BMW 3-Click Remote Engine Start, Activated by FSC Code Without Unlocking the ECU

Your BMW has the hardware for remote start but the three-press key trick does nothing. Here is what option 1CR really is, why it is an FSC activation and not an ECU unlock or a tune, which petrol G-series cars with BDC3 and iDrive 7+ qualify, the codes involved, what gets coded, and how to get it switched on for your VIN.