2012 Toyota Prius V driver assistance problems

Filed May 11, 2025 · Airbags, Driver assistance · CA

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

Filed Jan 17, 2025 · Brakes, Driver assistance · AZ

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.

Filed Apr 11, 2024 · Brakes, Driver assistance · IN

I was driving when I felt my brake pedal start to become soft and mushy. I was able to brake, but I had to pump the brakes to get full brakes to stop. I also noticed warnings began to appear on my dashboard. The warnings that were shown are the brake light, traction assistant light, and ABS light. I took it to Gates Toyota in South Bend, IN and paid for a brake inspection. They told me that my brakes themselves were OK (pads, rotors, calipers), but they were getting a C1391 error. I was told that the brake accumulator has an internal leak. I was told that I needed to replace the brake master cylinder and brake booster pump assembly. I bought the car used from the dealership about a year and a half ago. After doing research, I found that this same issue has been a common recall problem on a number of Toyota vehicles starting as far back as 2008. I also found a few class action lawsuits concerning Toyota vehicles with the exact same issue. My vehicle doesn't show any current recalls, but I'm having the same problem as other Prius V vehicles are having. I was quoted $3300 to fix this problem. I shouldn't have to be responsible for paying for a defect that has been recalled on a very large number of vehicles, and also has been the result of class action lawsuits.

Filed Feb 1, 2024 · Brakes, Driver assistance · FL · crash · 2 injuries

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.

Filed Jun 15, 2023 · Acceleration, Driver assistance · NC

ABS Unit failure (may also be called ABS CONTROL MODULE ACTUATOR AND PUMP ASSEMBLY). Three mechanics, including a Toyota dealership, is unable to reset the system to correct. The PCS system cannot be disabled which, in turn, means cruise control is no longer operable.

Filed Feb 23, 2021 · Driver assistance · 173,943 miles · NC

All the brake lights popped on and check engine light . There was a radal in the engine I got the check engine light check it was multiple mis fire so I changed spark plugs and coil packs .yesterday the vehicle stalled while moving and wouldn't go no where else . There is a recall on the car that my fiance just got in the mail and toyota in goldsboro nc doesn't want to do anything about it .

Filed Jul 27, 2020 · Driver assistance, Electrical · 59,670 miles · CA

[xxx] car does not starts stalling does not lock or unlock does not respond to key fob does not respond power button or start button makes some kind of noise with all lights blinking redacted to protect personally identifiable information pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

Filed May 21, 2020 · Acceleration, Driver assistance · 113,221 miles · WA

Toyota prius v 2012 lost power as I was driving out of the parking lot. I had to make emergency stop on the side of the road because inverter/electric motor failed. Mechanic ran computer test and found that problem codes indeed pointed to failure of inverter.I called local dealer mccord toyota and was told my car does not fall to extended warranty of inverter and did not offer any help. Same day I called toyota customer care at 1‑800‑331‑4331 and they told me that my car does not fall under inverter warranty based on my VIN number, and gave me case number 2005072419. I was able to call my insurance company to arrange towing from my location to repair shop. Repair shop completed work and vehicle is now in operable condition. I feel lucky that I was not on freeway and did not have my children with me when it happened.

Filed Mar 17, 2020 · Brakes, Driver assistance · 117,000 miles · FL

This complaint is for a 2012 prius v that I've notified my local dealer and toyota about a possible safety issue relating to the brake booster. The prius v is currently not included in the zjb customer support program and I believe it should be. Brake pedal feels very firm and inconsistent and much harder to activate the brakes. There is constant (every few seconds) brake booster actuation/whirring consistent with symptoms of a leaking/defective brake booster per my local dealer. Warning lights for brake, ABS, stability control, and tire pressure are on.

Filed Nov 4, 2019 · Driver assistance, Electrical · 180,000 miles · MD

After repair of stalling engine condition: vsv valve replaced, a software update subsequently was performed on my car (jov recall). Ever since that software update it hasn't been safe to drive my car : unsafe breaking, really hard breaking, especially on highways and untimely dashboard lighting related to trac/vsc, check engine and hybrid warning light