I have confirmed with a Federal Mogul technical specialist that their instructions with the coil conversion kit are NOT correct for 1998 Lincoln Town Cars and later models. Because the air suspension system is now linked with the Electronic Variable Orifice Power Steering and data is sent from the Air Suspension/EVO Steering Module over the Multiplex Communication Network there is now NO WAY to shut off the air suspension warning message after converting from rear air springs to coil springs. He assured me that the coils work well after the conversion, but one has to be willing to live with the warning message. He also told me that they have requested the coil manufacturer (Moog) to correct their instruction sheet to reflect this reality on the newer models, but so far they have chosen to continue with the old instruction sheet.