Sometimes I think this issue would've been fixed immediately if it were a Model Y. There's no way Tesla could keep the issue under wraps like this
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"Refreshed" Model S model VIBRATION tracking and information thread!!!
- Thread starter jebinc
- Start date
Probably part of why they put the new technology on the low volume vehicle first. Thigh I still can't believe that it is taking them this long to resolve the issue.
n2mb_racing
Active Member
The previous half shaft issue took a lot of years to be resolved. I'm not really expecting this one to be fixed anytime soon.
WilliamG
Hinge Fanatic
Yeah, this wouldn't surprise me. My 2022 S Plaid had an issue for half a year where it would simply not wake up from sleep from any mobile device remotely (BT was fine, remotely was not). If Sentry were enabled, no issue (because the car wasn't asleep), but otherwise - nope. As far as I'm aware, there was never a TSB for something like this, but Tesla was aware (they couldn't even connect to the car when it was asleep), and it did get fixed about six months later. Other people had the same issue with 3s, Ys etc.
I am the one who posted this in a Facebook reply. I have asked my contact for the article. Otherwise I am going there during the week to get it. I love the car but can’t stand the vibration. Mine is a little different than the typical shudder. I’ve been there three times about this and only now I get told this.
n2mb_racing
Active Member
Well, it's not a software issue. It's a hardware problem with the half shafts. But, it can be fixed (or hidden) with software. They could de-activate or reduce the torque from the front motor at the critical speeds (between 40-50 mph) to eliminate the vibration. But, likely at the expense of some range, since the front motor is more efficient than the rear motors, and under light load I believe they use the front motor exclusively.
Nope. The refresh Model S and X moved to using permanent magnet motors both front and rear, the first for Tesla, and you can't free-wheel a PM motor. Other people that use PM motors on both ends, Rivian/Kia/Hyundai, have implemented a driveline disconnect so that they can physically disconnect one motor under light load for efficiency. Tesla didn't so they have to run both of them all of the time and keep them in sync.
Propofoln
Member
What about my 80+ mph vibration? I don’t have the 40-50 mph vibration in my 2023 that I had in my 2021
n2mb_racing
Active Member
Sure, but they can control how much current goes to each. Whatever the track mode rear torque bias does eliminates the vibration.
Maybe there wouldn't be that much of an efficiency hit then. Just a simple software fix would do it....
n2mb_racing
Active Member
I don't know about that one. I think that's a hardware imbalance. No idea how to fix that. The 2021s don't seem to have it.
Propofoln
Member
track mode with 100% rear bias did not change the 80+ mph vibration
Propofoln
Member
The tires have been balanced 5+ times, front rims changed out, front control arms swapped out. Now they are about to swap rear wheels
n2mb_racing
Active Member
Good luck. It seems like a different vibration than the one we have between 40-50 mph.
Propofoln
Member
It is. Like I said, i had that one with my 2021 model S plaid. This is a new one. I don’t have 40-50 mph vibration with my 2023
I think we go to the same SC. I've been told to wait after my half shaft replacement also.
Daniel is my go-to guy there. Usually works afternoons. Everyone else sucks
n2mb_racing
Active Member
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