Tesla seems to be facing the completion of the production of Model 3/Y recently. Due to the lack of electronic control unit (ECU) supply for the charging port, it has not been able to deliver these completed production Model 3/Y to the car. Pre-purchased owners.
While Tesla is trying to internalize more of its component production and supply chain to reduce the impact of related component shortages, it still relies heavily on third-party supplies. And like most other automakers, Tesla has run into parts shortages.
Browsing the posts on the Tesla Auto Club forums, many Tesla buyers report that their deliveries have been delayed due to a missing electronic control unit (ECU) at the charging port. About a dozen Tesla Model 3 and Model Y buyers have reported on Tesla Auto Club forums that their new cars have been built but cannot be delivered due to the lack of a charging port ECU.
According to their report, the problem appears to have started to appear in mid-April, and Tesla will deliver the vehicle from the factory to a local service center to wait for the part. In some cases, the vehicle is parked at the service center for more than a month.
Based on the number of reports, this appears to be a fairly common problem, and Tesla is shipping cars with missing ECUs to service centers, suggesting the problem affects a lot of vehicles, or it takes a long time to get the part. Otherwise, it would be more efficient to fix the problem at the factory, while Tesla ships the parts to the service center, which would add a lot of work to the service team.