15 problems related to software have been reported for the 2010 Toyota Prius. The most recently reported issues are listed below.
Brake/abs and stability system failure. Possible actuator or accumulator. Touota knows there is a fault and hides behind a software update. System fails and causes unreliable braking with increased force to apply the brakes. Brakes apply so hard at times the rear passengers heads hit the rear seat.
Car worked flawlessly and we maintained it regularly. Took it in to address recall of jov update pwr mgmt ecu at dealer. Dealer completed recall work. 2 days later engine lite check hybrid system and the ! on and triangle on. The car continued run but now was studdering when was not before the recall work. Took it back to the dealer and he said we need a new hybrid battery. We believe the software update they did created a this issue. Dealer acting ignorant and saying it needs new battery because of number of miles on car. Asked for diagnostic print out from when they did recall work to they new diagnosis and they would not provide. We believe the recall update created a technical problem with our hybrid battery. We also believe that dealer not being honest regarding issues with this recall update and is using it as an opportunity to reduce liability for Toyota on failed recall work and to use it as an opportunity to bring in large ticket sales repair ie they quoted us a new hybrid battery for 5,500.
Recall notice eoe was performed on my 2010 Prius to correct an invertor problem. A software update was performed. According to my dealer at capistrano Toyota as well as other dealers this was just a bandaid and not a true fix. The owner of capistrano Toyota as well as other Toyota dealers have written to Toyota that the invertor needs to be replaced. The dealer h,s had many cars come back after the software fix and had to have the invertor changed. If the invertor fails while driving, the car can possibly just stop running or slow down to 15 miles. This will be very dangerous and possibly deadly.
After changed all the 12v battery and 201v battery pack brand new. All the fluid; oil, cooling water, transmission also been changed new, even clean out the exhaust co2 deposit in the pipe, basically the engine been clean out like new. The problems now is not start or put into ready mode. Due to the inverter and icu u1 circuit board now sending the signal to the dash board. Dash board only show flashing engine light, push button show amber not green. I heard Toyota is recal the software on the inverter, this is not going to help, due to reprogram the key and the imobolizer cause the infor on the dash to shut down, the obdii cant even read or function. Now my 2010 hybrid is dead. I don't know what to do. Please help.
The contact owns a 2010 Toyota Prius. While driving approximately 50 mph, the vehicle lost power without warning. The vehicle was towed to the dealer where it was diagnosed that the electrical system fried the inverter and shut down the entire system. The contact stated that the software was an ongoing issue and overheated the inverter, which caused the engine to shut off and the vehicle to completely stop. The vehicle was repaired. The manufacturer was notified. The approximate failure mileage was 65,000.
The vehicle runs ok and a few minutes later the yellow triangle turns on, as well as the check engine light and the vehicle starts to lose power. After a few more minutes the red steering wheel light comes on along with the "check hybrid system" message and the rest of the lights and the vehicles loses all power and stops. It will normally turn back on but there was one occasion where it didn't and my husband had to push the car to a parking lot. I took the car in on the recall which should cover this but all they did was update the software and blame the issue on a car accident. I don't know if this is true as just purchased the vehicle but it sounds to me that they could have fixed the issue under the recall.
My brakes has always had a weak feel and it would lose stopping power when braking on a bumpy road. Its almost like, the brakes releases when you hit a bump. There are currently two recalls for the 2010 Prius but for some reason, my VIN number is not included in it. Is there any way we can get the dealer to perform the recall? its just a software computer update, but I have a feeling they will not do it since my VIN is not included in the recall. Even though I experience the symptoms of the 2 brake recalls for the 2010 Prius. Thank you.
The hybrid inverter assembly failed when I tried to accelerate from a stop onto a rural highway. This occurred approximately two months after receiving the motor generator ecu and power management ecu software update that was intended to prevent this type of failure. I was notified of this update/recall in late March 2014 and had the update completed at a authorized Toyota service center.
My Prius was recalled to limit current in the main power inverter as they are failing. These inverters are still failing even after the software modification. Toyota extended the warranty on the inverter as they know it could fail. I don't want to be stranded before they will address the problem!.
Was traveling about 65 mph on route 11 in CT when red lights come on and car slows to 20 mph. Pulle to side of road and called aaa/towed to hartford Toyota in hartford CT. First told it was a hybrid battery then told it was the inverter which they said is on back order. Now I,m getting the run around from the main office in California. . Brought car in for a recall on software update in Feb 2014 and from what I read this may cause the invert to fail thanks for your attention in this matter.
Fuse box cover left loose by dealer after Prius recall service. In the process of doing the engine software update for the Prius recall, apparently the Toyota dealer technician failed to engage the hooks & tabs at the back of the fuse box cover, and just "clicked" the front latch; this left the fuse box cover loose and exposed to water penetration. The loose fuse box cover might permit water to enter the fuse box compartment, causing a short. The short could shut-down car electrical systems causing a catastrophic shut-down of engine, air bags, power brakes, etc. This could easily result in loss of life, when the engine stops and safety systems (air bags) fail due to the short; this similar to the gm ignition recall issue. This is especially critical in a "drive-by-wire" car like the Prius. ==>the Toyota Prius recall is being done improperly (at least occasionally), leading to a much more serious safety issue. The could lead to passenger injury or death, at any time, without warning.
2010 Toyota Prius, no accidents, but close calls. When I am slowing to a stop, and if the vehicle hits a rough spot in the road, for example a pothole, the brake pedal lowers slightly and the car appears to have the anti lock braking take over and the car speed decreases slowly under the control of the abs and may not stop in the remaining distance to a stop sigh or traffic light. At least 4 times, 3 since the software update for my car, I have been stopping and within about 20 feet of the stop sigh there was a significant bump or pothole and with my foot on the brake continuously I noticed that the brake pedal depressed slightly and my rate of slowing decreased and my car drifted past the stop sign. This all happened with my foot still on the brake. I told the Toyota dealer about this and was informed that it is the way the car is designed, that any time that the computer senses a wheel slip, the abs takes over. But on dry road conditions, this is problematic because in my area there are often un repaired roads with ruts, potholes, bumps and etc. Near the intersections. Having the abs take over provides a lag time in the stopping of the car and each time I have gone past the stop sign and slightly into the intersection approximately 5 feet into the path of other vehicles. I am an engineer with nasa and know what I am doing and have been told that this is a design feature, but this feature can and has left me exceeding my planned stopping distance and could have lead to an accident.
Purchased 2010 Prius on Aug ll,09. Have returned to dealer 5 times, beginning on sept. 29, 09, to report same problem. . . Which is that at random times when I shift from "p" to either "d" or "r", the vehicle lunges and when I apply the brake, it is like hitting a brick wall. This process is repeated several times in sequence. . . Lunge, brake, lunge, brake. . Then it corrects itself and drives normally. I cannot predict when this will occur, sometimes it is weeks and hundreds of miles between occurrences; sometimes only a few miles and hours between incidents. The dealer always says they have not been able to reproduce the problem, therefore no diagnosis or repair. I have reported to Toyota customer ser. And was assigned a case #. Have had ongoing conversation with tcs rep to report this and several other problems, I. E. Various warning lights at inappropriate times. . . "key detected in vehicle" while driving down the road. . . Etc. Am always told "scan shows no problems". I think there is a problem with electronics. Unsafe, frightening. Latest incident on 3/05/10. Dealer installed software fix for brake recall on 2/10/10. At times must repeatedly move gear shift lever before it responds.
My 2010 Prius stalled in traffic cutting off all power including emergency flashers. The vehicle would not restart for 8 minutes. I immediately took car to the dealer and reported my problem. I was told it was a software glitch which was immediately corrected.
2010 Toyota Prius software defect in the engine control system. Consumer states while reversing before the start up operation is complete the brakes grab. The consumer parked facing an upslope at the dealer to get his license plate installed. To leave, the consumer put his foot on the brake and pressed the power button. As the dashboard started to light up, he shifted into reverse, released the parking brake and the foot brake and started to ease down the ramp. As the consumer applied the foot brake, the brakes grabbed badly. The consumer released and re-applied them, and again they grabbed. The grabbing was severe enough that the vehicle was not safe to drive and the consumer just stopped. The consumer believed the behavior indicated a defect in the software that controlled the start-up sequence. The control computer should not allow the vehicle to be shifted into drive or reverse until the power-on operations have been fully completed.