Initially the recall said 199 cars impacted in US. NHTSA filing now has the number as 501. Transport Canada recall 2023-564 count is now increased to 54 from 17. It appears the initial software update for these cars didn't have correct logic in the update.
"Additionally, the software supplier advised the latest software files released for installation into 2019 and 2020 model year vehicles contains an error in part of its diagnostics strategy and the required detection of battery module performance issues is not fully present. As a result, the vehicle remains with the safety defect even though the retailer reported completing the safety recall."
It hints at cats not updated via TOPIx Cloud or have the BS level will need to get a second inoculation shot and could explain the difference between BS and BT.
"Additionally, the software supplier advised the latest software files released for installation into 2019 and 2020 model year vehicles contains an error in part of its diagnostics strategy and the required detection of battery module performance issues is not fully present. As a result, the vehicle remains with the safety defect even though the retailer reported completing the safety recall."
It hints at cats not updated via TOPIx Cloud or have the BS level will need to get a second inoculation shot and could explain the difference between BS and BT.