Left headlight, brake light and turn signal do not work?

2012 FORD F-150

170,000 MILES • 3.5L • V6 • TURBO • 4WD • AUTOMATIC

CALEBRILEY

MEMBER
1 POST

My left head light, rear brake light, and left rear turn signal aren’t working. The front left turn signal works, and flashes quickly. The left signal on the mirror also works. All rear running lights and turn signals, including the left side work. Is this a BCM issue? I’ve checked ground, bulbs and fuses.

Jun 25, 2023 at 1:13 PM

STRAILER

✓ASE Certified Mechanic
54,837 POSTS

Yep, the BCM controls these functions but if you want to be sure you should do a CAN scan which will give you code for the BCM, you can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

Here is how to replace the BCM, you can get a preprogrammed unit by searching Google or Ebay. Check out the images (below). Please let us know if you need anything else to get the problem fixed.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
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Jun 25, 2023 at 4:10 PM

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