2010 Toyota Prius Electrical System Problems

brake booster that was a recall that toyota said expired in 2020 when i bought the vehicle and the toyotal dealer didnt inform me of the recall to fix it said everything was fine when it was not, i had a dc inverter sensor brake booster issues and now it ills off my 12volt battery every time i put one in lasts about 1 mth, upset dealer never told me this wjhen took in tel me any recalls or probelms, they said none, they lied to me. it kills off my 12volg agm batteries in the last 7 mths been having braking booster issues problems grrr,,, noise all the time when the car is off too, its killing off my hybrid system and my temathetics module is having issues too because of all this and evey battery i put in the car, i want the ntc gov to have toytota recall fix these problems with my car and not expire the recall they had in 2020 cause now i cant fix my car cause of it, i was lied to by the lavista toyota dealer that it has no probblems in 2020 of august when i bought it no recalls and this recall could have been fixed if they would have been honest. unexpire the recall on my brake booster and my dc inverter and sensors probelms killing off my new batteries all the time. call me right away or email me about this, its a urgent matter life or death situation with this car, since the brakes are failing and i have to drive it every day and toyota mfg or dealer wont fix cause says expired recalls cant fix it.

i have have 2 problems, both was recalls, but this one they say expired in 2021 when i bought the car and toyota dealer didnt tell me had recall so i could fix it before it expired. there is a class action lawsuit in the brake booster, master cyclinder actuator abs pump fialing loosing brakes making grrr noises leaking all brake fluid out continously dangerous to drive can cause bad accident wreck since i drive down the hwy alot and this is the only car i have to drive, i also have dc inverter module /sensor that is killing off 3 batteries now that i installed in 3 months, and toyota dealers wont fix unless it shows error but its a recall so since problen should fix this recall but wont pay for it to fix it even though it a recall right now that is not expired. im upset 3 dealers wont do it unless then charge me to do it. when toyotal mfg take it to any dealer and they will fix free but no one will do it. toyota mfg needs to make these dealers fix these 2 recalls on this car that can kill me and my passengers and anyone on the road that i could hit by not haivng controll brakes or the hybrid system shuttong completely down and could even kill a pedestrian with these 2 recalls that dealers wont fix but mfg said they need to everyone with these cars i see are having these same problems. need make the toyota mfg and dealers fix these free of charge before more people get killed injuried or cause more accidents ,

Toyota issued a recall with a limited time for Prius brake booster/actuator failures. This issue is known to present brake failures and necessarily place drivers, passengers, and pedestrians at risk in the case of such brake failures. Toyota made no effort to proactively remedy this problem and further neglected customer safety by excluding Priuses with the same manufacturing issue from the recall, under its 10 year 150,000 mile requirement. Whether or not the Priuses have been driven 150,000 miles or 10 years the nature with which the malfunction presents represents a safety for any driver.

The ABS Pump( Accumulator and booster) are regularly failing on all Toyota Prius( 2010-2015). When the ABS pump starts to fail, the warning lights for Traction control, Brake and ABS come on. These lights come on at all speeds and its very hard to bring the vehicle to a complete stop when this happens. The brakes completely stop working and the brakes become rock solid. The brakes become so hard that they can’t be possibly be depressed to stop in time. I nearly missed getting killed from this as I am out of country and Toyota is refusing to fix it since its not a recall and I am in Canada. Toyota is asking $3500 in parts and $1500 in labor to repair. I can not afford it and this issue is on all Prius from 2010-2015. This is a major safety hazard and can cause serious injury and damage. Toyota is refusing to repair it since they believe the cars are out of warranty. However Toyota has been notified about this safety hazard arising on all Prius(2010-2015) but decline to respond or take action. I urge NHTSA to take action and get this resolved as the ABS brakes failing on the Prius can be really dangerous and can cause life threatening accidents.

Passenger side low beam headlamp has continued to need to be replaced. I was not made aware of a "customer service protection program" on this and when I contacted Toyota they said it was too late for the repair, electrical harness, to be covered by their extended warranty. I never received information regarding the extended warranty. They stated they sent it to the correct address. But just because you mail something doesn't always mean it is delivered to that address. Also, I had my car serviced many times at Toyota dealerships and they never informed me of this extended warranty. If I had been made aware of the extended warranty I would've had it repaired in a timely manner. I have spoken to two representatives of Toyota and they stated they could not help me. I'm wondering why this is not considered a recall issue as it does affect the safety of driving a vehicle and the lights stop working. This may not be the right place to ask this question but I'm hoping someone in your organization can help me.

see all over the internet that 2010 Prius have a recall for Inverter. I called the dealer they said no recall with my vin. I was told that a new inver is almost $5000 dollars. i NEED HELP i HAVE BOUGHT 3 TOYOTA ALREADY. Please help me with good will or warrenty the inverter like you have so many other people with 2010 Prius. If not I willand my family will never buy a Toyota again. Please call or email me [XXX] [XXX] The Prius died when driving and we almost got in a major accident because it stalled with no warning. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Total malfunction at highway speeds. Very unsafe, the car completely shut off. This may have resulted in a highway fatality due to collision as the vehicle was in the fast lane. NTSA please do your due diligence and investigate the faulty, defective HYBRID system as I believe the faulty inverter recall is much more larger than the original recall

My 2010 Toyota Prius hatchback suddenly had 4 or 5 warning lights appear on the dashboard and my brakes failed to function properly. It felt like the power brakes was turned off ! Although I did get the vehicle stopped, it surely was a dangerous situation. I understand that Toyota knows about this problem, and have read that it was warranted if this happened before 150,000 miles. My Prius has approx 167,000 miles right now and to replace the Brake Actuator, the cost will be $ 3 - 5 thousand dollars…absurd amount in my opinion. Since this critical feature (brakes) has a long known history of being faulty on Toyota vehicles it should be warranted for at least 25 years and at least 300k ! My Prius is “unsafe to drive” and is nothing more than a paperweight…I repeat, Toyota knows, and has known about this defective brake actuator problem for years and years!!! Please lean on Toyota to up the warranty of this faulty brake problem for the MANY, MANY Toyota owners who have purchased the Toyota product and and NOT screwing the public like they are doing now !

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

It is a known problem that Priuses manufactured from 2004 to 2015 have issues with the brake master cylinder and brake booster accumulator. When the vehicle computer recognizes an internal leak (ABS C1391) or other issue in the accumulator pump, it completely disables the regenerative braking system, which significantly reduces braking power. In my case, the problem is intermittent, and the vehicle computer will occasionally clear the code and operate normally. A slight whirring sound can still be heard (indicative of an internal leak), leading me to conclude that the part is still damaged, even when the code clears itself. This continues to affect my and my passengers' safety because the problem comes back with no warning while driving. Many times at highway speeds, the regenerative braking system will shut off while decelerating. This has caused scares and near-accidents. Imagine you are approaching stopped traffic while traveling 65 miles per hour. You press the brake to start slowing down, and while decelerating, the dashboard lights up and the brake pedal goes spongey. Now, you must slam the brake all the way into the firewall to engage the disks and pads exclusively. Aside from the imminent terror of hitting the car in front of you, now you are skidding on the brakes, worried the car behind you will crush the rear. Sooner or later this will cause somebody to get into an accident when a split-second decision cannot to be made quickly enough. The issue is well-known, and a warranty recall was issued, but it does not cover any vehicles over a certain age and mileage. It has been reproduced by my local mechanic and inspected by a Prius specialist, who both quote about $3800 to fully replace and recalibrate the failing parts. There were no indicators of this issue before it happened to my wife and I the first time on the highway. While I am grateful that nobody was injured, the situation could be completely different had the problem occurred just seconds later.

Car slows down to a stop when driving on the freeway. With no power to accelerate, it makes it hard to get to the side of the road to be towed. Been to the dealer twice to address the problem, and was told that if I don't pay $200, that there is nothing they can do. Then when I did pay the money for evaluation, they told me the problem could be one of several things that would start the never-ending process of repairs that will keep me paying until they solve it. I would think that with a $200 code reading, that the dealers software could narrow it down to the exact repair needed. I mentioned to the dealer about the JOV update I had done earlier to the car, but dealer refuses to recognize that there is a recall on my vehicle, and that I needed to pay money(that I don't have) to do anything. My check hybrid system light and orange triangle comes on when the car dies

I was driving home from work when all the warning light all came on at once. The car suddenly stopped accelerating and the “check hybrid system” was showing on my dash. I was lucky enough to be going down hill so I can make it to a shoulder to get off the road. Tried troubleshooting everything but to no avail and needed to get towed because the Prius would not move at all. Haven’t got the vehicle checked yet because the vehicle will not move and can only be moved if towed.

I had just gotten back in my car from a quick store trip. My prius turned on like normal but soon after when I was driving different kind of warning lights turned on. My steering was affected ,the car slowed down considerably to the point I was almost rear-ended. The triangle of death, check engine, brake and steering lights all came on with the check hybrid system warning. Before this i had no prior issues with my car. I had it checked by an independent mechanic who states it is the inverter that caused this

2010 Prius started up in the garage 3 hours after being shut down. I am certain the car was NOT still running while we unloaded groceries from hatchback and left the garage. * Nothing was retrieved from the front seat so no accidental start could have occurred. * My son "heard it start" almost 3 hours after the vehicle had been shut off while in another room near the garage. * I heard nothing from the upstairs. * The Prius key fob was nowhere near the vicinity of the vehicle at the time it started nor was any person. In fact, both key fobs were upstairs and only the currently used 1 had a battery and was stored inside a tin so as to always know where it was. *Toyota executives were made aware of incident but essentially denied the Toyota could start without the key fob: "Toyota is not aware for any possible way for the vehicle to be started without the key."

The ABS, Brake, and traction control light came on. The braking became difficult. The car did stop but if it was in an emergency circumstance there may have been a collision. I called Toyota about the issue and was informed that there was a brake actuater and master cylinder issues with this make and model. Toyota replaced them in cars that had this issue under a special warranty that was over in 2021. It is a $3500 issue. I purchased this car new and have never received a notice about bad braking system. I have lived at the same address since the purchase. Toyota informed me that notices were not sent out, however if the owner came in with this issue before 2021 it would have been repaired and replaced. I can not understand how ALL owners were not informed. I do not understand how a recall wasn't enforced. I live in Florida where the speed limit is 70mph. This could have been deadly. I looked on forums online and apparently this has been an issue for many many 2010 Toyota Prius. I have a case in with Toyota American. 220701001489. I can use any help I can get with this issue. It may save a life.

Hi- I have a Toyota Prius 2010 model and I encountered a braking failure yesterday. My ABS lights, brake lights and another light came up on my dashboard of the car. Upon diagnosis, I was informed by Toyota dealership that my car has a faulty C1391 - Abnormal leak in accumulator. This condition may be caused by small internal brake fluid leak inside the brake booster assembly with master cylinder. This is a known issue by Toyota and lots of press coverage on this issue since the past few years. I was told today that if this issue occurred within 10 year or purchase or <150K then the repair work would be covered by Toyota. I purchased the car in 2010 and I past the 10 year mark but mileage coverage is 125K (<150K). Toyota is unwilling to bear the cost and would want me to pay for the fix. This is a known issue with Toyota and the braking system can fail anytime before/or after 10 year mark. It is now costing me $3000 to repair. I am shocked with the Toyota's response in this matter. There are lots of blogs I read online who have similar issue. Class Action lawsuit: https://www.classaction.org/news/toyota-hit-with-class-action-over-alleged-refusal-to-fix-braking-system-defect-in-hybrid-vehicles Here is one example: https://www.youtube.com/watch?v=xA9jyrbZDWo Thanks.

Hazard lights flashing, flashes faster at higher speeds. Hazard button useless. Mechanic not sure what is the problem; reset codes. Problem went away for a few days and then came back.

I was driving on the road and right before a stop light my car jumped as if someone hit me from behind. After looking in my rear view and seeing no one on me I realized something else happened. I look at my dash and check hybrid system light was on. I was in traffic at the light waiting and looked it up on my phone to find out what to do. Some article said to pull over and turn it off and restart it. The light turned green and traffic started moving so I started to drive. I thought I could probably make it home but the car started driving a lot slower than usual. I really didn’t want to pull over because it was in a bad part of town but I felt like I had no choice because the car was barely moving. It seemed more dangerous to be on the road with other drivers. So I pulled over and parked and tried starting it again. It wouldn’t shift to drive so now I’m stuck and can’t get home unless I pay to get my car towed. I get my car towed to the house. I put a meter on the battery and it was fine. I put a diagnostics tester on it and came up with these codes POA1A and POA94. I contacted hybrid mechanic that doesn’t work at Toyota and he said to take it in to a dealership and sent me the ZE3 warranty letter and said they would fix it. I paid for it to be towed to the dealership. There were already a lot of cars waiting to be serviced when I got there. Anyway, they said they would fix it after they did their diagnostics after I paid $120 for it. That was 3/21/2022. I sent CSR the ZE3 letter and he said it wasn’t covered. It’s like he didn’t even read it. A day later he said he needed to talk to a warranty administrator then a day later he said it would be covered but I don’t qualify for a loaner but they can give me a rental for $45 a day. I friend let me borrow their car for a couple days. Now as of writing this it’s midnight 3/30/2022. I still don’t have my car and I’m about to be without a car unless I buy one or rent one. No ETA on the part being delivered either. I’m SOL.

Brake Booster Failure; has been inspected and confirmed. Warning lamps for traction control, ABS, Brake System Lights, Master Warning Light all came on during normal city driving. Immediate loss of Brake Assist causing sudden need for much more distance while stopping the vehicle. Clearly, sudden changes in brake behavior is a safety concern and this problem seems to be well documented as common issue in this era of Toyota vehicles. I believe Toyota has fallen short in its efforts to remmedy the situation. An extended warranty was issued but it was for a brief period of time that required this problem to occur within a narrow window. It's a wildly expensive repair to a critical system and it seems to be a common problem in these cars.

Last week I check hybrid system message appeared on the screen and orange triangle with check engine light. I took it to the shop and they said that there are code P0A94 wich is related to the inverted and that is needed replacement. I saw that there was recall on inverter and want to see if I can get it replaced. Thanks