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  • April 18, 2021

Exclusive: A Software Problem is Bricking Some Early Mustang Mach-Es

 Exclusive: A Software Problem is Bricking Some Early Mustang Mach-Es


Charging 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. From a report: 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 one who spoke to The Verge, the problem is this stops happening whenever the Mustang Mach-E is plugged in to charge up the larger battery pack. That is especially an issue for owners in areas with cold weather, as Ford encourages them to leave their Mustang Mach-Es plugged in so the SUVs can use power from the grid to warm up before driving. The 12-volt battery powers many of the Mustang Mach-E’s systems (since the larger battery pack is high-voltage), and so when it dies, the electric SUV cannot be started. When this happens, owners have reported the FordPass app says the vehicle is in “deep sleep” mode. Some forum members have started referring to it as the “electric brick” problem.



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