I bought 1 owner 2003 Town Car Signature Premium. GREAT shape. Only 68,000 miles. The battery terminals were corroded so I cleaned them this past Friday. When I put them back on I had to jump the battery. After that, my driver seat controls stopped working, the mirror controls stopped, the air suspension light on the dash stays on and the power steering is almost like manual steering. All 4 things share the same fuses and fusible links. (a couple on one set and a couple on another). I bought $40 in fuses and fusible links Saturday at AutoZone but it never helped. New battery also (old was bad). Still no luck. I tested the fuses and links and they are showing good BUT I have no way of testing the circuits to them.