The rear pistons don't pump out like the front ones do. You have to stroke the parking brake pedal to work the pistons out. If the cables are rusted tight, use a large channel-lock pliers to work the levers on the calipers back and forth. Until you do that you won't get a solid pedal.
You likely still have another brake problem. The red light turned on for low fluid, the parking brake wasn't fully released, or there was an internal or external fluid leak that caused unequal pressures in the two hydraulic systems.
Tuesday, August 2nd, 2011 AT 1:27 AM