A BOLT IN THE SHIFTING LINKAGE LOOSENS OVER TIME ON MANY FORD MODELS. OUR BOLT APPARENTLY LOOSENED & CAUSES SHIFTER TO BE IN A GREAT OTHER THAN WHAT IS INDICATED ON THE DASH. OUR VEHICLE INDICATED IT WAS IN THE ' PARK' POSITION, BUT WAS NOT. THE VEHICLE LATER ROLLED DOWN THE HILL & CAUSED NEARLY $1200 OF DAMAGE TO THE PASSENGER SIDE. FORD KNOWS OF THIS PROBLEM.