input: [CATEGORY] 12V Battery [PROBLEM] Dashboard warning about needing to replace 12V battery [REPORTED BY] Ben W here [FIX or WORKAROUND] There was a software bug that was causing the 12V battery to drain. Fixed sometime before 4.0. If you still have an issue and are already on 4.0 call Tesla Ranger or Service to replace [CAUSED BY] 
output: Bad batch of batteries/Software Bug