What is wrong with my tail light?

Asked by Mar 20, 2015 at 04:22 PM about the 2004 Ford F-150 XLT Ext. Cab LB

Question type: Maintenance & Repair

I have a 2004 f150. I am having a tail light
issue on the drivers side. All running lights
work. (Including drivers side) when I turn on
my hazards all lights work. My blinkers
work but it blinks really fast on the drivers
side. When my truck is in park and I press
the brake peddle both brakes work. But
when my truck is in drive the drivers side
brake light does not turn on. If my running
lights are on my drives side brake light will
turn off when the peddle is pushed. This
only happens when the truck is in drive, the
brake will turn on while in park. I have
replaced the bulb and I am still having the
same issue. What could the issue be?

1 Answer


The fast blinking light on one side indicates a burned out bulb normally. Sounds like you have a a short. You are going to need a multimeter to be begin checking voltages beginning at the brake pedal.

Your Answer

Ford F-150 Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,175 Great Deals out of 151,474 listings starting at $1,995
Used GMC Sierra 1500
877 Great Deals out of 59,609 listings starting at $1,980
Used Ford F-250 Super Duty
370 Great Deals out of 44,780 listings starting at $1,600
Used Toyota Tundra
558 Great Deals out of 37,746 listings starting at $1,500
Used Dodge Ram 1500
336 Great Deals out of 9,586 listings starting at $800
Used Toyota Tacoma
427 Great Deals out of 42,057 listings starting at $2,600
Used Ford Mustang
274 Great Deals out of 38,355 listings starting at $1,995
Used Ford F-350 Super Duty
414 Great Deals out of 25,417 listings starting at $3,900
Used Chevrolet Colorado
294 Great Deals out of 43,348 listings starting at $1,900
Used Nissan Titan
247 Great Deals out of 22,449 listings starting at $1,995
Used Chevrolet Silverado 2500HD
359 Great Deals out of 31,456 listings starting at $1,950
Used Ford Explorer
847 Great Deals out of 64,621 listings starting at $2,000
Used Chevrolet Tahoe
590 Great Deals out of 37,467 listings starting at $1,699

Used Cars For Sale

2018 Ford F-150 For Sale
42 Great Deals out of 140,782 listings starting at $19,500
2017 Ford F-150 For Sale
176 Great Deals out of 11,302 listings starting at $18,450
2016 Ford F-150 For Sale
192 Great Deals out of 8,257 listings starting at $14,500
2015 Ford F-150 For Sale
335 Great Deals out of 10,374 listings starting at $11,990
2014 Ford F-150 For Sale
530 Great Deals out of 12,861 listings starting at $8,991

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.