A good repair practice would be to do a pre-scan before any electrical is disconnected and work is started, so any issues can be documented, then a post-scan after work is complete to confirm the repairs were completed properly. Doing a pre-scan & post-scan is recommended by most manufacturers for pre- and post-collision work as well as paintless dent repairs that require disassembly.
Looking at a scan report, techs can see faults that are from the damage, and electronics that haven’t been reconnected properly or require being recalibrated.
The post-scan can decide & recognize issues unrelated to the damage from those generated because of a collision, disconnecting electrical, or pre-existing issues.
If your car requires recalibration or you are not sure if it will we recommend contacting Quantum ADAS Calibrations LLC