Drinyth
Member
That kind of the worst part of the whole thing. I don't mind going back to the SC multiple times to get them to hear and resolve the problem. But it sounds like Tesla doesn't have a firm grip on what the problem is or how to definitively fix it.Yeah, that seems to be the mystery. One theory was that a larger portion of the drive units have this sound than we realize, and/or the units they use as replacements are more likely to have it for whatever reason.
Another theory was that it’s the actual act of replacing the DU that solves it. Like the replacing of coolant, seals, etc. does the trick, which would explain why it sometimes takes two attempts.
The first DU replacement I got made the sound but it was in a distinctly different speed range as the original. After the second replacement (just over a year ago) I haven’t heard the noise once.
So we're left with having them make educated guesses and possibly replace things with parts that have the same issue(s) as the original ones that they replaced. It's just kind of a crap shoot really.
As a somewhat unrelated note, looking at my Teslamate data those two test drives that were taken from the SC hit a higher "max Power" rating than any other drive that I've taken since I owned my vehicle. Overall, they weren't driving recklessly based on the data, but they were certainly being rather heavy footed with my car at times during their test drive when they didn't need to be. That further makes me less comfortable leaving my car with them for an extended period of time, especially when they don't have a definitive fix for the issue.