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Headlight LED Issue

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Old Jan 23, 2026 | 03:53 PM
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Jim Ma
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S 550, S65 Coupe
Headlight LED Issue
My '15 550 just developed a weird headlight issue. When the car is off and locked the passenger side headlight Led strip is staying on. I assume there is an issue with control module but wanted to see if anyone had a similar issue in the past.
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Old Jan 24, 2026 | 06:20 AM
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'15 S550, '10 E350 P1/P2, '02 ML320
Originally Posted by Jim Ma
My '15 550 just developed a weird headlight issue. When the car is off and locked the passenger side headlight Led strip is staying on. I assume there is an issue with control module but wanted to see if anyone had a similar issue in the past.
Perhaps the standing lamp is enabled?
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Old Jan 24, 2026 | 07:49 AM
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2020 S560 4matic. 2017 Z06 convertible.
Probably the module. Expensive. Good luck.
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Old Jan 24, 2026 | 03:58 PM
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It was the standing lamp. Must have hit the switch by accident. Thanks for the help and i feel kind of foolish not taking the time to check the manual. Thanks again
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Old Jan 24, 2026 | 04:14 PM
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2020 S560 4matic. 2017 Z06 convertible.
All good. If you don't ask, you won't learn
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Old Jan 24, 2026 | 04:23 PM
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2014 S63 2010 ML350 Bluetec 2009 SL550
Did that myself once, as many other S class owners also probably did. Its a strange feature for sure.
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Old Jan 24, 2026 | 04:34 PM
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Originally Posted by TripleDown
Did that myself once, as many other S class owners also probably did. Its a strange feature for sure.
Apparently it is useful in Europe showing what side is the driver side to other road users passing by.
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Old Jan 25, 2026 | 06:52 AM
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Originally Posted by W205C43PFL
Apparently it is useful in Europe showing what side is the driver side to other road users passing by.
We have here a lot of one way streets in crowded city's, so we can park on both sides of the street. This function is used to let the position lit to the street side.
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Old Jan 25, 2026 | 08:32 AM
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Originally Posted by trigital
We have here a lot of one way streets in crowded city's, so we can park on both sides of the street. This function is used to let the position lit to the street side.
Ah, I see.
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Old Jan 25, 2026 | 11:39 AM
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2010 E350 4Matic
Had that feature on our "59 pontons and every Mercedes since.
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Old Jan 25, 2026 | 03:53 PM
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Currently ‘2015 S550 4matic. Previously 03 E320, ‘06 S430, ‘08 S550 4matic
Originally Posted by Jim Ma
It was the standing lamp. Must have hit the switch by accident. Thanks for the help and i feel kind of foolish not taking the time to check the manual. Thanks again
As the saying goes…” There are no stupid questions”
However, it is also true that many stupid people ask questions.
Just to be safe…This is NOT directed at you Jim.
Glad it was a simple solution.
Be well
Chuck
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Old Jan 25, 2026 | 06:34 PM
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Interesting things you learn on here, I'd never heard of 'standing lights' before now ... :-)
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Old Jan 25, 2026 | 07:55 PM
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Originally Posted by Tom in Austin
Interesting things you learn on here, I'd never heard of 'standing lights' before now ... :-)
We like to call them parking lights on mbworld but apparently the official term is standing lights.
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