Bad software is turning some Mustang Mach-Es into ‘electric bricks’

Photo by Sean O’Kane / The VergeCharging is a common concern with electric vehicles. But some owners of the brand-new Mustang Mach-E have run into a peculiar problem: their electric SUVs won’t start even when the main battery pack is full.
That’s because, The Verge has learned, there’s a problem with some early Mustang Mach-E SUVs that involves how the much smaller 12-volt battery gets charged. It’s the latest in a growing line of small issues that have come to light during the rollout of Ford’s first long-range electric car.
As is the case in other electric cars, the Mustang Mach-E keeps its 12-volt lead-acid battery topped up by essentially sipping power from the much larger lithium-ion battery pack. Based on owners’ accounts across multiple forum threads, including…

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