2010 Toyota Prius complaints

I noticed that the ratcheting parking brake pedal has stopped ratcheting correctly, and I planned to have it inspected on the next scheduled maintenance. Recently, the brake system illuminated the traction control, ALB and "BRAKE" lights simultaneously, and the braking power diminished by more than half, with no braking until the pedal was halfway down. I depressed the parking brake pedal a few times, which cleared the "BRAKE" symbol and the problem stopped and normal braking returned. This has now happened three times with the same fix. It appears that when the "BRAKE" symbol is no longer illuminated, the problem goes away. This appears to be a software problem that triggers a braking problem to engage the traction control and ABS icons when the "BRAKE" icon associated with the parking brake is illuminated. This web site has other instances reported with the same symptoms, and Toyota had a service bulletin, which has expired, which leads to a $2000-$3000 repair bill to replace a brake booster. It appears to be software related to me, not mechanical. It poses a safety risk because braking performance is severely compromised with no warning. NHTSB needs to look into this, as rear end accidents can easily happen if strong braking in heavy traffic is required to avoid a collision. I recommend that a recall be established to fix this. An alternative cause may be a misaligned micro switch in the parking brake mechanism, which has been experiencing problems. This could lead to the

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I was in my 2010 Toyota Prius with my two children when I suddenly lost my brakes, with luck I was able to let off my gas and coast to a stop. Now I am left with a 3,000 dollar repair. I now know what the price of my children and my life is worth to Toyota! To find that this has already been a problem with no notification is ludicrous!

The contact owns a 2010 Toyota Prius. The contact stated that while driving 50-55 MPH, the ABS, traction control, and brake warning lights illuminated. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The vehicle was taken to an independent mechanic and the contact was informed that the brake booster assembly needed to be replaced. The manufacturer was contacted, but no assistance was provided. The approximate failure mileage was 139,999.

All the lights on my dash board came on suddenly, and the brake emergency, traction control and ABS lights stayed illuminated. Upon exiting the interstate I could not come to a complete stop at the end of the exit, which was very scary. Fortunately the cars driving on the road the exit merges into did, so we avoided a terrible accident. The brakes were spongy and not operating properly after that. The next day with all the lights still on, I slowly drove (20 mph) to the local Toyota Dealer , who claimed that error code (C1391) was being displayed and according to Toyota, that means the Booster is or will be leaking. Therefore the Pump and Booster needs to be replaced (estimated at $3K). No lights or errors were given before the incident, the brakes just suddenly malfunctioned. However Toyota apparently is aware that the booster and pumps fail without warning, because I discovered with an on-line search that code had a "customer extension" warranty (by googling the code C1391), I called customer service but they refuse to help. They claimed I was mailed a letter in October 2018 (they didn't offer to supply a copy.) However, I never received a letter or any notice from Toyota or the Toyota dealer that I have repeatedly used since I bought the car in 2010 (I have had brakes replaced there when it was under 150k and no one said anything!) Now they are stating that the extension has expired as it was only good up to 150,000 miles or 10 years which ever came first. I can't understa

The contact owns a 2010 Toyota Prius. The contact stated that while driving at an undisclosed speed, the contact depressed the brake pedal and noticed an abnormal humming sound. The contact stated that the failure had been intermittent since 2016. The contact stated that the failure had become persistent. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure but did not assist. The failure mileage was approximately 296,842. The VIN was unavailable.

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

The airbag sensors for my passenger seat do not work. Regardless of if there is someone sitting in the passenger seat, buckled it, the system indicates that there is no one sitting in the seat and that they are not buckled in. This is of course a safety issue since the airbags would likely not go off even if someone was sitting in the seat. My vehicle is available for inspection upon request. They first appeared shortly after I purchased the vehicle from the last owner. The vehicle was lightly used and is very clean, and I have no reason to believe the passneger seat was abused in any way. My concern is this: this airbag sensor issue is a recall I have seen for other 2010 Toyota Priuses. I understand that in the systems, this recall does not show up for my car. However, I think it's interesting and worth looking into that I have the same make, model, and year, and my vehicle is having the exact same issues. This is an issue that was not triggered by any crash/collision, and I did not have anyone even sitting in my passenger seat prior to this issue, so it seems to be purely a system issue that I could not have prevented myself.

The contact owns a 2010 Toyota Prius. The contact stated while driving at various speeds and depressing the brake pedal, the brake pedal was firm and difficult to depress. The contact stated that that the brake pedal was pumped to stop the vehicle. The contact stated that the ABS and stabili-trak warning lights were illuminated and an “Exclamation Mark" message was displayed. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the brake master cylinder and brake booster pump needed to be replaced. The vehicle had not been repaired. The contact researched online and related the failure to NHTSA Campaign Number: 10V039000 (Service Brakes, Air). The manufacturer had not been informed of the failure. The failure mileage was approximately 138,000.

Excessive Oil consumption, particularly with highway driving. I have had this car for about a year. I only noticed that the oil was nearly empty when the engine was shaking while idling at an intersection. No warning lights for oil pressure or level ever came on, it would occasionally "ding" for oil pressure, but barley long enough for me to even read what the warning was. By excessive, I mean VERY excessive. First oil change after only 3k, almost empty. Road trip, mainly highway only about 600 miles, nearly empty. If I top it off, I check it constantly. City driving (more electric) it may burn a quart every 1-2k miles, highway more. I had the EGR, manifold and plugs serviced/replaced, it improved slightly. I'm having more work done now, but after reading SO MANY similar complaints online, I find it hard to believe this isn't a recall. An engine sputtering and nearly dying while idling is not safe, especially with no warning lights on! I contacted Toyota, they said they had not recalls or Consumer Confidence programs for complaints of oil consumption and/or piston ring seat problems in these vehicles (seems to be the primary cause). I did see a class action for many other Toyota 4cyl engines due to excess oil consumption.

My car malfunctioned causing me to lose control of the car and it crashed into 38 Woodcutters Lane first, and 33 Woodcutters Lane second.

The breaking lights, skid lights and another light associated with breaks came out and I lost the ABS abilities, the hv battery is not charging while breaking. These lights comes out randomly. Very risky especially while breaking.

Due to insufficient corrosion protection, the rear brake line of my 2010 Prius burst as I pressed the brake pedal in my driveway. It dumped ALL of the brake fluid onto the ground within a couple of minutes. Imagine if I had been driving!! There could have been a serious crash!! This was sudden. There were no brakes! Pedal lost all pressure and went to the floor when pressed. Lots of warning lights and alarms screaming inside car. The vehicle has been inspected and repaired at the Toyota dealer as of 10/03/2023. I have pictures of the failed part when it was installed on the car. If the dealer is contacted quickly, they might still have the actual failed brake line (which I was charged disposal fees for.) This was very scary and numerous lives could be at risk due to the popularity of this car and its use in rideshare/taxi service. There were no warnings prior to this. Brakes worked normally. Car is well maintained with dealer service records. There is no excuse for not properly trading such a critical part for corrosion, just to save money. Peoples lives are at stake!! It's the BRAKES of the car!! Someone needs to investigate this! I have pictures and receipts I can provide.

I was driving and all of the sudden lights came on, on the dashboard and when I started to slow down, I noticed the brakes were very "mushy" and barley worked. I then drove it directly to the dealership and on the way the lights went off, and brakes went back to normal. This is a very dangerous situation for anyone to be in and I don't know why NHTSA has not made this a mandatory recall for Toyota, I did find a recall # 13V235000 (which needs to be extended). The dealership said it would cost $3,000 to replace the Brake Booster Pump Assembly and Master Cylinder. This type of repair should be recalled, and NHTSA should get this resolved with Toyota ASAP.

Affected by the recall number 10V036000, the 2010 toyota prius is manufactured with a defective brake booster and master cylinder system which causes defect of the brake system, and causes my vehicle to often lose power in abs and randomly lose abs power braking, making brakes hard, and makes for longer stopping distance. This is a problem for many and obvious reasons on the road regarding safety. All vehicles should have optimal braking systems for the road, and should otherwise be repaired at no cost if the car is manufactured with defect. This has caused no accident for me yet but the abs has failed on many occasions. I have read at least 100 cases of this given vehicle under this recall being caused an accident with faulty brakes, and sometimes complete failure to stop which is extremely worrying. This recall excludes vin numbers past a certain date, yet the recall in question is certainly still affecting many cars, as capistrano toyota has also called for petition of toyota to repair at no cost for all affected vehicles. Yet all dealerships have denied my request and toyota has no formal coverage regarding the rest of the faulty vehicles they manufactured.

Known problem for Prius with limited manufacturer liability. My breaks started failing, I am being quoted at $4000 in repairs and labor. My car is 3 years older than the recall parameters but within mileage. Manufacturer won’t cover anymore since it’s past due

Brake system failure. ABS light / Brake Light / Traction Control light. There is a recall but expired. Code C1391 need to replace Brake Booster and Brake pump. Recall should have included my car. 1,500.00 plus parts only. recall should be extended.

Hello on my 2010 Prius the ABS, Brake, Traction Control lights are all on lit up on my dashboard. Brakes are making loud noise when I stop the vehicle. I took the car into my local dealership service department. I’m being told that the brake booster and master cylinder needs to be repaired. This was a part that was put under an extended warranty with Toyota but now it’s no longer being covered by the warranty. So they want me to pay out of pocket to fix. I would like to report that they should honor the warranty agreement for my vehicle.

The contact owns a 2010 Toyota Prius. The contact stated while driving 45 MPH, there was an abnormal sound coming from the front driver’s side of the vehicle. The contact stated that the traction control, brakes, the Pre-Collision System (PCS), and the ABS warning lights were illuminated. The contact took the vehicle to the local dealer, where it was diagnosed with needing the brake actuator and the brake booster to be replaced. The vehicle was not repaired. Upon investigation, the contact associated the failure with the TSB: POL1803, however the vehicle was not included. The manufacturer had been informed of the failure. The failure mileage was approximately 143,000.

To submit a claim to the NHTSA regarding my 2010 Toyota Prius (VIN [XXX] ), I wish to highlight a concerning issue with the brake booster, actuator, and brake booster pump assemblies. This malfunction has the potential to lead to brake failures, posing a significant risk of collisions with other vehicles. The presence of a diagnostic trouble code (C1391) and the illumination of ABS, traction control, and exclamation symbol lights, coupled with an audible whirring sound during braking, underscore the confirmed nature of this problem. This whirring sound initially emerged a year ago, accompanied by temporary dashboard light activation, which eventually subsided, while the whirring sound has persisted. Toyota has initiated an extended warranty program labeled (ZJB), encompassing a span of 10 years from the initial usage date or until 150,000 miles are reached, whichever comes first. Regrettably, my vehicle's mileage has exceeded 182,000 miles over the stipulated 150,000-mile threshold, and its age surpasses 13 years, rendering it ineligible for inclusion in this program. The actions of Toyota appear to prioritize financial gains over the well-being and security of countless drivers and passengers who are potentially endangered by these defective brakes. Their stance is exemplified by the reluctance to offer a comprehensive solution. I find myself compelled to bear the burden of approximately $3,000 in brake-related expenses at dealerships—an unjust imposition on consumers, given

My brakes are not working effectively. They are not engaging as they are meant to.

Brake booster failed while driving. Warning light ABS, traction control and brake light lights up. Lost power brake. Car is hard to stop with the manual brake in the fail safe mode. with C1391 code logged. Toyota had an ZJB warranty extension but my car is not covered because the warning light did not show during the 10 year window. The brake booster fail appear common and should be cover by a recall instead of a warranty extension.

Brakes take longer to apply with weird noise. There is a weird sound. Brakes are fine not worn. Mechanic says bad abs actuators which should not have failed since should last life of car. There was a recall on this but my car not in the vin search not sure why. All problems described in that recall is what I am experiencing.

Brake system failure. ABS light / Brake Light / Traction Control light. Low mileage car. Likely the last Hybrid I would buy. $4000 to fix. Almost what I paid for the vehicle. There is a recall but expired. Should be by mileage not time!

There's existing problem right now in my vehicle that braking is less responsive and also the ABS, EMG brake lamps and Traction control lights are on the whole time on my dashboard. I took it to the mechanic and he found out that Theres a problem with the Brake Booster Pump Assembly which developed a crack inside the accumulator housing. As result nitrogen gas could leak into the brake fluid and gradually cause a loss of power assist. Under certain circumstances, this could affect stopping distance and increase the risk of a crash.

Even though a related recall has already been performed 4 years ago, my vehicle is exhibiting the same brake safety symptoms: - 3 dashboard lights all illuminated: BRAKE, ABS, and traction control (anti-slip) - brake accumulator pump noise occurring at 5 second intervals - regenerative braking and ABS are non-functioning - error code C1391 appears via OBDII The above symptoms appeared two weeks ago (6/14/2023), and on 6/16 an independent service center that specializes in foreign vehicles (including Toyota) confirmed the symptoms and error code, and said that the vehicle is unsafe to drive due to impending brake system failure. Toyota dealer indicated newer brake system parts are available to address the issue, but would need to be installed at my cost. The symptoms appeared while driving the vehicle at freeway speeds commuting to/from work. The vehicle is available to be inspected, however, I have already scheduled a repair (at my cost) because we use it daily for work.

The break booster started making a noise and my car should have fallen into the range of the previous recall for the exact part. I cant afford to change it so I continue to drive it and all of sudden the breaks are so hard to push and a constant buzz is going off! Autozone confirmed it was the break booster ans abs then a private shop did also

ABS pump booster failed. Hard to stop the vehicle. Almost had an incident. Trouble code C1391.

My ABS, break and anti-skid lights came on while my vehicle was parked. The ABS system shouldn't fail on a car. Many other 2010 Prius owners have reported the same problem. Toyota had break system recalls back in 2010 and 2013. I believe my car may should have been part of the recall, but was overlooked.

I took my vehicle to my mechanic at my independent service center because I experienced shaking/significant vibrating at 60 mph. I had also experienced a loud noise that only lasted about 2 miles. He found that the right rear brake unit, specifically the caliper, had seized. I contacted Toyota of America because there was no brake warning light to alert us of this situation. I received a call back from David from Sloane Toyota in Glenside, PA, who confirmed that the caliper seizing would not cause the brake warning light to appear. He also indicated that the caliper is not something that is routinely checked as part of state inspection, or the regular maintenance schedule. I am deeply concerned that this mechanical failure of the brake unit could have resulted in death(s). I request that Toyota vehicle owners and mechanics be alerted to this, specifically the fact that the brake warning light does not alert a driver of this brake part failure. Further, I request that an inspection of the calipers be included in the routine maintenance schedule and annual state inspection. Thank you for the work that you do to keep us safe!

ABS brake booster failure. Vehicle with approximately 140,000 miles. Previous safety notice expired that covered 10 years or 150,000 miles

The contact owns a 2010 Toyota Prius. The contact stated that while driving at an undisclosed speed, the ABS warning light and two other unknown warning lights illuminated. The contact stated that the brake pedal went to the floorboard while depressed. Additionally, the contact stated that while self-inspecting the vehicle, he became aware that there was no brake fluid in the brake fluid reservoir. The contact stated that when the vehicle was self-inspected for a second time that same day, the brake fluid was full. The vehicle was taken to an independent mechanic, who informed the contact of an unknown recall for the brake booster. The vehicle was not repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 85,000.

There was some kickback or resistance when engaging the brake to start the car. When the car turned on, the brake light, ABS light, and traction control light lit up. I took the car to Toyota service, they stated that the brake booster pump was defective and needs replacement. I see that there is not an open recall for this vehicle, however there was a recall #13V235000 that was sent out in 2013 with the exact same issue for 2010 Toyota Prius. We bought the car as a certified Pre Own in 2015, so we did not get this notification. I am trying to figure out why this car does not fall under the recall category? Thank you.

The braking system developed a leak in the accumulator causing the whole braking system to fail and turn the abs light on in the car as it leaked brake fluid into the brake booster from the master cylinder

Hybrid system shut down while driving. Cleared at deal ship twice. happened two more time. Dealership claims they were unable to recreate the issue.

Took my car to Toyota dealership to get remedy J0V NHSTA recall ID NO. 18V684 Fixed. Dealership has refused to work on recall and has told me I need to pay out of pocket for repair because my car does not fall into certain codes yet it’s a specific recall that needs to be done on my vehicle

Almost caused a major accident. Brakes failed with no warning!

My Prius 2010 has thrown the ABS, Traction, and Brake HUD lights all together. I took it to an Autozone and scanned the code to get the C1391: Abnormal Leak of ACC PRESS error. Many Prius 2010 have this issue, I'm sure I'll need to replace the actuator and/or accumulator and I know that will cost a good bit, i hope Toyota could help us fix it.

2010 TOYOTA PRIUS. CONSUMER WRITES IN REGARD TO PAINT ISSUES ON VEHICLE. THE CONSUMER STATED BECAUSE OF THE ORIGINAL PAINT PROBLEMS, "A CUSTOMER SUPPORT PROGRAM IS PROVIDED BY TOYOTA FOR VEHICLES WITH THE ORIGINAL FACTORY BLIZZARD PEARL PAINT. IF THE CONDITION IS VERIFIED THE SPECIFIC PANEL AFFECTED WILL BE REPAIRED."

I was driving and all of the sudden lights came on, on the dashboard and when I started to slow down I noticed the brakes were very "mushy" and barley worked. I then drove it directly to the dealership and on the way the lights went off, and brakes went back to normal. This is a very dangerous situation for anyone to be in and I don't know why NHTSA has not made this a mandatory recall for Toyota, I know why Toyota does not recall $$. They are now making $$ on parts and their dealers are making $$ on this service. I did not find a specific recall on the NHTSA website but I did find a recall # that I will be looking into in more depth. That recall number is 13V235000. The dealership said it would cost $3,000 to replace the Brake Booster Pump Assembly and Master Cylinder. If I were someone with very little funds to get this repaired then I would drive the car as my only source of transportation. This type of repair should be recalled and NHTSA should get this resolved with Toyota ASAP.

Purchased new a 2010 Toyota Prius third generation level 4 in July of 2009. Hybrid battery pack failed just after 150,000 warranty lapsed at 155,000 miles. January 2023 floods in Merced, CA damaged one of blocks in Hybrid battery pack driving through waters at 191000 miles on odometer. This threw DTC POA 080 'Check Hybrid System' message. The following month February 2023 at 191500 miles I notice loud cooling fan for hybrid battery operating for the first time ever! Fan is located in rear seat behind front passenger. Air vent is clearly visible. I believe defective fan led to overheating of hybrid battery premature failure at 155,000 miles.