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Toyota Prius Brake Problems

366 messages,  Last post on Mar 27, 2013 at 6:44 AM

You are in the Toyota Prius Maintenance & Repair Forum.

What is this discussion about? Toyota Prius, Brakes, Hatchback, Sedan

    
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Messages Page 36 of 37

#346 of 366 Re: 2010 Prius Breaking/Acceleration Problems [michaelroy] by lovedove41

Jun 20, 2012 (7:21 am)

Replying to: michaelroy (Jun 19, 2012 3:56 pm)
Is is strange that they were the ones who wanted to start this whole arbitration process? They were the ones who mentioned it first and the conversation prior to that wasn't about going to court at all??

#347 of 366 Re: 2010 Prius Breaking/Acceleration Problems [whitey9] by cgolliher

Jun 20, 2012 (12:05 pm)

Replying to: whitey9 (Jun 20, 2012 6:49 am)
Well Whitey, I consider that car a "death trap" because the braking system was the worst I have ever driven and I always felt like I was on the verge of not stopping and at any moment being at high risk for being involved in a collision that could end my life. I NEVER allowed either of my teens to drive the car because of this fact. So please don't tell me what my car was or was not. You would certainly feel like an jerk if someone out there today or tomorrow in the same car exp brake malfunction and dies as a result.

#349 of 366 Re: 2010 Prius Breaking/Acceleration Problems [lovedove41] by ks2010prius

Jun 23, 2012 (9:09 pm)

Replying to: lovedove41 (Jun 19, 2012 3:35 pm)
I have a 2010 Prius IV and with the exception of the brakes it has been a safe and reliable car. I have not had any problems with unexpected/unprovoked acceleration. The cruise control has performed flawlessly. I have had problems with the brakes under certain conditions but not near as bad as some of the reports I have read. I tend to believe some of these are exaggerated.
I first noticed a braking problem the first winter after I purchased the car, in Nov 2010. During a soft stop when one wheel went over a pothole or drop in pavement, such as after a bridge where the asphalt was lower than the concrete on the bridge, the brakes would fail for a split second. This happened sometimes when I slowed down before a stop sign or stop light and hit a pothole with one tire. It also happened if I braked when one front wheel was on pavement and the other passed over a patch of ice. In these cases would lose brakes for about for about 6 feet, then they'd catch. I took the car in and the dealer couldn't find any problems. After it happened several more times that winter I took it back again. They said there was a software update that should correct the problem. It didn't. Sometimes the brakes fail, for a short distance, under the same circumstances. It has never occurred during a hard stop, only during a soft stop and under 30mph. I believe it has to do with the regenerative braking and ABS systems not working together properly. I've learned to live with it and always leave plenty of stopping distance, and avoid potholes when I come to a stop.

#350 of 366 Re: 2010 Prius Breaking/Acceleration Problems [ks2010prius] by bioman

Jun 24, 2012 (9:45 am)

Replying to: ks2010prius (Jun 23, 2012 9:09 pm)
I too own a 2010 Prius 4 and I too went through a similar process of learning to live with the switchover from regenerative barking to ABS. It is not a "flaw" it is the way the systems are designed, to date. Toyota is not the only manufacturer using a similar regenerative-ABS barking system. The other manufacturer's hybrids are experiencing a similar barking response during the switchover. So I've taught myself and my wife how to respond when barking systems causes that moment of "anxiety". We still have faith in the car and we are still happy we made the move over to the Prius. We have over 42K miles of low maintenance costs and no problems except for adjusting to driving a hybrid vehicle.

#351 of 366 2010 Prius unintended acceleration accident by lily2012

Jul 31, 2012 (6:07 pm)

I have a 2010 Prius, about 26500 miles. Just two weeks ago, I experienced very bad accident by unintended acceleration. I was backing this Prius slowly towards the left direction ( I needed to go to right direction) in a flat and dry surface, my foot was on brake--like we all do when we are backing. All the sudden, it started accelerating, in a few seconds, it turned >360 degree clockwise. I then passed out because of the fast turning and because I was so scared. The car kept going wild, passed two curbs and hit a truck backward and bounced back, then stopped by itself—because two tires on driver side got exploded when the car passed two curbs.
 
Fortunately, no one was in the truck. Since the tires go flat before it hit the truck, I guess it was not as fast as it began accelerating, so I didn’t get injured.
 
The local Toyota collision center checked the car and told me there was no problem with brake and gas paddle. They didn’t believe me and said they never heard of Prius unintended acceleration problem.
 
Insurance said it’s my fault.
 
I claimed the problem to Toyota. They said we can inspect your car, but it will take up to 3 months. And I need to pay the parking fee in the collision center. Is this crazy? Anyone has a suggestion as what I need to do? Thanks a lot!

#353 of 366 Re: 2010 Prius unintended acceleration accident [whitey9] by imidazol97

Aug 04, 2012 (4:59 pm)

>hen I need to stop my car, i just push DOWN on the brake pedal. I do not ride around in circles tying to see how much damage I can inflict.
 
Your statement that the poster tried to see how much damage he/she could do as a result of the quick movement of the car sounds like you are saying the poster intentionally did this? I disagree.
 
You weren't there.
 
>When I need to stop my car, i just push DOWN on the brake pedal.
 
That didn't work for several people who claim their toyota products had runaway acceleration in the forward mode. Despite the floormats, sticky accelerator pedal sensor unit, and the use of NASA to supposedly rule out ALL electronic malfunctions of the drive-by-wire of the nonhybrid toyotas, I don't believe it is all solved.
 
I read that this poster had something unexpected happen in reverse and that caused the driver to lose control. It seems as if the spinning or surprise caused them to faint or become uncapable of trying further to control the car. I accept that. Our concern is did the car do something unexpected, not was the poster trying to do as much damage as possible.

#354 of 366 Re: 2010 Prius unintended acceleration accident [lily2012] by ks2010prius

Aug 06, 2012 (4:07 pm)

Replying to: lily2012 (Jul 31, 2012 6:07 pm)
I have to agree with the other post questioning the validity of your incident. It sounds like you were high, or low, on something. I doubt that a Prius turning circles, frontwards or backwards, can turn enough Gs to make one pass out. Why didn't you turn of the car off, try placing it in park or forward, or press on the parking brake. Since you didn't mention this I have to think you are not telling the whole story. If you are telling the truth then turn your car over to Toyota and have them extract the data from the on-board computer to see what really happened. I'm sure insurance claims agents have heard it all.
 
I've had my 2010 Prius for 45,000 miles and it's been a superb car, saving me a LOT on gas. It's one of the few cars that delivers the MPG they advertise.

#355 of 366 Re: 2010 Prius unintended acceleration accident [ks2010prius] by lily2012

Aug 07, 2012 (6:17 pm)

Replying to: ks2010prius (Aug 06, 2012 4:07 pm)
I was trying to stop the prius when i saw a car coming on my way. My foot was on brake. But the car itself suddenly accelrated, and turning >360 degree backward in a few seconds. I can't control the car when the car was going crazy like this. I was very scared that I passed out. I am a female, never had experienced such a terrible situation.
 
I found a website describing the unintended accelration in two situations: low speed and high speed. "low speed" refers to when we are parking or or backing up or trying to change a parking position when the car accelerates by itself; "high speed" means when we are driving it froward in relatively high speed. My case is the "low speed" one.
 
I contacted Toyota. They will take the EDR (Event Data Recorder) to analyse--it will tak up to 3 months for them to do it! But I am afraid they will conclude that I stepped on both Brake and Gas paddle at the same time, like some posters said.
 
I was pround of my Prius before the accident. I told a lot of coworkers how fuel efficient it iwas. Some of them brought Prius recently, some of them were planning to buy. But now I am much more concerned of safety than saving gas. When they heard of this accident (some of them saw it), a lot of them don't want to go with Prius.

Messages Page 36 of 37

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