Warranty issue- vibration 2021 Supra

[jtsang25]

Hey guys, I have an interesting/unexpected news to share...

I recently changed my steering wheel... and after that, the vibration at 55~65 mph is gone, completely. Yeah, it's gone...

So was the bolt in the middle of the steering wheel not torqued to spec from factory?

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[Happy Polar Bear]

So was the bolt in the middle of the steering wheel not torqued to spec from factory?

I didn't torque it to stock spec for sure but the torque is probably irrelevant, because I tried lossening the bolt with stock steering wheel and it didn't help.

 

[jtsang25]

I didn't torque it to stock spec for sure but the torque is probably irrelevant, because I tried lossening the bolt with stock steering wheel and it didn't help.

Then are you sure the vibration wasn't coming from lane departure warning (suppose to shake) and not staying in the lines at that speed?

Did you connect the module on the new steering wheel?

 

[Happy Polar Bear]

Then are you sure the vibration wasn't coming from lane departure warning (suppose to shake) and not staying in the lines at that speed?

Did you connect the module on the new steering wheel?

I guess no one in this thread would miss that...

 

[Brazuca]

2023 AT 3.0 here and I also have the vibrations in the 70mph range.
Everything stock.
Really annoying that some people have it and others don't.

 

[Happy Polar Bear]

Hey guys, I have an interesting/unexpected news to share...

I recently changed my steering wheel... and after that, the vibration at 55~65 mph is gone, completely. Yeah, it's gone...

OK I was wrong...The vibration came back.

 

[lucky phil]

I've chased down this exact issue in other makes of cars and they are frustrating to say the least which is why the vibration tool I posted looked useful. Before I thought of dumping the car because of this issue I would remove the tail shaft and send it to a tail shaft manufacturer/specialist/repairer and have the balance checked. The balance criterion for mass production can be pretty loose and a good custom tail shaft builder will be able to do a better in many cases.
Phil

 

[nitroyellow90]

Hi everyone. i’ve just created account here solely for this thread.

I just picked up my second brand new supra 2023 and it’s not even broken in yet but have noticed the exact same issue between 110 km/h and 125 km/h. a constant and consistent vibration felt through the steering wheel. my previous new supra did not have this. so i’m not buying what was reported by toyota europe elsewhere in this thread.

I had the tires rebalanced today as the first order of business and unfortunately it did not help.

However, i did notice when i unlock the steering column the problem completely disappears. It may seem obvious but just thought i would throw that in there if this helps towards resolving the issue. Of course i can’t drive with the steering column disengaged but just throwing it out there in case it helps narrow things down. Let me know what you folks think.

 

[lucky phil]

Hi everyone. i’ve just created account here solely for this thread.

I just picked up my second brand new supra 2023 and it’s not even broken in yet but have noticed the exact same issue between 110 km/h and 125 km/h. a constant and consistent vibration felt through the steering wheel. my previous new supra did not have this. so i’m not buying what was reported by toyota europe elsewhere in this thread.

I had the tires rebalanced today as the first order of business and unfortunately it did not help.

However, i did notice when i unlock the steering column the problem completely disappears. It may seem obvious but just thought i would throw that in there if this helps towards resolving the issue. Of course i can’t drive with the steering column disengaged but just throwing it out there in case it helps narrow things down. Let me know what you folks think.

Interesting but not surprising. Resonant vibrations are felt when the component generating the vibration interacts with another component with the same natural resonant vibrating frequency. All components have their " natural" resonant frequency and if the generated frequency aligns with another components natural resonant frequency then you feel vibration. It's why they put bar weights on motorcycles for instance so the handlebars natural resonate frequency is adjusted to stop them interacting with the engines vibration frequency at the most often used rpm band, usually the cruising rpm. Problem is with all of this is you can't always get it totally right and have to settle for getting vibes but getting them at a speed and or rpm that's outside what most people use day to day. So in your case unlocking the wheel is either isolating the wheel from the vibration source or changing the steering columns natural frequency range by affectively altering it's static mass. It would be interesting to see if you bolted say a 500 gram weight to the steering column assembly structure whether or not it made a difference. You might shift the resonant patch up to a speed where you don't normally sit day to day. If it then resonates at 120-130 mph then it won't be an issue anymore. This is usually the aim to shift the resonating to an area you either never use or only briefly transition through in normal use.
The chassis mount structure for the steering column will be vibrating as well but not at it's resonate frequency so it will be unaffected but whatever is bolted to it such as the steering column may be. I've been sent flying on commercial jets a few times in the past to try and isolate flight vibrations. Tricky business almost always.

Phil

 

[Mrgolde]

pretty sure its the tires, i used to have it, but once I drove it for a while it went away. Maybe braking in the tires did the trick.

 

[nitroyellow90]

pretty sure its the tires, i used to have it, but once I drove it for a while it went away. Maybe braking in the tires did the trick.

this is my second brand new supra. that was never an issue on the previous one.

 

[Happy Polar Bear]

this is my second brand new supra. that was never an issue on the previous one.

There are people replacing the tires, wheels, doing the alignment, wheel balancing and stuff for multiple times but still no results. It might not be soley related to tires I think.

 

[jchadwell]

What does it mean to unlock the steering column? And if you can’t drive the car with the steering disengaged how do you know it doesn’t vibrate?

 

[jtsang25]

What does it mean to unlock the steering column? And if you can’t drive the car with the steering disengaged how do you know it doesn’t vibrate?

It's the latch that you disengage to adjust wheel position. And no it's not safe to have it disengage while driving.

 

[jchadwell]

It's the latch that you disengage to adjust wheel position. And no it's not safe to have it disengage while driving.

Sometimes my brain just refuses to operate correctly. Thanks.

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