Passat (B6) :: 2008 2.0T Wagon Running Rough And Threw Emissions System Code

Our 2.0T (2008 Passat Komfort Wagon) with 70K miles is sitting in a mall parking lot and won't turn over. The lights and accessories all function just fine, and don't change/benefit from a battery jump. DRLs and all dash indicators light up like normal.

We push in the key fob and absolutely nothing happens. No error messages or anything. I tried a half dozen times; no change. Two things to know:

1) The car is under a recall for defective Electronic Steering Column Lock. I understand this can invoke the immobilizer? Car does seem immobilized. (I hadn't gotten the car in for the recall.)

2) The car recently ran rough and threw an Emissions system code. I hadn't gotten that code read, yet, but the roughness sorted itself out. I think this is unrelated and may be a case of "car wash syndrome" as my wife and son occasionally run the car for a minute or less to move it from the driveway to the street.