The front passenger seat’s OCS required a service bulletin application, involving a retrofit of the seat belt reminder sensor and component replacement, confirmed by a Tesla technician. The repair likely falls under TSB SB-19-20-003 (2017-2019 Model 3), addressing OCS electrical interference causing airbag indicator issues, which can affect seat belt reminder functionality. The TSB involves retrofitting parts My 2019 Model 3 (39,140 miles) needs an OCS repair per SB-19-20-003, a known safety issue from 2019 affecting airbags and seat belts (FMVSS 208). Since it’s a manufacturing defect and a safety risk this should be under a recall.