Map Light Electrical Issue

[engeeoh01]

Hello 5th Gen Owners,

I have a bit of an issue hopefully someone can help me with...

I have a ‘17 with all incandescent bulbs replaced with LEDs. The LEDs have been installed for a little over a year. No problems until recently...

Passenger side trunk light starts to flicker, then powers up at 50% brightness.
As a temporary solution until i could get the defective light replaced, I swapped both trunk lights with a different set of LEDs. Both LEDs power on at 100% brightness, no issues.

A week later, all the lights inside the cabin do not light up. Found the problem to be the 10A dome fuse under the hood. Replaced the fuse, open the driver door and lights immediately go out. Dome fuse blown again.

Now i’m thinking maybe the LEDs i installed in the trunk is putting too much stress on the electrical system for the interior lights.

Once the replacement set of LEDs arrived, i switch the trunk LEDs back to the original ones, replaced the 10A fuse and now everything lights up except the passenger map light.

Things i tried:

- Swapping driver side LED to passenger side

- Turning LED 180* (Polarity)

- Adjusting the metal terminals that contact the LED, thinking they weren’t making a solid connection.

i’m thinking I may have fried a circuit on the upper console and may have to replace the map light/home link cluster? not really sure what to do now as far as diagnostics....

Any help would be greatly appreciated! Thank you!


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[mrblah]

you probably have a short somewhere. Did you install anything that required splicing into the car's wiring harness (lightbars, alarms, speakers, amps, etc) or running wires into area's that can be pinched or damaged? Wires that have been hacked into can corrode or fray overtime if the installer doesn't know what they are doing.

Anyways get a volt meter, and test it at the light socket for power, and then at the overhead console connector, and keep going back til you find the problem.

I highly doubt LED's by themselves are the cause of your problems b/c they don't draw enough power to overload anything (they draw less than 1/10th of your OEM bulbs). Then again, weirder things have happened.

 

[engeeoh01]

you probably have a short somewhere. Did you install anything that required splicing into the car's wiring harness (lightbars, alarms, speakers, amps, etc) or running wires into area's that can be pinched or damaged? Wires that have been hacked into can corrode or fray overtime if the installer doesn't know what they are doing.

Anyways get a volt meter, and test it at the light socket for power, and then at the overhead console connector, and keep going back til you find the problem.

I highly doubt LED's by themselves are the cause of your problems b/c they don't draw enough power to overload anything (they draw less than 1/10th of your OEM bulbs). Then again, weirder things have happened.

The truck is pretty much stock except the fog lights which were t-tapped into the mirror switch and window de-icer switch.

Do i still need to diagnose with a multi-meter if i’ve already determined that the light socket has no power? I’ve swapped a working LED into the passenger light socket and nothing turns on...


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[bass75]

Did you ever figure out what the problem was ? I am having the same exact issue and I can’t figure it out


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[engeeoh01]

the dealer replaced the entire map light/crawl control panel and that solved the issue. Not sure what or where the exact issue was…


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