EasyPASS Enrollment at TXL
 

Does anyone know where exactly the EasyPASS Enrollment center at TXL is? I can't seem to find anything more specific than Terminal A

Should be at the Bundespolizei Office. That would be at the main terminal A on the ground floor. There's a somewhat hidden area with the Priority Pass lounge, Lost+Found, Customs and a few travel agencies right below/behind the large flight information displays.

There is a passageway underneath the big arrivals/departures board, opposite Leysieffer. Go through there and you'll see the Bundespolizei office (on the right I think).