Why do you hear grinding or rubbing brake noise in an electric vehicle?
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- Опубліковано 28 вер 2024
- In this video I attempt to explain why you can hear more brake noise in an electric vehicle. Often new owners of EVs are worried by the new sound of grinding or rubbing brakes and assume there is a problem with their new vehicle. It is normal and simply due to lack of use of the brakes and is always worse if the car hasn't been used for a while.
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Just had massive rain for days and unable to use the car for two days. Went to use it and found the grinding on noise on the breaks. Panic alleviated! This really made sense. Thanks
Excellent explanation of this issue
Thank you.
You can always use the commercial drivers remedy, 'Turn the radio up louder'.
I drive trams for a living, they use regen breaking, so each morning they activate the disk brakes for the first 3 times you break.
They could easily run a programme like that on these cars.
What’s the clicking noise that comes with braking on Hyundai Ioniq hev?
In my Toyota Auris Hybrid i sometimes put the car in neutral and then just brake at a long highway exit.
Brilliant! I’ll make a point of using 0 regen and using my breaks every now and then, especially before my MOT. Thanks
I am getting this on my Lexus hybrid at low speed, but only/mostly when turning left and never while braking. Any clue ? 😮
Wow. There is a lot of rubbish info on the internet about the matter and this just wipes them out. Excellent review of the issue. Tnx.
Thank you.
Hi Go Green - we've had our 5 year old Ionic serviced now it is getting a film of brake dust over the wheels where it never did before. One wheel front driver is so bad that there is a thick coat streamed back up over the door. Prior to this service (Hyundai dealership Bartons Capalaba) the car had still 10mm on both front pads ie. factory depth still even after 5 years use. Only one of the back ones down by 1mm since factory in 5 years. Then a week after servicing - it's tearing through brake pads with minimal driving as well. Any ideas on what they have done?
It sounds like you've got a stuck piston. I wouldn't use a main dealer for brake servicing.
Great info, just bought a used Ioniq HEV and was concerned about this. Is there an easy way to clean the disks myself? I live in a climate where we seasonally change tires in the Fall and Spring (add/remove winters). Would it be worth it to clean the disks myself when I change the tires twice a year anyway? Best practices?
Drive to 50mph or more and brake hard. Job done.
Hi Matt, another well-described solution: however, the brakes on our Zoe are quite jerky, we can’t slow down easily without being flung against the seatbelts. We’ll try and test the brakes out more harshly as you suggest, on our local bypass, see if that works, - or have you any other suggestions? Great videos, keep ‘em coming!
Brakes in Zoe's are really snatchy when wet. We had two for 2+ years and it still catches you out when it rains. I guess it is due to the compound in the Renault pads. Never wore the pads out so there was no need to try some other brand in them.
Go Green Autos Ltd. This is all the time, in the dry and the wet! We’ll try the harsh braking....👍🏻
Motorcycles commonly use stainless steel disks (mostly for cosmetic reasons) I wonder if this would be worthwhile to address this corrosion? From a quick search, it looks like "metal spray" may be a viable approach to have a stainless steel surface.
Matt another great video very informative. Keep them coming. 👍
Thanks
So the brakes are rubbing then and causing friction? I tried to slam my brakes and barely use my regen to avoid the grinding sounds. Have a Tesla P3 and it sounds like a junker going down the street.
Brilliant description thanks for this
Hi , recently purchased Kona Hybrid which currently only getting used couple time a week , been raining couple of days , yesterday went out and noticed when braking at low speed or gently there was a scraping / grinding noise, which you suggest is normal , bit concerned as had car 2 months and it just started happening . Car only done 6000 miles
Iron brakes rust when yet. So completely normal until the rust is worn away. Brake a few times at high speed and the pads will clean the brake discs and they will be noise free (until its parked in the rain again).
To clean the back brakes you need to brake heavily when carrying a couple of passengers or weight in the boot.
Thank you for this explanation. At low speeds I am getting this noise on my Lexus hybrid and the dealer told me it was due to the regen braking but I didn’t believe them. Your explanation makes perfect sense why I am hearing this noise coupled with the fact that I don’t drive my car much.
Yes, nothing to do with regen braking. Regen brake is all done by the electric motor and not the brakes.
Thanks for the video. Would this also be true for driving a hybrid vehicle like a Prius?
Yes, but depending on they're driven. Hybrids to have regen braking (i.e. motor braking), so if driven gently and very efficiently, the friction brakes will have much less use. But generally, most hybrids will still have a reasonable amount of brake use still. EVs with strong regen and one pedal driving, will have almost zero brake wear (if driven well), so the discs and pads do tend to stay corroded up.
Hey, I'm working on a paper about cars and i have a question about breaking in EVs
You have the regen braking when you aren't pushing down the gas pedal, but when you push down on the braking pedal do you use the electro motor in any way to slow down or does that go straight to the friction brakes?
Pushing the brake pedal is obviously friction brakes, but at the same time the regen on the motor is turned to the max to assist.
@@GoGreenAutos thanks so much
Thanks a lottttt
Sent my ioniq to dealer with the handbrake not releasing they fitted alternative release springs this was within the first 2 months of ownership
As you say noisey but not locking on todate
That's interesting. Tight rear brake pads is a common issue on the Ioniq due to the electric handbrake. I wonder if they've modified the release springs then. Do you have a part number on your invoice? That would be a great help if you did, as I will order some in and see how they are different.
@@GoGreenAutos Hi Matt sorry for this delayed reply as I've been unwell for the last 20 days
Referring to the rear brake springs on a 2017 Hyundai Electric 28kw ioniq
After a confirmed inspection
The following was fitted
Description
Spring- Pad Return Kit
Part NO
58288G7300QQH
I don't know what it looks like or where it fits
Vehicle mileage 773 now at 20.000 and no recurring fault only with a rusty disc if left unused for a few days which I accept
I've had various electric window switches replaced under warranty just wondering if its a quality issue and will they all fail on me once the 5 year warranty ends
@@michaelbruton3537 Thanks for the info. This is very useful. The Ioniq 28kWh rear brake return spring is item 5288G2300 and looks like this www.hyundaipartspro.com/p/Hyundai__/Disc-Brake-Spring/65920405/58288G2300.html. Yours now has www.hyundaipartspro.com/p/Hyundai__/Disc-Brake-Spring/70105790/58288G7300.html which is completely different and from the picture doesn't look as it will fit. But I may order some in and see if they do a better job as binding rear pads is a common issue on the Ioniq.
As for window switches, we've not had a single issue with our own 2017 Ioniq yet and its done over 90k miles now, see ua-cam.com/video/lE7QgYLN3Dc/v-deo.html
@@GoGreenAutos Hi Matt many thanks for your reply
I don't know if the parts were ever fitted by Motorfair Hyundai ,Birmingham
I had an official Hyundai recall
For Power Control Unit (EPCU) inspection which was passed off okay
I seemed to have been fobbed off by the dealer over the fact when I had 4 new tyres fitted I also had a 4 wheel alignment done
With some toe settings adjusted the print out showed the right front caster angle at fault at 4°00
Stating in red values are not within specification
13 out of 14 measurements correct on the vehicles geometry
@@michaelbruton3537 I've ordered some new rear brake pad springs, same part no. as fitted to yours and they are the same as the originals. However, I'm going to fit them to see if they make any difference as maybe the originals loose their tension over time. A video will be coming on this subject soon.
I bought a second hand ev, that lately hadn't Seen much use and the brakefluid had not been changed. That combined with the less use of the brakes meant that sludge had built Up just behind the caliper seal, so when brake pressure was applied, the seal got stuck in the "out" position and made the pads drag slightly. This has not happened to me in a regular car where the more frequent use and heating of the caliper prevents that! A way to mediate IT is to use phenolic brake pistons, or maybe upgrade to DOT 5 brake fluid, which Better suites EVs with its hydrophobic properties, that won't absorb moisture and cause corrosion in brakes not nused much. NB. The ev is half way through its second set of pads in 18 years! There is No Edge on the original discs yet!
18 years? Which one do you have?!
@@davidrmcmahon It's a Fiat 600 elettra, made from 1997-2002 for visiting nurses and municipal police in Rome. Only 758 ever produced. A lot of them ended in a field, where they were sold off for pennies at an auction. I conveted it to Li-ion, so It now has the performance like the iMiev with 120mi range. City driving is only 160Wh/mile, so half the cost to charge, and it looks exacty like the original gasoline version, so keeping my affinity for old cars, though having moved on to modern times.
@@Tore_Lund Great job mate!
@@Tore_Lund Wow. I thought it was a misstype. That's cool