What’s calibrating anyway? The cameras don’t move
Sigh. Hit the little car icon, bottom left corner of the screen; you get the usual plethora of control buttons. Select the (vertical) tab button for Service. In there, there's a bit where you can "clear" the camera calibration.
You then go and drive the car manually, sans FSD/any kind of autopilot, until the car is happy. It will put up a little icon where the Steering Wheel icon (telling you FSD/whatever is available), with a little "I'm full" marker slowly going around 360 degrees. Usually takes about 20+ miles on an interstate with well-marked lanes, which is recommended. The car will then tell you the cameras are calibrated. The instructions say it takes up to 100 miles; I had to do it a couple of weeks ago when the SO's MY had the front fender camera replaced.
The "calibration", as I take it, gets all the pixels of all the cameras lined up with each other for an integrated whole, as far as the driving computer is concerned.
There have been occasional reports that, after doing a calibration, weird/flaky behavior in FSD has been reduced or eliminated. You'll occasionally hear a report that, after a software upgrade, that the camera calibration was lost.
I guess.. I've been noticing that both of the Teslas, at least before that left fender camera replacement, had, on city streets, been kind of hanging out right of center on the lane. Not a
strong notice; the car, in FSD, has a tendency to move away from larger vehicles in one adjacent lane or another. After taking the SO's car out for its cal drive, on the way back, I sort of picked up that it was staying in the center of the lane more. Again, this wasn't
that obvious, but it seemed that way.
So, after getting home, cleared the calibration on the M3 that's my daily driver and repeated the cal run. Interestingly, it took a few more miles (25 vs. 21) for the M3 to do its bit; and, yeah, seemed to be a bit better centered afterwards as well. Note that neither car had had a calibration run since said car was bought; the MY in 2021 and the M3 in late 2023. Despite all the numerous software updates.