2004 - 2008 F-150

2004 F150 Headlight Beam staying on

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  #16  
Old 03-22-2019, 01:02 PM
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Originally Posted by Henderso582


mfs?
Multi-function switch. The turn signal stalk.
 
  #17  
Old 03-22-2019, 01:04 PM
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Originally Posted by SoonerTruck
Multi-function switch. The turn signal stalk.
Is there a way to check and see if that’s the problem before I try to fix it?
 
  #18  
Old 03-22-2019, 01:51 PM
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Drop the steering column cover and check the connector. Using the tilt wheel can loosen it.

As I asked before, do the other functions work - turn signals, etc.?
 
  #19  
Old 03-22-2019, 02:13 PM
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Originally Posted by glc
Drop the steering column cover and check the connector. Using the tilt wheel can loosen it.

As I asked before, do the other functions work - turn signals, etc.?
Yes all other functions work. Just the headlights
 
  #20  
Old 03-22-2019, 07:30 PM
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Turn your headlights on, and then try turning the high beams on and off. See if you hear the relays latching. It should sound like a click. The click should be coming from the fuse box.

If there is clicking coming from the relay, then it is not the MFS (multi-function stalk).
 
  #21  
Old 03-22-2019, 10:28 PM
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Originally Posted by ManualF150
Turn your headlights on, and then try turning the high beams on and off. See if you hear the relays latching. It should sound like a click. The click should be coming from the fuse box.

If there is clicking coming from the relay, then it is not the MFS (multi-function stalk).
There is definitely a loud click. Are the relays bad? && I’ve also changed the relays around and none of them are working in that one spot. However I took the relay out and tried to turn the bright lights on and there was no click at all
 

Last edited by Henderso582; 03-23-2019 at 12:00 AM.
  #22  
Old 03-23-2019, 11:18 PM
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Originally Posted by Henderso582
I have replaced my fog lights with led pods and they worked great with my headlights for about 3 weeks. Since then, my high beams are stuck on and the only way I have light is if I turn just my fog lights on. I have checked fuse and it’s good. Any other suggestions?

Try removing all of the aftermarket LED products, and installing OEM halogen lamps. Then try to diagnose it.

Sometimes it's those aftermarket parts.

We know that when you activate the multifunction switch, the relay clicks. That's good. Now we have isolated the problem as being from the relay, to the headlamp.

Have you actually pulled your headlights out? Are they burnt out? Look at the wiring harness connecting the lamp. Is that burnt out? Check the wiring from the relay to the headlamp.
 
  #23  
Old 03-24-2019, 01:33 AM
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Originally Posted by Fifty150
Try removing all of the aftermarket LED products, and installing OEM halogen lamps. Then try to diagnose it.

Sometimes it's those aftermarket parts.

We know that when you activate the multifunction switch, the relay clicks. That's good. Now we have isolated the problem as being from the relay, to the headlamp.

Have you actually pulled your headlights out? Are they burnt out? Look at the wiring harness connecting the lamp. Is that burnt out? Check the wiring from the relay to the headlamp.
Well I went and bought some regular headlight bulbs and they worked perfect. I guess I should’ve just checked to see if both of the headlights went out at the same time or not! Thanks all of y’all for your help!!
 
  #24  
Old 03-24-2019, 06:12 PM
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Originally Posted by Henderso582


Well I went and bought some regular headlight bulbs and they worked perfect.

Glad that it worked and now you have lights.
 



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