Toyota Vexes Me and I Shall Have It

Changed car battery in Corolla… and then got locked out by an RFID engine immobilizer and previously unknown alarm system becoming activated after 6 years of stealth. Spent basically half a day figuring out how to hack the damn RFID key sequence to override the engine lockout, and how to pair and clone the damn remote FOBs to override the alarm. As a result, I now know how to boost, erase, and reprogram keyless entry Toyotas (among others). A productive day.