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I got a notification on my dashboard last week to "Check The Right Front Parking Lamp". I can see it barely try to turn on then just wont turn off. It is driving me insane. I do not want to replace the headlight as I know those cost an arm and a leg. Anyone know how to deal with this? No it is not on the left-right parking mode. It is only on auto.
Last edited by PJurel; Oct 5, 2025 at 06:06 PM.
Reason: More details.
Did it start after rain or car wash? They could have had some water incursion, or a ballast go bad. The early lights will short smeties when exposed to water or excessive condensation.
Check the basics first.
It’s fairly common issue, though yours is a slight variation. This seems to be one of the few nagging issues with these cars.
You may need to check it with XENTRY instead of throwing parts at the problem and getting time sucked into component level diagnostics.
Yes, I have had trouble with this headlight before. I had an issue where the turn signal just wouldn't turn off. It wouldn't click inside where the green arrow would turn on and off, but the outside lamp for the front right turn singal was just constantly lit. I had that repaired, and there is a new headlight control unit on it now - OEM and programmed by Mercedes themselves.
Swap modules from side to side to see if it's the module or headlight. I've gone through this a few times. Modules did not need to be programmed until early 2015.
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