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Updated to 2018.18.3 now have 12v battery problem

I just updated to 2018.18.3 today and immediately after the update I received the “ 12v battery needs service” message on screen.

I called the Service Center and they checked my Model 3 remotely and said if the error doesn’t go away I will need a battery in a few weeks which will be replaced by a Ranger. I’m concerned that I might get stranded.

Wondering if anyone else has has this error message.



Active Member
May 5, 2016

Agreed....that was my first thought/question as well. Do you have a dashcam hardwired or connected to the 12v battery? Some who wired cams this way have trashed their 12v battery needing a replacement. Barring that if not maybe just a bug with the update? Please let us know what tesla says. Have them check your car remotely.


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