Except they did not fix anything. The battery readout was lying as so ordered by Musk. This caused people to complain, wanting it fixed. Instead of fixing it (in a service centre or remotely) they lied some more. What's so hard to parse here?
I think the 'fix' was mostly checking that the car was working as designed, then calling people like this hn commenter[1], and educating them that slow gentle driving is how to get the estimated range, not aggressively braking and driving 90 mph with the AC on max, windows down, and the trunk loaded with 2000 lbs of junk.