2019 Kona EV Motor Noise Issue

Mdsweb said:
I don't think there is an official TSB yet - but after doing some more research it boils down to 2 possible fixes/solutions:

1. Drive shaft assembly rotation by 180 degrees (I've attached an actual work order of a Kona driver who claimed it fixed his issue)
2. Complete Traction Motor Assembly replacement (Electric motor, drive gear & motor assembly) 36500-0E701 or 36500-0E702 (newest model)
https://www.hyundaioempartsdirect.com/oem-parts/hyundai-motor-assembly-365000e702?c=cT0zNjUwMC0wRTcwMQ==

I'm not sure if I'm willing to try option 1 first - with limited success if done properly - and I'm worried about existing damage to the assembly - as any noise coming out of there must be wearing something down and doing some harm.

Any thoughts or experience out there with these fixes?
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I looked up this part for the 2019 and it says that the 701 and 702 versions "don't fit" that model year. But every replacement on this thread has been the 702 model including 2019s. Maybe the parts website is incorrect? I did notice that the 702, while newer, is 2 or 3 thousand dollars LESS than the recommended 2019 part...the ones that have failed. Hmm.
 
Wildeyed said:
Well I'm a happy dude.

My garage replaced my battery today and test drove it re: the noisy drive train.

They are going to replace everything. Motor, reduction gear, everything. Painless, fast, no dithering. Couldn't have gone better.

Parts are on back order (of course) but are ordered and it will be done. I am free to drive my car in the meantime.

My one suggestion, if I can pass anything along to others experiencing noise issues: go to a garage with a history of having dealt with it before and having actually replaced the motor etc.. It smoothed things out so much to not have been the first. I've had more grief and arguments over oil changes and tire rotation than I had over replacing an entire drive train! Crazy world. But I'm not complaining... for once. ;)
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That's great, after my traction motor assembly was replaced the difference is night and day better. The replacement only took about 5 hours vs 2 days to replace the reduction gear. I did have to wait 3 months for the parts to arrive though.
 
Wildeyed said:
Well I'm a happy dude.

My garage replaced my battery today and test drove it re: the noisy drive train.

They are going to replace everything. Motor, reduction gear, everything. Painless, fast, no dithering. Couldn't have gone better.

Parts are on back order (of course) but are ordered and it will be done. I am free to drive my car in the meantime.

My one suggestion, if I can pass anything along to others experiencing noise issues: go to a garage with a history of having dealt with it before and having actually replaced the motor etc.. It smoothed things out so much to not have been the first. I've had more grief and arguments over oil changes and tire rotation than I had over replacing an entire drive train! Crazy world. But I'm not complaining... for once. ;)
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Wow that’s great to hear! You’re exactly right - I think if they’ve done a replacement the stress level goes way down trying to explain problems- as they get more comfortable working with EVs.

Looks like someone else may have paved the way for you at your dealership lol.

From my experience it may take a couple of months to get the parts in but as long as your driving the car it’s not a big deal.

Good luck.


Sent from my iPhone using Inside EVs
 
I'd mentioned before about how constant exposure to the motor sounds may have made me a bit deaf to the increasing noise. I got a loaner gas Kona for a two hour drive from the dealer and back. This is the first different car I've driven in two years. I immediately noticed how quiet the gas Kona seemed (not a good sign). When I picked up my car today and drove it I could not even comprehend the volume of the racket. It was astonishing how I failed to notice it before.
 
Kathryne said:
I had my traction motor replaced last week. All back to normal! It did take about four months to get the parts though.
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That's good to hear. I figured three to four months wait would be likely for mine. Fingers crossed, breath definitely not holding.
 
Update after changing the electric motor

There is a little bit silencer but the mettalic noise when braking under 15km/h it's still there :(
 
Bogdans19 said:
Update after changing the electric motor

There is a little bit silencer but the mettalic noise when braking under 15km/h it's still there :(
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Do you have any idea as to whether the metallic sound is related to brakes or regen? Because if it's brakes then some servicing or aggressive braking might scour the pads and clean them, eliminating the metallic noises.
 
Got the call! Parts are in and I've got an appointment for motor unit and drive unit replacement on May 25th. I'm told it should be a one day overnight stay and I'll be getting a loaner. Back in February I guessed parts would arrive around May 24th long weekend. Expectations met. Here's hoping it works! By the way, my Service Tech mentioned that there IS an official bulletin about the drive unit noises from Hyundai with recommended fixes. So any dealership should have guidance available to them should your car manifest these issues.
 
Wildeyed said:
Got the call! Parts are in and I've got an appointment for motor unit and drive unit replacement on May 25th. I'm told it should be a one day overnight stay and I'll be getting a loaner. Back in February I guessed parts would arrive around May 24th long weekend. Expectations met. Here's hoping it works! By the way, my Service Tech mentioned that there IS an official bulletin about the drive unit noises from Hyundai with recommended fixes. So any dealership should have guidance available to them should your car manifest these issues.
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TSB now available (31 pages!) for this issue - It's only taken three years!

https://static.nhtsa.gov/odi/tsbs/2022/MC-10211676-0001.pdf

John.
 
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