Automatic Emergency Braking problems of the 2012 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.

On 10-17-24 these warning lights came 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.

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.

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.

I have had a 2012 Prius since 2016. The entire time I've had it, it occasionally "hydroplanes" but without any water. It happens in wet or dry (but mostly dry) conditions. Usually at slower speeds so, though it makes me very uncomfortable, it doesn't happen with any regularity. I've taken it multiple times to my mechanic who always says "prius' just do that", which is not reassuring. I know there was a recall and I was told my car did not fall under that umbrella. On Wednesday of this week, 10/25/23, I finally had an accident because of this. The brake lockup had been happening more frequently in the past week and in this instance I saw the car in front of me suddenly slow down - I had about 2/3 of a cars distance between me and the car ahead. I hit the brakes and nothing happened. I was pushing down on them long enough to think, "ok, this is it. They aren't responding at all and I'm going to hit this car in front of me. " I did and it crushed the passenger side of the car. Luckily I wasn't hurt. There were no warnings from the car at all that this was going to happen, as there never are. I took it in for possible repair today (the mechanic is not sure but thinks it may be a total loss). This car did everything they describe in the recall cases and I want to know if there's anyway to be repaid from the company for this as there was nothing I could do to stop this accident? why wasn't my car included in the recall?.

Error code c1391 confirmed by two separate facilities, described as "abnormal leak in accumulator" and "accumulator pressure. " took to an independent shop first, then to haley certified Toyota dealership. At dealership, parts needed were quoted to include TSB-0024-19. Three lights went on simultaneously (abs, traction, brake).

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.

The brakes fail and the abs module stops working correctly and when I go at a speed of 60 mph the brakes lock until the speed drops and they work again. The problem is with the abs module and I went to the dealer and the repair value is $3450 dollars.

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.

My teenage daughter was driving and almost had an accident because the brakes failed. No warning lights came on until the brakes failed. I am learning now that it is a brake booster pump that Toyota knows about it as they had issued an extended warranty on the same thing that expired last year. Toyota confirmed that my pruis was included in the customer service program but it has now expired.

My breakes failed when driving. I almost got in accident. Code c1391. Brake actuaror failure. Car has 200,000 miles. Toyota is denying to repair the car. It is well known problem with that but still not fixing.

While on the freeway, I was braking due to traffic and the car started shaking and the abs light, "brake" light and traction light all came on and remained on. The brake system did not operate properly, which nearly caused a collision.

Running errands and when I got back to my Toyota Prius v many lights were illuminated including my brakes abs tire pressure traction lights were all on. Tool my car to dealer for them to gladly request $5,000 to repair this. Dealership told me "the repairs are going to be a new master cylinder + new brake booster pump + fluids as needed for repairs" . This is a known issue for 2012 to I believe 2014 Prius model v. This is a huge safety issue and a manufacture error this should be recalled and covered by Toyota as shouldn't be any fault of my own. On today's world 5k is a crazy amount of money to fix a known issue thay could arise again. Toyota needs to do better to protect their customers. Shame on them.

My brakes gave out while driving with my infant child luckily I was almost home and made it without hitting anyone or seriously hurting myself and my child. Had car diagnosed error code c1256. Local dealership won’t repair because I “missed “ recall and my car has salvage title. I cannot afford to fix on my own and I’m shaking as I drive with my child to work everyday praying to get there in one piece because I have to work….

Abs actuator and booster assembly failing. No recall was issued but a safety bulletin to the dealer with a cutoff date and nothing issued to consumer to know it needs to be replaced. Now I am outside their service bulleting window with a 3,000 repair that should be covered indefinitely by Toyota.

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 .