FaultScore

FaultScore report

2012 Toyota Prius V problems

Owners have filed 289 complaints about the 2012 Toyota Prius V with NHTSA between 2013 and 2026. The largest single group is the brakes. Across this model's run it ranks 1 of 6 worst.

F

FaultScore 90/100

Higher is worse. Measured against the other years of the Toyota Prius V.

How this is worked out

The numbers

289

Complaints

32

Crashes reported

2

Fires reported

15

Injuries reported

6 complaints report a death.

69,347 mi

Median mileage at failure

Half of reported failures happened before this

30%

Failed under 36,000 miles

Inside a typical bumper-to-bumper warranty

What kind of bad

The letter says how bad. This says what kind — whether this year drew an unusual number of complaints, unusually dangerous ones, or failures that arrived unusually early.

Complaint volume 100 vs 50 Severity 98 vs 50 Early failure 51 vs 50
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 100
Against the median year of the Toyota Prius V. 50 means typical for this model; 100 means roughly double.
Severity — 98
19% of these complaints involved a crash, fire, injury or death, against a national rate of 9.7%.
Early failure — 51
30% of failures with a mileage on record happened under 36,000 miles, against a national rate of 29%.

How 2012 compares with every other Toyota Prius V

Click any bar to open that year's report.

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks on a 2012 Toyota Prius V

Every complaint is filed against a part. Follow any row for the complaints about that part alone.

Brakes 131 45.3%

10 crashes, 0 fires · median 79,500 mi

Engine & Cooling 37 12.8%

1 crashes, 1 fires · median 120,000 mi

0 crashes, 1 fires · median 76,217 mi

2 crashes, 0 fires · median 68,000 mi

5 crashes, 0 fires · median 16,004 mi

Steering 11 3.8%

2 crashes, 0 fires · median 66,027 mi

Driver Assist & Collision Avoidance 9 3.1%

1 crashes, 0 fires · median 173,943 mi

Fuel & Propulsion 8 2.8%

Median failure at 155,500 miles

Airbags 8 2.8%

4 crashes, 0 fires · median 24,726 mi

Stability & Traction Control 7 2.4%

Median failure at 98,610 miles

Transmission & Drivetrain 7 2.4%

1 crashes, 0 fires · median 8,500 mi

Lights 4 1.4%

Median failure at 81,000 miles

Body & Structure 4 1.4%

2 crashes, 0 fires · median 13,252 mi

Windows, Mirrors & Wipers 3 1.0%

Median failure at 200 miles

Seats 2 0.7%

1 crashes, 0 fires · median 31,000 mi

Wheels 2 0.7%

2 crashes, 0 fires · median 124,126 mi

Seat Belts 1 0.3%

1 crashes, 0 fires

Suspension 1 0.3%

Median failure at 3,300 miles

When it fails

Odometer readings owners gave when they filed. About half of all complaints include one.

Under 1,000 miles 8 4.5%
1,000 – 9,999 miles 22 12.4%
10,000 – 24,999 miles 17 9.6%
25,000 – 49,999 miles 15 8.5%
50,000 – 74,999 miles 28 15.8%
75,000 – 99,999 miles 13 7.3%
100,000 – 149,999 miles 42 23.7%
150,000+ miles 32 18.1%

NHTSA crash tests

The agency crash-tested this model year itself. These are its own photographs and star ratings.

Configuration Overall Front Side Rollover
2012 Toyota Prius V SW FWD

When owners complained

A spike years after the car went on sale usually means a part wearing out on schedule across the whole fleet — the kind of pattern no single owner can see from inside their own car.

Feb 2013 peak 9 Jun 2026

NHTSA investigations into the 2012 Toyota Prius V

An investigation is the step before a recall: the agency has seen enough complaints to look into a pattern itself. An open one means it thinks something may be wrong and nothing has been fixed yet.

1 investigation is still open.

DP23005 Opened 22 Nov 2023 Still open SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS

Brake Actuator Valve Wear

The Office of Defects Investigation (ODI) has received a petition dated September 19, 2023 from the owner of a 2012 Toyota Prius V requesting that ODI reevaluate its decision to deny DP19-004. In the letter, the petitioner reported experiencing an unexpected and complete loss of brake power while driving, accompanied by multiple dashboard warning lights. This petition is based on the petitioner's direct experience and assessment that ODI closed DP19-004 because its prompting petition was withdrawn by that petitioner. ODI will review the work conducted during DP19-004 and a review of any additi...

Recalls on the 2012 Toyota Prius V

A complaint is one owner's allegation. A recall is the point at which the manufacturer or a regulator agreed the defect is real and dangerous enough to fix for free — however old the car is.

United States — NHTSA

18V684000

HYBRID PROPULSION SYSTEM

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2010-2014 Toyota Prius and 2012-2014 Toyota Prius V vehicles. 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.

Risk: If the hybrid system shuts down unexpectedly, it can increase the risk of a crash.

15V449000

HYBRID PROPULSION SYSTEM: INVERTER

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2012-2014 Prius V vehicles manufactured August 22, 2011, to June 30, 2014. A component within the hybrid inverter assembly may overheat, causing the hybrid system to reduce output power allowing the vehicle to only drive a short distance. In some circumstances, the hybrid system may shut down causing the vehicle to stop while being driven.

Risk: The vehicle may enter a fail-safe/limp-home mode that limits the drivability of the vehicle. The hybrid system could also shut down completely resulting in a vehicle stall, increasing the risk of a crash.

13E070000

EXTERIOR LIGHTING:TAIL LIGHTS

Genera Corporation (Genera) is recalling certain aftermarket replacement tail lights, model 11-6468-00 (driver-side), and model 11-6467-00 (passenger-side), sold for use on 2012-2013 Toyota Prius V vehicles. The brake light and tail light circuits are switched causing the brake lights to be illuminated continuously until the brake pedal is pressed, when the brake lights will go out.

Risk: The reversed tail lamp function reduces the ability to warn other motorists of the driver's intentions, increasing the risk of a crash.

13V014000

AIR BAGS:FRONTAL:SENSOR/CONTROL MODULE-INACTIVE

Southeast Toyota Distributors, LLC (SET) is recalling certain models interspersed through model years 2009 through 2013 as follows: model year 2009-2012 Tacoma, 4Runner, Camry, Camry Hybrid, Prius, and RAV4; model year 2009-2010 Avalon, FJ Cruiser, and Highlander Hybrid; model year 2010-2013 model year Corolla, Sienna and Tundra; model year 2009-2013 Highlander and Venza; model year 2012 Prius V; and model year 2010-2012 Sequoia. During modification by SET to include accessories such as leather seat covers, seat heaters or headrest DVD systems, these vehicles may not have had the passenger seat occupant sensing system calibration tested. Without passing the calibration test, the occupant sensing system may not operate as designed.

Risk: If the front passenger seat occupant sensing system is out of calibration, the front passenger airbags may not deploy or they may deploy inappropriately for the passenger's size and position. This could increase the risk of personal injury during the event of a vehicle crash necessitating airbag deployment.

Canada — Transport Canada

Canada runs its own recall programme, and its campaigns do not always mirror the American ones.

Recall 2021723 55,683 units in Canada

Electrical

Issue: This recall is for certain block heater kits installed on certain vehicles or sold as accessories at Toyota or Lexus dealerships. On certain vehicles, the engine block heater cable may not have enough heat protection and could be damaged by high temperatures. If this happens, the cable could short circuit while plugged in, and cause the wiring to overheat or melt. Note: This recall only affects the following block heater/cord part numbers: C014003034 PK5A408J09 PU14000904 C014003151 PK5A408J13 PU14000905 C014000885 PK5A489J11 PU14000907 C014000888 PK5A489J22 PU14000909 C014000907 PK5A410H00 PU14000911 C014100904 PU14000900 PU14000913 C014100907 PU14000901 PU14003571 C014100911 PU14000902 PK5A489J14 PK5A408J05 PU14000903 Safety Risk: Engine block heater wiring that overheats or melts could create the risk of a fire. Corrective Actions: Toyota recommends that you should stop using the engine block heater immediately. Toyota will notify owners by mail and instruct you to take your vehicle to a dealer to disable the engine block heater. For some vehicles, the corrective actions for this recall are under development. For others, a new engine block heater cannot be installed, and the owner will receive a refund of the purchase price of the engine block heater.

Recall 2018546 23,125 units in Canada

Powertrain

On certain vehicles, the Intelligent Power Module (IPM), which is part of the hybrid drive system, could become damaged under certain driving conditions. This could cause various warning lights to illuminate on the instrument panel of the vehicle and cause a reduction or loss of motive power, increasing the risk of a crash causing injury and/or property damage. Correction: Dealers will update motor/generator and hybrid control ECU software and affect repairs as necessary. Note: This recall supersedes recalls 2014-042 and 2015-312. Vehicles repaired under the previous recall(s) will require repair.

Recall 2015312 9,515 units in Canada

Powertrain

On certain vehicles, the Intelligent Power Module (IPM), which is part of the hybrid system inverter assembly, could become damaged under certain driving conditions. This could cause various warning lights to illuminate in the instrument panel of the vehicle and cause a reduction or loss of motive power, increasing the risk of a crash causing injury and/or property damage. Correction: Dealers will update motor/generator and hybrid control ECU software and affect repairs as necessary. Note: This recall is superseded by recall 2018546. Please see <a href="http://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/detail.aspx?lang=eng&&rn=2018546">recall 2018546</a> for more information.

Recalls cover specific build ranges, so check your own vehicle by VIN at nhtsa.gov/recalls or, in Canada, Transport Canada.

Complaints that involved harm

Reports where the owner recorded a crash, a fire, an injury or a death.

Johnson City, TN Fire

ENGINE

Driving down the highway, the engine suddenly threw a rod, causing a terrible jolt, after which the engine burst into flames. There had been no warning lights.

NHTSA complaint #11747076 — an unverified report by a vehicle owner.

Los Angeles, CA Crash 1 injured

VEHICLE SPEED CONTROL

On February 27 2024 I had spend 2300 dollars on car repairs see enclosed then on April 11 2024 while backing out of my driveway, I experienced a sudden acceleration of my vehicle which led to body damage to my car yet Toyota after inspection says that now the car system works perfectly. Prior to this incident I experienced warning light and windshield wiper malfunction .

NHTSA complaint #11586049 — an unverified report by a vehicle owner.

Los Angeles, CA Crash 1 injured

STRUCTURE:BODY

On February 27 2024 I had spend 2300 dollars on car repairs see enclosed then on April 11 2024 while backing out of my driveway, I experienced a sudden acceleration of my vehicle which led to body damage to my car yet Toyota after inspection says that now the car system works perfectly. Prior to this incident I experienced warning light and windshield wiper malfunction .

NHTSA complaint #11586049 — an unverified report by a vehicle owner.

Clearwater, FL Crash 2 injured 1 killed

STEERING

8/2/22 My ABS light came on. Took the car to a dealer. They kept it for six weeks and returned it on 10/3/22. No charge and no explanation. 11/7/22 engine light came on. Took in to dealer, they returned it 11/17/22 indicated incorrect air/ fuel mixture. 10/9/23 Traveling 47 mph, came around a mountain and encountered stopped cars. Slammed on the brakes, car did not slow down, steering wheel locked to the right, car yawed to the right, and turned over, hit a curb and the car righted itself. 3 occupants, 2 injuries , 1 death. Researching the 2012 Toyota Prius, found many instances of a faulty ABS system, mimicking exactly my experience. I was never informed by Toyota or the local Toyota dealer.

NHTSA complaint #11569297 — an unverified report by a vehicle owner.

Clearwater, FL Crash 2 injured 1 killed

SERVICE BRAKES

8/2/22 My ABS light came on. Took the car to a dealer. They kept it for six weeks and returned it on 10/3/22. No charge and no explanation. 11/7/22 engine light came on. Took in to dealer, they returned it 11/17/22 indicated incorrect air/ fuel mixture. 10/9/23 Traveling 47 mph, came around a mountain and encountered stopped cars. Slammed on the brakes, car did not slow down, steering wheel locked to the right, car yawed to the right, and turned over, hit a curb and the car righted itself. 3 occupants, 2 injuries , 1 death. Researching the 2012 Toyota Prius, found many instances of a faulty ABS system, mimicking exactly my experience. I was never informed by Toyota or the local Toyota dealer.

NHTSA complaint #11569297 — an unverified report by a vehicle owner.

Clearwater, FL Crash 2 injured 1 killed

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

8/2/22 My ABS light came on. Took the car to a dealer. They kept it for six weeks and returned it on 10/3/22. No charge and no explanation. 11/7/22 engine light came on. Took in to dealer, they returned it 11/17/22 indicated incorrect air/ fuel mixture. 10/9/23 Traveling 47 mph, came around a mountain and encountered stopped cars. Slammed on the brakes, car did not slow down, steering wheel locked to the right, car yawed to the right, and turned over, hit a curb and the car righted itself. 3 occupants, 2 injuries , 1 death. Researching the 2012 Toyota Prius, found many instances of a faulty ABS system, mimicking exactly my experience. I was never informed by Toyota or the local Toyota dealer.

NHTSA complaint #11569297 — an unverified report by a vehicle owner.

The most recent complaints

In the owners' own words, exactly as filed with NHTSA.

Forest Hills, NY

SERVICE BRAKES

Brake actuator assembly failure on a vehicle with 99,818 miles. Whirring sound when braking followed by lighting of several brake alert lights on dash including PCS and ABS and others. The whirring noise has occured for several weeks, but the light indicators happened on 6/28/26. Toyota has an acknowledged Customer Support Program (20TE07) for this exact failure on this exact and Toyota declined to cover the repair. This vehicle is 14 years old but has well under 150k miles and Toyota will not honor claim though they clearly are aware of the safety hazard.

NHTSA complaint #11747171 — an unverified report by a vehicle owner.

Johnson City, TN Fire

ENGINE

Driving down the highway, the engine suddenly threw a rod, causing a terrible jolt, after which the engine burst into flames. There had been no warning lights.

NHTSA complaint #11747076 — an unverified report by a vehicle owner.

Aiken, SC

SERVICE BRAKES

The ABS system has failed. All brake related warning lights have appeared on the dash board and the ABS no longer works. The car will brake for now, but the pedal is mushy. The issue was diagnosed by a dealer. The diagnosis from the dealer, based on diagnostic trouble codes they did not provide, is that brake fluid is leaking in the master cylinder and brake booster. The recommendation is to have both the master cylinder and booster replaced. This vehicle has 143,000 miles on it. No accidents have occurred as a result of the brakes yet but how long before the brakes ultimately fail is unknown.

NHTSA complaint #11745426 — an unverified report by a vehicle owner.

Murfreesboro, TN

SERVICE BRAKES

ABS, brake, and traction control lights, all illuminated at once on the dashboard. Inspection found DTC C1391 indicating the accumulator is leaking or failing to hold pressure correctly. We are advised that the braking system performance will decline, eventually failing. An very expensive repair is required and Toyota apparently has a shortage of the parts required. We cannot drive the vehicle given the potential of braking failure and cannot get it repaired in a timely manner for lack of Toyota parts.

NHTSA complaint #11743546 — an unverified report by a vehicle owner.

at 140,000 miles Castaic, CA

SERVICE BRAKES, HYDRAULIC

The contact owns a 2012 Toyota Prius V. The contact stated that while driving at an undisclosed speed, the brake master cylinder was constantly cycling. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic to be diagnosed or repaired. Most recently, while the vehicle was turned off, the brake master cylinder was cycling. The contact stated that while the keys were in his hands and standing several feet away from the vehicle, the brakes started cycling. The manufacturer was notified of the failure but offered no assistance. The approximate failure mileage was 140,000.

NHTSA complaint #11715101 — an unverified report by a vehicle owner.

Greenfield, MA

SERVICE BRAKES

The power assist braking system failed while I was driving in the rain. I was approaching a stoplight and I had to push down a lot harder and farther than I typically have to in order to stop. Luckily I was not going that fast and there were no cars ahead of me, but I stopped beyond where I had intended at a busy intersection. No warning lamps or messages had been illuminated prior to this happening. After the failure, the Brake system, ABS, and SLIP indicator lights were on and remained on when the car was restarted. An independent service center used a scan tool and found code C1391 stored in memory, indicating that the brake booster is unable to hold pressure due to an internal leak. The vehicle has not yet been inspected by the manufacturer, police or insurance, but can be available upon request.

NHTSA complaint #11704509 — an unverified report by a vehicle owner.

Albertville, AL

SERVICE BRAKES

I bought this car over a week ago for a good price, performed fine until I’m driving it home on the interstate and some abs/brake lights came on the dash. I enter my city and notice the brakes aren’t performing as tight as they were during the test drive. A few days later I take it to a local dealership to get it looked at. The brake actuator and pump had gone bad, causing this issue. It cost almost $5,000 to fix there, I couldn’t afford it so I had to only pay the $185 for the diagnostic. It’s an on and off thing, sometimes the lights go away and it brakes as it should, but most of the time the lights are on and the brakes don’t work as they should. I fear one day the brakes may eventually give out on me and cause an accident. I am available for inspection.

NHTSA complaint #11703955 — an unverified report by a vehicle owner.

Fallbrook, CA

SERVICE BRAKES

After 13 years and 112,000 the brake booster and brake booster pump went out on my car. Toyota extended the warranty to 10 years because of this issue. Now just outside of the 10 yr mark my car has this issue and Toyota will not cover it. This is a huge expense and also a major issue with this year and model of car.

NHTSA complaint #11692218 — an unverified report by a vehicle owner.

West Sacramento, CA

SERVICE BRAKES

I have a Prius v 2012, and the lights for abs turned on and when I checked on internet Toyota was repairing the part for 150k miles and 10 years but this is a safety feature my car is now at 149922, And while I was on road suddenly the signs came up and I the brakes were hard, and this is a problem for my safety and for others too since It doesn’t brake well

NHTSA complaint #11686967 — an unverified report by a vehicle owner.

Stafford, VA

SERVICE BRAKES

While driving on the interstate I went to slow down to merge and my brakes failed. The following warning lights came on: Master Warning Light (yellow), Brake System Warning Light, Brake System warning light (red), ABS Warning Light, and the Slip Indicator light. My vehicle was towed to a Toyota Dealership and after running a diagnostic test, they confirmed that it was the "Break booster with accumulator c1391 stored internal leak of accumulator and need immediate attention" which they quoted at $4,295.68 to fix. After researching the issue saw A Customer Support Program 20TE07 was issued taking responsibility for the faulty Brake Booster Pump Assembly however only covered the repair for a two-year period and only if it was one of the identified diagnostic trouble codes listed in the CSP issued by Toyota but expired in Feb 2022. The code pulled from my vehicle 3 days ago was listed in this document, but the coverage only covers until Feb 2022. This is not a normal wear and tear issue, it is a faulty part that Toyota identified as a life and death safety concern but refuses to do anything about because mine didn't show an issue within their 2-year CSP timeframe. Toyota identified that there are roughly 118,950 2012-2014 model year prius V with a production period of late September 2010 to mid-November 2014 vehicles that this faulty part affects along with everyone else on the road with these vehicles as it causes failure of the brake booster pump assembly, which leads to a loss of braking assist and the deactivation of the Vehicle Stability Control system. For the safety and lives of the owners of these vehicles and all of the other lives of the drivers on the road that this could affect in the case of this faulty part should there be a catastrophic accident, like mine could have been, a nationwide recall on this part MUST be issued.

NHTSA complaint #11668719 — an unverified report by a vehicle owner.

Pensacola, FL

SERVICE BRAKES, HYDRAULIC

The contact owns a 2012 Toyota Prius V. The contact stated that while driving at an undisclosed speed, the service brakes warning light illuminated. The vehicle was taken to the dealer, who diagnosed failures with the brake booster assembly and brake booster pump assembly. The vehicle was not repaired. After investigating the failure, the contact related the failure to Customer Satisfaction Program: 21TE01. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was unknown.

NHTSA complaint #11660422 — an unverified report by a vehicle owner.

Perris, CA

AIR BAGS

On 10-17-24 these warning lights came on: 1. Pre-collision System 2. Hybrid System 3. Airbag 4. Safety Connect red light And Intermittently: 1. Slip Indicator 2. Brake System Cruise control would not set, and displayed "E3". ------- Component failed: Dealer determined that the driver's side door harness had been chewed by a rat that had entered the under dash area "somehow". They said it couldn't be repaired but must be replaced. My insurance deductible was $500 and they paid the balance of the $1,387.06 bill. (I have retained the harness, which could have been repaired by splicing the two wires connecting to the driver's side airbag collision sensor. The labor to splice the wires would have been less than an hour.) ------ Safety: The chewed wire apparently disabled the Airbag, Pre Collision, Emergency Automatic Braking, Seatbelt Pre-Tensioning, ABS, and Stability Systems. ----- The dealer confirmed the problem. ----- My insurance adjuster did inspect the harness. ----- I placed electronic rat traps in the vehicle, which killed three rats. ========= NEXT ========= ALL THE SAME WARNING LIGHTS CAME ON A FEW MONTHS LATER! I didn't throw more money at the Dealer, and took off the panels to inspect the wiring myself. There was damage to the passenger side door harness wires. I removed the harness and ordered a $60 used replacement on Ebay. While waiting for delivery, I researched rat damage to Toyota wires, and how rats could possibly enter the interior of the car. I discovered that there is an UNSCREENED 12x9 inch opening to bring fresh air into the HVAC system. It is hidden under the windshield wiper cowls. Also, there are two UNSCREENED vents in the trunk area. Other Prius owners covered those openings with 1/4 inch metal wire hardware cloth. I spent a few hours disassembling, covering, and reassembling pieces to prevent further access through the fresh air intake, and will do to the rear next. TOYOTA should recall these cars and ratproof the harnesses

NHTSA complaint #11660257 — an unverified report by a vehicle owner.

Perris, CA

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL

On 10-17-24 these warning lights came on: 1. Pre-collision System 2. Hybrid System 3. Airbag 4. Safety Connect red light And Intermittently: 1. Slip Indicator 2. Brake System Cruise control would not set, and displayed "E3". ------- Component failed: Dealer determined that the driver's side door harness had been chewed by a rat that had entered the under dash area "somehow". They said it couldn't be repaired but must be replaced. My insurance deductible was $500 and they paid the balance of the $1,387.06 bill. (I have retained the harness, which could have been repaired by splicing the two wires connecting to the driver's side airbag collision sensor. The labor to splice the wires would have been less than an hour.) ------ Safety: The chewed wire apparently disabled the Airbag, Pre Collision, Emergency Automatic Braking, Seatbelt Pre-Tensioning, ABS, and Stability Systems. ----- The dealer confirmed the problem. ----- My insurance adjuster did inspect the harness. ----- I placed electronic rat traps in the vehicle, which killed three rats. ========= NEXT ========= ALL THE SAME WARNING LIGHTS CAME ON A FEW MONTHS LATER! I didn't throw more money at the Dealer, and took off the panels to inspect the wiring myself. There was damage to the passenger side door harness wires. I removed the harness and ordered a $60 used replacement on Ebay. While waiting for delivery, I researched rat damage to Toyota wires, and how rats could possibly enter the interior of the car. I discovered that there is an UNSCREENED 12x9 inch opening to bring fresh air into the HVAC system. It is hidden under the windshield wiper cowls. Also, there are two UNSCREENED vents in the trunk area. Other Prius owners covered those openings with 1/4 inch metal wire hardware cloth. I spent a few hours disassembling, covering, and reassembling pieces to prevent further access through the fresh air intake, and will do to the rear next. TOYOTA should recall these cars and ratproof the harnesses

NHTSA complaint #11660257 — an unverified report by a vehicle owner.

Perris, CA

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

On 10-17-24 these warning lights came on: 1. Pre-collision System 2. Hybrid System 3. Airbag 4. Safety Connect red light And Intermittently: 1. Slip Indicator 2. Brake System Cruise control would not set, and displayed "E3". ------- Component failed: Dealer determined that the driver's side door harness had been chewed by a rat that had entered the under dash area "somehow". They said it couldn't be repaired but must be replaced. My insurance deductible was $500 and they paid the balance of the $1,387.06 bill. (I have retained the harness, which could have been repaired by splicing the two wires connecting to the driver's side airbag collision sensor. The labor to splice the wires would have been less than an hour.) ------ Safety: The chewed wire apparently disabled the Airbag, Pre Collision, Emergency Automatic Braking, Seatbelt Pre-Tensioning, ABS, and Stability Systems. ----- The dealer confirmed the problem. ----- My insurance adjuster did inspect the harness. ----- I placed electronic rat traps in the vehicle, which killed three rats. ========= NEXT ========= ALL THE SAME WARNING LIGHTS CAME ON A FEW MONTHS LATER! I didn't throw more money at the Dealer, and took off the panels to inspect the wiring myself. There was damage to the passenger side door harness wires. I removed the harness and ordered a $60 used replacement on Ebay. While waiting for delivery, I researched rat damage to Toyota wires, and how rats could possibly enter the interior of the car. I discovered that there is an UNSCREENED 12x9 inch opening to bring fresh air into the HVAC system. It is hidden under the windshield wiper cowls. Also, there are two UNSCREENED vents in the trunk area. Other Prius owners covered those openings with 1/4 inch metal wire hardware cloth. I spent a few hours disassembling, covering, and reassembling pieces to prevent further access through the fresh air intake, and will do to the rear next. TOYOTA should recall these cars and ratproof the harnesses

NHTSA complaint #11660257 — an unverified report by a vehicle owner.

Rockledge, FL

SERVICE BRAKES

My wife was driving home and four dashboard error lights illuminated (Brakes, ABS, SLIP and a yellow light_) The brakes suddenly "went soft" (in her words), and it freaked her out. I now learn that I need to have the brake master cylinder and a booster pump assembly replaced at a cost of over $4,000. Ouch!

NHTSA complaint #11643279 — an unverified report by a vehicle owner.

Lakewood Village, TX

SERVICE BRAKES

While driving suddenly the ABS and vehicle traction lights came on and the car became very slippery, was unable to stop without an excessive amount of space between the car in front of me and me. While looking at the car, I realized the actuator brake booster pump. I then found multiple websites and forums dedicated to people with the same problem ( brakes suddenly not functioning correctly while driving) with the same model car as I have, and there was a service bulletin that shows Toyota acknowledged there was a problem ( and a fix) but with the date of the bulletin and the date it was to be fixed within, it was near impossible to actually have it fixed. My car has 87,000 miles and the brake system is dangerous

NHTSA complaint #11639525 — an unverified report by a vehicle owner.

San Diego, CA

SERVICE BRAKES

Brake booster pump assembly. Toyota has sent a notice of extended warranty for this vehicle which has expired. Without repair, the brakes will loose compression and stop working.

NHTSA complaint #11637372 — an unverified report by a vehicle owner.

Prescott, AZ

SERVICE BRAKES

Anti lock brake malfunction. Code c1391 leak in brake accumulator. This seems to be a common code for brake issues with Prius. The cost to repair is significant, more than the value of the car. This is a certain safety issue that needs to be addressed. This is clearly a Hazzard and will cost lives to those who cannot afford the cost of repair.

NHTSA complaint #11636405 — an unverified report by a vehicle owner.

San Jose, CA

SERVICE BRAKES

The issue is my brakes failed on me all of a sudden. My abs light, traction control light, and brake light came on out of nowhere. Suddenly didn't have brake pressure. Had to pump the brakes a few times before the car would stop. Luckily I didn't hit anything or anyone. I brought the car to Prius specialist and they diagnosed it saying it was the ABS Actuator Pump Assembly and Master Cylinder. They said it is quite common in the 3rd generation of Prius'. I contacted Toyota North America and they said they had a recall on the parts but it ended Dec 31st, 2021. I bought the car in 2022 unknowingly. Was quoted around $4000 to repair it parts and labor. This is a safety issue that should not be limited to time. Luckily I was not on a Freeway or anywhere where I could have done damage. This issue is a hazard to myself and other people on the road. Toyota needs to resolve this.

NHTSA complaint #11636624 — an unverified report by a vehicle owner.

Prescott, AZ

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

Anti lock brake malfunction. Code c1391 leak in brake accumulator. This seems to be a common code for brake issues with Prius. The cost to repair is significant, more than the value of the car. This is a certain safety issue that needs to be addressed. This is clearly a Hazzard and will cost lives to those who cannot afford the cost of repair.

NHTSA complaint #11636405 — an unverified report by a vehicle owner.

Greenwood, IN

SERVICE BRAKES

I write to add my voice to the litany of complaints in support of NHTSA investigation DP23005. While on an road trip recently the ABS, Traction Control, and Brake warning lights all came on. The brake felt squishy and didn't seem to be functioning as confidently as before. I altered my driving (giving plenty of distance, lowering my speed) so that in the event the brakes quit working I would have an exit strategy. I took it to my Independent Service Center as soon as possible who found the code C1391 and diagnosed the need to replace the master cylinder / booster assembly for several thousand dollars. Of course I must do this in order to remain safe but this is clearly a safety issue that could have been catastrophic. Meanwhile I am out of a car for several weeks until the part arrives and out of at least $2000 as quoted by my mechanic ($1640 for the part). The car only has 146,500 miles on it so otherwise would have plenty of life left in it. I'm filing this complaint to add my voice to the open petition and toward the NHTSA's investigation in strong support of holding Toyota responsible for PREVENTING injury and death through a proper recall, as well as against burdening the car owner with the costs of making up for Toyota's negligence on this issue. At the least they need to cover the cost of these necessary safety repairs when they are warned by the lights and reinstate their warranty extension for this issue

NHTSA complaint #11621521 — an unverified report by a vehicle owner.

Harrisonburg, VA

SERVICE BRAKES

I write to add my voice to the litany of complaints in support of NHTSA investigation DP23005. While on an interstate road trip recently the ABS, Traction Control, and Brake warning lights all came on. The brake felt squishy and didn't seem to be functioning as confidently as before. I altered my driving (giving plenty of distance, lowering my speed) so that in the event the brakes quit working I would have an exit strategy. I took it to my Independent Service Center as soon as possible who found the code C1391 and diagnosed the need to replace the master cylinder / booster assembly for several thousand dollars. Of course I must do this in order to remain safe but this is clearly a safety issue that could have been catastrophic. Meanwhile I am out of a car for several weeks until the part arrives and out of at least $2000 as quoted by my mechanic ($1640 for the part). The car only has 146,500 miles on it so otherwise would have plenty of life left in it. I'm filing this complaint to add my voice to the open petition and toward the NHTSA's investigation in strong support of holding Toyota responsible for PREVENTING injury and death through a proper recall, as well as against burdening the car owner with the costs of making up for Toyota's negligence on this issue. At the least they need to cover the cost of these necessary safety repairs when they are warned by the lights and reinstate their warranty extension for this issue ("POL18-03") which expired for my vehicle in August of 2021.

NHTSA complaint #11616998 — an unverified report by a vehicle owner.

Charlotte, NC

SERVICE BRAKES

have suddenly brake failture, w code c1391, it problem persist car do not stop by pressing brake , it is too dangerous to drive this car!!!! what you can help me w this recall or rebate option for brake repair?

NHTSA complaint #11614556 — an unverified report by a vehicle owner.

Garner, NC

SERVICE BRAKES

The Toyota Prius of this generation has a known defect in the brake booster pump assembly. About 2 weeks ago the dash lights came on for ABS, Traction control, general warning light. The brakes work but feel soft, and a motor sound pulses behind the steering column every 8-10 seconds. My mechanic pointed out it is a known problem where the ABS booster pump has a faulty valve that doesn’t allow proper pressure to build to engage ABS system. I cannot afford the Repair: $3890 for master cylinder and brake booster. My concern is that most people can’t afford this repair and without a functioning ABS system, people are put at risk from this generation of Prius. Toyota did offer a customer service program acknowledging the issue, but that program only helped if these issues occurred before 2022. With the known issue, why wasn’t a recall required? Toyota should be required to address this safety issue. How many of these Prius are on the road where customers are expected to perform a $4,000. Repair to keep up the safety standards. The car is available for inspection upon request. Thank you.

NHTSA complaint #11614025 — an unverified report by a vehicle owner.

Oldsmar, FL

SERVICE BRAKES

I was driving and all of a sudden the emergency brake light, the ABS brake light and a couple more turned on and I had no more brakes. I had just driven 25 miles with it and stopped at many red lights along the way with no issue and NO WARNING lights. I could have gotten into a major accident if it had happened anywhere else in my route. Fortunately, I was about a mile from my house and the hybrid motor helped slow the car down. I was unable to stop at any stop sign in my development and here again was very fortunate that there were no cars along the way. Once I got home, I got it towed to Toyota and was told it is an internal failure of the actuator. I contacted Toyota America and was just told that there was a campaign to repair this but that I had passed the date. My car has only been serviced at the same Toyota in my city since I got it. I religiously brought it every 5000 miles. I am shocked that they never mentioned this campaign to me and that they didn't initiate a repair during the campaign. This is a major issue that needs to be addressed and Toyota needs to be held accountable.

NHTSA complaint #11610467 — an unverified report by a vehicle owner.