New 2024 MME Rally owner here, nervously reading all of these comments about 12v emergencies and locked frunks... I do however, have a 4" diameter waterproof tool tube (bought at a tractor store) with a 12v jump starter that holds its charge pretty well for years at a time (Noco GB20) that I...
My Mach-E Premium is reaching 3 years of age. I am very happy with it. What is the expect life expectancy of the 12-volt battery? How does one check its status? Does the car provide a warning indicating it is time to replace the battery?