2014 F150 headlight issue
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4th Gear
Joined: Jul 2021
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2014 F150 headlight issue
Friend of mine has a 2014 FX4 and the headlights are being very weird. When the headlights are turned to on or auto they work just fine but the passenger side headlight is ALWAYS on. When the headlights are turned off, when auto is on but it’s daylight, and when the ignition is off it always stays on. We have to remove and replace fuse 15 in the fuse box under the hood any time we turn the headlights on or off. What could be the cause of this?
Tuned
Joined: Apr 2001
Posts: 467
Likes: 25
From: Central Callifornia
Factory HID lights?
I ask because after looking at the wiring book for 2014, the option would be a bad Body Control Module because that is where the "power" feed splits on both HID and standard lights.
With HID there is a constant battery feed to run the shutter solenoid.
My guess would be a pinched wire/harness near the light unit.
Hope this helps.
Good luck.
I ask because after looking at the wiring book for 2014, the option would be a bad Body Control Module because that is where the "power" feed splits on both HID and standard lights.
With HID there is a constant battery feed to run the shutter solenoid.
My guess would be a pinched wire/harness near the light unit.
Hope this helps.
Good luck.
Thread Starter
|
4th Gear
Joined: Jul 2021
Posts: 4
Likes: 0
Factory HID lights?
I ask because after looking at the wiring book for 2014, the option would be a bad Body Control Module because that is where the "power" feed splits on both HID and standard lights.
With HID there is a constant battery feed to run the shutter solenoid.
My guess would be a pinched wire/harness near the light unit.
Hope this helps.
Good luck.
I ask because after looking at the wiring book for 2014, the option would be a bad Body Control Module because that is where the "power" feed splits on both HID and standard lights.
With HID there is a constant battery feed to run the shutter solenoid.
My guess would be a pinched wire/harness near the light unit.
Hope this helps.
Good luck.
Lead Driver
Joined: Nov 2020
Posts: 7,128
Likes: 1,945
From: Sportsman's Paradise
The headlights on that truck are indeed computer controlled, would need to pull codes from ALL modules, particularly BCM and SCCM modules as both have functions for them. The code(s) stored are the starting point for diagnosis.
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maybelle'84
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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Jun 21, 2019 03:46 PM
