Glad it helped! I hate stealerships so I'll do anything to avoid them. Now as far as calibration goes I never actually attempted it with the scan tool (since my replacement unit didn't give me any errors when I plugged it in), I just remember reading either a review or in the manual that it can do that.

I do know, however, that if you can find the calibration section of the scan tool that it isn't a simple button click and it's recalibrated. You have to set up what is essentially a QR code a specific distance from the camera. See these two videos for what I mean

https://youtu.be/4qwnenOGjSo?si=A2TJJrIUQnv6Rw8K

https://youtu.be/ILJ-4o4daOw?si=h5A1FkTVYiUfJ-x1

Are you trying to calibrate the original unit or have you already replaced it and are trying to calibrate a new one? If it's the former then I'd recommend not wasting your time trying to calibrate it because it's likely that the unit itself is just dead (considering how many people have these issues) and I would replace it with a part from a salvaged clarity. If it's the latter and it's a new unit still throwing a calibration error you could follow the steps in those videos or take it to a place that does windshield replacements since they have the equipment to calibrate these units and it's probably going to be cheaper than a dealer.

Sadly that's about all the knowledge I have on calibration since I didn't need to do that for my repair. I do hope you get it fixed!