2012 Toyota Prius Transmission Problems

Which parts fail

• Automatic transmission
  1

Components named in complaints (automatic and manual transmissions, CVT, axles, driveshaft, 4WD/AWD).

Mileage when the problem started

• Under 25k
  847%
• 25k–50k
  16%
• 50k–75k
  16%
• 75k–100k
  741%
• 100k–150k
  00%
• 150k+
  00%

Owner reports

Selected complaints filed with NHTSA by 2012 Toyota Prius owners, lightly cleaned up (personal details are redacted by NHTSA).

The contact owns a 2012 Toyota Prius. The contact noticed that there was a significant amount of water on the floorboards from the windshield whenever it rained heavily. Additionally, the contact stated while at a traffic sign on a hill, the vehicle would roll backwards while in drive when she took her foot off the accelerator. The contact did not notice any warning lights. The contact also noticed that while parking the vehicle, whenever the PARK button on the dashboard was not depressed while the vehicle was running, the vehicle would roll forward. The contact took the vehicle to the local dealer, where it was not diagnosed and was not yet repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 80,000.

I went into Toyota of Fort Walton Beach, FL to remedy a recall (NHTSA Recall Number 18V684). She said that this recall is not on their list and thus would do nothing. I want this recall repaired as presently there is a safety risk. There are phrases in this recall of "1 unrepaired recall" and "Recall incomplete".

Tl* the contact owns a 2012 Toyota Prius. The contact stated that after the vehicle was parked, it rolled away in reverse independently. As a result, the vehicle rolled over the contact's leg and crashed into a building. The air bags failed to deploy. The contact sustained a broken leg, a fractured knee that required medical attention. A police report was filed. The vehicle was towed to a body shop where the technician informed that the vehicle was operating as designed. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 15,000.

I pulled into my driveway and pressed the stop button to put the car in park and shut off the engine. I got out of the car and left the driver's door open. I walked to the mailbox to get the mail and heard a crash as the car drove off and hit a tree and landscape wall.

After starting the car, it would not go into gear. The dashboard was lit but I could not get the car moving. After fiddling around for sometime, it finally clicked and I was able to go into reverse. The car functioned fine until later that day I made a drop-off stop and the same thing happened. The dash board was lit but I could not get the car moving. I was stalled almost in the middle of the road. The next day I took it to the local dealership and they did the most extensive computer generated diagnosis on the car but could find no indicators of the problem. I reported this to Toyota headquarters who said they'd investigate but there is no internal system for reporting back to me on their findings. I did research on the consumer reports website and saw others have reported similar problems. My fear is getting 'stuck' in unwanted times and undesired locations. …

When I was making a right turn I heard a loud "boom" sound and had to grab my steering wheel hard so I wouldnt drift onto the other lane because my car was shaking and skidding then right after my car emergency dash lights came on and told me system failure park your car immidently keep in mind while this was happening my car only went up to twenty miles per hour with my car making a loud sound as if I was going 80 MPH it sounded like I was speeding when I was only going about twenty miles per hour.

I was getting ready to pull out of a parking space in a parking lot. The car was in park, so I pressed on the brake, started the car and put it in reverse. All of a sudden there was a loud roar and the car shot full speed in reverse, completely out of control. It clipped the bumper of a parked car and some shopping carts, then backed into a wall which stopped the car. Miraculously no one was injured. The car has been totaled.

Vehicle stability control, anti-lock brake, and traction control lights intermittently turn off. A few times it shut down the hybrid system and tell me to stop . Now all those lights are all on and I am driving without vss, ABS and traction control. Braking is getting harder. I took it to the dealer and they told me the cost is $3500. I did some research and found out that this is a known Prius problem problem

I received the warning, please check hybrid system. After checking the DTC the following code appeared on the computer: p0a08:dc/dc converter circuit status which indicates an inverter problem. Looking at the recall website using VIN number, showed no recall concerning this. The problem happened many times while driving on a city or a highway

Vehicle was in motion traveling about 50 MPH when an effort was made to pass another vehicle on a 2 lane road, the vehicle lost power while we were passing, we barely got back into our lane and just barely avoided a head on collision. Then the vehicle slowed to about 15 MPH and limped to a stop a mile later. We could have died.

Transmission complaints in other Prius years