problem was a defective and leaking brake booster pump assembly, a defect well known to Toyota, and the subject of extended warranty on this model (10 years or 150,000 miles) and a recall by Toyota on some other models. Since it was after the 10 year period (despite reported problems during the 10 year period), corporate Toyota told the Toyota dealer service department and our family that they would not cover the $3500 repair bill incurred. This should have been a recall. I am horrified to think what could have happened to my daughter with defective brakes. Corporate Toyota is well aware of this defect. Even a Toyota dealer has previously reported it to the federal safety agency. [XXX] . I request corporate Toyota pay for this repair and issue a recall for other unsuspecting drivers of these vehicles. This is a potentially lethal defect that needs a recall, not a post brake failure repair. I send my great thanks to you for investigating this. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
ABS, Brakes, Traction control lights, and ! illuminated while driving car is under 150,000 miles. Took to an autoshop, Gerald's Tires and Brakes: was told Mastercylinder, booster, accumulator need to be replaced.
The conditions listed in Toyota Customer Support Program ZJB for the brake booster and master cylinder occurred after the 10 year in service date on my vehicle. Brake, ABS, and Traction control warning lights turn on intermittently and when this happens brake response is poor and cruise control shuts off. When applying the brakes an audible tat tat tat sound can be heard from the front of the car that sounds like the ABS being triggered. You should have toyota recall impacted cars and fix the issue as outlined in the TSB and support campaign.
The 2011 Prius has an issue known to Toyota, in which the brake booster pump fails after an indiscriminate amount of time, leading to significant loss in braking ability and control. Toyota knows of this because they issues an extended warranty coverage for these vehicles and this issue, that did not extend beyond 10 years, or 150,000 miles, whichever comes first. [XXX] ) When I was driving my car down Highway [XXX] I lost braking control completely, with a series of constant beeping starting to emit from the braking system. Luckily through mashing the brake pedal and using ebrake I was able to get the car to slow down and pull off the highway. The brakes sporadically and randomly cut in and out with the power braking, leading to uncontrolled stopping power and jerky or inactive braking. There had been lights on the dash indicating the traction system or braking system had issues but these would frequently turn off and on and didn't result in a loss of braking ability or performance and had been there a couple months. Upon taking the vehicle to a Toyota Dealership (Charles Maund North Austin) I was told it was a C1391 error regarding a failure of the brake booster pump assembly and that it would need to be replaced and reprogrammed for about 3300 dollars. After looking online I saw there were many other people with this issue, all who were unable to fix this in the given 10 year frame. Many unsuspecting second owners of this vehicle do not know that there is a hidden danger waiting for them when their power brake pump assembly fails. If I had been a less experienced driver I would've certainly crashed and Toyota, knowing of this safety concern already, should have done the right thing and issue a recall for these vehicles. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Brake warning lights came on, brake stopping has diminished significantly, throwing error codes, attached pictures of the error codes
While driving the car I had three lights turn on the dash simultaneously. The parking brake light, traction control light, and ABS light. The brakes worked but felt spongy and not as responsive as normal. I had it checked out and it has code C1391. The recommendation is to replace the brake booster pump. I was quoted over $2,000 for the repair. There was a Toyota Customer Support Program ZJB that addressed this exact issue. It expired two years ago, and I am now stuck with the repair costs. I believe Toyota should have notified me of this potential danger and/or inspected the vehicle. I meet all the requirements of the bulletin, but it has expired. I reached out to Toyota, and they would not offer any assistance.
The brake system is constantly failing/malfunctioning.It is available for inspection upon request. There has been several incidents where other vehicles have nearly been rear ended. I took my 2011 Toyota Prius (hybrid) to Toyota approximately 8 months ago. They/Toyota did confirm that the problem was indeed the brake booster. The warning lamps did come on soon as the brakes started malfunctioning.
I have a 2011 Toyota Prius with 85K miles, as I was driving on the highway the abs light, brake light, and TSV light came on and then brakes were not working like normal. Had to pump the brakes very rapidly and steer off to the right side of the highway and use the emergency brake to come to a complete stop. I called the Toyota dealer and they said its the brake accumulator fault and they will not cover the fix because it was out of the 10year/150K mile warranty per SB. Towed my car to an independent service center and they confirmed it was the brake accumulator C1391 code. cost me $3000 to fix.
I’ve been told by our machanic that our Prius’ ABS braking system is malfunctioning.
Brake ABS system dashboard lights warning system always always going off for the 9 years I've owned the car. Had the ABS system replaced and still the dashboard lights going off and the system not functioning properly.
The contact owns a 2011 Toyota Prius. The contact stated while driving 40 MPH, he heard an abnormal sound coming from the front-end of the vehicle, and the brake pedal required pumping to slow the vehicle. The ABS and traction control warning lights were illuminated. The vehicle was taken to an independent mechanic, who determined that there was an accumulator pressure leak. The vehicle was not repaired. After investigating the failure, the contact related the failure to the federal safety agency Action Number: DP19004 (Service Brakes, Hydraulic). The manufacturer was notified of the failure but referred the contact to the federal safety agency Hotline for assistance. The failure mileage was approximately 150,000.
I have been experiencing intermittent brake issues with this car now for the last 50k miles. Sometimes the warning lights on the dash will activate, sometimes not when I am experiencing issues. the power assist is the problem. - it activates and then deactivates without warning instantaneously, while applying brakes or not. Sometimes when I am applying the brakes without the brake assist working, it will instantaneously start working without warning, causing my car to almost lock up its brakes. This is very dangerous, especially in traffic. When I apply my brakes at any given time, I never know if I am going to have power assist or not. I have replaced the brake master cylinder once already with a mobile mechanic and the problem went away for about one year but now it is happening again so this seems to be a reoccurring issue with this car. I have decided to just stop driving the car and bought a different one. I am a delivery courier and I cannot be driving a vehicle unsafe as this. I have reported the issue to my local dealership, but they are refusing to troubleshoot without charging me and it’s telling me there are no recalls.
My brakes were making noise since month,now the ABS light turn on.
The ABS, anti-skid, and brake lights came on. Immediately, the brakes were less than full stopping power, and it was obvious it was not safe to drive the car any further. We had noticed that a pump was being activated when the brakes were being used, but no service codes were being displayed when checked. We later found out there was a recall on the Brake Booster and Accumulator, but it was only a limited recall, no notice was sent to us, and no repair was authorized by Toyota unless the brakes completely failed. Once the dash warning lights came on, the C1391 service code appeared when checked, "Abnormal Leak of ACC Pressure". This issue is a safety matter because your brakes fail instantaneously at any moment while driving.
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