Check the air compressor for short
There are only a few wire's running to your air compressor and if none of those are causing the problem you are going to have to try and get under the rear of the car where the two wiring harness's are at each air bag and start from there working towards the front to try and find a loose wire or a bad spot. other than that your bags may have leaked causing your compressor to work over time and just blown the fuse and also wore out the compressor.
A possible cause for this is that air suspension pump is continully working due to a leaking air bag
its under the cap of the fuse box
In the fuse box, located on the passenger side of the car under the hood. should be a 30amp fuse. Also there is the square black fuse (next to the small fuses) that controls the air suspension also.
User manual for Lincoln Navigator (with fuse diagrams and descriptions of purpose for each fuse/relay location) can be found here: http://www.analogstereo.com/lincoln_owners_manual.htm
a coin may have fell in the lighter
it is located in a black box beside the radiator it takes a 30 amp fuse
Under the hood, black box, Fuse #12 also has relay (#4)
I just fixed the air suspension on my 2006 navi, we changed the compressor and read the Manuel and fuse number 111 was out. Check your fuse box its one of theo 20's its a long fuse almost like when your pulling a tooth.
the relay for the air suspension is under the hood in the fuse box and its number 4. I just changed it on mine.
Not enough information. WHICH fuse blows out???
It is either in or next to the fuse box under the hood.
A fuse blows when there is a short circuit or an overload in the circuit.