where do I located the computer box for the all wheel drive

on 2002 Mercury Mountaineer

When I am driving I am hearing a noise seems like it is coming front wheel when I drive less than a half block, also the abs light stays on all the time.

Asked by for the 2002 Mercury Mountaineer
1 answer
whatever is setting the abs light needs to be found out. that may be causing the asb motor to run causing noise. have codes checked for abs.