2013 TOYOTA PRIUS Service Brakes Problems

I was driving and notice ABS light and other light came on, then noticed that when I tried to brake it felt weak, had to pump brake, then later noticed a leak on brake fluid. I took car to Toyota and they checked it and said brake booster and booster pump needed replacing and they wanted to charge me 3,000 dollars. I could not do the job so I checked around and the auto one in my area informed me that many Toyota Prius’s had a recall on that issue. I made an appointment with Parks Toyota in Deland, Florida to fix problem but when he got there they told me that my car was not on recall for that but was for battery EV fuse but couldn’t do because my engine light was off. I am having such a difficult time with this car. I cannot risk my life...

ABS warning light illuminated and the system failed while driving, causing longer braking distance and reduced steering control during braking. I am concerned this ABS malfunction increased the risk of a crash for me and other road users.

The brake actuator/ABS hydraulic system on my 2013 Toyota Prius failed. The component is available for inspection upon request, as it was replaced by a Toyota dealership. Prior to failure, the vehicle intermittently displayed ABS, Traction Control, and VSC warning lights while driving, which would sometimes clear on their own but eventually became persistent. This condition reduced or disabled ABS, traction control, and vehicle stability functions, increasing the risk of loss of control or reduced braking effectiveness, particularly in emergency braking or low-traction conditions. The problem was reproduced and confirmed by a Toyota dealer, who diagnosed the failure using diagnostic code C1391 indicating internal brake actuator malfunction. The vehicle was inspected by the manufacturer’s authorized dealer, who replaced the brake actuator assembly after three days of repair at a cost of approximately $3,000. Warning lamps were present for months prior to the final repair and gradually progressed from intermittent to...

I was driving on Saturday January 10th, 2026, when out of nowhere all of my dash warning lights came on and the brakes felt spongy and unresponsive. I had to limp home with 20% of my brake capacity which was very scary. Did some research and it was my brake actuator that went out. Dealer quoted me $4,000 to fix! This is a very common issue with Priuses between 2005-2015 and it's a crime that the part has NOT been recalled. Please put out a recall for this part. Toyota has already had a class-action lawsuit so precedent has been set. I have no idea how I'm going to pay $4,000 to fix this, I'm recently unemployed. Please hold Toyota liable!

Red brake light came on, traction control light came on, ABS light came on, Toyota says my brake pump needs replaced. That my brake will fail.

On [XXX], we were driving from Coalinga, CA to Phoenix, AZ for Thanksgiving. As we began to descend into Los Angeles on [XXX], three warning indicators suddenly went on: the ABS warning light, the traction control light and the brake warning light. The brakes still worked but the brake assist was weakened. We pulled over as soon as possible at the nearest AutoZone. The employee performed a standard handheld OBD-II scan of the vehicle and did not detect any issues. We continued on our way through Los Angeles and to San Bernadino where we were spending the night. At one point the indicator lights went off for a few minutes but then came back on. We spent the night in San Bernadino, and the next day (11/26/2025), we took the car into the San Bernadino Toyota Dealership as we felt it was unsafe to keep driving. The dealer conducted a...

The Brake Booster and Brake Booster Pump Assembly have failed. They have caused the following warning lights to go on: ABS, Brake System waring light, Slip Indicator Light, and the Electric Power Steering light.

brakes had no stopping power. Normally when braking it was smooth. All the lights went on. Toyota dealer confirmed that the brake booster Pump Assembly and Brake Master Assembly needs to be replaced.

My daughter was driving the 2013 Toyota Prius on the interstate in Chattanooga, TN. The brakes did not feel right and the car was very difficult to stop. (It did not brake at a normal distance) My daughter was able to get someone safely, and she had the car towed to the dealer. My daughter's life was endangered by this brake booster failure, but there is no recall listed on the vehicle. Also, when I Googled the issue, I found that it is a well-known and common problem in this year Prius. The brake booster failure is due to a Toyota design flaw, and Toyota is apparently being sued for it. Why is this issue not listed as a recall? I would not have allowed my daughter to drive around in a car for which the brakes are known to fail. How many accidents and deaths will be caused by...

My 2013 Prius Plug-In Hybrid with 131k miles on it showed the ABS, Brake, and Traction Control lights while driving last week. Diagnostics from auto shop showed DTC code C1391. System is available for inspection upon request. Safety is definitely at risk, since I am needing to drive it around to assess the issue, and brakes could fail at any time. Vehicle has not been inspected by the manufacturer, police, insurance representatives or others. After speaking to Toyota, I was informed that--although under 150k miles--my car is not covered by the extended warranty because it is 2 years past the 10 year requirement. I drove my car very little between 2020-2022 because of the global pandemic. This is a very common issue with 2012-2015 models caused by a defective part, and it's likely that the problem does not commonly present itself until after the warranty expires.

Brake actuator went out on 2013 Toyota Prius Gen 5. The part is very expensive and in my opinion is a part that should not have to be replaced. The care has 120,000 miles. It is driven very softly, meaning not fast and hard but commuting to work and grocery store as needed. A nice commuter. It is not fast but gets you there. The actuator put me at risk as stepping on the brake was hard and the car did not want to stop and I was close to hitting the car in front of me. All the lights came on at the dashboard and I was very scared to continue to drive and had to get a tow truck.

I had my car serviced Oct 21 and when I picked it up the vehicle brakes made a whooshing noise and felt spongy. I thought it must be ok as they had just serviced it but when it became apparent this could be a problem I took it back Nov 1 and was told the hydraulic brake booster pump needing replacing at the cost of $3400. I was shocked as they told me it could break completely AT ANY TIME but the brakes would still work. I decided to drive it home as that is an enormous car repair bill and I would have to get financing or get a different car. I didn't want to make rash decisions. I investigated the issue and found out this was a recall for these vehicles for 2010 through 2019 models. This same dealer did not mention this to me at the time...

The brake booster fail and I'm at like 140k. It was very scary when it happen to me today. I press on the brake think it would brake like normal but no. It kept sliding. I felt like I was going to crash. I don't have any paper report on it yet but they are certain it's the brake booster.

Last night, the brakes stopped responding, warning lights came on (ABS warning light, brake system warning light, and the slip indicator light). This morning, a local auto repair shop diagnosed the problem as a failed brake booster assembly. This is a safety issue and we have been told we have no option but to pay to replace the entire assembly. The repair shop has contacted the local Toyota dealership, from which we have to purchase the replacement brake booster assembly.

ABS, BRAKE AND Stability lights came on, i have to press all the way down the brake pedal for car to stop.

while driving the 2013 Prius hybrid , the ABS , brake light, and traction control lights came on. The brake was rock hard and the car would not stop at the light, causing me to swerve away from the cars in front of me and pull into a nearby parking lot. The brake would not work. There is a constant beeping noise in the car , which is a brake warning. I looked up the problem and just like many other Prius owners, there is a brake booster and brake accumulator issue and Toyota is not owning up to this problem. Many Toyota Prius owners are complaining of this loss of brakes issue. How long until NHTSA forces Toyota to do a proper recall about this very dangerous loss of brakes issue ??? They recalled a few vehicles, but the recall does not seem to cover many Prius vehicle owners...

The brake pedals felt very soft with no resistance and barely had braking power. Was taken to dealership and they said it’s the brake booster which was a common thing on these cars, but there’s no recall to fix it and they won’t replace it.

On this 2013 Toyota Prius 2, the brake actuator is starting to make more and more rhythmic noise. A mechanic just alerted me that the seal is leaking, requiring a costly repair - to which he said to check for a recall as he has seen many Priuses with the same issue. While no Toyota recall is present, I can see that the NHTSA is already investigating the issue for a potential recall. As this is a live example in the Los Angeles, CA area, I am happy to demonstrate this issue to a NHTSA office, if necessary and/or available.

My Prius has a brake actuator defect that is common among 2013 Priuses. Supposedly Toyota mailed a notification of this problem, but did not do a recall. The notification offered to fix the problem, but you had to know that your Prius had the problem. I did not know. Once I understood that my Prius had this problem, the Toyota repair window had closed. The Prius is dangerous to drive. I approached Toyota and the dealer that sold me the car, and Toyota refused to authorize the repair and so the dealership refused to fix at their expense. I spent thousands on unnecessary brake replacement because the problem was never the brakes but the brake actuator, which is a KNOWN PROBLEM! Yes, the problem is able to be discerned upon request and I have taken video and you can hear the noise. This problem puts the driver, passengers and other...

Full brake actuator assembly failed. Brakes started responding differently and we became uncomfortable with driving the car. Problem was confirmed by ISC. The part has not been inspected, but I will ask them to save the part for me. No, it all happened at once while driving at speed on the freeway.

The hybrid braking systems on Toyota Prius' manufactured from 2010-2015 had a serious failure of the hybrid braking system that had additional long term warranties to repair, but never recalled in order to save the money from a total recall. The Sloan Toyota dealership in Glenside knew before I purchased the 2013 Toyota Prius I purchased that a serious brake system failure was very probable with my car but failed to tell me. If they did, i would not have purchased the car. I had the 5000 mile oil change in early August and three days later after the service and a clear 25 point inspection, and the system failed. I want full reimbursement or just pay for the repair.

The Toyota brake booster system failed and is no longer safe to be on the road. The car will no longer brake properly and is a danger to anyone else on the road. It was inspected by Toyota prior. The entire dashboard warning lights for the brake system lit up 2 years ago and has fully failed now.

I have a 2013 Toyota Prius with 164,000 miles. A mechanic confirmed that the master cylinder and brake booster are failing and are not covered since warranty expired 14,000 miles ago. I have heard this is a common issue with this vehicle. Traction light, brake light and ABS light are all on. The earring lights go on and off.

when test driving the vehicle I asked about this buzzing/ whirring noise while sitting in the running but parked car. I was told these cars are hybrids, the electrical components make all sorts of whirring and humming noises and not to be concerned. Over the years I heard this noise, increasingly more and more, but I never knew it was something to pay attention to. Fast forward to July 2025. I noticed the car is inching forward while I’ve been stopped for a while at a red light almost like the brakes don’t want to hold. This has been happening so often that I have began to put the car in park while waiting for lights to turn green because it gets painful having to push the brake so far down. I take my car to a mechanic, explain all of the noises and the sensations and two mechanics Drive...

Car currently at 88k miles. Spongy and weakening brake pressure. Slower to stop. Brake constantly priming indicates brake actuator and brake boost failure. Confirmed by independent mechanic.

Failed brake booster, pump, fluid, and actuator on my Toyota Prius 2013 with 143,972 miles on it.

Brake booster, ABS controller, and brake booster pump have failed for a second time. Parts replaced with new, in box from aftermarket dealer. Dealer/Manufacturer refuses to accept that there are design flaws and will not recall.

I was driving normally, about 30 mph in a residential area and the brakes all of sudden became soft. It was very scary and I didn’t know if it was safe to drive the vehicle. The brake, ABS, and traction control sign all came on at the same time. I scanned the car and it was a C1391 error code. The Toyota dealership said it is not covered under any recalls. I called Toyota and asked about the ZJB program that covered the repair but they said it expires. Toyota has a repair program for the defective part but no longer covers it. This issue is a known manufacturing issue and it’s dangerous. Toyota should cover it free of charge.

When I’ve hit a pothole or hit the breaks to hard by ABS, and traction control lights would come on and then turn off. The other day they all turned on and stayed on with the break light on as well. Breaks all seemed to work fine, just a little spongy. I brought it in to a shop and they estimated 3k to repair Remove, replace, calibrate, and bleed ABS accumulator assembly and brake master cylinder assembly. Test drive-New OEM Toyota Parts. These parts were recalled but only up to 10 years or 150k miles. I’m at 164k so ineligible for the recall but if this part completely failed while I was driving I could have been killed or caused someone serious harm.

Around May 2025, the brake booster and pump in the car stopped working. There was no clear warning lamp or indicator prior to it failing. While driving on the highway, the part stopped working and significantly changed the car's braking power. Rather than smoothly braking as it did before, the car's brakes have significantly less braking power. The defective part also affects the car's ABS system, making the car unsafe if a sudden stop were required as the brakes will lock up and the car will lose grip on the road and start skidding. Significantly longer braking distances is needed and it's not clear the car would be able to safely stop at a short distance in the event of an emergency. It's a miracle we didn't get into any accidents when the part suddenly failed. There is a significant risk that failure of this part will be the cause...

Just like many prius owners have complained of brake actuator/booster failure , my brake booster has failed also. Toyota recalled some cars and then decided to not own up to this issue which they know is affecting many pruis owners and costs between $3000 and $4500 for dealers to fix, therefore Toyota has just decided to refuse to do this repair and leave their customers high and dry with a known major safety brake issue affecting these most prius vehicles. Toyota needs to be forced to recall these cars and own up to this issue. Look at how many complaints Toyota has had on this brake booster issue and yet they are refusing to recall or even offer help to resolve this major safety issue. NHTSA needs to put pressure on Toyota to recall this brake issue affecting many prius owners as shown by the volume of complaints.

The ABS system and the brake actuator began to fail, which triggered multiple warning lights. The Toyota dealership service department confirmed that the Anti-lock brake system and the actuator needed to be replaced, a $3800 value.

I am experiencing the issue described in the BRAKE BOOSTER AND BRAKE BOOSTER PUMP ASSEMBLIES recall issued by Toyota for the Prius, which for me ended in 2023. The vehicle is unsafe to drive without performing this $4000 repair (dealer cost), which is almost more than my car is worth. Toyota should issue another extension for the repair coverage since they are known to be faulty. The previous recall and extension of the recall can be found here: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

A very common issue with 2012-2015 models caused by a defective part that causes the brake fluid to leak into the brake actuator causing an eventual DTC C1391 error code that Toyota previously had a recall and warranty on the parts. ABS has failed, traction control is non-responsive and the brake light is on. This is an issue that Toyota was previously aware of and only recently discontinued their “extended” warranty for the failed parts - despite this occurring in the upper mileage life of the car. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

There has always been this ringing sound when releasing the brakes. I had it looked at and was told there was no issue. Then while driving it felt like the brakes locked and all of the sensors came on the dashboard. I had those scanned and was told they were sensor issues but car started driving/braking ok. Few days later everything locked up. I can’t push the brake at all. I was told the Brake Booster Pump Assembly with Accumulator was shot. So i began research and saw hundreds of complaints for the exact thing in my make and model and year. This could have killed someone had it happened on a highway. This should be a recall, major issue that numerous are experiencing.

While driving on Highway 316E on March 31, 2022, at approximately 10am, at some point, as traffic started to slow down and I applied my brakes I was dumbfounded when my car would not stop! It was frightening, as I watched my car get closer and closer to the large truck in front of it. I kept applying the brake and then pumping the brake. The brakes kept failing and had no pressure or tension in them to stop the car. The brake pedal was flat on the floor. But, thanks to a sufficient distance between my car and the truck in front of it, it rolled to a stop just short of crashing into the back of said truck by an inch or two. Sometime in October of 2024 , I spoke with a Service Rep at Marietta Toyota about a whizzing sound that appeared to be coming from...

For last 4 years i have been noticing a hissing sound when brake pedal is pressed. At first it was unclear to me where it could be coming from, and no indicator light has triggered. I have brought this to the attention of toyota dealership when i first noticed it and the individual couldn't really make out what it was. The sound has now gotten worse, and upon further studies i am learning that there was indeed a recall pertaining to the brake booster and actuator, but my car for some reason is not included. This is a major safety issue and i expect toyota to help resolve. Please help.

Break booster issue. Car only has 63,465 miles. Toyota has received reports about certain internal malfunctions of the brake booster. Problem is, not many have had luck getting the part covered because it's likely that the problem does not commonly present itself until after the warranty expires.

The ABS system has failed, and I have to pony up $3000 + for repair, since the warranty extension from Toyota has expired - 10 years since first use (even though I have only had it for 5 years). I have less than 150,000 miles on this car, which is the the other parameter for service coverage for this problem. Toyota knows these parts fail, and they extended the warranty, BUT there is no recourse if your car is over the 10 year limit, even if under the mileage limit. it is a safety issue and should be addressed no matter the age of the car. I can't afford the cost of repair and so will gamble on not needing to use the antilock brakes.

My prius have a scan code: C1391 and my brakes don’t work good i almost crash. And I traying to see what happen online but i see hundreds and hundreds, of prius with this problems, you need to do something and do a Recall. This is a recurring problem with Prius models, and they never do anything about it. It seems like Toyota is paying someone not to do the recall.

6/12/25 I'm driving my 2013 Prius w 123K m through a construction zone. The road became bumpy and when I depressed the brake nothing happened. Thinking I must have hit air or be imagining things I tried the other pedal. The acceleration re-oriented me to the fact that my brakes were non-existent. Many lights I've never seen illuminated on the dash as I looked into my mothers eyes to say we had no brakes. I was somehow able to pull safely. After the initial loss of braking I discovered I had a small amount of stop if I put the pedal on the floor. The closest local shop thought most of the internal braking system related to the pump and actuator would need to be replaced but requested I get an opinion from Toyota. At drop off I had requested they top off the brake fluid, despite their informing me...

Brakes failed to provide sufficient power to stop car. Towed to garage where FIXD was plugged in OPBD port and received code "C1391." Cost to replace parts and labor is $3,002.42.

I wash my car at the car wash and when I got back in a bunch of the dash lights were on including the ABS light traction control and I had no brake pressure. I took it to the shop and they said my brake booster had failed and it was going to be $3,000 to fix it went out do I have any idea now okay

My vehicle displays the anti-skid light when brakes are applied. I also hear a chirping noise and brake pump activation noise when the vehicle's brakes are utilized and as the vehicle is stopped. Information on the internet indicates this is a serious issue with the Prius Gen III brake system, requiring replacement of the hydraulic brake booster and pump. This brake failure should not be happening, and Toyota has already identified this problem. This Prius has been trouble free up to this point and has ~185,000 miles.

Toyota defective ABS system- revised master cylinder&brake booster pump never changed by dealership except misleading inspection and breach of recall in 2020. The incident happened last year in Sep 2024 dangerous on hwy or freeway. Thank got I was on the side street with beeping vehicle and codes on the dashboard, barely with serious risk went back home! As a defective parts they should be replaced for free or customer should received reimbursement! A professional dealer who performs  ONLY AN INSPECTION for a “recall” in 2020 should replace the factory-damaged part and not brazenly wait for the codes to appear on the dashboard, depriving the customer of free replacement of the factory-defective ABS system. "the complaint was originally filed over the Toyota hybrid system problems in Feb. 2020, presenting claims on behalf of owners of certain 2010 through 2015 Toyota Prius and Prius PHV, 2012 through 2015 Toyota Prius V, 2012 -2014 Toyota Camry Hybrid and Toyota...

CODE C1391 - Brake booster assembly failure

Last year, the brake light failure came on the dashboard. I brought the car to a repair shop they diagnosed the problem as a rusted brake line on the passenger side. Bill approximately $700 for the repair. Over the last weekend, I was driving near my home, and the same indicator lights came on. I drove home and when I got home, noticed that there was brake fluid on my garage floor. I checked the brake fluid level there was none detected. I filled it up with brake fluid and waited until the next day, and the level seemed stable. I started the car to bring it to a local repair shop. No more indicator lights were showing. The repair shop said it was the driver's side brake line that had rusted out. $400 for it to be replaced. I reported this to Toyota today. Reference Number #250516001403

Vehicle warning lights for brakes, ABS and traction control all on while driving. Per mechanic, known problem on Prius and repair cost is $3-$5K. Covered by a prior customer support program but has expired. I have two Prius’s with the identical problem - bill will be up to $10K Error codes C1391, C1214

Vehicle warning lights for brakes, ABS and traction control all on while driving. Per mechanic, known problem on Prius and repair cost is $3-$5K. Covered by a prior customer support program but has expired. I have two Prius’s with the identical problem - bill will be up to $10K. Error code C1391

Brake accumulator suddenly failed in vehicle. Known issue from manufacturer