Other Fuel System Problems of Toyota Prius - part 1

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.

Found coolant leak from heat exchanger into exhaust pipe. Looks like, t-sb-0135-19.

See all problems of the 2016 Toyota Prius 🔎.

I am having a hybrid propulsion system issue due to a part that was recalled according to this id number for the NHTSA 17v718000 that was posted Nov 14, 2017 and my car does seem to be affected because it is facing the same issues as other cars reported from that batch. I want to make sure that I can have it serviced properly at my dealership.

See all problems of the 2015 Toyota Prius 🔎.

During hot temperatures and after coming to a full stop, the car stalls/hesitates significantly (5-6seconds) when pushing the gas pedal. The car eventually proceeds but the issue reoccurs. It can only be intermittently reproduced and no codes are shown on the car dashboard. Mechanics are unable to identify the source of the issue so it cannot be resolved.

See all problems of the 2017 Toyota Prius 🔎.

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.

See all problems of the 2013 Toyota Prius 🔎.

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

See all problems of the 2014 Toyota Prius 🔎.

Exhaust heat-exchanger coolant pipe (part of the hybrid cooling loop) on my 2019 Toyota Prius is the system that failed. Safety risk: complete loss of coolant can cause sudden engine overheating and possible power reduction or shutdown while the vehicle is moving. I transport two young children daily; an unexpected stall on a highway or during an intersection turn would put all occupants and surrounding traffic at risk. Autonation Toyota mall of georgia (dealer) inspected the car on 22-may-2025, confirmed the leak, and advised the vehicle is unsafe to drive until the pipe is replaced. Repair estimate is $2,249 parts & labor to replace the front exhaust pipe that is on back order, no eta. Toyota corporate (brand engagement, case # 250522002498) is aware; they escalated the file to their parts department because the replacement pipe is back-ordered with no estimated arrival date. No other agencies or insurers have inspected the vehicle. Two days before the dealer visit, the warning symbol began flashing briefly at breaking then for longer intervals while driving. On the morning of 22-may-2025 the lamp was flashing more often and longer prompting the service appointment. Dealer found the coolant reservoir completely empty. No prior warning messages had appeared.

See all problems of the 2019 Toyota Prius 🔎.

The car stalls randomly and does not enter fail-safe mode. The dealer says it is the transmission but the transmission has never shuddered or hesitated. I am reading that these vehicles have intelligent power modules in the hybrid inverter that fail and can cause stalling. I feel like the dealership is working with Toyota to avoid addressing the actual problem. In the meantime I was sent home in a vehicle that continues to stall randomly and does not enter fail-safe mode.

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

See all problems of the 2010 Toyota Prius 🔎.

The head gasket failed on my vehicle, and began to burn coolant and overheat my engine. Upon description of the issue, a dealership mechanic was able to diagnose the issue. The sudden failure of my vehicle due to overheating while driving was extremely risky, and I had no indication that the issue was a head gasket until a dealership mechanic was able to look at my vehicle after being towed. I had taken my vehicle to a third-party mechanic, and they could not tell me why my vehicle was burning coolant, but provided a temporary stop-leak fix that did not hold. The first appearance of the check engine light was about 9 months ago, was assumed to be the spark plugs, which I had replaced, but then my coolant light started coming on with the check engine light for about a week before the engine overheat incident. The vehicle has been inspected by a Toyota hybird mechanic. No other inspections have been done. My safety and other's safety was put at-risk as my steering, speed control, and speed monitoring systems immediately shut off once the system detected an overheat, making it difficult to pull over safely and slowly to address the issue/call a tow truck. I required physical assistance from another motorist to move my vehicle off the road to allow others to pass.

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.

Driving on the freeway the car stalled and was unable to accelerate. The issue seems identical to the 2020 recall. 2020-06-23 recall no. 20v369000 Toyota motor engineering & manufacturing (Toyota) is recalling certain 2013-2015 Prius and 2014-2017 Prius v vehicles not included in recall 18v-684. Excessive voltage in the intelligent power module (ipm) within the inverter may cause the hybrid system to shut down, causing the vehicle to stall while being driven. I was told by the service center that my car is not on the recall list so they are unable to work it as a recall.

About 3 years ago we started getting the red triangle of death with 2 amber lights on display the vsc and the round circle with the exclamation point in the center. This could happen in 500 miles or it could happen tomorrow. When this happens I loose all exceleration and air conditioning and a orange car emblem with an exclamation point in it on the display screen. Once safely off road press power button off and back on and everything is back to normal except red triangle and car on display screen car is then drivable again. Using a code reader to check codes no codes appear but still have red triangle. Leaving car set for a period of time and restarting car and red triangle is extinguished. Have to drive in right lane on freeway in case it wants to quit. The most recent time was last week had driven it about 80 miles with a stop about halfway for 1 hour and stopped for a movie came back got in car started it and within 1000 feet got the red triangle, was in left turning lane with red light, shut off and restarted and was able to drive again as in all other times, took it to a neighbor who had a code reader(about 9pm) and no codes found, he reset it and red triangle extinguished. This type of happening is very unnerving to say the least, dont know when or where it will lay down with us. Don't know if anyone else has had similar issues with their Prius ours has 213,000+ miles on it. Original hybrid battery it was checked in 2015 and some cells replaced by a shop certified to replace cells in this battery. Thank you.

See all problems of the 2008 Toyota Prius 🔎.

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.

Dashboard pop up came up saying that the grille shutter is inoperable to visit a dealer. Went online and noticed there were recalls for my Prius year and because emissions is affected I contacted Toyota financial customer service who said to go to a dealer and that they would fix no charge. Went three times to the dealer and they did not want to honor the recall. Charged me $200 to run diagnostics on the vehicle and confirmed that the code that was being recalled matched. They made excuses and in the end did not fix. The pop up appeared March 2024 and since then I now have another pop up appear about the hybrid system overheating due to them not fixing. I went to a local mechanic who said it was the dealers responsibility since there are service bulletins but they do not want to help. The car has stalled out on the freeway almost leaving me to get hit and my fuel has gotten worse.

Dear NHTSA, I am seeking assistance and compensation for ongoing warranty and repair issues with my Toyota Prius. Key incident timeline: •March 21, 2024: dashboard message “grille shutter inoperable” •March 25, 2024: Toyota of glendale visit •charged $220 for diagnostics •refused to honor service bulletin •vehicle mileage: 149,217 customer service interactions: •April 9, 2024: •contacted Toyota customer service •confirmed CA emissions coverage to 150,000 miles •discovered extended warranty unexpectedly canceled brand engagement claim: •April 9, 2024: filed claim with Toyota’s brand engagement line •June 26, 2024: claim denied, dealership’s decision upheld repair challenges: •July 5, 2024: wondries Toyota diagnostic visit •charged $200 for diagnostics •confirmed active service bulletins would have covered repairs repair management: •northeast mechanic has handled all subsequent repairs due to Toyota’s failures financial losses breakdown: •initial diagnostic fee (Toyota of glendale): $220. 00 •diagnostic fee (wondries Toyota): $200. 00 •car rental (July 6, 2024 - hertz): $1,356. 17 •car parts: $1,706. 55 •labor on vehicle: $754. 22 •water pump: $167. 78 •head gasket, spark plugs, engine water pump: $2,161. 00 •total financial loss: $6,565. 72 I request a comprehensive investigation into these warranty and repair issues, seeking full compensation for the financial burden caused by Toyota’s repeated failures. Sincerely, [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The hybrid system was shut down while driving. The symptoms are like the description in this recall (NHTSA campaign number: 18v684000). However, my VIN is not on the recall list.

See all problems of the 2012 Toyota Prius 🔎.

The brake actuator keeps buzzing every 3 seconds or so the entire time the car is on and even after I turn the car off and get out. The brakes make a wierd burping noise and the pedal depresses with each noise if I am stopped at a red light or stop sign with my foot on the brakes. All of the brake, abs, and traction control lights lit up. The regenerative braking is no longer working.

The car began to jerk, made knocking noises, miss fires on cylinder 1, 2 and 4, coolant leakages, oil leakages, compression issues and the check engine light keeps turning on and off. My safety has been put into play because, the car would jerk many of times as it would want to stop as I was driving. I would then have to pull over and call for assistance. Per the Toyota service advisor he recommended that I needed a new rebuilt engine kit. The extended warranty company stated that I was negligent with my car and denied my claim and refused to pay for the 10 grand motor and I had to tow my car to another shop. However, the car at this time is still experiencing the same malfunctions. The warning lamps are still showing at this present time and prior to the failure of problem. This car meets the "lemon law guidelines, however, I have been informed otherwise that I don't meet the criteria for lemon law due it being expired sometime last year in oct of 2024. As stated this is a lemon car.

I was going on my way to work on the freeway at approximately 65 miles per hour, suddenly I felt as if my car shut off will driving and I lost power. I pressed on the gas pedal as I was pulled into the emergency lane to the right of the freeway, the gas pedal did not work. I pulled to the side and I shut the car off. I waited about 20 minutes and I turned the car back on.

Hybrid system shut down. Dc power converter shutting down. Car shut down on me in middle of road almost caused a crash. There was a recall in 2018 but I never received a notice and now as of 2023 there are no active recalls.

See all problems of the 2011 Toyota Prius 🔎.

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

On may 16, 2023 I was slowly driving out of a market parking lot when the car suddenly accelerated, full throttle, and speeded across the street (colusa avenue, berkeley, CA), crashing head on into a fence. Immediately after the crash, the dashboard displayed the following: "check engine (!) a malfunction in the electronic control of the engine, throttle, or automatic transmission has been detected. Contact your Toyota dealer to have your vehicle inspected. " the car was towed and is now at a body shop selected by my insurance company, aaa. I received whiplash, small bruises on my chest and left hand, and a scraped shin. I was taken to alta bates emergency by ambulance.

See all problems of the 2020 Toyota Prius 🔎.

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.

While filling my Prius with gas, as soon as I started pumping, it spewed gas all over my arms and shirt, as the gas would not go down the pipe into the gas tank. My mechanic explained that gasline exhaust valve was stuck causing the gas to spirt back out the intake opening. This part had to be replaced. Firestone replaced it for a total of $337. 08, however, the dealer would have charged more. It was not covered as a defect issue. The experienced mechanic said that he had seen this problem on several Toyotas. This is hazardous and Toyota should repair those that exhibit this problem; also they should change their design so that the exhaust valve does not fail causing gasoline to spill on the person pumping gas and all down the side of the car onto the cement pavement.

When filling gas, a near-empty Prius overflowed almost immediately, splashing fuel over the car, the ground, tires, and my feet! gas is flammable and not good to get on one's skin. Firestone experienced/certified repairman said that he's repaired many Toyotas with the same problem. No advanced warning was presented. Last time I filled it before this incident it worked fine. Technician said that the air-exhaust that permits air to escape while gas is being delivered to the tank had failed to work properly, causing the fuel to spew back up the gas line and on to the car/ground. He had to order a part from Toyota and replace it. This cost me $337 for part and labor. I believe this is a malfunction that Toyota should cover. This part should not fail as it could start a fire and contaminate the car, ground and put petroleum on people.

My Prius v has slow acceleration and the rpms seem to go unusually high on acceleration. This makes it dangerous to pull out from a stop sign, etc. In certain situations that would be fine in another car of the same make and model. And recently it has started to throttle up when taking my foot off the gas and even when pressing on the brake. This happens intermittently and randomly. Fortunately no accidents have occurred yet and I'm trying to get the problems resolved with Toyota, but the dealer says it will be hard for them to diagnose when the problem is not occurring and there are no warning lights. Less than 60,000 miles on it.

Hybrid battery overheats after an hour of driving at high speeds. Car battery shuts down and becomes immobile.

Fuel pump malfunctioned. The vehicle stalled at low speeds while driving on an incline and gave a large red exclamation error sign on the dashboard. It stopped accelerating and came to a stop. Afterwards the engine will not start anymore. The car was towed to a garage and they found the fuel pump to be faulty.

See all problems of the 2005 Toyota Prius 🔎.

I was driving my 2012 Prius on the highway at around 55 mph. The hybrid system warning came on and the car lost all power and immediately began to coast. I was fortunate not to have been in or caused an accident but cars behind me had to swerve to avoid hitting me. I was able to coast to a middle median lane. After waiting 15-20 minutes, the car never regained power. We were finally able to push it off the road and into a parking lot. It never regained power.

Stopped at red light, then the car didn't accelerate when hitting gas. Engine revs but the car does not accelerate. It happened multiple time when the car was out in sun with full ac on(100f). Happened once in intersection and almost got hit head on.

See all problems of the 2018 Toyota Prius 🔎.

Unknown my car started stalling when it comes to a full stop. I. E. If I stop at a red light or stop sign, and I then press the gas, it stalls. It might inch forward, but it doesn’t really accelerate. This happened last year, and I took it to the dealer. They couldn’t reproduce the results, and they could only suggest changing my small 12v battery. Today, it stalled 8 times, between 2 short drives. Each at a stop sign only travelling ~5 miles total. I have an appointment at the dealer but this is exactly what happened last year with no diagnosis. No check engine light is on or anything.

Our 2009 Toyota Prius is known as a gen 2 Prius (model years 2004 -2009). All gen 2 Priuses has a bladder inside their fuel tank. Over time, these bladders are known to deteriorate. In our case, the fuel tank capacity is shrinking and fuel can be difficult to add to the tank (pumps click off repeatedly and occasionally, fuel splashes back out of the tank). Additionally, the fuel gauge reports unreliable statuses and drops or adds multiple "bars" at a time yet fuel, when added, and tank status as reported by the gauge, are inconsistent with one another. Thus, we, the drivers, don't know how much fuel is in the tank and may consider carrying a full gas can to avoid being stranded along the roadside. We believe Toyota knew about this gen 2 defect at the time we purchased our 2009 Prius, which was in March, 2009. In fact, the new gen 3 Priuses, starting with the 2010 model year, had already had their fuel systems redesigned and factories were probably being retooled when we purchased our vehicle. Thus, they knowing sold us a vehicle with a known product defect. Now, with the bladder deteriorating, the local Toyota dealership wants to replace our fuel tank/system at a cost of almost $2,000. The replacement tank will be of an identical design as the one they sold me in 2009. So they want me to pay an additional two grand for a tank that has been known to be defective for the past 13 years. This is unbelievable!.

See all problems of the 2009 Toyota Prius 🔎.

My wife's 2014 Prius v failed to run. After towing to service diagnosed as failed inverter. Service records indicate this was serviced as a recall 2/2019. Now Toyota refuses to recognize problem as a warranty issue for repair. Even though recall notice indicates repair or replacement should be free of charge. Breakdown occurred 5/14/2022. Incident started as she was getting on highway. Drove home at 25mph.