Check Suspension Light
I have a 97 XLT that has 4 corner leveling and my compressor went once right after the warranty. I took it to the dealer (I'm in Canada) and explained to them that the warranty just expired few weeks and few hundred km's ago and they did a 80-10-10 for me. Meaning that Ford will pay 80% of the cost, 10% covered by the dealer and 10% by me. The total cost was quite large and I ended up paying around $2-300. It has been a few years now and I am not sure how much it cost now. Good luck and maybe you can get your local garage to locate a used one in the junk yard, but no guarantees...