Tesla Identified As Most Recalled Car Brand, Mercedes & Toyota Least

The manufacturer identifies an issue with a vehicle, and "recalls" it to one of their service centers to fix it. Usually this is some defect in design or a part that needs to be corrected.

List here: https://www.tesla.com/support/annual-and-recall-service

I believe those are only the hardware recalls since everything else in this article is a simple OTA software update.