2003 Ford Crown Victoria 03 Crown Vic P71 Brake Lights Not

Tiny
CONCRETEMAN322
  • MEMBER
  • 2003 FORD CROWN VICTORIA
  • V8
  • 2WD
  • AUTOMATIC
  • 82,000 MILES
03 CVPI brake lights just went out. The deck brake light still work however the rear lights do not. Tail lights work (with lights on) turn signals work fine, all fuses are good. All bulbs are good. 12v at the switch off the pedal. No broken wires in the trunk or along the drivers side all the way to the harness connector under the dash. Any ideas?
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Thursday, June 12th, 2008 AT 8:54 PM

10 Replies

Tiny
BMRFIXIT
  • EXPERT
Recheck brake light bulb and if all OK
possible bad multifunction - combination - switch

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Thursday, June 12th, 2008 AT 9:28 PM
Tiny
CONCRETEMAN322
  • MEMBER
Is that one of the brake light switchs at the pedal?
I thought that one was for the gear selector from park.
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Thursday, June 12th, 2008 AT 9:32 PM
Tiny
BMRFIXIT
  • EXPERT
No if that was not working then you wouldn't have mid brake light and will not be able to move the selector shifter
again should recheck the bulbs
brake light power goes through the multifunction switch before it get to the rear brake light
if bulbs OK wiring OK check if power entering and leaving the multifunction switch
multifunction switch is the same switch that control the signals and 4 way flasher wipers and all
try 4 way flasher on and then step on the brakes

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Friday, June 13th, 2008 AT 5:58 AM
Tiny
CONCRETEMAN322
  • MEMBER
I appreciate your help, I'm not real familiar with vehicle electronics. Do you know where that switch is located on this vehicle? I will check it today, replace if needed. Thank you again.
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Friday, June 13th, 2008 AT 8:21 AM
Tiny
CONCRETEMAN322
  • MEMBER
Just checking, is the switch that you are talking about the turn signal, wiper control switch on the cloumn?
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Friday, June 13th, 2008 AT 8:23 AM
Tiny
CONCRETEMAN322
  • MEMBER
Found out what you were talking about, only had to read your answer again. Turned on hazard lights pushed brake pedal and the hazards kept flashing, are they supposed to stop flashing? No other issues with the turn signals, hi/lo beam or wipers. Is there any tests, that can be done besides replacement to determine if it is bad? Thank you
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Friday, June 13th, 2008 AT 9:11 AM
Tiny
BMRFIXIT
  • EXPERT
Check if you have power going in and out the switch when you have the brake on
if in and no out then the switch is bad


http://www.2carpros.com/forum/automotive_pictures/99387_ford_multy_1.jpg



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Friday, June 13th, 2008 AT 5:09 PM
Tiny
CONCRETEMAN322
  • MEMBER
No out, replaced mfs easy job thought it would be more difficult. Anyway still have the same problem. I am thinking that it may have something to do with the Police package wiring, since this car had the stealth mode (black out the brake lights except the deck, all equipment has been removed) and there may be an issue there maybe a grounded wire. There is power coming out of the MFS and power at the fuse from there no power where they run along driver kick panel. Has to be there somewhere, Back fed wire from trunk to kick panel and no problems there so it's under the dash somewhere. Thanks
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Friday, June 13th, 2008 AT 5:34 PM
Tiny
BMRFIXIT
  • EXPERT
Police package !
Its all new game man

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Friday, June 13th, 2008 AT 7:46 PM
Tiny
CONCRETEMAN322
  • MEMBER
Thanks for your help, If you happen to come across the same problem let me know if a fix was found. I would appreciate it. Thanks again
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Sunday, June 15th, 2008 AT 6:10 PM

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