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LLY Guy
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11,949 Posts
Discussion Starter #1
Having an issue with the interior dome lights. When I open the door, use the key fob or turn the dome lights on manually using the dimmer override knob only the lights in the doors come on. The overheads stay off. The only time the overhead lights come on is when I hit the manual buttons beside each one. Then they remain on till I turn them off again. Bulbs are good, as I said the lights come on fine when I hit the button.
I have been running LED interior bulbs for a while. As in for years.
Can’t be a fuse because they all come on. Can’t be the door switch because the door pocket lights come on when the door opens.
 

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Premium Member
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17,875 Posts
Since you know that it can't be a fuse, don't bother checking them. ;)
I'd ignore checking all the TBC fuses, including the TBC 2C fuse.
I don't have the schematic in front of me to help tell you which other fuses to not bother checking, but I think one might be CTSY.

Sorry. It's been a while since I had a truck with those symptoms.
 

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LLY Guy
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11,949 Posts
Discussion Starter #3
Anything off the top of your head on where to start? Kinda seems like a BCM issue of some sort.
No other symptoms or problems. They worked and then they didn’t. No dead batteries, no jump starts, no water intrusion, nothing.
Only thing I did was change the blend door actuators for the driver/passenger/outdoor air dampers last week. But nothing else was messed with. And the lights worked when I was done.
 

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LLY Guy
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11,949 Posts
Discussion Starter #4
Anyone?
 

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Administrator
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16,038 Posts
Try disconnecting the Positive and Negative battery cables and touching them together for 10-15 seconds then reinstall them back onto the batteries
 

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LLY Guy
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11,949 Posts
Discussion Starter #6
I’ll try that.
One more thing suddenly not working. The reverse lights. Taillights, headlights, everything else is normal.
 

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Premium Member
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17,875 Posts
Check every fuse labeled TBC...TBC2A, TBC2B, etc...
 

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LLY Guy
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11,949 Posts
Discussion Starter #8
That was it, one of the TBC fuses in the fuse box under the dash on the drivers side. 15A. All fixed for now, looking into what took the fuse out.
 
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