#MCUv1

As the most-successful manufacturer of electric vehicles, Tesla is often at the forefront of new challenges relating to advanced automotive technologies. While the brunt of this has revolved around its software, mainly Autopilot, it’s also going to be among the first automakers to confront widespread battery recycling ⁠— something it’s already planning for at its Nevada Gigafactory.

Nothing last forever and, like every internal combustion vehicle, EVs have parts that go bad. Over the last six months, there’s been a growing number of reports of customers claiming their Teslas are bricking out like old phones. Displays are going dark, accessories are… inaccessible, and charging is often not an option. The culprit appears to be the embedded Multi-Media Controller (eMMC) on MCUv1 units, which logs data using flash memory.

Apparently, Tesla is overworking these systems (at least on some models) to a point where they can’t take it anymore. It’s basically the same thing that would happen if you filled and wiped a USB drive hundreds of times everyday. One morning you’d plug it in and find that it’s no longer functional due to being burnt out from overuse.