Headlamp low beam bulb stays kn continuously whether or n...


Headlamp low beam bulb stays kn continuously whether or not the vehicle is on. Stays on even if the ground is disconnected from battery. How can I fix this? Mechanic's Assistant: Have you tested the battery with a voltmete...

Headlamp low beam bulb stays kn continuously whether or not the vehicle is on. Stays on even if the ground is disconnected from battery. How can I fix this? Mechanic's Assistant: Have you tested the battery with a voltmeter? And can you see if it's leaking or not? Battery is fine and the battery isnt leaking Mechanic's Assistant: What is the make/model/year of your car? 2013 Ford F150 Platinum 3.5 EcoBoost Mechanic's Assistant: Are you fixing your F150 yourself? What have you tried so far? Replaced bulbs and ballasts on both sides, same issue but worse cause the bulb wont turn off. Before it would turn after a couple days Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? Thats it

Automotive Expert
Hello, my name is \*\*\*\*\* \*\*\*\*\* I'm sorry to hear about problem. Ignore phone call prompt and there may be short delay between replies.

Okay no worries
Automotive Expert
It sounds like headlamp switch or body control module has failed. Unplug [headlight](/topics-headlight-ford/) switch to see if they shut off, if not replace. If so replace body control module. Here are also testing instructions and wire diagram for system from manual. Let me know if you have any questions, thanks. - [https://www.dropbox.com/s/7kh6nh7oqcc7swm/hl1.pdf?dl=0](https://www.dropbox.com/s/7kh6nh7oqcc7swm/hl1.pdf?dl=0) - [https://www.dropbox.com/s/stmezu48e45jn20/hl2.pdf?dl=0](https://www.dropbox.com/s/stmezu48e45jn20/hl2.pdf?dl=0)

When you switch off the headlight the driver side bulb is still on.
Automotive Expert
Passenger side works properly?
Automotive Expert
It sounds like the violet/orange wire is shorted to ground. Unplug the BCM to see if light shuts off if not folllow wire to find short or run a new wire. Let me know if you have questions, thanks.

Will do, thank you
Automotive Expert
I'm happy to help, keep me updated.

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