Prius (2001-03) :: Brake And ABS Light Came On With Steady High-pitched Noise
Dec 2, 2014
I'm completely new to hybrids. I have a 2001 Toyota Prius with 146k miles and its been running very good until some weird things started happening during the past couple of months. When I start it up, the brake light and abs light come on along with a steady high-pitched noise and grinding noise (sounds like ice being scraped). While the lights are on and the sounds are being made, the brake becomes very soft/"spongy" and goes down to the ground without much force at all (It usually always does this when I start it up and sometimes - but not very often - when I'm driving). Sometimes it all goes off and everything is normal again after about 10 mins, sometimes all day, and sometimes only after a minute or two (It usually does it on a cold start, but sometimes even if the engine is heated up, it does it).
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I have a 2002 prius with 147612 miles on it and a problem with my braking system. When I turn on the car the ABS and Brake light turn on and there is a high pitch sound that beeps continuously. Sometimes after a while the warning lights and beeping stop only to return a little while later. I can drive the car when the warning lights are on but i have to press harder on the brakes than normal to get the car to stop and the braking system feels looser. However, when the warning lights turn off I can brake as i normally do and the system feels normal. This problem goes on intermittently as I'm driving.
I took the car to the dealership today and paid $143 for a diagnostics and was told that DTC C1251 was retrieved from the diagnostic computer. The technician told me that the ABS Motor is bad and because of that the car thinks I'm skidding so the ABS shuts off. He recommended that I get the ABS Motor ASSY ( Part #47071-47010) replaced.
Also, I read a post to resolve it by flushing the brake fluid. I checked the brake fluid level in the cylinder and it is at the max level and there aren't any leaks. Would that be an option?
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First I noticed that the parking brake light and battery light came on, which would indicate an alternator problem. I took it in, they cleaned up the engine, replaced a few hoses and said the alternator was fine. Two days later I'm driving home, I make it to my driveway and the battery dies. I was able to charge it up and dive it back to the station where they told me the alternator had burned out...
A few days later I notice my brake lights weren't working, but that was just a blown fuse.
Starting today, there is a high pitched whine when I'm driving. I can barely hear it when I'm idle, but going up to 20 or 30 it gets very loud, then kind of dies off. It definitely gets louder when I'm accelerating, vs going a steady speed. As I was driving earlier, the air bag light came on for a brief second, and I didn't think anything of it, until later tonight when I was driving home and it came on again, but this time it stayed on.
Santa Fe GLS, 135,000 miles
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So - I'm sitting at my VW dealership, hoping that their can figure out why I'm getting a high pitched, miserable squealing sound, every time I depress my brake pedal. It's metallic sounding, and with the history of brake issues I've had in owning other VW models, I just figured it was the brake pads they use. Sounds like their tech believes it is an issue with the tires??? I've got an 04 Phaeton with roughly 38K miles on it - and it's supposedly "certified"....
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Reading thru all the squealing noise posts made me want to ask about mine. I have started to notice a high pitched squeal/squeak that occurs while sitting stopped with your foot on the brake...then let off the brake and take off and get this momentary squeak that doesn't continue (at least I can't hear it). It seems to stop once you get going again.
Seems to be coming from the passenger side front. I think I started noticing this after my most recent tire rotation and balance. What the brake wear indicator sounds like or if I will get an icon on the mfi when the brakes need service. The brakes do not squeal when in use. I currently have 27000 miles.
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This has begun in the last few weeks on my '02 SF (which only has a couple of months left until it is retired )....
If I'm going anywhere between about 90-110 KM, I'll hear an odd high pitched whine. It sounds almost like microphone feedback, and I'm having a really hard time trying to find out where the sound is coming from. It is very subtle and comes and goes.
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So I've started hearing a faint high-pitched noise when I apply my brakes. It's not EVERY time I apply the brakes, and it's not nearly as loud and annoying as the noise I hear other vehicles make when they need their brakes checked, but it's noticeable.
Also: There's a (possibly related) scratching/rattling noise that just started. I can only hear it with the windows down and it's not very loud. But it happens intermittently when the vehicle is moving or when it's braking, and it makes an almost sputtering sound when I slow to a stop. It will abruptly go silent before I'm fully stopped. Sometimes it cuts in and out, similar to when you've got a short in a speaker wire and the sound cuts in and out.
I'll be getting this checked out. Is this a "drop everything and go to the mechanic" issue, do you think, or more of a "get it looked at when you can"? I should note I haven't had any problems with the car actually braking (yet). It seems to function fine other than the new noises.
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I've noticed more and more that when I am braking that I heard a high pitched whining noise. Sort of this ultrasonic type sound. It will only go away if I depress the brake pedal very firmly after being completely stopped. However every so often the firm press will not stop the noise. I hear it more in the evening on the way home than in the morning to work, though I may not be paying attention as much in the A.M. due to morning brain fog.
I don't hear it any other time. I'm worried something is wrong with my inverter.
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I have had my gen3 Prius for two and a half years and have covered 65,000 miles.
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Car suddenly started a high pitched whistling noise/metal on metal sound at highway speeds. It is intermittent, no noticeable pattern w/acceleration or braking. Similar sound at lower volume when the shock/spring is depressed (pushing down on that corner of the car). Louder at low speeds.
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About a month ago, I purchased my 2013 Prius Four. I've put on about 2,500 miles so far and recently started noticing when I start the car up, it is giving off a high pitched squeaking noise. This happens both when the car is using the electric battery and when I can feel the gas engine kick in. After about a minute or two, the noise goes away and doesn't come back.
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I took my 2008, 56k in for a new battery after my car sat outside in negative degree temps for a few days. After doing that repair, the dealer recommended a new serpentine belt. Ever since that service appointment, the car is making a high-pitched "woo-wooo" noise during acceleration. It's definitely a noise I've never heard before. I took it back to the dealer two days later; he had the service guy drive it and they both claim the noise is normal and just due to the cold. Is it the belt? Is it the cold? Am I losing my mind?
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I have had my certified 2010 Prius II, not two because it is a 2010 and 2010 used uppercase roman numerals for model designation, with 82000 miles about 3 months and sometimes when I apply the brakes I hear a high pitched whirring noise. I think the closest thing to compare it to would be a skill saw but not that loud.
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I know this noise is the Thermos Pump and it operates when I turn the car on and off. Question - is it failing - also a really annoying noise, but I'll put up with it as long as nothing's breaking.
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Recently, (luckily after the kiddo took her driving test) the ABS light constantly flashes at a steady non- patterned flash. Other than it just continues to flash, nothing seems to be out of the ordinary. Once in awhile it will not flash from a restart, but lately it's flashing more than not when restarted. I had hoped it would flash a certain pattern in order to troubleshoot the error.
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Yesterday as soon as I started my car, I noticed a high pitched whining noise. As I drove, it seemed to stop, but as I slowed down and idled, it came back. After driving a couple miles, the battery light came on, so I turned off the AC, radio, and lights and it went off again, but as I sat at stop lights it would flicker on and off again.
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When it is cold (below 30 degrees) and above about 30mph, there is a loud high pitched squeal (rather like the pitch of a squealing hearing aide)that seems to come form the front drivers side. The colder it is, the louder it is.
When I am able to take it in it is too warm to hear it. What might be causing the noise and will they be able to figure it out if it isn't making the sound?
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I don't have a Prius with a built-in bluetooth function, so I purchased the Blackberry Bluetooth Stereo Gateway that gives me audio just by plugging in my 3.5mm jack.
Unfortunately, when the car's engine revs up, I get a very high-pitched audio interference noise. This does not happen when I am connected directly into my phone.
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2005 Subaru Outback Wagon just had 60,000 mi service, O-ring replaced. running fineran out of gas on HWY. CHP arrived 2 min before AAA and insisted on pushing me to next exit, at least 5 mi. Per copper's instructions, automatic transmission in neutral, brakes off. Now there is a steady new high-pitch to the background engine noise that doesn't change with speed. What happened and do I need to take it to the shop?
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Just picked up my car from the shop last night. Had a full tune up, air filter replaced, radiator upper hose replaced (was leaking), transmission service and an oil change. When I picked up the car at night I heard that it sounded a little off when starting but I was so excited to have it back that I drove it home. Once I was on the freeway, no weird noises and it drove perfectly fine. This morning when I started it up again the sound was there again. I can only explain it as a sort of high pitched humming. I pulled away from the curb and it made more noise - I heard that sound once when I needed power steering fluid. I put the car in park and popped the hood. Power steering fluid was full. My mom suggested I restart the car so she could hear the sound. This time when I started the car it sounded fine. Typical.
I drove it to work and it drove fine and never made that noise again.
(car is a VW Passat 01')
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When I apply my brakes I hear a high pitched whine. I thought the pads needed replaced, but upon checking them there appears to be plenty of pad left. What else could this noise be? It's only when I apply the brake that I hear this, I suspect it may be something with the brake line but am not experienced enough to be sure.
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