Please take it easy on me, I'm not a car guy and my knowledge is very limited.
Today my wife called me, she had the jeep (2004 Wrangler X) and said the following:
The jeep was driving fine, she went to a friends house to pick up said friend. She parked in the driveway, turned off the jeep, and went inside with everything working as usual. When she came back out, she started up the jeep and released the e-brake but the light didn't go off. She engaged and disengaged it a few more times, light still on. She puts it in reverse and gradually let off the clutch, the jeep catches at that "sweet spot" just like usual and slowly starts to roll (indicating that the e-brake was definitely disengaged to the point that the same amount of force to start it rolling was required as usual, brakes were not holding anything up). She goes to brake and squish, the pedal goes almost to the floor before finally engaging the brakes.
She was able to drive it home, brakes still worked but required almost 100% travel time on the pedal before they reacted, and then the transition from no brakes to "lock em up, sally" happened over the span of the last 5% of the pedal travel.
Now, I don't think SHE did anything. I think something just finally went out, got loose, or flipped me the bird. I have a very rudimentary understanding of things, and I assume that the brake pedal activates some sort of hydraulic pump that distributes whatever fluid is in the lines to the brake pads causing them to stop the car. I checked the brake fluid reservoir and it was still topped off, so wouldn't that rule out a leak from the lines themselves?
Does the braking system operate similar to my understanding, and if so, where could something have gone wrong to cause the squishy pedal? Would I have found a leak of some sort if there was any issues with the brake lines? Does the 2004 Wrangler have a sensor somewhere that would trigger the e-brake light on the dash if there was an issue with the braking system that didn't actually involve the e-brake?
You guys know these Jeeps inside and out, so fill me with some knowledge!
2004 Jeep Wrangler X 4.0L I6 with a 3"BB (from the previous owner) and 33" tires. No BL, no T-case drop, nothing else done as far as I know.