For lack of a better place...
These are cute. And by cute I mean scary. If you've got one of those plus a cluster PIN recovery tool, I think you might have what you need to walk up to any given VAG Immo2/3/4a vehicle, make a quiet nondestructive entry, and start/run/drive it away within two or three minutes. on Immo3 at least, you can perform an emergency start with a diag session up to the cluster with the Immo PIN entered, no transponder needed, so turning the ignition lock cylinder with the jiggler or decoder is enough to get started down the road.
I'm trying to remember how the anti-theft alarm figures into this. I feel like there was some starter interlock on my old Immo3 B5.5 Passat, and I wonder if pulling the fuse to 46-Central Conv would be enough to defeat that. On my Immo4a Phaeton with keyless entry, I think if you unlock a door with the physical lock cylinder, there's something like a 15 second timer for the car to find a valid transponder in or near the car before the alarm goes off, and I can't think of a way to take out KESSY or its power supply or its alarm horn fast enough.
