general problems of the 2010 Toyota Prius - part 1

Brake booster, brake accuater went out even after the recall. Dealership said they could do nothing to help.

Check hybrid system warning lights came on and I lost all ability to drive vehicle and had to coast to the side of the road.

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.

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

I was driving in my neighboorhood and as I went up the wall bridge my acceleration stalled and my abs light, check engine light, and check hybrid system light came on simultaneously and started beeping. At the same time, I lost my braking ability completely. I had to swerve off to the grass in the hopes of not hitting turning traffic at the stop sign. Luckily, it stopped before doing any major damage to anything. Thankfully, I was close to home and was able to put it in my driveway safely. The check engine light then cut itself off, but my brakes remained completely nonfunctional. If this had happened on the highway or a busy road I'm sure it would’ve been much worse.

The abs, vsc/traction control, and brake system warning lights all came on at the same time in my 2010 Toyota Prius. I almost lost control of my car's braking ability. Afterwards, the hybrid system does not perform its regenerative braking/recharging any longer. And the cruise control mode doesn't work also. The dtc from the obd2 port is c1391 - abnormal leak in the brake fluid accumulator. I found out that this issue is widespread among gen 3 Priuses, but Toyota has not made this officially a recall campaign, but classifies it as a "customer support bulletin. " but the issue is dangerous enough that it should be a recall item. I moved homes in fall of 2018, and Toyota says it mailed out a letter about this brake issue and resulting campaign, but I never received the letter. I was totally unaware that this was a safety issue, that Toyota acknowledged it, and that this safety issue with an ongoing "recall" campaign with an expiration date. Toyota denies that this is a recall issue, and will not provide this service. I would like for NHTSA to reopen and investigate this issue, and make Toyota issue a general recall campaign to resolve this dangerous safety problem with the car.

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.

Traveling at freeway speed just after midnight, the "check engine" light came on. Less than one minute later, the "check hybrid system" alert came on, with an exclamation mark inside of a yellow triangle symbol displayed. The vehicle instantly had no power when the accelerator was depressed. The vehicle coasted to a stop and would not shift into drive. The vehicle was towed to our home. Upon delivering the vehicle to our home, the tow driver used an emergency battery jump start device and the vehicle was able to shift into drive and be driven into the garage. The 12 volt battery was replaced the next day and the vehicle no longer exhibited any disfunction. This was an unexpected event with no warning that the 12 volt battery was in need of replacement. It could have resulted in a serious collision, if the freeway had been more congested, as the vehicle had been immediately driven 2 lanes over to the nearest exit, and came to a stop just after exiting, safely at the side of the road. This is a very dangerous safety condition that should have had some type of alert that the simple 12 volt battery system was in danger of failing, causing a catastrophic failure of the engine and power train. Or, the car should simply not be able to drive, if the 12 volt battery is that low, to ensure passenger and community safety. Prime example: Toyota Prius has a warning alert that the key fob battery is low. The warning gives you a couple of weeks to replace the battery, and repeatedly displays the warning whenever you power up the vehicle.

Recalls.

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.

1. This 2010 Prius has a faulty design of the piston rings, which is allowing it to burn more than 1. 4 qts of engine oil. 2. Such high consumption of engine oil causing an environmental pollution. 3. Furthermore, I took it to the local Toyota dealer I. E. Maguire Toyota located in ithaca, NY, they never chose to diagnose it or repair it. 4. I reached out to the Toyota and the Toyota still isn’t helpful w. R. T this high consumption of engine oil.

While driving at highway speed on interstate 87 in new york, the 2010 Toyota Prius suddenly lost power while multiple warning lights on the dashboard illuminated, along with a "check hybrid system" notification. The engine would operate but at significantly reduced power. I drove it to an independent garage to identify the diagnostic trouble codes, which included p0a94 and p324e, an inverter problem with the hybrid battery and a problem with the intelligent power module. The currently is currently awaiting a confirm diagnosis at a Toyota dealership in new jersey, but the problem is exactly what thousands of other 2010 - 2014 Prius owners have reported, yet Toyota has yet to issue a recall to replace the inverter.

Check hybrid system light ignites, slows down vehicle in middle of high speed highway. First incident November of 2020 then several incidents after. Repair shops don't assure problem according to error codes & they recommend possibilities they cannot assure will resolve the problem. Car was taken into local dealership after receiving recall notice for software and airbags prior to November 2020 when the issue began. Software update took a couple of hours. Restart/reboot temporarily allowed driving again. Most recently the system entirely shut down & the car will not start or run. Abandoned car on side of the road and got heat exhaustion from walking the rest of the way home and had vehicle towed. Error lights come on including "check hybrid system" says "shift to p position when starting" and will not allow start.

Car stalls while driving and and check hybrid system notification lights up on the dash.

Car shakes badly when changing form electric to gas motor, started smoking in the back.

Vehicle shuttered and warning lights came on while driving on busy roadway. Was able to pull onto side street and stopped vehicle. Outside temperatures were over 100 deg f and my wife was alone with the vehicle. Attached mechanic estimate lists codes and indicates the inverter failed. We had the ecu updated in 2016 to avoid this failure but believe Toyota's ecu flash failed to fix the issue. Subsequent extended warranty did not cover this vehicle's VIN # according to Toyota dealership we contacted on 05/29/2020.

Toyota USA failed to honor repair defect within the brake booster pump assembly. When this defect occurs, various warning lamps on the instrument panel made illuminate, I experience increased stopping distance, reduced hydraulic pressure within your brake system, the deactivation of brake assist, & the deactivation of vehicle stability control. Toyota previously issued at least 2 safety recalls. Designed to prevent similar dangerous occurrences. However, hundreds of thousands of Prius models 2010-2015 were excluded from those safety recalls including my 2010 model. As of today Toyota USA filed case number 2005052305. Safety recall in torrance California dated June 4, 2013 stated Toyota sales USA was conducting a voluntary safety recall involving over 87000 model 2010 Toyota Prius however I called Toyota today and the insisted my vehicle was excluded even though in barely has 100000 miles we just began to experience these brake symptoms. Customer rep insisted it was Toyota voluntary recall not enforced so my vehicle did not even qualified for a customer support service. Please help us have Toyota fix this safety issue ASAP before someone has a mayor accident. Warning lights for abs, stability control, and warning lights all came on at once. Brakes became spongy when pressed. Was able to still brake but with much more effort and not confident in the braking. I had it towed to a local mechanic and the diagnostic error code registered "c1391". Per mechanic this is for abs accumulator, or booster pump failure or leak per mechanic. This happened out of the blue, no warnings. Per Toyota the part required are cylinder assembly brake and brake pump assembly. Cost to repair these parts per Toyota would be estimated at $2700. . Attached video of actuator's loud noise it produces & dashboard showing abs failed& brakes lights/also failed attempt to solve this with Toyota USA.

Hybrid system shut down while traveling. Loss of power hazard. Hybrid system malfunction indicated along with loss of traction and trouble indicator on dash.

As I was driving 55-65 mph on the highway, the check hybrid system alert came on, and all of a sudden I lost power. I was able to make it home but going up hill it would not go faster than 35 mph, and 40-50 mph on flat ground. This happened on a busy highway where the average speed is 55-65 mph.

I took my 2010 Toyota Prius to dealer ship for a software update, and now the hybrid system kept having problem, once I disconnect the 12v battery, the car will do fine for like a week, then the hybrid system will shut down, it didn't happen before the software update.

A number of things have failed on this car. 1. The hybrid battery pack system shut down and warned that I needed to see a mechanic. My mechanic diagnosed that the hybrid invert was defective and causing the battery pack to fail. 2. When braking at both low and high speeds, the car increasingly struggles to come to a stop. When applying foot pressure, you can hear the pump winding - this occurs while at rest as well as when trying to slow the car down. There are times when applying the brake that the floor pedal will lock and cause the car to skid while barely reducing the speed of the car. I have had multiple near accident incidences as a result and put myself and others at risk. 3. The car ferociously vibrates every morning - discovered that the head gasket has failed prematurely and due to the car overcompensating for the failing hybrid battery that is being impacted by the failing hybrid inverter. All problems have been reproduced and diagnosed at independent service centers. Multiple codes, warning lights and messages have alerted me to engine and battery issues - all of which appeared after the various issues and failures.

The cars starts does not stay on if I try to drive it will turn off and die out .

Car worked flawlessly and we maintained it regularly. Took it in to address recall of jov update pwr mgmt ecu at dealer. Dealer completed recall work. 2 days later engine lite check hybrid system and the ! on and triangle on. The car continued run but now was studdering when was not before the recall work. Took it back to the dealer and he said we need a new hybrid battery. We believe the software update they did created a this issue. Dealer acting ignorant and saying it needs new battery because of number of miles on car. Asked for diagnostic print out from when they did recall work to they new diagnosis and they would not provide. We believe the recall update created a technical problem with our hybrid battery. We also believe that dealer not being honest regarding issues with this recall update and is using it as an opportunity to reduce liability for Toyota on failed recall work and to use it as an opportunity to bring in large ticket sales repair ie they quoted us a new hybrid battery for 5,500.

Tl- the contact owns a 2010 Toyota Prius. The contact received notification of NHTSA campaign number: 18v684000 (hybrid propulsion system) however, the parts to do the repair were unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The stevens creek Toyota 4202 stevens creek blvd, san jose, CA 95129 (408) 984-1234 was contacted and confirmed that the parts were not available for the recall remedy. The manufacturer were not made aware of the failure. The contact had not experienced a failure. Parts distribution disconnect. Dr.

While driving on the highway, service engine light came on, and car began to lose speed -- only permitting travel at about 50 mph. Within a few minutes, the car shut off entirely. Fortunately, was able to get to side of road but this could have been extremely dangerous due to lack of warning, and fact that was driving on a highway where others are going 60-70mph or faster. The inverter overheated and needed to be replaced. This issue was part of a recall, but did not include my year/car. Extremely upsetting that Toyota does not recall it or at a minimum send a warning to owners to have this looked at. This can cause potentially fatal accidents, and Toyota seems to be aware of the issue.

Recall notice eoe was performed on my 2010 Prius to correct an invertor problem. A software update was performed. According to my dealer at capistrano Toyota as well as other dealers this was just a bandaid and not a true fix. The owner of capistrano Toyota as well as other Toyota dealers have written to Toyota that the invertor needs to be replaced. The dealer h,s had many cars come back after the software fix and had to have the invertor changed. If the invertor fails while driving, the car can possibly just stop running or slow down to 15 miles. This will be very dangerous and possibly deadly.

Vehicle has lost power on the freeway multiple times forcing me to pull over. In one instance I was almost rear ended by a semi. The vehicle will show a temperature warning and will then shut down and read, "check hybrid system". The Toyota dealership claims it needs a new engine. This is a well known issue and will go in front of a judge in January. I have contacted Toyota about this and they tell me it is out of warranty and not eligible for the warranty enhancement. This should have been an unlimited mileage recall but Toyota refuses to do anything about it. This happened again this morning to my wife who was on a freeway where the speed limit is 70mph. This is an extremely dangerous error and I would hate to see someone die because their car stops on the freeway. This vehicle has also had severay p0401 codes, there is an warranty enhancement for this as well but limited to 150k miles. I was told by the Toyota dealership it was also a culprit for a blown head gasket.

Leaving a parking lot driving at under 20 mph, 'check hybrid system' flashed with engine icon appearing; ambient temperature at 104 degrees. Drove home and connected wifi elm 327 that displayed p0a080 dtc. Failure mileage 152510 just outside 150k California emissions warranty but below 10 year warranty at 9 years and 2 days failing 07-16-18. Drove to nearest Toyota dealership 07-17-18 who diagnosed dtc p0a80 p0a3000 to battery blocks v06 12. 67 volts, v07 13. 91 volts. V05 14. 14 volts, v09 14. 18 volts, v10 14. 18 volts. Detail code 1 is 123. Poor fuel mileage and oscillating charge discharge of hybrid battery pack began 02-09-2015 at 91,036 miles typically 42. 7 mpg. Toyota motor sales denied good will assistance request citing out of warranty case # 1807172401. Remedy is replace hybrid battery pack at near $4k with core exchange.

On 05/12/2018, the vehicle was in motion, merging onto the freeway, when the check engine light came on and the message "check hybrid system" was displayed. The vehicle was not driveable at normal street speeds and had to be towed off the freeway onramp. The vehicle was towed to a Toyota dealership on 05/16/2018, where the diagnostic found that the inverter needed to be replaced. The diagnostic did not find any other fault codes. The inverter was replaced under warranty. Then, 3 weeks after the completed repair (less than 200 miles), on 06/11/2018, the vehicle was stationary and idling when the check engine light came on and the message "check hybrid system" was displayed. The vehicle was towed to the same Toyota dealership, where the diagnostic found that the fault code was with the hybrid battery this time, when it previously had not been an issue. After the code was cleared, the vehicle was 100% driveable and taken home while we consulted options for alternative repair or diagnostics.

Brake actuator has failed. Traction control, abs, brake lights illuminated on dash. More effort needed to engage brakes. This affects the regenerative braking as it no longer charges on braking as it was designed. Checked Toyota website for recalls since this is safety related, and there are none. Which is quite disturbing. I've researched Prius forums and this seems to be an ongoing problem. Toyota issued a recall for the generation 2 model, however this seems to be a problem for generation 3 models as well. The problem did occur when on the highway traveling at 60 mph.

Toyota inverter failure. My specific VIN wasn't included in the recall, but the ipm did fail, in the middle of the street, while driving, my car lost all power & went into limp home mode. Fortunately the street wasn't busy & I wasn't struck by another vehicle as I had my 6 week old newborn in the car with me. I had dutifully checked to see if my car was involved in the recall & it wasn't, even though it failed. They only fix it after it fails, which is outrageous. Someone is going to die when their Prius loses all power while driving at highway speeds.

At about 125k miles, my Prius nearly ran out of oil between services, and I religiously service my vehicle. I burned 1 to 2 quarts between services since. At 272,408 miles, I just paid $5751. 59 for a complete engine rebuild. . . Rest of car is in great shape. Oil consumption problems were known by the dealerships, but I was given no recourse except dealing with it. Latest issue. . Check engine light on, misfire on cylinders 1 and 4 (progressing to all), horrific knocking noise with sound of rushing water upon start-up. Eventually, (once the cylinders fired significantly) the engine could run satisfactorily for the remainder of the drive. . . Until the next start. Early on I read that Toyota knew of the under-engineered motor of the 2010s, but I have not received anything announcing a recall or care to fix their engineering issue. I have my service records to validate the care I've given to my car. The date of the engine rebuild is what I will provide as to when this happened, but the oil consumption began years ago.

I had a sudden loss of power with a popping sound. The failure nearly caused an accident because I was turning into a traffic lane. This left me stalled in that lane of traffic. The failure turned out to be the inverter over heating was caused by the cooling pump in the inverter failing, which caused the inverter to overheat. This was not covered by warranty and was a very expensive repair. I chose not to have the dealer repair it at their extreme prices. I paid the dealer to diagnose the problem. Then I had greentec in olathe KS. Repair the system at 1/2 the cost that the dealer wanted.

Water leaking from engine cowel getting into ignition coils which is causing engine to shudder and stop sometimes too. Seems to be a known Toyota issue yet not being rectified by manufacturer. Seals seem to allow water to get into the ignition coils hence the issue. Vehicle is stationary when first observed then shuddering and misfiring occurring as vehicle is being driven also leading to loss of power as its being driven which is quite dangerous on highways.

Hybrid battery complete failure while driving. Owned the cars 7 years since new.