sounds like a brake light switch problem to me. the switch enables you to move your shifter when you put on your brake. If that's the problem you'll have to have it replaced. I can't get you a price if you want one I'm a ford tech.
Anyone in Middle TN wanna join Southern Custom Car Club hit me up!05 black focus zx3, 17 inch rpm wheels, custom 2.25" catback exhaust with silverline muffler, white led grille lights, apc blue bulbs, silverstar headlight bulbs, strut tower brace (front and rear), focussport tru flo cold air intake. Invader carbon fiber hood, auto gage 5inch tach w/shift light, diamond plate floor mats, blue interior leds, apc shift knob, rmk speed racing seats w/4 point harnesses, cross drilled rotors, tein s-tech lowering spring, next project is all motor