E-Class Coupe (C238) & Cabrio (A238) 2017 - E200, E220, E300, E350, E400, E450 [Coupes &Cabriolets]

Brake light tail light

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Old Aug 14, 2022 | 01:18 PM
  #1  
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E400
Brake light tail light

Can someone offer information on a repair for the brake light and tail light in the picture below? I done think this is fused but strange that both side are out.

Brake light and tail light on both sides are out. Showing message on dashboard.
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Old Aug 14, 2022 | 05:54 PM
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Don't ask me why, but that's how they designed it. (Excuse my arm blocking my plate)

Edit: Also, it looks like your trunk isn't fully closing. The body lines & lights aren't lined up correctly.


Last edited by blakers; Aug 14, 2022 at 05:56 PM. Reason: Adding context.
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Old Aug 14, 2022 | 06:08 PM
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If you look closely at the tail lights mounted to the trunk, you'll see where you'd expect to see brake lights...there aren't actually any lights at all. Just metal pieces designed to look like the actual brake lights mounted to the quarter panels.
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Old Aug 14, 2022 | 06:34 PM
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Originally Posted by blakers
If you look closely at the tail lights mounted to the trunk, you'll see where you'd expect to see brake lights...there aren't actually any lights at all. Just metal pieces designed to look like the actual brake lights mounted to the quarter panels.
Thank you for verifying the the lights in the truck on the bottom do not come on.
I picked it up from the dealer for Service B and two days later I saw an error message on my dash the reads Check Right tail light and Check Brake light. Which is weird.
I also can’t find the adjustment to make the truck close tighter. The 4 rubber bushing were adjusted all the way in. And it still looks open.
plus the light in the rear window is working

Last edited by rrene; Aug 14, 2022 at 06:39 PM.
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Old Aug 14, 2022 | 06:39 PM
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I removed the trunk-mounted lights while I was wrapping the car (trunk) and I got a bunch of those messages during a short drive. They all went away when I reinstalled them, plugged them back in, etc. No idea why you're getting them...they seem to be working based off of your pictures. Could be a firmware issue the dealer needs to fix?

If it's under warranty, I'd get them to look at the trunk too.

Originally Posted by rrene
Thank you for verifying the the lights in the truck on the bottom do not come on.
I picked it up from the dealer for Service B and two days later I saw an error message on my dash the reads Check Right tail light and Check Brake light. Which is weird.
I also can’t find the adjustment to make the truck close tighter. The 4 rubber bushing were adjusted all the way in. And it still looks open.
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Old Aug 14, 2022 | 06:42 PM
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Originally Posted by blakers
I removed the trunk-mounted lights while I was wrapping the car (trunk) and I got a bunch of those messages during a short drive. They all went away when I reinstalled them, plugged them back in, etc. No idea why you're getting them...they seem to be working based off of your pictures. Could be a firmware issue the dealer needs to fix?

If it's under warranty, I'd get them to look at the trunk too.
thank you. 92k miles and out of warranty. Great car! Still on the same brake pads and rotors
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Old Aug 14, 2022 | 06:48 PM
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God knows with MB what could be wrong. Do a search around the site...here's something I found based off a Google search:

https://mbworld.org/forums/c-class-w...rake-lamp.html
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Old Sep 8, 2022 | 04:14 PM
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Follow up to my intermitting brake light issue. The warning light came bake on. This time when i checked the right side crushed ice light on the truck was actually Not lit. When I popped the truck it came on for a second then went out again. Before when i called the dealer they said there was a connector that runs down one of the truck arms. But when i was troubleshooting it the first time there was no easy way to get to it. But now that i know i have a loose connection. I might have to find all the connections and check them.
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Old Sep 20, 2022 | 02:47 PM
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Now my truck will not open. keyfob checked, drivers door trunk switch wont work and the Vallet switch hasnt move from unlocked position.
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Old Sep 20, 2022 | 02:49 PM
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briefly saw the ice crystal out then when the trunk worked it came on the "off" again for a spilt second
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Old Oct 11, 2022 | 04:24 PM
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Still under warranty have dealer check it for definitive answer. Originates from rear SAM control unit proactively you can check connections @ tail lamp, CU, and ground points.




Attached Files
File Type: pdf
Rear SAM CU.pdf (891.6 KB, 110 views)
File Type: pdf
Trunk paneling.pdf (1.04 MB, 125 views)
File Type: pdf
Trunk rear center.pdf (377.0 KB, 109 views)
File Type: pdf
Trunk lid cover.pdf (497.9 KB, 102 views)
File Type: pdf
Wiring diagram.pdf (915.9 KB, 193 views)
File Type: pdf
Legend.pdf (189.7 KB, 90 views)
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