We don't know that this is true. The tesla service advisor said it was "many" newer 3's and Y's with the "lastest autopilot computer". I asked for numbers but they wouldn't or couldn't say. They must know how many cars are affected through because there are many error messages in the logs associated with the issue and Tesla collects those logs remotely. They used those log entries to determine, in my case, that my issue was not hardware and instead must be fixed by software. Of course, they could turn out to be wrong about the diagnosis. I am waiting for the second update since my issue got bad to see if its resolved. I really would prefer they don't open up the car to replace the computer, the car has enough rattles already.