Hi.
If your parking brake is never used, and was applied prior to the problem occurring, most likely what has happened is the cables under the vehicle that actuate the parking brake have corroded in the sheath and are holding the rear brakes in the applied position. The pedal inside will come back to the disengaged position and keep the light off, but the brakes are still applied. Have this checked asap, it will wear the brakes rapidly, overheat the drums/rotors and cause excessive heat in the transmission fluid, as well as a large drop in mileage. Hope this was helpful, Doc
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Saturday, November 22nd, 2014 AT 7:14 PM