Prius (2010-12) :: Buzzing Fan Noise Coming From Engine Bay At Startup
Aug 6, 2011
My 2010 Prius V just past the 24000km mark. I have a buzzing noise coming from the engine bay during startup. It happens when the interior fan is on. You can hear it clearly after you start the car, during the silence of the "boot up", before the ICE kicks in. I can't be sure if it continues to buzz after that because the sound of the ICE drowns it out. However, If I shut off the fan during the boot up, the buzz disappears. Finally, if I leave the fan off and start the car, there is no buzz.
During a recent oil change, a hybrid technician claims that this is normal. It used to happen infrequently but now it is consistent, so if it was normal, I should have heard it when the car was new.
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I bought my RX350 last month and sometimes I notice a strange buzzing sound coming from the car while the engine is off. This noise can come at anytime and usually hours after I have turned off my car. It's difficult to isolate where it's coming from and can last just a few minutes.
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I keep my 2015 RX 350 in the garage, and last night I noticed a humming or buzzing noise coming from it. I switched the ignition to accessory position and turned it off and the noise stopped. A search here turned up many discussions noting is is the gas evaporation leakage check valve and it is a normal function of the vehicle. My question, is this some sort of pump that is running and causing battery drain?
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2012 gti, manual, 7k miles.
I've got this tinny buzzing noise coming From the engine bay that only happens between 2800 and 3k rpm. I hear it whenever I'm cruising on the highway and shifting through gears. Also if I have the windows down you can hear it outside the car.
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OK started getting a buzzing noise coming from the engine bay on the drivers side. Cant locate it from outside the car, only when sitting in the car stationary with the engine on. Does not do it from cold, only once the engine is warm. ie drive for 30 minutes, park up, run some chores for say 20 minutes, get back in car and then drive off, when i then say stop at some lights, i hear this buzzing sound (sounds like a pump or motor). Normally goes away after about 10/15 minutes. This started happened after last vist to dealership when they replaced my electric harness and also fixed some o rings on the water pump. Wondering if it is related to the last visit or something new maybe on the air suspension or what.
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I recently noticed some kind of a faint buzzing noise coming from the engine area. basically when the radio is off I can hear some kind of a buzzing noise under medium load, it sound like a loose heat shield or something. I took it to a dealer this morning, did a test drive with the tech who also heard the noise, got a call later on telling me that the noise is normal and is present on the other Tiguans as well.
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The last two mornings I have gone into my garage and have heard a faint "buzzing" noise that seems to be coming from the rear of 2013 RX350. Given the location of the noise, my first inclination was that it was possibly the fuel pump running a cycle for some reason. But when I heard it for the second day in a row, I figured it would be wise to ask if this is normal or something I should take up with the dealer?
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What is that little noise coming from the engine bay when you unlock and open the drivers door?
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This is strange. Twice in the past week I have gone in my garage at night, and my Prius'10 is make a buzzing whirring noise. Without touching it ... it's just sitting there making a buzzing noise. This is hours after using the car.
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My dad has a 2010 prius IV. He told me the other day when he backed out of the driveway and put it in drive he experienced a clanking noise coming from the engine. He said it sounded like metal rattling around. It lasted about 30 sec. then went away. What this may be?? It hasn't happened since.
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I have a 2010 IV and after driving for an extended period and then shutting the car off I get a loud noise about a minute or a little more after shutdown. The best I can describe it is that it sounds like someone is dropping a 3 pound dead chicken from about 10 feet up onto my hood. It is consistent and is not any of the whirring or buzzing noises I normally hear. I also have a 2009 Touring and have never heard anything like this.
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I have a 2010 model and have had this issue for the past year. When I open the drivers door I get an immediate buzzzzz sound from the engine that can last 10 to 30 seconds or so. What is this???
I believe it is somehow associated with ignition issues This last winter (in Texas) I have had to push the start button sometimes several times before the engine would startup. I brought it into the dealer and left it overnight. Of course there were no problems when they started it the next day. Anyway, I have noticed a worsening of startup problems (none in the summer) along with an increase in this buzzzzz sound. Is it just my imagination?
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Hearing weird noises at car start-up from the engine?
My 13' Elantra Sedan has around 3K on it and a weird noise comes from the engine at start-up.
Sometimes it goes away quickly and sometimes it will linger for a while.
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I am experiencing a buzzing rattle coming from the left corner of the dashboard in the area near the horizontal speaker. It's not loud but it's annoying. It only happens when the car is moving. It doesnt seem to be affected by the audio system being powered on or off. The best thing I can think of to describe it the sound a Geiger counter makes, but not as loud.
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When I'm driving with Windows up and audio off I can hear this hollow road noise, static buzzing sound from my back right side.
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Our "new" 2010 RX is our second Lexus with fobs & push-button start. When I push the start button to start the engine, I first hear a one-second "BZZT" noise from behind the instrument cluster, then the engine starts. This happens every time I start the engine, but I've never heard a noise like that in our 2008 ES350. So I wonder if this is normal? Hearing this odd buzz noise just before your engine fires up?
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On start up I constantly get a almost dial up Internet connection sounding noise coming from my engine (2.5)? I've been told that it could be from the cold weather ,,,,
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I once experienced the noisy engine start up.. It sounded like the engine was trying to run backwards or severe pre-ignition.
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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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Initially thought that this was related to some water in the tank, since it started when the gas dropped to 1 bar (already put some stuff HEET when put the whole tank, did 60miles so far). ODB throws out multiple cylinder misfire (codes 300, 301, 302, 303 etc). It lasts up to 3 seconds. Sometimes the check engine pops up sometimes it doesn't. there was absolutely no problem under load. does it seem like a fairly common problem ? Intake manifold clogged ?
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I have driven 25,xxx miles on my 2010 Prius. Three times during the last thousand miles I have experienced very loud and scary engine noises during start up. The car had sat for at least ten hours outside in 20-30 degree weather.
I took the car into the dealership for an oil change and my service advisor told me that Toyota was aware of the problem and the noise was not coming from the engine- but a device that mates the ICE with the electric engine. He told me that although it was a loud and dangerous sounding noise, it was not something that would harm my motor. I asked that the noise be logged into my service record.
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