Toyota Belt Squeal - Mystery Solved
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- เผยแพร่เมื่อ 23 เม.ย. 2016
- Stop your Toyota from squealing - its all in the turn of the key - try the turn key slow trick - The mystery of how to fix a squealing belt on a Toyota Camry, Corolla, Yaris or Echo has now been solved. Very easy to fix by yourself no tools required - save yourself the headache of bringing it in and getting taken for a ride
- ยานยนต์และพาหนะ
I'm blown away! I'm 67 years old and have worked on cars since I was around 12-13 and thought "This guy is crazy", but I decided to try it. You sir are a genius. I've been trying to figure this out for well over a year. I've checked the idelers, the tension and condition of the belt and everything was good. The noise would sometimes continue off and on for a few minutes and then go away. Your explanation makes total sense, but I don't think I would have ever come up with that as being the cause. Thank you so much, I wish I could buy you a beer.
Don't feel bad - I've been fixing cars since I was a kid - over 40 years and I' was 59 by the time I figured it out - so you're not alone
@@carquestions, the sequel eventually goes away? I have a Tundra that squeals when I first start it in the morning bu then goes away less than a mile down the road...
@JP-ps1ut I would guess the computer & alternator have time to communicate. My Highland does the same thing but if I'm patient & take the extra 5 second for the seatbelt ring to go away & no squeal. It also does it when I use the AC too fast but it's New Orleans & everyone needs AC.
YOUR THE MAN! JUST REPLACED MY 2010 TOYOTA COROLLA SPORT ALTERNATOR AND I GOT THAT NOISE. WAS ABOUT READY TO TAKE IT BACK OUT AND RETURN IT UNTIL I SAW YOUR VIDEO. IM THINKING ITS BECAUSE THE ALTERNATOR IS A AFTER MARKET ALTERNATOR. START IT SLOW AND NO NOISE AT ALL. EVEN MY WIFE WAS GIVING SHIT ABOUT IT. SHE WAS SAYING WELL YOU PUT THAT ALTERNATOR IN WRONG. 😂😂
@@dago4skinlol…. Leave it up to the wife. He really doesn’t give a solution but to slow down the key turn. I think you should make sure your replacement alternator has the correct amps as the one you’re replacing, if not more amps. I have a 2010 tundra and I could put a 130 or 150 amp alternator in. If he figured out, that the reason why it squeals is amperage not getting enough or getting to the computer faster maybe go with a high amp alternator? 🤷♂️ maybe. We would need a Toyota expert to tell us adding more amps will hurt the truck!
Mechanic charged my grandma $1000 to replace the alternator on her 06’ Yaris. 1 year later it is happening again. I taught her this and now it never screeches! Thanks so much
I'm glad it worked out for your Gran! cheers!
The belt is loose. Takes no time to adjust it. Needs less than 1 inch of slack. If it has more than that it will squeal. Simple.
Just tried this on my 2013 Corolla 😱I tried 3x’s and it worked every time! I just thinking about going to the service shop on Monday but somehow decided to search “Corolla belt noise” and god sent me to you 🙌🏾😩 Thanks so much!
Glad it helped OSB - cheers
I have spent 3 years trying to figure out why my car makes this horrible screeching sound and I’ve never been more relieved to stumble upon a TH-cam video in my life. THANK YOU. THANK YOU. THANK YOU. This makes perfect sense!
Some people have spent hundreds on procedures that don't work - this doesn't need fixing - only a second or two delay
This helped me so much, the amount of money I wasted on new belts... Actual lifesaver
That's want I want to hear !
This guy knows what he’s talking about. I have a 2010 Toyota Camry and I did a Google search trying to figure out why my belt was squealing. This was the first video I land on and luckily what he said was exactly right for me. It’s great to find someone who knows what they’re doing. I will be checking his channel anytime I have any issues with my vehicles first
I awarded myself the title Grand Master Wizard for my up coming school reunion - Thanks for the endorsement Derek - much appreciated - Cheers From Canada!
Install your belt with ignition in the on position, worked for me!
Change it to a new belt and keep it tight. It fixed the problem I had.
I have heard the squeaking on and off for 2 months. My wife thought it was the Florida heat. But one time I heard it when it was cool outside.
I tried your fix just now and it works! Thanks!!!!
Great video! Mechanical Engineer here - I think you are really close, or at least partly right on the computer causing this. Electrical systems have something called "inrush current" which is a much higher load than the steady state load. Think about it like a piping system being filled with water. Water will rush into the empty pipes faster than it will flow through the full pipes. So with that inrush, the alternator loads up and the belt slips. Now there certainly could be a computer issue on top of that making it worse, combined with old belts and improper tightening. The 1-second pause will allow the battery to fill up the "pipes" with energy and help lessen the load when the car is turned over. It really is a great video!
Thanks for the info Chug - cheers!
Great explanation from one mechanic to another. It's cool that you did the demonstration too so other people can diagnose it it's the right solution. This solution has fixed a lot of people's problems from what I can see as consensus. Thanks for all the great work! 👍 👌 👍
Thank you mr. Mechanical engineer. 😂
Okay how do I fix it?
Not usually a video commenter, but you saved a trip to the mechanic. I tried the "slow" method and it has worked every time, no more annoying screeching sound. Thank you so much for posting this video!!
That's so cool to hear. I can't wait to try it out tomorrow.
Excellent! We have a 2005 Highlander and the squeal has been occurring for over a year. Usually first start of the day. Often, after car has been running for a while and is warmed up, the squeal would dissipate or go away. But would always return the next day. Mechanic tried to fix it, but the sound came back after a short time. So glad I watched this video and avoided the cost/hassle of another trip to the repair shop. Thanks very much!!
Love it ! - cheers Doug!
I am having this issue for 4 months now with my 04 Highlander. I thought the belt was fairly new but I will try this in the a.m.
Came across this video when I was trying to figure out the squeaking issue that my 1990 Toyota Corolla has been doing & it helped a WHOLE LOT!!! It also kept me from sending it back to the shop. I had my harmonic balancer replaced almost 6 months ago, so of course I had to buy new belts. Ever since then I've been having a problem with a small squeaking noise & in the past 2 weeks or so it's gotten worst. I tried belt grease, etc but it would only help for a little while. So, thanks for this very helpful video!! 😊
Anytime Tay - cheers! - let me know how it works out for you
Holy Crap. My Yaris has done this for years and i have gotten the belt changed numerous times and taken it back to be tightened. I've unfairly judged the mechanic for not getting the belt tight enough. I've woken up my neighborhood and annoyed my kids. Now I can take off without alerting my wife and kids in the morning. thank you!
Did it work for you?
@@carquestions it did! I still need to get a new belt since all the squealing caused my belt to prematurely wear. It still squeals but not at the initial start.
@@ryanr6656 Excellent result - Cheers from Canada Ryan
@@carquestions Cheers! And I Love my Yaris
@@ryanr6656 ☑
I have this screeching noise problem with my car now..Thank you for posting this video Sir.
Hope it helps Kim!
You just fixed my 2000 Landcruiser 294,000 miles and she’s still going! Thank you 🤗
Great to hear K - thanks for the info for other LC owners - Cheers from Canada!
Mr Carquestions is spot ON! I have only 68,000 miles on my 10 year old Yaris, car is perfect but had a lil squeal at start-up. New belt, same thing. Now I stay at "on" for an extra second before turning the key all the way to "start" and NO squeal!. I also think his theory of why this works is exactly true too. Makes perfect sense.
Glad it worked
Nice find. I always thought it was a Yaris thing as I've seen other Yaris on the road with the same exact issue.
Other Toyota's do it as well
I cannot thank you more! :) Now I don't have to look down and apologize repeatedly to people around me from inside my car whenever I had to blast their ears with the awful screeching sound!
I take it this worked for you then?
Alice same here hahaha I would be embarassed but Im glad I found the issue
carquestions
How do you fix it though?
I feel your pain!!! I had a police officer pull around at the mall because it was so loud! 🤦🏻♀️🤦🏻♀️🤦🏻♀️
@@Billie_Marie_ God! Now I'm more worried about getting pulled over because of the noise. It only happens sometimes when I turn and sometimes when I turn it on.
Dudes facial expressions when he is demonstrating 😂😂😂
You can tell he’s fed up with that lol
How the f ya gaann
Haha 😂
🤣🤣🤣it’s the face of, cmon you should know this sound lmao
Right!!!!!
I was searching on TH-cam for a solution to this problem. I have just bought one used, and after watching this video I literally ran to the car to try it and see if that was the trick. It was, thank you very much for the video.
No problem Seth - weird eh?
That is the darnedest thing I have ever seen...but it works. I have had the same problem on a 2005 Toyota Sienna for years now. After trying everything possible I finally just gave up. Went out and tried the "slow" key turn this morning and it worked like a charm. I did notice that once you turn the key over to the "On" position that as soon as the gas gauge initiates (shows the level of gas in vehicle) that it is good to go. Apparently there is some type of relay issue with the computer. No need to turn the key slow (at least in my case) just turn the key to "On" and watch for the gas gauge to show the gas level and you are good to start. Only takes the gas gage a second to engage. Great post.
Glad it helped
Thanks for this video. It will save a lot of people from spending unnecessary funds and give them peace of mind that it is not a serious issue. One has to wonder why Toyota has not addressed this problem or are they simply "turning a blind eye"?
+Edward Mizzi Hard to say what the answer is but one thing for sure is that Toyota knows about it
Thanks for this video!! saved me money and time.
Anytime
That’s toyota for ya
Wow it works. Thanks
Wow Mark, this is amazing!
It totally worked for me!
I have a 2005 Toyota Echo and it's been super embarrassing for months.
I kept getting told it was the belt and it wasnt and then a pulley. I was trying to find a video after seeing some belt lubricant in our shed and found your video! Thank you soooo much and I've subscribed to your channel :):)
Anytime Jess cheers
OMG i have a 2005 Echo! How many clicks you have on it? Love my Toyota
Glad to hear my car isn't the only one, cept when my AC is on its worse
Thanks for the video, man! I'm from Pakistan. I bought a brand new Corolla. Has only 7000 miles on the dial and was facing a similar problem. Took it to the local Toyota 3S dealership to have the problem fixed to no avail. And then I stumbled upon your video and voila! The problem's gone! Can't thank you enough!
Glad to help Ali
Thanks again! :)
My car (2007 toyota yaris) has this problem all the time, and I've had the belt tightened and replaced countless times. I wish I knew this prior! I thought I was just rough on the belts!
Also, just for some weird side effect, if I have my AC running at start up, and I turn the AC off after starting my car, the squealing stops that way as well. Thank you for posting this!
I'm glad you mentioned the AC because I pause to start my 07 Highlander like he said & no squeal but if I turn on the AC right away the belt will squeal. Who knew replacing an alternator & belts would CAUSE a problem.
Still love my Toyotas.
Lol I can't believe this,I've struggled with my Toyota Tundra for 10 years to find this issue and I can't find the issue,. I will try this to see if it's going to make a difference. Thanks for posting this video. Holy hell!
Tighten the belt first then if it still squeals - try slow turning
Thanks for this video! This is fantastic and now you've decreased so much stress I was having to deal with taking it to the dealer/mechanic to get ripped of! :)
No problem Charlie - glad to help
This is a great video. This week I had the three engine belts changed on my 03 Toyota Highlander, as after 68000 miles, it was about time. No squeal when I picked it up at the shop. On letting it sit in the garage for a day, went out and had the squealing on startup. Went to two stores and it was OK, with no squealing. This morning went out and tested it, and squeal was back. Thought I would have to take it back to the shop, but figured I'd look to my new BFF, the internet, first, as any problem you have, someone else probably has had it too. Just went out and started it, using the slow turn method, and voila, no squeal. This means no trip back to the shop. Thank you so much!
Anytime Rich - Cheers from Canada!
Was this a V6 engine? Thanks
I was skeptical , but it worked ! Thank you for the great advice. I thought I was going to just live with it. It was so easy.
Way to go Kim - cheers!
Dude.
this fixed my neighbor's 07 Highlander. thank you so much for sharing.
Works on lots of Toyotas - cheers!
Thank you! I just got a new belt on my 09 Corolla and had been dealing with the squealing for a couple weeks. Then I tried slowly turning on the ignition and no more squealing!
Good to hear - cheers!
@@carquestions This! The squeal started after my Dad had the timing belt changed on his 2012 Corolla. I asked his mechanic about it and he didn't know what was causing it. I was about to call the local Toyota dealership to see if they knew what was causing it but decided to Google the issue first. I saw your video and tried your suggestion and it works! Thank you so much!
THANK YOU THIS WORKED! On my 09 Corolla WTF JAPAN!?!?! I been waking everyone up forever and couldn't figure it out what a stress- Thanks for this!
BRILLIANT! My son's Yaris had this very problem, and your solution worked perfectly (after several mechanics offered ridiculous solutions, like disconnecting the alternator). Best part: I am the hero (thanks to your video and its simple, quick, and completely inexpensive explanation). I told him I figured out myself, just to get some much needed dad-cred. I'll fess up later, when the cred wears off.
Well done knuck! - I've done the same thing many times - Sam Walton did the same thing building Walmart. Cheers from Canada!
Confirmed success on my '09 Yaris.
i like that you actually demonstrated the sounds. im trying to diagnose mine but i realise i was just holding down to long on it. lol
Let me know how you make out - Cheers!
My '07 Yaris does this EXACTLY. If I stop at 'run' for a moment, let the dash light up, then proceed to start, NO noise! Thank you soooo much for this. I saw this vid in '16 and have been doing it this way for two years, same belt, no problems!
Excellent - cheers!
Thank you sir you fixed my problem with my 2010 Toyota Corolla. I though it was a belt problem. So turning the key slowly helped me with this issue
After getting my belt replaced twice... all I had to do was slow down my key turn... excuse me while I go throw my head through a brick wall.
Disturbed A7xLP Atta Boy
not required -
🤯 had my belt changed and it continued. Definitely trying this 😂
@@progrockrules Right?! Who would've known that it would be such a common Toyota problem.
Well sometimes, the solution really is easier than you can think it to be. How exciting.
Thank you so much for this! This worked on my 2016 yaris. I was scratching my head as my belt is new and nothing wrong with the pulleys.
Ha. This was my problem as well on a 06 Sienna. Thank you for figuring this out. Saved me a lot of time and effort and probably money.
Thats good info - thanks Wes
I work at Toyota customer service. You are exactly right, it is a computer hardware problem.
I've mostly had Tundras and Highlanders with this issue, but I wondnt be surprised if other models are having the same issue.
I noticed they are non Japanese assembled models too. We have major issues with quality consistency between factories.
Thanks for the info 88 - but every factory has quality consistency issues no matter the maker and Toyota has less than others - tough to see when you spend a lifetime on one chair and Toyota's idea of a quality issue has a much broader definition than you'll find at FCA for instance
88pie88
Thank u, thank u, thank u!!
2007 Tundra with this lovely squeal...Is this computer hardware a diy repair?
Adjust the belt tight - if it still squeals then turn the key slowly
Yup, my Tundra has this problem as well. I noticed it happens sometimes, and sometimes it doesnt. Now I know why lol.
If all Toyotas were like mine, you'd starve. This quirk is the only problem I've had with the car. Best car I ever owned.
Oh my God!! I’m about to cry! 😨😥😭. Thank you for this 🙏🏾
Lol
Amazing!
Still have my 07 Highlander bought new 14 years ago this month with only 92,000 on it. Replaced the alternator & belts 6 months ago & the squealing started on & off about 3 months ago. Tried your solution & it worked. Thanks from New Orleans. Still love my little SUV. Great car.
Gerry - Toyota's aren't perfect - but pretty close - well done - Cheers! and thanks for the info.
This also worked on my son's (new to him) 2004 Toyota Avalon. Thank you so much for this video, because my head was also banging a brick wall.
Good to know for other owners - thanks!
I’ve been doing this for a while with my ‘09 Yaris and it’s been doing fine. But since it’s been getting colder & I have had the car for a while, it’s been squealing VERY loudly even with the slow turn! I think it’s time to get my belt tightened or changed 😢 but I’m definitely going to continue turning the key slowly! Glad to know I’m not the only one!
Yes Vanessa 100 percent correct - change belt and tighten if it's over 5 years old and keep turning slowly - Cheers from Canada!
@@carquestions thanks!
It makes 100% sense! I noticed that once I gunned the engine the squealing stops. I have almost 90,000 miles on my 2007 Yaris. so I really do need to change the drive belt.
If after the belt change it still does it - just turn the key a little slower
Did my belts on my 2002 Yars at 82k and in the service book it say's much earlier than that.
Thank you so much!!! You saved me, I was so sick of hearing this noise from my 2005 Toyota Highlander, this worked perfectly every time! I’m so glad I didn’t spend money trying to fix it. Thank you thank you thank you!
Very glad to hear that Nicole - loads of people spend hundreds trying to fix it - cheers from Canada!
@@carquestions I am also in Canada! Cheers!
Have to try this on my 05 Highlander V6
I have a 2012 Corolla S and this trick by starting it slow works like a charm. Thanks for the tip now I don't have to be embarrassed everything I start my car.
Thanks for the info CG - good to know - Cheers!
Don't have this problem, but love to see mechanics sharing solutions to car problems. Subscribed!
Thanks Alex
Worked for me with my 2007 Yaris!
Good to hear
Omg...I purchased my 17yr old son a 2006 Yaris and it does EXACTLY the same thing, it's so embarrassing! Trying to make him a responsible young adult, he has to pay for half of all the car repairs. Now I feel "some kinda way" because we spent so much money getting this car looked at and this is all we had to do??? I can't wait till he gets home from work today so we can try it! Thank you, thank you, thank you! 🙏
@@outenml Did it work Mikel? I can't wait to try it on mine tomorrow morning.
2000 Solara here. Thank you for sharing your knowledge! Slow key turn has worked every time.
Great to hear Mike - Cheers from Canada!
WOW thank you so much for your video - that is exactly what I have going on. Great investigative work.
Worked on my 2003 Highlander. Good video and to the point. Thank you so much for this!
Works on a number of Toyotas - thanks
I having the same issue on my 06 v6 3.3L highlander but my noise is very low, not as close than the one in the video but I can just tell it’s squeaking. I will try his technique when I get home today. Mine squeak for about 1s but again very very low sound
@@rolandroland1485 Did it work?
@@BriansRCStuff not really, it disappeared this summer and it’s kinda back again now that it’s getting colder! Recently did the belt, water pump and steering pump, the squeaky noise is 70% less noticeable but I can still hear a lil bit!
The noise pretty much disappears after the car is warmed 🤦🏿♂️
I am in NY btw
Outstanding, worked on my 2007 Solara...thanks
Anytime Randy
Hi from the UK, my son had this almost unbearable squeak, we just tried this, not thinking for a second that it could work. And it DOES.
Thank you!
Anytime - Cheers from Canada!
My Toyota Sienna has what I believed was a squeaky alternator belt. This video sound EXACTLY like it. I popped the hood and took a look and the belt (as well as the alternator) are so clean and new looking, you could eat off of them. Then I felt the tension and there was hardly any slack. It didn't feel too tight, nor did it have that +1/4" slack that you don't want. I also noticed the squeal is much more pronounced when my van has been sitting in a hot parking lot all day, and then I start it up. If I let it run for a minute, it stops like magic. Very strange. I'm still going to get the belt checked, but I think I might try turning the key slowly to see if I can avoid that embarrassing racket until I take it in. Thanks for the tip!
You just saved me a trip to the dealership this morning.
Good - you would have been charged for unnecessary work
You're a genius mate.
Can't thank you enough works perfectly with my 2009 yaris sedan. I was still experiencing squealing after a belt replacement and this solved the issue!
Glad you missed out on all that other unnecessary work - like replacing idler pulley, alternator etc - Cheers from Canada Barmy!
as others are saying, Thank you. This issue is happening in my 2004 Toyota Sienna too, it's crazy. mine goes from a loud squeal to absolutely nothing turning the key slowly. Thank you again.
Love it - cheers!
This was exactly my problem on my 03 Toyota Highlander, I just tried it and she purrs like a kitten at startup now.
I'll add that the squealing seemed to be less loud during colder months and louder in the summer, but I don't know why that would be since I've been in the habit of making sure lights, AC/Heat is off before turning it over. Either way, thanks for the video!
Glad to help Tony
Maybe because your windows are down in the summer?
My 2008 was doing this, the belt was relatively new but just needed a little more tension.
Thats normal - you only need this trick when all is tight and new and it still squeals
Can’t thank you enough for this video! I have an ‘04 Highlander that just started doing this to me. Scared the crap out of me. Did what you suggested and sure enough that squealing sound was gone. That’s incredibly strange.
Yes Chris - strange is how I'd describe it as well - Cheers from Canada!
Hi carquestions
Well as a result myself with many years as a mechanic (not tech) i first noticed this in the wifes 2007 yaris belt was good pump good bearing was not making the usual noise and when i tried this after adjusting the belt as i know toyota are touchy on the tension so anyway i tried doing this no more noise but one must not forget to do this as you say in the video i find it has completely stopped this noise thanks and iam working with toyota on this issue to see where it will go i will update when i can thanks again for this excellent video ~Dave
That is a crazy problem for sure!
but true!
I had the belt changed and had no issues for about 2 weeks, not sure if I should pay a visit to the mechanic to have this tightened again... I just tried this and it worked every time, mine is a Yaris 2009
Adolfo - skip the mechanic - if it works you have the problem and turning slowly is the only fix
Samething my 2010 Toyota Corolla s makes now I know what it is!! Dealer told me you need a new flywheel, I said no way, kept saying $1500 dollars to fix. I'll try starting it slower next time.. thanks for sharing!!!
Flywheel? sounds like a totally different problem or one whacked out dealer
This is amazing! We have old Sienna that we fixed up for our kids. So most everything has been changed in the engine to make it safe for them but now this sound which randomly comes on. Will try this method! Thanks again.
Great -DU5 let me know how you make out - Cheers from Canada!
this is amazing!
Never seen anything like this before
Thank you. I've had my Yaris for almost 8 years now, and it JUST started doing this. The dealership did suggest changing my belt, and afterwards it kept squealing and then they told me it's just a "characteristic of the engine." So basically it's not a "problem"... IT'S A FEATURE! Also, every try adjusting the serpentine belt on a Yaris? I'm not a car fanatic, but I've never seen a car you had to MANUALLY tension the belt by moving the alternator forward or back and setting the tension with a bolt? However, my 2010 Yaris DOES squeal slightly when pressing the accelerator even with the slow keyturn "fix". Does anyone have any thoughts about that, and does anyone have any hints as to how to adjust the tension belt/alternator properly?
Tighten it as much as possible - use a large screw driver for leverage - if that doesn't work - replace the belt and check the pulley bearings - may need a pulley
Worked on my 04 Highlander 138,000 miles. Was worried I was going to need new pulleys or belt. Thank you!
Glad it helped John - good to know -Cheers from Canada!
OMY THANK YOU SO MUCH. You saved me from taking my car to the mechanic. SO EXCITED ABOUT THIS 🤩
Love to hear that Paula - Cheers from Canada!
worked for my 07 yaris!
Excellent result Sabrina
Same
Was thinking, if someone can do an experiment with a volt meter hooked up and see if there's a difference in the charge that battery is getting if you start it quick vs. staring it slowly. I don't have a meter, but would be interesting and really prove the theory!
Give it a try and let me know
Thank you this solved the problem we have been listening to for ages.
Thanks Norm - cheers from Canada!
Dude, I have a yaris and have been trying to figure this out. 2 belts in 2 years , and squeling again. Computer error you are a genius.
Did it work? Good to hear - Cheers from Canada!
@@carquestions well I just watched your video today, did the slow start 2 times now and no squel, seems to work. The real test will be tommorow morning when its cold. Will try slowly and will let you know.
@@carquestions Update= Well I tried it in the morning snd sure enough ZERO squell. Tried another 3-4 times, with sitting for 3 hours, Zero squell!!!!!
i usually facepalm when my yaris starts to squeal in public. i usually tightened the belt once in a while because it squeals. i do slow ignition everytime.
oddest thing ever eh?
Fast? ok now Slow? ok now fast, ok now slow. Ok quickly ok now slow. HAHAHAHAHA
Works like a charm - glad you liked it
carquestions not going to lie, I looked st this video and it worked! It does still squeak a little but it works!
Thank you so much! I have this exact issue and this video was so perfect in explaining, subscribed 😊
Thanks Lindsay - cheers!
My wife's 05 Highlander had a loud whine/growl, thought it may be the power steering or alternator. I had replaced the alternator in 2018 and noticed a whine but figured it was just the new alternator. Last week it started to whine/growl and I pulled the sensor plug and the noise went away.
Took the alternator back to our local Napa store and he bench tested it and it did not fail but they gave me a new alternator anyways. I installed it and had the classic belt screech, thought I hadn't got the tension right, but it was OK. Saw your vid and thought what the heck, the slow turn didn't change anything but if I rev'd the engine several times the screech went away, turn off the car and back on (fast/slow turn didn't matter) the screech wasn't there, waited a few minutes and did the slow turn and the screech was back, rev and it would go away...
Pull the sensor plug off the alternator and there is no whine, screech or growl. Looking at the wiring diagram it appears one wire goes to the + terminal of the battery, another goes the dash lamp and the 3rd I'm not sure (the diagram wasn't specific to the 05 highlander).
Something electrical is definitely causing the noise, could be a bad cell in the battery although it is only a couple years old. Will need to do a load test on it to be sure. Before I pulled the alternator I plugged in my OBDII computer and it did report a high positive voltage but I think that was an old code from before, so I cleared the codes and drove the car about a mile and checked, no new codes came up. The car has been really reliable so I'm not ready to drive it off the cliff, yet.
Try this - try boosting the car with another running vehicle - if the squeal goes away I'm going to suggest getting a bigger battery since it still sounds as if the car's computer is calling for full amps at start up causing your squeal - check to see if you have the correct battery amps or that it is in top condition - the squeal is caused by a load - either a real one like low battery or a fake one the from the computer
this should be the worst thing a Toyota does. I'd take this "quirk" any day over replacing everything under the radiator cap from Garbage Motors et al...
I agree Nick - cheers!
I knew this! The same thing happens to my son's 300ZX and of course, Mr. Knowitall says he is doing nothing wrong. I actually thought I didn't hold the key in the START position as long as he does and that was the difference. I am gong to try thins right now and solve the problem once and for all (I hope)
Wee make sure the belt is tight first - hope it helps
Freakin Brilliant! My Yaris was doing the exact same thing - belts were fine - doing the exact same thing. As long as I take a few extra seconds to start the car slowly no squeal. If I just jump in and quick turn the key I get a loud squeal for a few seconds. Exact thing you said. TY so much!
Anytime Steve - glad to help - cheers from Canada!
@@carquestions Hi man, I have toyota yaris 2010, and it gives same noise whenever I start I try to start slow but also sometime it gives squeal on the road as well and then I have to turn off the ac and then it goes.
Ok im checking back in here. Tried this myself in my 07 yaris and yes this man is right and the results are repeatable easily. I hated how tight id make the belt it always felt wrong
Install your belt with the ignition in the on position, worked for me!
i never turn on my car by immediately skipping the ignition. my dad always taught me that one should always turn the key slowly. so when i switch on, i keep the ignition on for a few seconds, i used that time to bring my windows down and then i start.
Good advice for lots of cars - like my C5 - thanks JTK
Mine does it only in the AM even though it has a new serpentine belt.
Try the procedure and let me know if it works Mike
Low and behold, son of a gun, it works for me as well. I started it slowly in the AM and no noise at all. Thanks for the tip!
Mike Morales . Thank God my 1998 Camry doesn't do that my 1995 Camry has a strange ticking sound but still runs great both of this cars are practically indestructible. My 98 only has 115 thousand miles no leaks zero problems runs like new I wouldn't trade it for a 2014 Honda Ford Nissan Chevy my 98 Camry will outlast all this losers.
awake and alive that could be your starter.
Alex Sosa . That's weird I don't even remember complaining about any of my 2 Toyota Camrys making a screeching sound my 1998 Toyota Camry le is practically almost perfect and my 1995 Toyota Camry le it makes a strange ticking sound when I turn the key but it starts immediately I think the ticking sound could be one of the relays but the dam car is practically indestructible it always get me to when I want to go I'm going to retired the car in a couple of years the body is just to beat up besides my 1998 Toyota Camry le with only 116 thousand miles no leaks zero problems runs like new and looks brand new should last me 20 years I'm getting a 1999 Toyota Corolla as my back up car gas is getting too expensive.
Brilliant!! I have a Toyota Sienna and was dealing with a noisy alternator belt when starting. I had changed it not long ago and figured it was just not tight enough (which was true). But I tested 'carquestions' theory about the computer sensing the electrical load and it was the same situation as with his car. If I turned on the ignition for a couple seconds before actually advancing it to the starter position... no belt squeal. If I turned the key from off quickly to the starter position... belt squeal. It would appear that, indeed, the computer needs a second or two, after the ignition switch is turned on, to sense what electrical accessories are already in an 'on' state; i.e., it senses the load and adjusts the alternator accordingly. Whereas, bypassing that extra couple of seconds means the computer will default to a "full load" expectation and that in turn means that the alternator's structure is, in that moment, more resistant to pulley turn, thus the squeal on the belt until the pulley spin catches up to belt speed.
Thanks for the comment Mike .....cheers!
had to figure this one out for myself. but you're completely right! when i start it slow, it never squeals. But when my pops turns it on to move out the driveway, it's loud enough to wake the entire block. Great video
Ya - it's a "real thing" - Cheers from Canada!
My 2010 corolla squeals on a cold startup
Tighten belt - make sure its in good condition and follow the advice in the video
carquestions thank you for replying. It's really nice of you. The car is in Excellent condition and yes I'll crank it slow come winter and see how she does.
Hi I have a 2010 Corolla as well. How do I tighten the belt up? How much will this service cost if I take it to Toyota? How much will it cost if I have to replace the belt? I don't want another car note so I plan on having my 2010 Corolla for a very long time. Any info you have is greatly needed and appreciated
mine does this but it also does it again when I turn on my a/c.... doesn't matter what I do!!!
Could be a bad bearing - if the belt is new and tight turning slowly should do it
This is exactly the same issue I've had. Did you ever figure it out?
Thanks for this video, I have a toyota yaris 20013, and it squeals just like yours did ,when I would start my car, SO, I went, and started the car back up, just like YOU SAID, and the squeal went away. WOWWWW, I am going to post your video on my face book
Thank you for saving me money, my 2012 Carolla has the exact same issue. I noticed this noise after I changed the timing belt. I was asked to pay another $400 to replace water pump for the squealing noise to go away. When I turn it on slowly I don't hear any noise now. However I still don't know why a new belt showed up this issue while it did not have such noise for the older belt.
Answer - they removed alternator belt when they changed the timing belt and it might have slightly different properties
I had this on my 2004 Lexus es330 after I installed a new alternator and belt. I had already tightened it twice but this did the trick. Thanks so much
so after replacing alternator and belt the squeak still there?
@@phoebenichole yeah it was.
Thanks so much, I have fabricated a belt tensioner for Yaris from bolts and angle iron and it also worked, but your solution is far far easier. Your analysis is also brilliant for a very annoying issue.
Thanks Dr - Paul - cheers to you and keep on fixing!
I experienced that squeal on my Ford. I poured water on the belt to clean somehow and squealing stop for a time. Then it came back and I repeated the sequence. No squeal. I followed your advice; no squeal. Keep you posted for updates. Thanx ... from Manila :-)
Oh wow Duffy - way to go - Cheers from Canada!
@@carquestions Yahoooo! From Manila.
Cool @@duffylomuntad5613
I am subscribing right away. Thanks for this. I was about to change my belt and tensioner.🤣🤣🤣🤣
Glad I could help Emperor - Cheers from Canada!
Great video! Thank you. I changed the belt on my '06 Sienna and this started happening on every start. Belts are tightened just right. When I leave it for 2-3 seconds before starting, it won't squeal.
Recently replaced my belt and tightened it to the right amount of tension but still got this. Fast ignition causes the squeal and slow doesnt. Thanks!
I did the exact same thing. I'm going out to see if this works.
I just replaced the belt, and sometimes it still makes the squealing noise. Awesome find man.
Does turning it slowly work for you? - if nor you do need something replaced - belt pulley etc
I've had this issue for over a year on my 2015 5door hatchback. Just tested turning it over slowly and it's an improvement. 'll work on seeing about getting it in to see about a belt tightening. Thanks for the insight.
just tighten it yourself - good luck
@@carquestions I'm not a mechanically competent person, I wouldn't feel comfortable doing maintenance on something I don't understand.