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PFL LED rear turn signal inoperative

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Old Oct 30, 2020 | 12:21 PM
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The Machinist
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From: OBX NC
11’ C63 AMG; D2 Audi A8; 15’ Golf TDi; 97’ F350PSD; B6 Audi S4; D1 Audi V8; A2 VW GTi
PFL LED rear turn signal inoperative
As the subject says, my led rear turn signal on the left side has stopped working, but the incandescent amber bulb still does.

LEDs are wired in parallel with the amber incandescent bulb and I did verify power getting to the PCB where the LEDs are mounted. I suspect one of the driver chips have gone.

Does anyone have any ideas? Or am I looking for a set of new ones?

Part number

Exterior view
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Old Oct 30, 2020 | 03:30 PM
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2012 C63;1971 280SE 3.5(Sold);2023 EQS 450 SUV 4 Matic (Wife's)
Check that your grounds aren't burnt. They were too light a wire gauge on the PFL and your car may have subject to a recall on them.
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Old Oct 30, 2020 | 03:58 PM
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The Machinist
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From: OBX NC
11’ C63 AMG; D2 Audi A8; 15’ Golf TDi; 97’ F350PSD; B6 Audi S4; D1 Audi V8; A2 VW GTi
Originally Posted by Mort
Check that your grounds aren't burnt. They were too light a wire gauge on the PFL and your car may have subject to a recall on them.

The small gauge wire looked pretty good, no **** stains or evidence of magic smoke.

I’ll double check though. Time to dig out the power probe.
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