Prius (2010-12) :: Hum Sound Coming From Rear - Delayed Acceleration
Jul 13, 2016
We took a trip from L.A. to Sedona AZ two weeks ago during the top of the heat wave. 120 degrees in Needles and 108 in Sedona for three days we were there. The car sat in the sun at the motel all three days except for one short hiking trip. Everything was fine, car ran great, and I didn't baby it, pretty much 75mph all the way there average. On the day we were leaving I went out to get prepared to leave and there was a distinct HUM coming from the rear, most probably the battery area. After a drive to the gas station and on our way out it resided, but I was concerned. Never heard this sound before.
Second thing is (twice I've noticed this), very hot days, I'm getting a lull in acceleration from stop. Whether in Normal or Power mode it's the same. (I regularly drive in Power mode). When hitting the pedal it *pauses* before it accelerates away, like when you start running out of gas in a gas vehicle.
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My 2010 Prius was hit while parked. The left side was wiped out and the whole car was pushed sideways about 2-3 inches, with the parking brake on. Toyota checked out the car and said everything looked fine. But there is this odd sounding humm coming from the rear of the car. Toyota says that is normal. Is this true?
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Happens most of the time I drive the car, and it has been doing it since I bought the car in 2012. Comes from the rear window area, no sunroof.
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I have noticed only recently a strange "ping" sound that is coming from the rear driver side wheel. The sound is exactly what two pieces of rebar sound like hitting together. The car only makes the sound once while slowing down at around 3mph and once again while accelerating at the same speed. The should can not be heard under heavy breaking however. I have jacked the car up and pushed on the wheel at 12 and 6 oclock and 3 and 9 oclock to see if it was a bad wheel bearing and it was not. It is a 2010 Subaru STI with 45000 miles. I am wondering what this could be.
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Today I noticed a sound as I was driving almost like I forgot to shut a door. I believe it is coming from the vent which is located on the right side of the back seat. I'm not sure if I ever heard this before. It's been in the 90's this week.
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Walked into my garage where my 2011 Prius (have owned for 11 months, now at ~78K miles) had been sitting for about 4-5 hours after being used for a 4 mile trip. I heard a quite battery hum from the rear for about 1-2 minutes. I've heard this before... (it is not unlike the hum you hear in the front when opening the driver's door after the car has been sitting a bit.... and I've noticed that the duration of this front hum seems to be correlated with the time since last drive?). No clue what is was...
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I purchased a 2014 3.6 SEL from a non VW dealer. They may have put regular gas in the car, I feel like it runs weird, feel a delayed throttle response and a little stutter before acceleration? or is it just me?
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I'm hearing a sound of closing something coming from the rear passenger side that. the sound comes randomly many times while driving. it doesn't come when parked. it sounds like the automatic antenna that is on 1995 Accords that closes and opens. is that the vent? also, do all prius's have that sound? is there something wrong with my prius?
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I heard a fan sound coming from the back seat after driving in traffic for 45 minutes. It was coming from the vent in the back seat. I didn't know that that vent had an electric fan. I assume it was the battery being cooled. I have never heard this sound before.
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Yesterday when I jacked up my car to switch to winter tires I hear this clicking sound, every stroke I turned the jack it will make that sound and it continues until my wheel is off the ground then it will stop. It only came from the rear 2 wheels and it happened when I jacked up the front and the back (more noticeable when jacking up the back).
I continue anyway, but today when I am driving down a parking lot (down hill turning) I hear this bumping sound from the back (sounds like bouncing basketball), it will go away if I stop but continues once I start driving again. I stop the car on flat ground and examined the tires and found nothing odd. Then when I restart the car the sound went away.
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I have a 2011 Prius, only owned it a couple of months. Today while it was idling I noticed a sucking sound coming from the gas tank. Not constant, sort of a second of suction then a second stopped, and repeat. Thought maybe the gas cap wasn't on right, opened it and closed it again, then finished driving where I was going to monitor it. The sound continued until I turned the car off. Went to try it later in the day and there was no sound, but I don't exactly trust that it's a non-problem yet.
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My 2010 prius is making a strange sound, and has been since day one.
It makes a "Clicking" sound sometimes that can be heard inside the cabin and sounds like it is coming from the center dash. It is definitely NOT a squeaky dash or door panel or anything like that. It is definitely electrical in nature. It almost sounds like a very fast clicking relay or maybe another electrical component. It is fairly high pitched (not like the inverter whine, though) and definitely clicking (maybe buzzing), not constant. It sort of sounds like a cricket. I am working on adding some audio/video to this post, should have some up today.
Here are some things I have noticed about the noise:
1. Only happens when gas pedal is depressed, not when braking or coasting.
2. When the display is in "Eco" it happens loudest and consistently when the bar is 3/4 of the way full, but it can happen (although the clicking is slower and less consistent) at 1/2 or just before the power section of the bar.
3. The car must be "warmed up" i.e. doesn't happen right away, car must be driven for 10-15 min if engine is cool.
4. Seems to be happening more/more quickly after starting the car in the hotter weather (I purchased my car in Feb.)
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I test drove a new 2012 Prius Three today and heard an odd whining sound coming from the car. Seemed to be from the front area, but I'm not sure. The salesman said it was "sonar," which was added to the latest models so that pedestrians, particularly those who are hard of hearing will know you are coming.
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It is gone at 120K. Thought it could be the tire, so rotated but noise still comes from driver side rear. Car is a daily driver but we do not live in snow belt, so cannot blame it on salt.
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We have a 2010 Prius Type 5 with about 18K miles. I've noticed at times that after having parked the car in the garage for several hours, that there is a soft "whirring" sound on the passenger side rear of the car. I'm assuming this is the battery fan, because it sounds like a fan and I can't think of anything else back there that would make a "fan"-like sound? Is there any other device back there that could make a "fan"-like sound while parked (it's cold weather here, so it's probably around 40 deg. F or less in the garage)? It makes this noise for 5-10 min. and then stops. If this is the battery fan, why would it run when the car is cold?
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Mine is 2010 gen 3 Prius. I bought it brand new and about 6,500 miles. From the beginning, I sometimes hear a grinding and rattling sound coming from the right passenger side. It is not from plastics. It is mechanical sound. But the problem is it does not happen all the time. So we were hesitant to go to dealer because they will never find it. But it got more frequent with cold weather.
Now, it does make rasping buzzing sound like a loose fan usually after I start a car in the morning and the heater is kicked in. I don't think it has something to do with fan because if I just run it itself in high speed, you cannot hear it. It is just some bad combination that makes this sound that makes you go crazy.
We are afraid that something big will happen after the warranty is over but as we expected the dealer said they do not hear the sound. The sound comes out in low accelerating and disappears in high accelerating. Now I really regret having bought Hybrid. It looks like the dealershop has no clue where to look at. I think the sound gets worse with the cold weather.
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I have noticed an odd sound when coming to a stop. It sounds like a metal ball or two rolling forward when I brake then roll back and hit something when i come to a complete stop. At first i thought it was just something rolling around in the center console but I haven't found anything. What is under the center console/drivers seat that may have something that could roll like that?
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My wife has a 13 Prius persona. There is a rattling/banging sound coming from the front end on drivers side only. Car has not been in any accident. Toyota dealer has looked at it twice. First time could not hear noise. Second, he heard it. They looked at everything and then stated that it was the ABS Brakes testing. It sounds like something is loose- that is the best way to describe the noise. It happens fairly often, too. Never happened with my 2012 Prius model two when we had it.
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I seem to be getting a creaking noise (the same sound you get when you lean on the armrest) coming from the passenger side rear. It sounds like it is coming from the hatch, but I can't quite narrow it down. The creaking noise appears when I drive slowly over bumps.
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My 2013 Prius with 25,000+ miles has developed a low “clunking” sound every time I stop and the rear of the car settles. It seems to have come on gradually and now it doesn't seem to get any worse. My dealer is unable to find the cause and there is nothing loose in the back end of the car. This isn't an awful sound but it’s very irritating and I’m embarrassed to give anyone a ride. I've driven a friend’s 2010 and it makes no noise when stopping. I’m about to go back the dealer again and attempt to get a manager to take a ride and see if he can hear the sound. The mechanic I dealt with claimed that he tried out a new car off the lot and it made the same noise – implying that I should just quit whining.
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I have a strange issue that just started happening. A whirring sound comes from the vent in the back seat I believe which sounds like escaping Air. Not like the last 2 years I've owned it. At the same time I noticed that the accelerator now takes a second to engage after I hit the pedal from a stop every time. Furthermore the engine seems to be over revving, as if engine braking. I've restarted the car a few times. I've checked all the fluid levels.
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