Prius (2010-12) :: Low Rumble / Groan From Brake Pedal Area Once Stopped
Aug 31, 2015
My 2015 Prius with 1,300 miles on it makes a rumble/grumble/moaning/groaning sound after I have come to a complete stop. It can be felt in/on the brake pedal. (Stop light, etc) It lasts for a few seconds then stops.This low rumble has me concerned. It has a slight vibration to it too. (again this is NOT while driving. Only once stopped and foot resting on the brake pedal) I can't confirm it has anything to do with the braking system but seems to come from the general area of the brake pedal and when foot is on the brake. So I assume it's the brake system.
I know about the typical brake servo actuator noise (which is completely normal and I am very familiar with) but thats a light unintrusive noise. Distinct from this low grown noise. (I know the difference) I hope I am correct in assuming the computer would detect if there's anything wrong and throw a light... but I'm new to Priuses. Is this a normal sound/vibration? I know these cars do a lot of electric things so if it's normal, I'll try to ignore it.
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Purchased a used 2010 Gen III a few months ago and have noticed a fast buzz, felt through the floor and brake pedal. It is intermittent but the conditions needed are:
1) Air conditioning running at high speed
2) Vehicle in Drive
3) Immediately approaching a stop, and a few seconds after stopping.
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9,000 miles on the car and "brake groan" still experienced, mostly after car parked overnight (1-2 nights).
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ABS, Traction, Brake (red & yellow) bulbs in.
ABS not working
Reduced brake efficiency
Heated brake disks
Regeneration charge indication doesn't go to left side much. But slightly charges battery.
ABS fuses ok in engine room
No vacuum sound in brake pedal
But faster brake actuator sound (every 5sec stop 2sec sound) on stopped ready mode in P. Engine not running.
Bit history;
I had brake light fuse blown. But not knowing was pressing brake pedal hard to start / goto ready mode as display said. So after replacing fuse, had the traction bulb on. After it was reset. Everything was fine. Apart from increased vacuum sound in brake pedal.
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It seems about once a week the rubber cover that goes over the food pedal for the parking brake comes off. I've been careful to replace it correctly but it still keeps happening? Btw it's a 2010 v with atp ...
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I had a problem with my brakes about 4 months ago. They were making a barking noise when I stepped on the brake pedal. The dealer bled the brakes and reflashed software. Now the problem is back and they say I probably new a new brake actuator. It should be covered by the extended warranty. I hope a new actuator will fix this. I like everything else about the car. (Have 37,000 miles)
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I am looking to buy a 2012 Prius and I test drove it. Everything seems ok except each time I press the brake pedal there is a swoosh noise its as if air is being released from somewhere and I can easily hear it. Is this normal? the car is 95000 km on it. The dealer says it might be a normal hybrid noise. I currently have a 2007 Prius but that does not make this noise.
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I recently purchased a new (to me) 2010 prius and I've been noticing that sometimes, but not always, I hear a fairly loud noise when lifting my foot off the brake pedal. It sounds like a squeak or squeal, and I want to say I can almost feel a tiny bit of resistance in the pedal when it happens though that could be in my head. The noise does NOT occur when pushing down on the pedal (only when lifting), and it seems to only occur when the car is stopped.
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This has happened twice now, about a month ago and then again today.
I was stopped at a light with my foot on the brake. There is a clunk noise, then the indicator light comes on.
The first time I tried to go, and the car stayed put. I hit the parking button, then went back into gear, no problem.
The second time I just put it in park and then back to gear. No problem.
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So I noticed this has happened a few times.. If I press on the brake pedal too hard, the indicator light will come on and then turn off a few moments after I depress the brake pedal. This has happened when the car is stationary as well as when I was coming to a stop, it's happened maybe 5 times since I picked the car up a few weeks ago. Is this normal behavior or an indication of a problem? Just an FYI, I'm not talking about when the indicators light up when first starting the car.. This is tied strictly to pressing the brake pedal hard.
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I recently purchased a 2014 Prius with the package 5 trim. I'm completely loving the car, but noticed when stepping on the brake pedal I hear a soft "swoosh" noise from under the dash. Almost like a short vacuum or sucking sound. The car has 500 miles, and I don't recall hearing that noise initially.
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I have the regular Prius 2012, The brake pedal is attached to a rod that goes into a flex boot and then into the ABS module in the Engine compartment. The Boot is leaking sticky greasy/oily fluid. It not a constant leak. Its like it leaked on a Hot day and then stopped leaking.
Its not the one from my car, but its what I'm calling the ABS Mod Is this not just the lubricant for the Pedal or is this real brake fluid from the ABS module leaking into the Car? took it to Toyota and they said they had never seen this before and they are recommending to replace the entire ABS Module and Brake Fluid at a cost of $3346 + Tax. (roughly $2700 in parts)
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We have a new 2015 Prius with 6k on it and we are noticing one solid brief single click when the brake pedal is pressed and/or released. It doesn't happen every time (just some of the time) but it is only noticeable at slow speeds.
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I have a 2010 Prius Hybrid and lately, on an intermittent basis, I will press the brake pedal and push the start button and the dashboard lights up as normal but when I go to put it in gear nothing happens. The last time it happened the fan was running and I couldn't turn it off. It's like the car is all set to go but all the interior controls don't function. I then shut it off and restart it and everything works.
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I have an 02 rodeo ls 2wd with 110k miles.. I am having a lot of brake issues. 3 months ago i had front pads rotor and rear shoe's installed.then i started to feel maybe once a day a hard chatter in the brake pedal and a clicking sound coming from the dash area..so i took it back to pepboys and they said it was warped drum..so they installed new drums as well.
Well the clicking noise behind the dash is still there and the chatter in the pedal still happens.....when the pedal chatters the truck wont stop so it's kindda scary.
Also sometimes (it will last for a day or 2 then disappear) when coming to a slow stop the brakes make a rubbing noise like a waa waaaa waaa waaa as the tire rotates to a stop..I've been to pepboys 4 times and of course the noise never happens for them.
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I have a 99 Blazer 4x4 with ABS. Brake pedal just went to the floor and car stopped eventually ... a bit scary. I've checked all the brake lines and the inside of all wheels and there is no sign of fluid anywhere. All pistons seem to be where they need to be with backing plates nicely visible.
I pumped the brakes quite a few times and same result ... but I'm not pumping fluid on the ground. As expected I've also checked the reservoir and its full. Didn't see any leaks so its full. I'm guessing that the master cylinder has given up the ghost ... truck has 470,000km so things wear out.
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I'm getting this checked today most likely as it's been happening for months now. No issues with vibration and stopping is fine. As a matter of fact brakes are excellent. However when I'm stopped at a light or whatnot and I depress the brake pedal there's a pulsation that occurs almost every time. It's fairly constant and only happens when I'm at a stop not when I'm stopping so I know it's not a warped rotor. What it might be?
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My question is this...when my foot makes contact with the brake pedal there is about a quarter or half inch of "space" where I can push the pedal forward before you can feel whatever the pedal pushes against make contact and begin applying braking.
This dead space area will always activate the brake lighting but until you reach that next part under the dash somewhere no braking occurs.
I am quite used to driving my 2010 and this doesn't occur....can not remember if the 99 has always done that and i just realized it or if this is a new issue.
Brakes and stops great with and without load. No issues otherwise. Pedal pops out quickly and normally when taking your foot off.
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Is it normal on the 2.0T that when you are driving and stop at a red light to get vibration that you can feel in the car and hear in the motor? As soon as you let off the break it stops and the engine stops the noise. I don't drive the car enough really (my wifes) to know if it is normal or if this just started. It is an 07 and just turned 12k on the weekend trip. Also, having a problem on Sat radio with there being a high pitch hum in the back ground? [IMG] [URL] ...
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Every time I push the pedal I hear a faint high pitched squeak ?
Also cargo area has a rattling sound that increases at highway speeds.
280 miles.
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I have a Camry at 120K now. Front brake pads was placed at 85K and was told by the maintenance person at that time that brake rotors couldn't be resurfaced since they were close to the minimum thickness.
Braking seems still fine these days. I don't hear any high-pitched noise or feel obvious vibration/pulsation when the brake is applied. The brake pads are still within a good range of thickness as the last check was made a couple of months ago.
But the brake pedal is softer than before so that now I have push harder to get car stopped. It that a warning sign which indicates it is time to replace the brakes rotors and pads?
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