Where is the driver's side seat control unit located?

Had the same issue after quite a bit of water got into my car (2012 A5 Cabriolet), just the driver's power seat would not move. There was about two inches of water on the floor of the backseat. Did the following to try and troubleshoot: - Dried everything out with some large fans, and a small hair dryer (the hair dryer was used to dry the small compartment set into the carpet under the driver's seat, where the wiring loom from the seat connects). - Checked every fuse with a multi meter. (Since the manual doesn't provide an exact named fuse, I just checked them all.) - Ran a VAG COMM test, got multiple errors. The CAN BUS said it was down. So there was more than just no power to the seat. - Swapped the seat control module from the passenger seat and the driver's seat, the passenger seat still worked using the driver's seat control module, but the driver's seat still would not move. The control module for the seat is a small box with a few attached connectors mounted to the bottom of the seat. I couldn't move the seat to get at the 4 bolts which mount the seat rails to the floor, so i instead undid the two bolts which mount the front of the seat to the rails on the floor (they are mounted horizontally underneath the front of the seat, and need an Allen wrench to get at them, the head of the bolt faces inwards). This allowed the seat to tip backwards, pivoting on the remaining two bolts. Doing this gave me access to the seat control module, and a good view down into the compartment set into the carpet where the seat wiring connects. Doing this check also confirmed i didn't need a new seat control module (good thing considering what they cost). - Checked for power on the red connector in the compartment set in the carpet under the seat (compared the readings I got to the passenger seat readings). I wasn't getting power on the red connector (I was on one of the others, green I think, for the seat heater). - Used a tone generator to try and trace the connector which should have power, to see where it went. Some of its wires ran under the trim towards to the fuse panel at the left side of the dash. Discovered that the power wire wasn't generating a tone any further than the connector under the carpet. - Pulled up the entire junction box (the black plastic frame and the 4 colored connectors mounted in it) from the compartment set in the carpet under the drivers seat (it has one bolt mounting it to the floor on the rear side, and just clips in at the front), I discovered several wires had literally corroded to bits on the bottom side of the red connector. Based on how bad they looked it can't have happened from just this one instance of water getting in, it must have had a water leak which happens to pool where those connectors are. I was able to re-use the existing pins from that connector (to get those pins out you need to push something into the two holes on either side of the connector pin from the front, flattening both ends of a paperclip with a hammer worked surprisingly well as a makeshift tool). Once I cleaned up the two corroded wires and soldered them back into the pins, i just had to push them back into the connector, and then reattach everything. Once it was all back together it all started working fine, still don't know which one is the correct fuse, but checking the bottom of those connectors might save someone the many hours it took to find.