Prius V :: Noise Coming From Battery When Accelerate Above 20 Km/h Speed
Mar 25, 2013
Driving home last night I noticed this strange noise coming from the back seat area. not very loud, just a faint electrical motor sound emitting from the passenger rear side of the vehicle. It was strange as in i've never heard it before, I eventually narrowed it down to what I think is the battery fan. When i stopped and got out with the car still running i went to the back seat and listened under the seat and could hear the fan running.
What I thought was strange though was the noise when driving. I would only hear it at speeds above 20 km/h. When I would pull up to a stop and slowed below 20 the noise would switch off, no change in pitch, it would just stop. Then when I would accelerate above 20 the noise would "switch on again". I was only driving through an urban area at the time so never got speed up to anything faster than 50kmh. I'm used to the typical regen braking noise, inverter whine, brake popping noises, etc but this one has me a little worried as it was a new sound and it was coming from the battery area.
I do live in a very hilly area with lots of short steep hills that usually gives me full bars on the battery at least once a day. Also rush hour traffic can be horrendous around here which can bring the battery down to 2 or 3 bars sometimes.
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I was driving today with no music on and noticed something strange. I heard something "roasting" in the backseat...and looks like the noise comes from the battery vents. It sounds more like "roasting" noise than fan noise. Do you know if the battery was overheating?
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I have a 2003 Prius and replaced one of the failing batteries in my HV battery pack in hope that would fix the car. It now will not start, with the battery installed, and I have a p3030 code being thrown. Also, after sitting for a night, the main display goes black and has 'waves' in it when it does show. When I turn the switch on there's a clicking noise coming from the area around the battery.
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A few weeks ago I started to notice that the battery vent fan was turning on way more than usual. I've had the car now for five years (34K miles) and I've only heard the fan go on a handful of times, even in the hot Las Vegas summers. Once I really started to pay attention to it I noticed the noise only started once I hit about 30-35 mph and got louder as I went faster. As I slowed down, the noise would get quieter and eventually stop as the car came to a stop.
This week I caved and brought the car in to the dealer to get checked out and they did an inspection of the vent, fan and did a complete diagnostic on the hybrid system and batteries. I was worried about damage to the traction battery if the vent fan was malfunctioning or clogged. I'm out of warranty with no extended coverage so I was pretty shocked that the dealer didn't charge me a dime to do the tests. All the tests came back clean and they said all the systems tested above average and that the fan was operating normally so I shouldn't worry about it.
But the noise still persists and it's starting to drive me a little batty. It has never made this much noise before. Is there something else that could be going on that the dealer missed? Maybe the noise I'm hearing is something else and it only sounds like it's coming from that area?
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I know with the regular Prius it was accelerate briskly to speed. but just what is "briskly" ? for some it could be at the rate of zero to 60 in 3 seconds, other it would be 20 seconds. So what would be the best rate of acceleration for the C to get best mileage? how about best acceleration to speed, say 50 mph, and still get good mpg without pissing off the rest of the road?
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After one hour of freeway speed (60-80) the car slows down to a stop and red !triangle! light comes on. After coasting to the shoulder and waiting 10 minutes, car restarts. This has happened 3 times in the last two months (very frightening, but luckily it was light traffic). Dealer says 'no codes' and that there is nothing to fix!!!! What now? I can't drive a car that could lose power at any moment. Big safety issue....
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Few weeks ago my battery light coming on when I am on the highway (1999 Chevy Cavalier). It wasn't coming on until I hit around 70-75 mph. It comes on and goes off. Then, several seconds later, it comes back on and goes back off. I replaced the belt and the first day driving, it didn't come back on. The next day though, it started again.
I also replaced the valve cover gasket because it was leaking oil and I thought maybe the belt was getting some oil on it. That does not appear to be the case, unless the oil is coming from somewhere else.
I have an old style voltmeter, nothing digital, and when I place the meter on the battery, it seems to have an adequate charge, but noticed something odd when I placed it on the battery while the car was idling. The thing was showing a greater voltage while running, somewhere around 14+ volts (can't remember exact reading).
But, occasionally, the needle on the voltmeter would just drop off to 0 and then suddenly come back up to around 14 volts, maybe a bit more. I don't know if it was the voltmeter not reading it right because it does not have clamps, it is just two pin shaped ends on the red and black wires. I was holding the pins onto the battery as tight and still as possible, so if it was correct, why would the voltage drop off like that?
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I have a 2010 Prius and have been driving several for the past 7 years.Yesterday, I was driving on the Expressway at 60 mph and all of a sudden I was momentarily stuck at 60 as if I was in Cruise control which I wasn't. Gradually, I was unable to accelerate when I pressed down on the pedal, lost speed and cruised over to the side of the road as if I was out of gas which I wasn't. I shut the engine off, waited a minute and started up again. I continued on my journey without a problem. When I reached my destination I shut down the engine and re started 4 hrs later and drove home 120 miles without a problem. What is the cause of this and is it still under warranty. I have 50,000 miles on the vehicle. May I add, this is the first problem ever encountered.
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I am new to the toyota brand and the avalon. I am trying to learn as much as i can ..so my question is i want to do a tune up to my wife's car ... and I am noticing a slight wining noise coming from the car as you accelerate i remember seeing a post on that a little while back but I can't seem to find it ....
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Recently, I've noticed squeaking noise coming from some mounts whenever I accelerate from stand still, brake, or even get in the car. Car has 43k miles and is a CPO. I'm pretty sure it's the motor mounts, but a friend also mentioned subframe bushings. Should I take that to the dealer or is it wear and tear that I will have to do myself?
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It's been like that for a a while now. Every morning the hybrid battery would run down to last bar. When I start the car it would be 3/4 full and it would keep draining even though I'm on flat road.
The overall mileage has not changed much but its annoying with the battery goes to last bar and there's no electric power to accelerate.
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A few weeks ago I started noticing what I would best describe as a whining noise when I accelerate. It's not very high-pitched but definitely noticeable. It seems the more I accelerate, the higher pitched the whine becomes, and I can only hear it when I am accelerating. It is not very loud: if I have the radio or stereo on I can't hear it. I have a 2009 Corolla LE with around 122k miles on it (I drive a lot for work.) A few weeks ago I had the car in for an oil change, and was told that my battery was getting low and will need to be replaced soon, so I'm not sure if that would have anything to do with it. As far as describing the specific location of where it is coming from, the best I can say is that it's coming from somewhere under the hood...I know that's a very vague description, but I can't really pinpoint it to anywhere beyond that.
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Just recently purchased a 2013 Toyota Corolla LE. It has just under 500 miles as of today, and I was planning on changing the oil within the next week.
However, on my way home I noticed an almost ticking noise coming from the engine bay whenever I would accelerate. There wasn't a loss of power, but with the radio off and air off as well you could clearly hear it.
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when i am stopped and turn my steering wheel a lot to either left or right, and i accelerate, there is a loud thumping hammering noise coming from the front of the car.
it also happens when i am turned a lot to the left or right, and i reverse. it sounds like a hammer hitting cement. it only happens when i turn almost all the way to the left or right...?
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I bought a 2010 f150 from the company I work for.... It had a blown front diff, when I bought it, I just put a complete front diff assembly and front drive shaft on it. Thought I was golden, but when I accelerate fast there is a slipping/ snapping noise which sounds like it's coming from transfer case area... Accelerate slow and steady up to highway speeds it doesn't happen. This problem only happens in four wheel drive.... what this could be!???
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So on the 16th I had my Koni FSD kit installed with a set of Driver Gear springs (30mm drop) and used the ECS Tuning install kit for both front and rear.
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