haudi

My front brakes have been acting weird..like sometimes when I'm backing out of the driveway, the pedal "moans" and sinks a little farther down to the floor...of course the brakes always stop-whew! Also, the pad sensor has been going on all the time!
So...I took both front wheels off yesterday...I figured that I needed pads...not even! The front pads on both sides are THICK!
Also..the fluid level is correct under the hood...
So...I'm thinking POWER BOOSTER???? Or that DUAL CIRCUIT electronic abs system..

The electronic thing, I figures would be connected to a fuse-right? WRONG! And I can't find any info on this power booster!

Has anyone ever had to do work to their brake system-other than pads/rotors??? I need to figure out what is going on with my brakes!
What could it be?? Fried wire?? Where to start!??

~Christy