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Sidemarker error help

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Old Jul 31, 2022 | 05:54 PM
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2009 mercedes c300 4matic
Sidemarker error help

Hey i just changed over to clear sidemarker lights and now I have a sidemarker error for both of them. What happened? I did the ignition cycle and no luck and I find it odd that both of them are magically blown. any ideas?
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Old Jul 31, 2022 | 09:36 PM
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
Are the new side lights LED? LEDs not made specifically to avoid CANBUS errors will give a light fault in the instrument cluster.
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Old Jul 31, 2022 | 09:37 PM
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2009 mercedes c300 4matic
Actually it's the same bulbs.


I don't even remember removing the bulb to install the clear lenses.
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Old Jul 31, 2022 | 10:24 PM
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
If they’re not lighting, then maybe fuses??? Checking fuses is easier than trying new bulbs. Those W5W lamps are inexpensive but a bit of a PITA to get to.
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Old Jul 31, 2022 | 10:25 PM
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2009 mercedes c300 4matic
Does the bumper sidemarkers have their own separate fuse? If so would you happen to know which one?
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Old Aug 1, 2022 | 01:49 AM
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That’s a maybe. I’m not near my C250 to look at the diagram. If I find out, I’ll let you know.
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Old Aug 1, 2022 | 07:07 AM
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2009 mercedes c300 4matic
Originally Posted by Odd Piggy
That’s a maybe. I’m not near my C250 to look at the diagram. If I find out, I’ll let you know.

Great. Thanks
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Old Aug 1, 2022 | 09:17 AM
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Both were magically blown, replaced and all is well
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