1. The ABS system failed upon inspection at a dealership. Specifically the ABS accumulator and booster. 2. The ABS system put us at risk by failing prematurely, and traction control and ABS functions seemingly stopped working while driving on the road. 3. Yes, dealership confirmed the issue with a full diagnostic, and the part has a customer support program bulletin/TSB out for this specific issue. 4. inspected by manufacturer dealership service center. 5. Lights such as the parking brake, ABS, and (!) lit up while driving and the failure occurred at the same time.
The worst 2012 Toyota Prius Plug-In Hybrid problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Brakes12
- Electrical3
- Acceleration2
- Engine2
- Transmission2
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Brakes12
- Electrical3
- Acceleration2
- Engine2
- Transmission2
- Driver assistance1
- Fuel system1
- Lights1
- Steering1
- Suspension1
- Wheels1
Trouble codes owners of the 2012 Toyota Prius Plug-In Hybrid mention
C1391 2
Recalls 2
Hybrid propulsion system
- What is wrong
- Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2012-2015 Prius Plug-in Hybrid vehicles. The hybrid battery contains an Electric Vehicle (EV) fuse that may fracture after repeated high-load driving conditions such as climbing long hills.
- Risk
- The failed fuse may cause the hybrid system to shut down resulting in the loss of power. Loss of power while driving at higher speeds can increase the risk of a crash.
- Remedy
- Toyota will notify owners, and dealers will replace the EV fuse, free of charge. The recall is expected to begin January 8, 2018. Owners may contact Toyota customer service at 1‑800‑331‑4331. Toyota's number for this recall is H0R.
Recall number 17V718000 · Recall details
Air bags: side/window
- What is wrong
- Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2010-2012 Toyota Prius, 2010 and 2012 Toyota Prius Plug-in Hybrid, and 2011-2012 Lexus CT200h vehicles. A weld in the curtain shield air bag inflator may crack causing one or both portions of the inflator to eject into the passenger cabin.
- Risk
- If either portion of the curtain shield air bag inflator ejects into the passenger cabin, there is an increased risk of injury to vehicle occupants.
- Remedy
- Toyota will notify owners, and dealers will install retention brackets to the curtain shield air bags, free of charge. The recall began on October 17, 2016. Owners may contact Toyota Customer Service Department at 1‑800‑331‑4331. Toyota's number for this recall is Toyota G0U, and Lexus GLJ.
Recall number 16V487000 · Recall details
See all 2 recalls for the 2012 Toyota Prius Plug-In Hybrid
Defect investigations
Brake Actuator Valve Wear
On September 19, 2019, the Office of Defects Investigation (ODI) received a defect petition from Mr. Roger Hogan requesting that the Agency investigate and recall certain Toyota Prius, Prius PHV, Camry Hybrid and Avalon Hybrid vehicles for a brake actuator valve wear condition covered under Toyota Customer Support Programs ZJB and ZKK (subject CSP?s). In support of his request, the petitioner identified 117 the federal safety agency complaints allegedly related to the subject CSP condition, including 60 reporting crashes. On September 30, 2019, ODI opened Defect Petition DP19-004 to evaluate the petitioner?s request for an investigation. In August 2020, the petitioner notified the Agency that he was withdrawing his petition. Because the petitioner has withdrawn the petition, we are denying the petition as moot and no further analysis of this petition is necessary.the federal safety agency is authorized to issue an order requiring notification and remedy of a defect if the Agency?s investigation shows a defect in the design, construction, or performance of a motor vehicle that presents an unreasonable risk to safety. 49 U.S.C. ?? 30102(a)(9), 30118. Because the petitioner has with withdrawn the petition, the petition is denied as moot. This action does not constitute a finding by the federal safety agency that a safety-related defect does not exist. The Agency notes that it is not required to receive a defect petition prior to opening a defect investigation and will take further action if warranted by future circumstances.
DP19004
Technical service bulletins for the 2012 Toyota Prius Plug-In Hybrid 93
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Condition in which a musty odor is present
- Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical...
- To prevent brake rotor rust from forming during transportation and storage, wheel film will be used...
- The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix...
- Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal...
- Vehicles may occasionally be subjected to contamination by airborne iron particles shed from railroad...
- Condition in which a musty odor is present
- Toyota vehicles are currently protected with RapgardTM protective film designed to protect the horizontal...
- This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life...
- POL: This consolidated Tire Warranty Guide contains the complete warranty terms for all brands of ground...
See all 93 bulletins for the 2012 Toyota Prius Plug-In Hybrid
What 2012 Toyota Prius Plug-In Hybrid owners say
Most recent owner complaints, unedited.
Today 05/25/2024 noticed a slight camber on the right rear wheel. Jacked up the car and removed the right rear to take a closer look and realized the rear axle/subframe was splitting in half along the weld point. If I hadn't caught this today and my daughter was driving it I'm confident she or others would have been killed or severely injured since most of her driving is highway related. The part that is blowing my mind is the vehicle was at the dealership twice in the last month and no one noticed when on a lift. The car is now permanently on jack stands till it can be repaired. I'm not sure it will even hold together to get onto a tow truck. I will not attempt driving do to safety specially others. I witnessed a tire go through a vehicle resulting in the death of someone.
The contact owns a 2012 Toyota Prius Plug-in Hybrid. The contact stated that while driving down a winding road, the brake warning light and brake message suddenly activated and while depressing the brake pedal, the pedal extended to the floorboard and the vehicle would not immediately stop. The vehicle was later taken to the local service center who diagnosed that the brake booster, brake master cylinder, and brake booster pump assembly were faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer and local dealer were notified of the failure, but no assistance was offered. The contact was informed that the vehicle did not qualify for the manufacturers extended coverage regarding the failure. The failure mileage was 130,000.
I was driving less than 55mph on freeway on February 5, 2024 when my vehicle went into an out of control spin, Brakes did not seem to work and unable to control vehicle until hit center divider on freeway, Spun 180 degrees and kept going back with no braking until hit center divider.
The contact owns a 2012 Toyota Prius Plug-In Hybrid. The contact stated while driving approximately 70 MPH, the stabili-trak, ABS, and a several unknown warning lights were illuminated. The contact stated there were also audible alarms being sounded. The contact depressed the brake pedal and the brake pedal failed to respond. The contact stated that she was able to coast the vehicle off the highway and shifted into park(P) and turned off the vehicle. The contact turned off and turned on the vehicle and attempted to depress the brake pedal; however, the brake pedal was abnormally firm. The contact had the vehicle towed to a local dealer, where it was diagnosed and determined that the brake booster pump assembly needed to be replaced. The vehicle had not been repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 130,000.
2012 level 5 plug-in I was driving on the freeway with radar cruise control and the vehicle dash lit up with check pcs system ever warning light came on the brake petal was not there as normal it would go about half way down to engage very scary I took it to the dealership service said I need new brake booster installed not covered under warranty 130k miles
Brakes failed while I was slowing down for a speed trap; if I had been stopping for traffic I would have been in somebody's back seat. There was already a class action lawsuit about this that Toyota settled out of court. We were supposed to receive notice about the extended warranty related to this but did not; additionally the dealership lied to us on two different occasions about our brakes being fine after they started behaving differently. If the dealership hadn't lied in both 2020, and 2022, my life wouldn't have been in jeopardy, and we wouldn't be paying thousands of dollars to fix a defective part. Why are you putting so many people's lives at risk by not forcing Toyota to issue a recall? All their hybrid braking systems over a decade of models have this issue. The hybrid specialist mechanic we ended up with said he sees several cars a week with this issue.
The brake booster pump started pressuurizing frequently last year around 140,000 miles. Error lights and less responsive breaks this year so I called Toyota service they said bring it in. They said repair is over $3000. The mileage was just over 150000 and just over 10 year extended warranty I didn't know about for this problem coded c1391
The brake pressure pump comes on every 2 seconds. The warning lights on the dash are on for brakes and abs. The car still stops but it reacts slower to pedal pressure. Dealer says it needs master cylinder and actuator pump for 3000$ at least. It is available for inspection, has 155,000 miles now, but pump has been hyperactive for about 12 mo. May be a hazard now, may fail completely ,I don't know. But too expensive to me to fix. Has only been inspected by autonation Toyota, not police etc. Pump was overactive for a year but right after anautomatic car wash the lights came on an the brake pedal got mushy. Then I called dealer. Apparently a common problem that was a recall for 2010 and silent recall after for later model gen 3s.
I bought a first generation Toyota Prius PHEV in 2012. Apparently a Customer Support Program notice was sent out two years ago which I never received. For the last year or so my Prius has made a hissing sound when I stepped on the brakes unless I push extra hard on the pedal. Didn’t think anything of it until last month several lights went off. I took it to Big O Tires and they added brake fluid and the lights went away. Next month it went off again, I took it back and they suggested taking it to a dealer. I take it to Tustin Toyota they diagnose it as a Brake Booster and Pump problem. My issue is that I never received a mailer or email like I did for previous recalls. I did transfer ownership to my wife a while back, so I don’t know if that DMV administrative change impacted the mailer. It is a safety concern as my wife drives our two kids and the brake had signs but we did not take it in to the dealer until the failure lights lit up 11 months after the expiration. Is there a chance that a Customer Support Program becomes a Recall if the federal safety agency receives enough complaints?
Compare the 2012 Toyota Prius Plug-In Hybrid
Other model years
Questions about the 2012 Toyota Prius Plug-In Hybrid
Is the 2012 Toyota Prius Plug-In Hybrid reliable?
Owners have filed 25 complaints about the 2012 Toyota Prius Plug-In Hybrid, 2.1 times a typical Prius Plug-In Hybrid model year.
What is the 2012 Toyota Prius Plug-In Hybrid year score?
The 2012 Toyota Prius Plug-In Hybrid scores 49 out of 100 (below average). The score compares it with the other model years of the Toyota Prius Plug-In Hybrid: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2012 Toyota Prius Plug-In Hybrid?
Brakes, with 12 complaints, typically around 130,000 miles. Next is electrical (3).
How many recalls does the 2012 Toyota Prius Plug-In Hybrid have?
2 recalls, covering hybrid propulsion system and air bags.
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