Three problems related to dash wiring have been reported for the 1998 Ford Expedition. The most recently reported issues are listed below.
1998 Ford Expedition interior lights staying on, door ajar light staying on, radio turning on and off by itself, trailer lights not working, dash lights flashing off and on. I found out there are a lot of problems with these cars having leaking windshields allowing water to enter the vehicle and cause electrical shorting on the gem and fuse box. Ford dealership said this is a well-known issue with a TSB 98-9-13 !!! I did a quick search on the internet and found that these can cause electrical fires or cause cars to start by themselves, losing electrical stability while driving resulting in several near accidents. (no brake lights, etc. . ).
Warning light for suspension system with air leveler on 4x4, suspension warning light comes on several times a week since the vehicle was new. Vehicle never leveled with a load on the hitch. The air compressor runs a lot and became very noisy over the years. The vehicle rocks back and forth, in, right side goes up and down a few inches, will not level under load. Never felt safe to tow anything which was the purpose for buying the vehicle. The dealer where I purchased the vehicle refuses to accept the vehicle for service. Took in 3 - 4x a year for same and they refused to look at anything except the computer readout. Presented list of related NHTSA reports and Ford said they do not use them under warranty. Purchased Fords best extended warranty which will expire in 3 months and the problem still exists. Compressor pump broke a week ago and they refuse to look at anything else. Initial recommendation was to disconnect warning light. Second recommendation was to sell vehicle if I didn't like it. No obligation for the 45,000. 00 paid. Cannot sell vehicle because the warning light comes on all the time and vehicle never level.
Doors, windows, locks all work peridically, the command module was defective. Cj.