same thing happened to me
the fuse is the 15 amp fuse labelled "cigar" located in the kick box under the steering wheel where your left foot would be
my problem was caused by aftermarket audio cd\dvd player hooked into same circuit
How did you fix it? I am having the same problem with 2004 model, the fuse is blowing out. It say "CIG 1" (7.5 AMP) on the cover and a 15 AMP is installed. The manual says 7.5 AMP panel backlight.
Any help woud be greatly apreciated.