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Toyota Prius Brake Problems

82 messages,  Last post on Nov 29, 2009 at 11:57 AM

You are in the Toyota Prius Maintenance & Repair Forum. Your Host is pf_flyer

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


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#21 of 82
Re: Drove almost a mile with Parking Brake activated [pathstar1] by catt41
Jul 26, 2006 (3:45 pm)
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Replying to: pathstar1 (Jul 26, 2006 2:38 pm)

Nope, never made the 100 mpg even with the glide technique...but I know if you don't run the AC and if you keep off of the cruise on hilly roads, you'll save more fuel, too. Also, just driving slower - let people pass you. You'll catch up with them as you pass them at the next fuel station.
Dean
 
I tried my parking brake out today and REMEMBERED to take it off...I must not have hurt it too much because it was still working (doulbe )
#22 of 82
Prius brake issue by leonbayarea
Aug 12, 2006 (6:26 pm)
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My 04 prius has about 37K miles on it. About 5K miles ago, the brakes started pulsating at low speeds. with low to intermediate brake pedal pressure, the car would start jerking a little, as the brakes grab harder & softer. It has gotten worse since first noticed. The dealer checked them and found "no codes". It seems like either the regen system is not working quite right, or the friction brake controller is kicking in and out-like its out of adjustment. But the dealer couldn't help. Anybody out there ever run into this? Its starting to get bothersome...
#23 of 82
Re: Prius brake issue [leonbayarea] by countess
Feb 05, 2007 (1:25 am)
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Replying to: leonbayarea (Aug 12, 2006 6:26 pm)

The brakes on my 04 Prius have been causing me intermittent but potentially lethal problems over the last couple of months. I too have left my car into the dealer, who assured me that there was nothing wrong with the brakes, and yet sometimes, though I have my foot gently on the brake, the car manages to move forward, meaning I have to apply the brakes harder which is extremely dangerous, especially in icy conditions. Did you have any luck in sorting your problem out? I am looking for Toyota in my country to replace the car - -and am getting no where...
#24 of 82
Prius brake failure by kareen1
Jun 03, 2007 (7:33 am)
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I have also had a brake problem with my 06 Prius. On two occasions around 15,000 miles, the brakes failed to activate for 2 – 3 seconds, then they took effect. On the second occasion I started to swerve to avoid the car in front of me before the brakes took effect. On both occasions I was traveling at slow speeds ( under 30 mph), moving uphill, and braking with the intention of coming to a complete stop. There was no rain, sand or gravel, and the car was not skidding. The anti-skid light went on.
 
I took the car to the dealership, they could not replicate the problem, they said they could not find anything wrong & were going to return the car to me. I insisted something be done, so they sent a mechanic to observe as I test drove the car. I was not able to get the brakes to fail, but I was able to make the anti-skid light go on when it shouldn’t. The dealership then bled the brakes & returned the car to me.
 
That same day as I approached a stop light, the car did a strange, very slow anti-lock brake response. The brakes applied, then unapplied with about one to 1 ˝ seconds between each application. On two occasions since then the brakes have not applied for 2 – 3 seconds after I stepped on them. The anti-skid light went on one of those times, the other time I was too busy looking at the road to notice. I was going over a rough road surface, but not a surface on which the car was skidding.
 
I have noticed the anti-skid light goes on sometimes when the car is not skidding but going over a rough surface.
 
I really liked the Prius before this happened, but I do not feel it is not a safe car to drive until this is resolved.
 
2 additional links that talk about brake problems are
http://www.hybridcars.com/forums/brake-failure-2007-t1013.html and http://priuschat.com/index.php?showtopic=20093&hl=
#25 of 82
Re: Prius brake failure [kareen1] by pathstar1
Jun 03, 2007 (7:51 pm)
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Replying to: kareen1 (Jun 03, 2007 7:33 am)

It's a known condition that if you go over a bump violent enough to take a wheel off the road, it will trigger the traction control. That will delay application of the brakes. Several owners have reported this. It can happen on bumps you wouldn't think were that bad.
#26 of 82
Re: Prius brake failure [pathstar1] by stevedebi
Jun 04, 2007 (11:42 am)
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Replying to: pathstar1 (Jun 03, 2007 7:51 pm)

"It's a known condition that if you go over a bump violent enough to take a wheel off the road, it will trigger the traction control. That will delay application of the brakes. Several owners have reported this. It can happen on bumps you wouldn't think were that bad."
 
Is this unique to the hybrids or the Prius? I have had antilock brakes on my last several cars and have never had this happen.
#28 of 82
Re: Prius brake failure [stevedebi] by slowpedaler
Jun 15, 2007 (7:49 am)
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Replying to: stevedebi (Jun 04, 2007 11:42 am)

As has been stated relating to several braking issues, I believe the ABS activating on bumps is related to the lousy traction of the Integretys. My '06 Civic will occasionally do the same thing, but much less often, which I attribute to the better tires and additional weight of the Honda. My Integritys are wearing fast on the mountain road I drive all the time, thank goodness. I don't want to ditch them with useable tread left, but, I'll sure be happy to get them out of here when the time comes.
#29 of 82
Re: Prius Brakes issue [wkogler] by brendabei
May 17, 2008 (11:56 am)
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Replying to: wkogler (May 16, 2006 2:57 am)

My brakes failed yesterday in the rain. I was driving on a road that has old trolley tracks and I was only going about 20 mph and I decided to stop for a yellow light. I put the brake pedal to the floor and nothing happened. I just kept rolling downhill. No ABS nothing. If there had been something in front of me I would have hit it. After about 20 feet my brakes started to work and at that point the skid light came on. I was really lucky that this intersection has a stop 20 feet before the corner or I would have gone right through the intersection. Has anyone else had this sort of a thing happen to them? I am worried when it will happen again. I have taken to driving my honda minivan instead.
#30 of 82
Re: Prius brake failure [kareen1] by brendabei
May 17, 2008 (12:00 pm)
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Replying to: kareen1 (Jun 03, 2007 7:33 am)

I had the same problem that you did. What did you do to resolve this. I am terrified this will happen when my son is driving the car. He is only 17. So for now, we are not driving it at all.

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