Update: FDU replaced and abnormal sound is still there. Sound is slightly different but still a vibration noise not present on other EVs and sounds like shit. Rivian clearly has a production variance issue with their Enduro drive units (Gen1 at least). Vehicle bought back by Rivian after 20+...
SLC service said they have received complaints about the issue, have looked into "fix" but no official documentation on it. Current guidance appears to be FDU replacement and will hopefully follow through with that on my car. Id recommend escalating if you want it fixed now. If not, I would...
Confirming same abnormal vibration/grinding noise between 20-30 on regen, especially at exactly 23mph. Mine is a Gen 1 Dual Motor vehicle and has done this since delivery. Interestingly, it does not make this noise initially when motor temp is below 100F; does it all the time once after vehicle...
Confirming from Utah Service that this "fix" was added to official Rivian documentation 3 weeks ago. "Chirping suspension" which i believe is a noise issue present on all Gen 1 vehicles. Service notes say fix is "joust line box replacement" IF customer complains of noise. Hope this helps folks.