The lock cylinder on the driver's door would not operate with the plastic key, so I removed the unit.
On the B6, there is an additional screw just below and right of the torx twenty that releases the cylinder.
On inspection, it is a different style than previous (B5,5.5) that can be repaired or cleaned.
Four drift pins hold the two body halves together. Not wanting to destroy the housings, I stuck it back in the door.
I will pull one from the p'n'p yard and disassemble and see if it is a repairable unit. My concern is removing the tiny drift pins
after splitting the housings.
I'd like the ability to get in the car should an electrical fubar prevent the fob from performing.