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Need Help! Rear Brake Light Stay On At Drive!
#1
I need help!!! My brake light stay ON when I put to "D".

Yes I drive a auto. Today I find out my brake light stay ON when I shift to Drive, but it work fine at Park or Reverse. I check everything today: fuse, bulbs, fog light mod back to stock, brake pedal sensor thingy and restart computer.... Still doesn't work!!! Brake light stay ON at "D" doesn't matter when the headlight is ON or OFF. I try everything I could think of, but still the same!!

Anyone experience that before?? Is it the auto shift locking mechanism acting up??
JMS US spec front lip, Rieger R-RX side skirts, Rieger R-RX rear apron, European rear bumper, European tail lights, RPMlabs grill, Painted side mirrors cover, H4 HID kit, Lamin-X yellow fogs, shorty antenna, Loder1899 replica rear spoiler, weathertech window delfector, Injen short ram air box, FC UDP pulley, FC 65mm TB, Focussport race header, Focussport flex, magnaflow hi-flow cat, MBRP catback, SCT Xcal2, ford racing spark plug wire, Tein S-tech, FK Damper kit, Eibach rear camber kit, Focussport strut bar, Painted valve cover, TeamDynamic pro race 1.2 17", Kumho SPT 205/45/17, Hawk HP, brembo blank rotors, Russell SS brakelines, Motul dot 5.1, Recaro replica seats on Recaro seat base, KKM shift surround, In-dash 7" DVD player, Tein Damper-chi doll!!
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#2
Hmm, on my car it was a leaky clutch cylinder when my e-brake light stayed on, but since you said ur driving an automagic? i honestly dont know what it could be??
My other ride is your Mom
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#3
Do u have ABS? Something could be wrong with that
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#4
Problem fixed!! umm...kind of.

I thought it was the ABS too, but no it was the cruise control. After looking into the focus repair manual electrial diagnosis section, I find out my cruise control module maybe having problem.
In the manual it acturally have a small section call "Stop lamp continuously ON"...LOL!!!! Few tests are needed to check. Unplug PCM, unplug ABS module and the cruise control. I didn't preform all tests except the cruise control since the brake/stop light stay ON at Drive and cruise control only active at Drive. I locate the cruise control, unplug the connector and try it..The brake light work normal~yeah!! Brake light work fine at drive now but no cruise control which I never use it anyway, better than pull over by police!
JMS US spec front lip, Rieger R-RX side skirts, Rieger R-RX rear apron, European rear bumper, European tail lights, RPMlabs grill, Painted side mirrors cover, H4 HID kit, Lamin-X yellow fogs, shorty antenna, Loder1899 replica rear spoiler, weathertech window delfector, Injen short ram air box, FC UDP pulley, FC 65mm TB, Focussport race header, Focussport flex, magnaflow hi-flow cat, MBRP catback, SCT Xcal2, ford racing spark plug wire, Tein S-tech, FK Damper kit, Eibach rear camber kit, Focussport strut bar, Painted valve cover, TeamDynamic pro race 1.2 17", Kumho SPT 205/45/17, Hawk HP, brembo blank rotors, Russell SS brakelines, Motul dot 5.1, Recaro replica seats on Recaro seat base, KKM shift surround, In-dash 7" DVD player, Tein Damper-chi doll!!
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