Prius (2010-12) :: Strange Noise While Braking And After Turned Off
Nov 23, 2014
I have a 2010 Prius which I have had for a couple years. I get this strange noise from time to time that happens while braking. It starts, it will do it for a while, and then go away. When it's doing it, It will also happen after I turn my car off when the engine does it's shutdown phase. Occasionally, when my car is not moving and the engine is off, if I push my brakes it will do it too.
The noise comes from the driver side, by the firewall. the noise is a loud rachety sound, and it does not sound healthy or normal. I took my car to the Toyota dealership 3 different times explaining what was going on, but since it is random in when it happens, they have always told me everything looks normal. (of course I am out of my 1 year warranty too I got when I purchased it used.)
Is this noise something I should be worried about? What it is? Last thing I want to do is burn out some component of my car when I can save it now.
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Yesterday morning, my 2010 had a very strange noise happen at startup. I'll preface this by saying that it was very early in the morning and I wasn't quite 100% awake, so the exact chain of events are a little foggy to me.
It was about 65 degrees when I went to start the vehicle in the morning. I noticed it was pretty humid out and the first humid morning of the year (I live in central PA). When I hit the power button, a very loud noise came from the engine area. It sounded like metal grinding and the motor having difficulty idling. I depressed the brake to attempt to put the vehicle in drive and the yellow "!" indicator light came on with a message on the on board display (i cant remember what it said). I shut the vehicle down and after a few seconds hit the button again..... same thing. This time, the idling and "grinding-like" noise went away and then the car seemed 100% normal. I noticed there was a little bit of blue smoke coming out of the exhaust while it was idling/grinding roughly.
Perhaps not the smartest thing to do, but I left for work and the vehicle has worked 100% fine since the mishap yesterday morning. In total, I have driven about 150 miles since the issue with no problems.
I read a sticky post concerning a service bulletin for engine knocking at start-up but what i heard seemed to be more than knocking and it was well above 40 degrees.
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I have the IV, with navigation. My most recent sound is from the cd player. If you open up the navigation (like your going to load a cd) it's even louder. It sounds like like a computer hard drive searching and writing data, and goes on for about 10 minutes (or longer, my patience doesn't last too long). Maybe the navigation system is uploading a database or something. No CD's vs. loading a cd do not make a difference, and the audio system is off. Weird. Only way to hear it is on a quiet night, in EV mode. Reminds me of when I used to reformat a hard drive on my old computer. I'll continue to listen for it when I pull up to a stoplight.
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Brought mine to the dealership they can't find the knocking noise. I asked the technician to Test drove it but still can't find the problem. Technician on the passenger side and we test drove it. He was able to hear it, but can't confirm if its coming from the pads or rotors. Its pretty anoying when driving at night when the roads are quiet. You can hear it even with windows close.
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The topic is as much as I can say to what my car's problem is.
2010 Prius II with 50k miles now.
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Just recently my Prius has been making a clicking noise when turning right and braking at the same time. It only happens during a right while braking and not while stopping straight or left. I only have 27K miles on it. I'm not due for an oil change for a couple thousand miles and was going to wait until then to mention it to the dealer.
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The noise is not the usual vibrate noise that happens.
The Noise: As I brake harder to the final stop I hear a grind/bump noise. It is hard to describe. It is abrupt and quick. I don't believe it affects the braking just annoying and doesnt sound normal.
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I had my Prius for almost 4 years and I'm used to all the hybrid noises: brake pump after opening the door, emission control pump hours after driving, high pitched inverter noise in EV, etc. This is different. Very faint and I only noticed it because I opened the hood right after driving. The car was completely off, but there was some small electric motor activated somewhere inside the engine. Is this electric coolant pump?
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My 2012 Elantra has been nothing but problems. Unfortunately, with me being away from home in the USA, I haven't been able to bring it to my dealership. Lately, I've noticed that the acceleration of my E sounds different with the A/C on. It's more noticeable right when I hit the throttle that the engine engages, and power goes to the wheel. The sound is a deep more drone like sound, and is only there when my A/C is on.
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I have a strange (musky) smell coming from my air vents when i turn on the air. I was told by the dealer that this could be mold growing inside the vents because I use the AC a lot. Is there any cure for this besides going to the dealer? they told me that they can partial get rid of this by spraying a chemical into the vent but they cannot guarantee that it will work.
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I noticed today that my prius with less than 5000 miles has a strange wheel squeek. It almost sounds like a warped rotor but I was really careful breaking it in. I cannot hear it at all with the windows up but with them down I hear it whenever the car is moving even when I am not braking. The strange thing is when I am moving very slowly the squeek is longer. It lasts 2-3 seconds between intervals when I am going like 1mph ot less and gradually the intervals shorten as I go faster. I could still detect it at like 30mph.
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Just a couple of months ago, I bought a 2010 RX350 CPO, and the car seems to have developed a strange issue. When I brake and come to a stop, it sounds almost like a choo-choo train coming from the back of the car. That's the best way I can describe it. A few thumps/chugs spaced apart as I am applying the brakes to come to a stop.
What this might be? Annoying that I already need to bring this in for service, but I suppose that's what I'll need to do. Would seem like a warranty issue, but either way, the dealer better take care of this without charge.
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Its been really really hot lately here in SoCal and i noticed something weird. When my car is running with the AC ON I notice this vibration/buzzing from the car. I feel it on the brake and accelerator pedals too. It doesn't happen all the time but its pretty often. I can feel it more when im stopped at a red light. Is this normal?
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I recently bought a new Elantra 2012, 2 months ago. While driving it during the first month, I heard a strange vibrating noise. I went to the dealer, since it's under warranty until 2019, and they told me that when Hyundai did their recall on their Engines, the head gasket was constructed wrong and they just had to order another head to fix it.
Fast-forward two weeks and I finally got my car back. At first, it's perfect! No noise or anything, but about a week later, yesterday, it starts to make the noise again.
For my second noise, I know it's the brakes. They squeak when I stop, even though the company I bought the car from is not allowed to sell brakes >50%, I'm assuming they did anyway. The problem I have with this is that yesterday, while on the highway, the breaks made the squealing noise regardless if I was braking or not. As long as the car was in motion, it made noise. Should I be concerned about this?
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The other morning I went out to the garage and heard a strange noise coming from the rear (underneath the 3rd row seating/storage area) of my GX460. It sounded like a pump or something running continuously. I was in the garage for 10 minutes and the noise had started before I entered the garage and continued after I left. When I went back out to the garage 3-4 hours later it had stopped so I am not certain how long it was running for. I previously owned a 2006 GX470 with the rear air suspension and this was not the sound that was coming from my new GX. The car had not been running or driven in over 8 hours and I am at a loss as to what it could be. I figured I would check here first before delving into the 700+ page owners manual to troubleshoot.
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I have a 2010 F-150 FX4 SC 4x4 5.4l w/ automatic that has 52,000 miles on the clock give or take, unmodified with the only exception of a remote oil filter relocation unit.
I bought the truck with 48,000 on it and did not have this noise, I've had it back to the dealer and their best mechanic went for a ride with me and the noise was duplicated and the mechanic had the deer in the headlight look on his face and said he'd never heard anything like that before. I've searched the net for anything similar like this but have not found anything. The noise rears it's ugly head after the truck is warmed up and it first started around 55mph and went away at 65mph , then re-emerged at 75mph and left again at 82mph.
Tried the usual test things while noise was present first loading and unloading the steering left and right, (wheel bearing) no change. Next I applied the brakes (caliper rubbing) no change. Then I tried shifting to neutral (transmission or carrier bearing) no change. I also tried shifting into and out of 4x4 (transfer case) no change. If I speed up above those speeds or slow down below them, the noise disappears.
Recently... the noise seems to be more consistent and when it's present at 80mph and you let off the throttle, the noise is present all the way down to 55mph then magically goes away. The noise to me sounds like a vacuum leak in a rubber hose or a dry spinning shaft in a bushing, sort of a low hum that sounds like it's coming anywhere from the motor to the transmission area.
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I have noticed that if I push gas pedal while turning the corner, especially if starting to go uphill, there is significant vibration felt in the gas pedal. It happens every time, as I use the same road each day, for 6 months now. I recently had a rental prius for a weeks, and had the same experience, although not as pronounced as my car.
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When I accelerate a strange noise appears to be coming from the passenger dash.
Sounds like some kind of baffle or low rumble sound it only does make the noise under acceleration.
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I bought a 2007 Prius with 198,000 miles on it. Since then I've got it up to 200,000 ish. The previous owners took very good care of it, and did not encountered any severe issues.
I recently took it in to a toyota dealership for the free inspection, and they said it was in remarkably good shape. I asked about the engine noise, and they took it for a drive and said everything sounded pretty normal, at least compared to the prius with 130,000 miles on it that they had apparently just serviced before me. I went ahead and lifted up the hood, set my phone recording at the front of the car, and started it. I let it run for a few seconds, then shut it off.
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Whenever I applies a brake and the was almost stop, I always heard a strange sound from the front passenger side. What is happened?
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My 2008 Prius with 105k miles recently started having a strange clunking noise when turning at low speed. Dealership diagnosed it as the steering shaft and yoke to replace.
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