Electrical System Problems of Toyota Prius - part 1

Brake actuator failure requires actuator and master cylinder replacement. All dash lights came on while driving. The vehicle was diagnosed at brian easler Toyota in hendersonville north carolina. The brakes are still operational temporarily but spongy and expected to fail so the car is not drivable. I expect to have the actuator and master cylinder replaced in then next few weeks at a cost of $5600. I see there were previous recalls on the braking system that have now expired.

See all problems of the 2013 Toyota Prius 🔎.

The hybrid system fails to enter “ready” mode with no smr engagement audible from the junction box. Dashboard displays abs, brake, engine, and master warning lights. Obd codes include u0142, u0155, and previously u0073 . Rear brake lights function normally when pedal is pressed. Dealer said to pay 250$ for diagnostic and diagnosed incorrect voltage from brake light switch and quoted $348. 94 to replace, but refused to proceed with open safety recall j0v / 18v684 (NHTSA 18v684000) citing inability to achieve “ready” mode. Recall covers inverter failure leading to loss of motive power. Dealer declined to jump 12v battery or use external power to perform required software update and inverter inspection. Vehicle remains inoperable and poses safety risk due to sudden power loss potential. Component (inverter g9200-47141) available for inspection. Problem confirmed by dealer diagnostics. No police or insurance inspection. Warning lamps appeared after 12v battery replacement three months ago.

See all problems of the 2012 Toyota Prius 🔎.

The contact owns a 2014 Toyota Prius v. The contact stated that while driving approximately 35 mph, the brake light, tire pressure, traction control, battery, and other warning lights were illuminated. While attempting to depress the brake pedal, there was more resistance than normal, making it difficult to slow the vehicle. The contact was able to drive the vehicle to the nearest mechanic; however, the vehicle was not diagnosed. The vehicle was then taken to the residence. The vehicle was taken to another certified mechanic, who diagnosed and determined that the brake master cylinder and actuator assemblies had failed. The brake master cylinder and brake actuator assemblies were in the process of being repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 220,000.

See all problems of the 2014 Toyota Prius 🔎.

The two outside rear view mirrors on the 2026 Prius have an adjustment problem. When attempting to adjust them they will freeze (won't move), move intermittently, and jerk. The Toyota dealer told me that it is a known problem and all 2026 Priuses have the same problem. He further informed me that Toyota is aware of the problem. He went to another new Prius on the dealership lot and found that its outside rear view mirrors do the very same thing. This is a serious safety issue and the manufacturer should address and remedy it. Toyota nor the dealership have a fix for this problem.

2013 Toyota Prius v. 64,000 miles and abs light is on also vsc warning light and brake light. There has been many issues with this type of vehicle as I researched on internet. I didnt know there has been a recall on this vehicle. And I did not make it time. 10 yrs or 150,000 k whichever comes first. Many other vehicles this year have this problem its common. . I cannot brake in time because now its using my back brakes. Dealership said brake booster pump and brake master cylinder.

Abs complete and total failure while driving.

My 2013 Toyota Prius has a failed inverter/converter assembly, including the intelligent power module (ipm). This component is critical for vehicle operation and designed to last the life of the car. Premature ipm shorting and inverter failure is a known defect acknowledged by Toyota through multiple recalls and service campaigns for other vins with the same part number. My vehicle is giving codes p0a94 and p0a1a which are also listed in the recalls for other Prius models of similar age. My vehicle experiences the same failure, yet Toyota has denied goodwill coverage, claiming “insufficient service history. ” routine maintenance like oil changes and brake inspections does not affect this component, making the denial unreasonable. There is nothing to service on the inverter. This defect poses a serious safety risk, sudden inverter failure caused total loss of power while driving and loss of power steering, it was difficult to pull my car off the road. This poses a danger to drivers, passengers, and others on the road. Toyota’s exclusion of my VIN from coverage leaves me financially responsible for a known safety defect. I request NHTSA to investigate Toyota’s handling of inverter/ipm failures, the denial of goodwill assistance for affected vins, and ensure that Toyota addresses this life-threatening defect consistently across all affected vehicles instead of narrowing the scope on who gets coverage when this is a dangerous electrical malfunction.

Got the warning code for c1391 for the brake booster. It failed at 140k miles but because it failed past the 10 year mark did not qualify for the Toyota extended warranty program. I don't think the warranty program is good enough and should be addressed as a recall. I had sudden total brake failure on the highway which could have been extremely deadly.

See all problems of the 2015 Toyota Prius 🔎.

The contact owns a 2005 Toyota Prius. The contact stated that while driving at an undisclosed speed, the left turn signal was activated, however, the left turn signal failed to function as intended. In addition, the contact stated that the four-way flashers failed to function as intended. The vehicle was taken to the dealer where it was diagnosed with a computer failure. The contact was informed that an unknown part needed to be replaced, or an unknown software update was needed. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The contact referenced an unknown recall with a similar failure description; however, the VIN was not under recall. The failure mileage was approximately 143,500.

See all problems of the 2005 Toyota Prius 🔎.

Randomly, the car have a delay of approximately 2 seconds when I hit the gas pedal. It happened multiple times, 2-3 times per day. The gas pedal can pe pressed to the floor, it won’t react. After 2 seconds or so it will react and drive normally. I noticed this is happening when the car is in ev mode ( I’m either stopped at red light, or I’m slowing down a bit/taking a turn. This is a hazardous situation and very dangerous.

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.

Front door locks defective. Remote control doesn’t open the doors, even after replacing battery in key fob. It started with the driver door and now the passenger door doesn’t lock or unlock.

See all problems of the 2023 Toyota Prius 🔎.

While driving, one spot on the left side of my steering wheel suddenly got very hot. There are now two small circular indentations where the steering wheel covering has melted. This has happened at least 3 times in the last week or so. I have scheduled service on 8/4/25 at my local Toyota dealership (vineland, NJ) to check it. I am not parking it next to my house in case it decides to catch fire. My vehicle was involved in a collision back in may 2024 and was fixed by caliber collision vineland-xd 3181 s delsea dr vineland, NJ. Both driver's side and passenger's side front fenders had some damage, and the hood was pushed a bit from the passenger's side to the driver's side. Was not moving fast, maybe 5 mph, when hit by someone driving at an unsafe speed. Maybe that and loosened a wire, maybe not. Reporting due to fire possibility.

See all problems of the 2022 Toyota Prius 🔎.

Brake getting stuck on the floor would have to press on brake really hard just to get a response, this will happen out of the blue! driving in highway or just driving off the driveway. I almost hit a car in front of me due to lack of brake, I had to swerve to the side! first appear 1 day after buying the car. . This issue needs to be worked on right away.

Failure of the intelligent power module (ipm) within the inverter assembly.

The odometer on my 2004 Prius stops at 299,999. This is a known problem in the 04-05 models that was corrected in 2006. Leaves me unable to track miles for maintenance and other uses. This also has the problem with the entire digital dash going dark which means no speedometer or gas gauge. Making the vehicle almost unable to be driven safely at this point. I have reached out to Toyota and they verify that it was an issue with this year range but because I have owned it too long they don't do anything about it.

See all problems of the 2004 Toyota Prius 🔎.

I purchased my 2015 Prius c in July of 2016. Since then I have consistently had issues with the lock actuator going out on various doors. As follows: 3/12/18 - driverside 6/13/18 - passenger front 8/3/20 - driverside 8/5/22 - rear driverside 12/16/22 - passenger front 3/14/23 - driverside and now in July of 2025 the driverside actuator is failing, again. The previous times were covered by my warranty, but that ended in 2023. My car is also kept in a garage. The dealership attempted to blame this issue on the elements, but come on. . . If that was the case, this would be happening to all sorts of various cars, and it's not. This is an issue for a variety of reasons, one being I am unable to access getting into my vehicle with the door lock that is not working. I currently have to go to my passenger side and crawl over to unlock my driverside door. If I needed to get into my car quickly, I would be out of luck. This is ridiculous as this is the seventh time a lock has gone out - making it about every year and a half that a lock needs to be replaced - and the 4th time for my driverside. How is this not a recall issue???.

2013 Toyota Prius v has 3 recalls for the same issues but my VIN # says there isn't any recalls associated with it. I need help. It stalled on me on my way home from work luckily not on the high way now it's throwing code c1310 c1259 c1241 it won't crank all it does is click. I replaced 12v batterychecked all connectors.

We were driving on a city street about 25-30mph and the car jerked suddenly and the lights on the dashboard illuminated and the "check hybrid system" message came up as well. The car was able to coast to a nearby parking lot. We attempted to drive the car home and the car stalled in the middle of the street. We were able to push the car off the road and then get it towed. The presented a potentially very dangerous situation as the car had a complete failure while driving in the middle of the road. The Toyota service department ran a diagnosis which returned dtc p0a94. All of this indicates that the car should be covered under the customer confidence program 23te03 however that program seems to only cover the 2010-2015 Prius and 2011-2017 Prius v models and not the Prius c. There are several reports of this same issue happening on the Prius c as well though so it doesn't make sense that it is not covered.

I recently took my vehicle to the dealership because all the hazard lights on the dash came on. They diagnosed it as an issue with the inverter water pump and suggested that the engine was overheating, which was causing the hazard light to appear on the dashboard. So I had them replace that part and everything was fine. A week later, I went to drive to work and my entire dashboard was out. My radio, clock, blinkers, and brakes worked, but I could not see the speedometer, gas gauge, odometer or any other dashboard features. When I tried to restart the car, it wouldn't turn off. I tried several times and even got my husband to try. When we couldn't turn it off, I drove blindly straight to the dealership. They diagnosed the issue as being a problem with the combination meter. Recently, I found out that there was a customer support program through Toyota that replaced the combination meter in my same car model. This service expired in 2017. I got the car in 2020-21. Thankfully I was home, and was able to follow my husband to the dealership. I'm not sure what I would've done if this happened while I was out. I am also have traction issues with the brakes. When I try to brake on a slope or incline, the glide hazard lights come on. It's happened several times when it's raining, but it's been happening more when it's not. I typically give enough space between myself and the car in front of me, but it's concerning that the brakes lock up when I'm on any type of sloped surface.

See all problems of the 2008 Toyota Prius 🔎.

The vehicle stalled while driving 35 to 45 mph. Engine had no power but the brakes and power steering worked.

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.

See all problems of the 2010 Toyota Prius 🔎.

The wireless charging in my vehicle and others have reported the same problem. The phone gets so hot to the touch while charging that it is causing cell phones to shutdown and possibly damage them. There needs to be a update to provide cooling air to the charging area to avoid customers phone damage or worse a possible fire due to the extreme temperature the phones are obtaining.

I am writing to express a complaint regarding the issues I have experienced with the brake system of my Toyota Prius c, 2012 model. For the past several months, I have noticed that the brakes exhibit strange noises, soft pedal sensation, reduced braking efficiency, were driving and the abs, traction, brake, and that other light turned on and the brakes became slow these issues have been observed on multiple occasions and pose a safety risk to myself, other drivers, and pedestrians. I have taken the vehicle for inspection, but the problems persist or have not been definitively resolved. I believe these faults may be related to defects in the braking system, and therefore I request a thorough inspection and necessary repairs at no cost, considering that the manufacturer could be responsible for manufacturing defects.

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 of a car accident when the car suddenly no longer brakes how the driver is used to. Toyota has previously offered an extended warranty on the part, but the part did not fail until shortly after the warranty expired. The car has been within my family since it was originally put into service and none of the owners were ever notified that the part could be replaced or even fail in such a manner. The problem has been confirmed by a dealer but they have only offered to fix it at a significant cost. The vehicle does not feel safe to drive. Warning lights only appeared after the part failed but they weren't particularly helpful in diagnosing the problem in the moment because 4 different lights turned on all at once.

Car was driving fine one day and then while driving down the interstate I had the pre collision system malfunction error, brake light came on, cruise will not operate, abs light is on. After much research it seems Prius v has a common issue with brake booster faulting.

See all problems of the 2016 Toyota Prius 🔎.

The brake booster assembly (part number 47070-47060) on my 2013 Toyota Prius has failed. This component is critical to the proper functioning of the braking system. It is currently still installed in the vehicle and available for inspection upon request. As a result of the failure, the abs warning light, traction control light, and brake warning light are all illuminated on the dashboard. The braking performance has noticeably declined — the pedal feels inconsistent and at times unresponsive. This has created a significant safety risk while driving, especially during sudden stops or in wet conditions, as it compromises the vehicle's ability to brake efficiently and predictably. The issue has been confirmed by a Toyota dealer (or independent mechanic if that’s the case — feel free to change this line accordingly). The dealer diagnosed the issue as a failure of the brake booster assembly, which aligns with known failures reported by many other 3rd-generation Prius owners. The vehicle has not been involved in an accident, and has not been inspected by the police or insurance representatives. Toyota previously issued a customer support program (csp zjb or zg1) covering this part, but it has since expired. I only recently began experiencing symptoms and was unaware of the csp until after contacting Toyota. Prior to the warning lights, I experienced intermittent symptoms such as a soft or delayed brake pedal, and an unusual sound from the brake system when the vehicle was turned off. The warning lights first appeared around [insert approximate mileage or date here], and have remained illuminated since then. Given the safety-critical nature of this component and the known defect history, I am requesting assistance from Toyota in the form of goodwill coverage or reimbursement, and would like this issue escalated for further review.

The accelerator wasn’t pushing down after I turned a corner then the lights in attached photo appeared. The power inverter needs to be replaced and since my car had the j0v software update in 2/2019, and the recall update came out in 3/2019, it was not linked to my VIN as it should’ve been. The update to j0v (attached) should have been posted w my VIN, correct? they are fixing it under customer support but refuse to tow it or give me rental bc they are saying it isn’t a recall issue, when the document below says it applies to all cars that needed j0v. I want to be sure all cars that had recall service before the march2019 update get this update linked to their VIN.

I was driving from las vegas to my home in los angeles. An alarming message began flashing on the dashboard telling me to pull over. The vehicle became hard to control. I somehow managed to get it off an exit. I was "lucky" enough to get it towed to a nearby Toyota dealership where I was told the inverter had failed and that that inverter and associated parts had to be replaced. On my 2015 Prius with only 50,000 miles on it. I specifically asked if there had been a recall on the electrical system of any 2015 Priuses, and they flatly said no. I also called Toyota, and they also said there were no recalls involving the electrical system or inverters. The barstow Toyota dealership said it would cost over $5,000 to repair and that they wouldn't have the parts they needed for a week. As it was, I had been stranded in the desert at a hotel for two days. I then had to pay $1,100 to be towed back to la and took it to a hybrid mechanic I trust and paid them to do the work. But this cost me thousands upon thousands. In a month where a friend of mine died (which was the reason I was driving from city to city). To have to replace this on a car with only 50,000 miles is preposterous. To now find out there actually is a recall on the 2015 Prius for the electrical system involving the inverter is so far beyond frustrating, I don't have the correct word for it.

Abs actuator and pump failure.

See all problems of the 2011 Toyota Prius 🔎.

Break pump , break pump assembly, break actuator. Vehicle has only 91k miles it. Breaks feel rough and slower to react. Too worried to use vehicle. Dealership said it’s a very well known issue and wanted $5800 to fix it.

The headlight bulbs keep going out. I have replaced the bulbs at least 2-3 times a year for the past few years. I have asked dealers about this and they tell me there is no recall or TSB. This is a hazard to night driving because of decreased illumination, especially in dark roads with not enough lighting. Please recall/fix this issue!!.

Breaking system failure do to asb actuator, breaks are locking and vehicle is engine braking.

See all problems of the 2009 Toyota Prius 🔎.

The contact owns a 2008 Toyota Prius. The contact stated that while driving at various speeds, the instrument panel failed to function as intended. The contact stated that the instrument panel went blank. The contact stated that the failure was intermittent at first but had become a permanent failure. In addition, the front headlights and rear taillights failed to function as intended. The vehicle was taken to the dealer; however, no cause for the failure was found. The vehicle was not repaired due to the cost. The contact stated that on a separate occasion, while driving at various speeds, the front headlights failed to work as intended. Upon inspection, the contact noticed that the bulbs had melted into the wiring harness. The contact stopped driving the vehicle at night. The manufacturer was not notified of the failure. The failure mileage was approximately 90,000.

Wednesday morning I went to start my car to go to work. I noticed the brake would not go down. It was difficult to press. I was unable to go to work safely. I brought my car to a mechanic where I was informed it was a faulty brake booster. When I researched online, I saw many many other Toyota owners went through the exact same issue. There is no recall but it’s a huge issue and a a safety problem.