Maybe it's some sort of high-tech new thing, but on "olde fashioned" vehicles the brake system doesn't have any sort of pressure in it until the brakes are applied.
So, while I understand the "brake fluid damaging the floor paint" scenario, I'm a little lost on the "front caliper spraying brake fluid around enough to take the paint off of the front fender" scenario.
Maybe some hard braking incident caused the faulty caliper to fail and dump fluid in the wheel, which in turn flung it up on the fender. Then the vehicle was parked in the garage, where the fluid dripped on the floor.
But boy, I'd think such a severe loss of pressure would be tripping ABS idiot lights all over the place!
Any more detail on this incident? It might be handy for others to know what to look for in their own vehicles. I've never heard of a caliper "exploding", but there's a lot of fast moving parts there, so I guess something like that is feasible...
