Originally Posted by Bigfoot
Sorry to be the bearer of bad news. I had this problem with an 02 Explorer. If the 4x4 lights don't work, It indicates the 4x4 computer. Seems Ford used some junky modules from 2000-2005 that cannot handle voltage spikes. I found this out because my dad changed the battery and suddenly the 4x4 dont work anymore! Easiest way is to getr the electrical print from Ford. Make sure you know the month of manufacture! If you do not have 12 volts down to the shift motor with the key on, then 99% chance of 4x4 computer. If you do then take the shift motor off, mark the case for alignment and take it apart and clean it. then get rust built up around the stator. If you need a computer, go to silver state ford website. they are half the price of autozone and are a ford dealership!
great first post! & welcome.
what kind of dollars is she looking at? how long under this thing am i looking at?