Rear brake light function not working

front still ok ???? U don't have brake light's on the front of the vehicle .Which brake light's ? center high mounted , right , left ???? All of them don't work ? Fuse - brake lamp switch , rear electronic module . The brake light switch is a input to the rear electronic module ,the rear electronic module turns on the brake lamps .
free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. , year , make , model an engine size. Under system click on lighting , then under subsystem click on turn signal lamps . Click the search button then the blue link . Look on the right side of the first diagram . See the brake pedal position switch , fuse at the top an rear electronic module at the bottom . Second diagram show's rear electronic control module

IS there front park lights? Sounds as if the multi-function switch is defective. The brake lights/park lights to rear run through this switch as well as the signals. ( common problem )

I have the same problem few days ago, and still didn't find any solution. Can any one please help?????18

Does the left brake light work? (only relevant if your signal and brake light are on a double element bulb in the same lamp assembly). Not relevant if you have an amber t/s light separate from the brake light. If the t/s and brake are in the same lamp housing and the brake light works the wiring is ok and the turn signal switch needs to be checked. If neither work a wire or connector is open circuited; or the ground for the lamp socket is not made. Hope this helps.

u have a short loose ground or power wire check all bulb sockets ur head light switch can be bad also

Sounds like maybe a bad turn signal switch. If the brake and turn signal use the same bulb than the turn signal switch will interrupt the brake signal and supply a turn signal to the bulb. Usually you can wiggle the switch while holding the brake pedal down and get them to intermittently work. If that happens than for sure the switch has failed.

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The ford explorer sport track. Will have a short either at the plug of the multi-function switch or 6 inches down where the column bends the wires during tilt.

Are the rear bulbs OK?
Is the ground good at the rear?are the sockets good?
Are there tail lights and a license plate light?then the ground is OK.
All the things that you say do not work go through the signal light switch....it may need replacing.
First make sure the bulbs and fuses are OK and power is getting to the signal light switch and to the brake light switch.
Nice car!

Bad earth connection.Clean or replce wire.

Are your hazard lights and/or reverse lights working? I can't remember which ties in with your brake lights but one of them do.