Rear Signal warning sign but signal still working
Thread Starter
Junior Member
Joined: Feb 2015
Posts: 50
Likes: 4
Mercedes c300 4matic 2009
Rear Signal warning sign but signal still working
Just yesterday when I was driving the car the rear right turn signal warning came up telling me it was not working. When I reached home I checked and it was still working, turned the car off then back on and the sign went away. But the next day same thing happened and the signal was still working. Does anyone know what this means? Is the signal not working for a split second and triggering the warning then working again? I have a pre facelift c300 with the LED turn signals.
Senior Member
Joined: Jun 2016
Posts: 462
Likes: 152
From: Panama City, FL
2020 C300, 2013 C250, 2000 Boxster S
I had the same problem a couple of months ago. I popped out the bulb and noticed the glass had a brownish tint. I suspect the bulb was probably on its last legs. Replaced the bulb and the message never re-appeared. I went ahead and replaced the bulbs on both sides since if one was failing then the other one is probably not far behind.
Last edited by alynch; Oct 22, 2016 at 08:46 PM.
MBWorld Fanatic!
Joined: Aug 2009
Posts: 1,134
Likes: 8
From: Charlotte, NC
2015 BMW M235i 6MT
Early signs of a melting connector. Check these two threads:
https://mbworld.org/forums/c-class-w...ghts-true.html
https://mbworld.org/forums/c-class-w...or-melted.html
https://mbworld.org/forums/c-class-w...ghts-true.html
https://mbworld.org/forums/c-class-w...or-melted.html
Member
Joined: Feb 2012
Posts: 162
Likes: 8
From: Oporto, Portugal
Mercedes C220 AMG Style
I had to change the right rear. The light output was pior as compared to the other side. And i even added another Wire from nearby negative to the bulb holder.
Did the trick!!
Did the trick!!
MBWorld Fanatic!
Joined: Aug 2009
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From: Charlotte, NC
2015 BMW M235i 6MT
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MBWorld Fanatic!
Joined: Aug 2009
Posts: 1,134
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From: Charlotte, NC
2015 BMW M235i 6MT
I had the recall done in 2014, and my plug started showing signs of melting a couple months ago, and last week, it completely melted and is now non-functional. I have parts on order to do the repair myself. I think they just replaced the old parts with the same old parts but didn't do anything to fix the issue. That's the impression I received from the two threads I posted, too.
Last edited by Richard2011; Oct 24, 2016 at 05:16 PM.
