Last post on Sep 03, 2013 at 5:22 PM
You are in the Toyota Prius
What is this discussion about?
Toyota Prius, Brakes, Hatchback, Sedan
Go to NHTSA to file a safety complaint.
Or call Monday-Friday (8 am to 8 pm ET) (888) 327-4236 TTY: (800)424-9153
#83 of 370 Prius Brake Failure/Delay - Dallas, TX
Dec 04, 2009 (10:04 pm)
Has anyone who has experienced the Prius brake failure/delay reported it to one of the Toyota dealers in the Dallas, TX area? I called all the service managers in the Dallas area and all of them denied this problem exists and said they had never had anyone report it to them. A few of them claimed all of these were made up stories from people who didn't want the Prius to succeed. Even after pointing out all the reports on the NHTSA website these few still denied the problem exists and still thought people were making these up. Given that the 5 other cars we've considered have a sum total number of brake failure reports of zero and I counted 50 for the 2004-2009 Prius in just a few minutes there is obviously an issue with more than just a few cars. I even called the regional Toyota Service Manager and got the infamous "since we can't duplicate it there is no problem and it is user error" crap.
The one question I could not get answered by either the service managers or the regional manager was if the 2010 Prius brake system was redesigned to solve this problem. I was hoping to confirm this was the case since we're really interested in the 2010 Prius.
#84 of 370 Re: Prius Brake Failure/Delay - Dallas, TX [rickpoole]
Dec 05, 2009 (4:34 am)
Certainly the rear brakes have changed, but I don't know that this requires a software change, and it is the software that I believe is the problem. One change they did make to the software (it is noted in the owners manual somewhere) is to record (black box style) information which would help diagnose what happened just prior to a crash. While having this information is a very good idea, it makes me suspicious that they cannot figure out what the problem is, or how to duplicate it, and are looking for data.
When I took my car into the dealership in Michigan, I came in with the many page printout of customer complaints posted at http://www.hybridcars.com/forums/brake-failure-2007-t1013.html . I appreciate that they took me seriously.
#86 of 370 Re: Prius Brake Failure/Delay - Dallas, TX [hal_cat]
Dec 09, 2009 (7:52 pm)
I have a 3 month old 2010 Prius II and applied the brakes on snow/ice this morning and the brakes completely locked up. I felt no ABS at all. I had let off the brake and pump it myself. I don't have much experience with ABS except our 2003 Honda Odyssey has them and when they pulse you feel them. Anyway, I'm near 5k miles and am going to take it to the dealer to change the oil, disable the incredibly stupid beeping while in reverse, and now report the ABS isn't working. I'm sure I'll get a bunch of bull-crap from them about the ABS. I'll repost once I see what they say.
#87 of 370 Re: Prius Brake Failure/Delay - Dallas, TX [kcbcarmichael]
Dec 10, 2009 (5:14 am)
ABS has no effect on snow, ice, sand, or loose gravel. If the road surface is loose or unstable ABS does not respond as it does on a wet, or dry road. The more advanced anti-skid ( ASR ) systems help prevent skidding and even spinning around, but NOT plain-old ABS.
#88 of 370 Re: Prius Brake Failure/Delay - Dallas, TX [whitey9]
Dec 10, 2009 (5:43 am)
That's interesting... I was driving my 2010 Prius on snow/ice near South Bend Sunday AM, and the ABS kicked in quite nicely when I did a panic brake maneuver. I have had the ABS work nicely under snowy conditions in my 1998 Saturn. And I learned the effectiveness of ABS under simulated icy conditions during a training program at the GM proving grounds in 1996. Granted, in these cases it was quite slippery, more like icy conditions rather than loose snow or gravel. One of the paradoxes of our technologies is that we tend to depend on them and therefore don't learn how to respond when they can't cope with the situation at hand, and we take bigger risks assuming they will cope.
#89 of 370 Prius brake failure
Dec 21, 2009 (1:49 pm)
I've had my 2007 Prius for almost a year now. Back in Feb I experienced the total brake failure problem. The parking break light was on (but the peddle was up), the ABS light came on, and the excamation point light was on. I aimed for some grass on the side of the road and coasted to a stop, and had the car towed to the dealership. They poked at it, and said there was a code (didn't tell me what) and that they had cleared it to fix the problem. Good as new.
4 days ago it happened again. same exact scenario. I managed to limp it home and take my wife's car to work that day. We took the car in again Sat driving about 25 mph the whole way. Wouldn't you know it, by the time I got to the dealership, the error lights went out, and the brakes were magically working again.
I told them to take the time actually figure it out this time. I didn't even get back home before they called me up to tell me they were ready for me to pick it up again. (Really? Full in depth investigation into a critical system failure in less than 20 minutes). I went back to pick it up and was told that the error this time was the error from 14000 miles ago that for no good reason the computer "pulled back up from cache". They said they did a hard-reboot on the computer and that it is now totally fixed.
This sounds like BS to me, and my wife won't let me drive my car anymore. Has no one figured this out yet? I love my car, but if I can't drive it, I might as well trade it in for something else.
The one thing I can add is that in both failures, it was very cold out. I have a tendency to leave the parking brake engaged when not in the car, and the first indication of a problem in both cases was that the brake light did not turn off when I released the parking brake. I don't know if that might help a gear-head figure out what is really wrong, but it might be a suggestion that Prius owners always do the same, and not leave the parking lot if the brake light stays on when they release the brake.
#91 of 370 Take responsibility for your own driving.
Dec 29, 2009 (11:40 pm)
One thing I think everyone should do is make sure they know the basics of driving.
What I mean by this is you should know how to drive a good old fashioned car with none of the bells and whistles or any of the electronic "crutches" that newer cars have. All the new "safety features" on newer cars are depended on way to much, resulting in drivers not having the requisite skills to drive the car safely if something fails. Any car that has ABS brakes will revert to good old fashioned standard brakes if something fails in the ABS.
#92 of 370 Re: Prius Brake Failure/Delay - Dallas, TX [kcbcarmichael]
Dec 30, 2009 (6:07 am)
They will not disablew the "beeping while in reverse gear" system, as this is a safety system, and in doing so, leaves not only you, but them W-I-D-E open to litigation. In other words, if someone one gets hurt or dies, they will change the name on your house deed, and the auto dealership sign to the victims' survivors.
As stated previously, ABS has NO effect on snow/ice/sand/loose gravel. Also, pumping the brakes is not recommended, just light constant braking way before the situtation becomes dire. Drive safely.