The Unofficial Tesla Tech wiki

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Welcome to the Unofficial Tesla Tech wiki.

This site is dedicated to providing information on Tesla vehicles which may not be available elsewhere. These articles are technical in nature and are intended for those with the skills and knowledge requisite to make certain modifications to their vehicles. The official support location for this wiki is at the Tesla Owners Online forum so you can ask questions there.

Why? Some of us have bought Teslas which had been totaled in an accident, and carefully rebuilt them, only to find that Tesla has now excommunicated the car and we no longer get firmware updates, Supercharging, Autopilot, access to the mobile app, etc, services which were paid for at the original purchase of the car. Tesla is justified in this inasmuch as the high voltage (400v) system is a hazard, and they will inspect and certify this for a fee, but even after certification they will never re-enable the aforementioned services for this car again.

Further, the Media Control Unit (MCU) for the car, it's 'center of command', has an eMMC (Hynix) which is low quality and has started failing in Teslas 2012-2017. In 2016 I was the first to work out the procedure to replace this with a high-quality Swissbit eMMC and how to put the original firmware for the car on this new chip. And I am the only one to have published this information to date. This enables anyone with basic mechanical skills and a well-developed knowledge of Linux to perform this replacement. A number of paid services are now doing this for $1,500 a pop -- Tesla will replace the MCU for $2,500, but the unit they install has the same Hynix chip and will invariably fail some day.

This is a MediaWiki site so markup is the same as on Wikipedia. Anyone can add or modify content if they register, and I welcome all input. I will be adding my own original content as I can. If you don\'t have time to learn WikiMedia markup, just forward your article and I will translate, with attribution of course.

This site is intended to share information in the spirit of open-source. All articles are licensed Creative Commons Attribution Share-Alike and so may be used and shared freely without restriction as long as attribution is made.

Carl A. Cook

Before (aka 'The Horror'):

Disassembled after purchase at IAAI. Note driver's front wheel is set back from passenger's due to cracked shock tower.


My car, almost finished. I'm hanging out the back putting in finishing touches.