You’ve got to get canbus compatible or error free LEDs. (Or find someone who knows how to readapt for LEDs from filament - no dice so far).
The LEDs don’t draw enough current so the car shuts them off for safety in case the bulb is broken open. You’ll see like a 2-4V monitoring voltage until you replace with a higher current filament bulb or an LED with a resistor (error free or canbus).
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