08 FX2 Head Lamp Selector not working on Low Beam

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Old Mar 18, 2012 | 03:16 AM
  #1  
jl2112's Avatar
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From: San Antonio, TX
08 FX2 Head Lamp Selector not working on Low Beam

Seeing if anyone has any ideas. I have done no modifications and one minute everything is working and the next a problem. My low beams work when I select auto lamp but in the normal low beam selection I just get the same lights as the parking light selector turns on. All of the lights work its just the low beam selection that does not. I don't know if this is a common problem that would indicate a bad selector switch or a relay went bad for no reason. I am not sure how difficult trouble shooting will be for this but any help would be appreciated.
 
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Old Mar 18, 2012 | 08:46 AM
  #2  
SSCULLY's Avatar
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From: Under the flightpath of old ORD 22R
The last time I same this is was a burnt pin on the VSM ( Vehicle Security Module ).

https://www.f150online.com/forums/el...t-problem.html

The VSM is mounted to the rear wall behind the seat back in a SuperCab / SuperCrew. ( thread in the technical articles / how to forum on removing ).

In autolamp mode, the power for the parking lamps and headlamps is from the VSM.

Worth a check.
 
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