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driver side headlight not working at all

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Old 09-14-2023, 07:22 PM
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W205 2015
driver side headlight not working at all

when the problem first started, smacking the headlight makes it turn on, but now smacking it does not work anymore

does anyone know what could be the problem? do you guys think it could be the bulb/ballast?

Old 09-14-2023, 07:59 PM
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This definitely looks like either the main (big one) ballast is faulty or maybe just the connector going to it was ever so slightly loose and now has come undone.
Old 09-15-2023, 01:19 PM
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2018 c300 s205
how you get the DRL to do the light up animation?
My DRL just fade on and off but the sequential mirror signals I have installed do similar light up sequence.
I would definitely check the connections at ballast first.
Old 09-15-2023, 06:49 PM
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PFL205.064 with M276.823 (Oil pump solenoid defeated)
Originally Posted by sidsidhu
how you get the DRL to do the light up animation?
My DRL just fade on and off but the sequential mirror signals I have installed do similar light up sequence.
I would definitely check the connections at ballast first.
Seems to be aftermarket, OP has a pfl but it looks like fl style headlights.
Old 09-16-2023, 03:23 PM
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Originally Posted by W205C43PFL
Seems to be aftermarket, OP has a pfl but it looks like fl style headlights.
could just be the aftermarket light itself crapping out then
Old 09-17-2023, 02:40 PM
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PFL205.064 with M276.823 (Oil pump solenoid defeated)
Originally Posted by sidsidhu
could just be the aftermarket light itself crapping out then
It depends on the vendor of the aftermarket light, maybe it required a special adapter or convertor to convert the connection and that part is loose/failed? Will need OP to help us out with that question.
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