On demand lights not working but fuse is good

2015 FORD MUSTANG
42,200 MILES • 3.7L • 6 CYL • 2WD • AUTOMATIC
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KENT THORNELL
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  • 12 POSTS
The map, vanity. glove box and trunk lights do not work but the fuse (# 1 10 amp) is good. The map lights do turn on when the door is opened but cannot be turned on when door is closed. All interior fuses located in passenger foot well are intact. Is there another fuse that I should check or something else?
Feb 2, 2019 at 9:10 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good morning,

All those functions are controlled by the body control module. The module looks for inputs from the door switches and headlight switch. Once those inputs are found, it will turn on those lights.

You need an advanced scan tool to monitor the module, check for codes set and see if it is getting the proper signals that it needs to do its job.

It is located in the trunk area behind the right side panel by the quarter panel.

Roy

Feb 3, 2019 at 2:27 AM
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KENT THORNELL
  • MEMBER
  • 12 POSTS
Thank you very much Roy. I will follow up and post what I find. Kent
Feb 3, 2019 at 11:45 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
You are welcome.

Always glad to help.

Roy
Feb 3, 2019 at 1:44 PM
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