I just sent this email to ownership@ because I'm starting to get really pissed off this hasn't been returned yet and there has been no mention of it returning recently as well as the removed verbage from the ordering page that it lowers.
"It's mid-January already and no word yet on the air suspension lowering functionality returning to us. Is this still planned or is this permanently disabled forever? I do A LOT of highway driving (36k miles in 10 months ownership), and this is killing my Wh/mi. Essentially this is translating to more $$ out of my pocket for electricity costs. PLEASE RETURN THIS FUNCTIONALITY ASAP."
I highly suggest that everyone here sends an email to ownership@. If we all start hounding them, it might help speed up the return of this functionality we all paid for. It is costing us all $$ in electricity. Although that's pretty hard to prove, but given Tesla's own statements they'd be contradicting themselves if they said otherwise.