BSI BOX FAILURE

Hi everyone. My 2017 3008 GT Line wouldn't start or stop a few times while it was under warranty. I experienced this from time to time after the software was updated. It then drained the battery, and the service center installed a new battery in 2019. I bought a new battery again in January 2023. The battery drained again in mid-May. The electrical fault light came on. I took it to the battery service center, and they said the battery is fine, have it checked. Today I went in for my 50,000 km maintenance and they told me the BSI box needed to be replaced. They also asked me a considerable fee. Can anyone tell me who has knowledge of this and can provide the name of a competent repairman? Thanks in advance.

The service center recommended replacing the BSI box on my car, so I took it to an ECU repair shop. He connected it to the computer and saw the errors appearing on the BSI box, all of which were marked "TEMPORARY." He said that these errors could be detected during a battery replacement but needed to be reset at the service center, suggesting they might be trying to get more money. He performed the necessary resets and said to come back if any errors occur. He completed the job for 200 TL, which required 7000 TL. We'll see if the battery continues to discharge, or if I experience any problems. Good luck with whatever you do...