Why are the rear driver side turn signal and brake lights not working?

Tiny
SGIFFORD19
  • MEMBER
  • 2008 FORD EXPEDITION
  • 7.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 171,489 MILES
Fuses are still good. The odd thing is the white light works when I go in reverse and the red light works when locking/unlocking the vehicle using the remote.
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Wednesday, August 10th, 2022 AT 12:41 PM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

Chances are the light is a dual-element bulb. One of the elements will function with the parking lights and the other element is for the brakes or signals light.

Do me a favor, remove the bulb. To the best of my knowledge, it will be a 4157 part number on it. Switch it with the one on the opposite side to see if it works.

I attached a pic below showing what I mean by the dual-element.

Remove the bulb and check if that is the part number and let me know what you find.

Take care,

Joe

See pic below.
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Wednesday, August 10th, 2022 AT 1:00 PM

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