Won't work if it's used. Service guy just told me there are some things that once paired/programmed to a car, can't be moved to another car. ebay is full of used Telsa items that simply can't be used if they have already been paired or programmed to a car - key fobs, Homelink modules, and MCUs are in this batch (I'm trying to swap my MCU2 in my MS with the MCU1 in my MX and they just said "nope, can't do it".
Of course I think this is bologna. They own the programming and code for all of this hardware and could easily swap and reprogram - they just don't want us running around buying used parts and they don't make $$ on the repairs/upgrades. This is just another Elon Musk way of sucking more $$ out of Tesla owners, and we keep coming back for more!
