LED Trailer Issue
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Junior Member
Joined: Dec 2018
Posts: 63
Likes: 20
GL 550
LED Trailer Issue
So we just picked up this bad boy about 2 weeks ago....and the GL pulls it with ease!! Only problem is the LED lights on the trailer don't seem to be working correctly....the boat dealer says it's an issue on most Mercedes. I go to the dealer today for service, and they tell me I can buy a 7 pin adapter at Home Depot. Does that sounds right?? I'd rather have a factory Mercedes solution not a plug in adapter that I need to use every time.
Has anyone else had this issue, and what was your solution?
Last edited by Iceytys; Apr 18, 2019 at 09:12 AM.
MBWorld Fanatic!
Joined: Nov 2017
Posts: 1,218
Likes: 149
From: Bethesda, MD
2010 Mercedes GL450; 2000 Mercedes ML55 AMG; 2016 VW GLI SEL Stick!!!
So we just picked up this bad boy about 2 weeks ago....and the GL pulls it with ease!! Only problem is the LED lights on the trailer don't seem to be working correctly....the boat dealer says it's an issue on most Mercedes. I go to the dealer today for service, and they tell me I can buy a 7 pin adapter at Home Depot. Does that sounds right?? I'd rather have a factory Mercedes solution not a plug in adapter that I need to use every time.
Has anyone else had this issue, and what was your solution?
It works all the time with led lights on a trailer, although I do sometimes still get the error on the dash. But it works as it should.
There's another brand that people like too, i just don't remember which one it is.
MBWorld Fanatic!
Joined: May 2015
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From: Allentown, PA
'08 GL 320 CDI
Go to my post in this thread (there are plenty of others about this that can be found through searching, but I was able to find this one quickly). https://mbworld.org/forums/gl-class-...ng-lights.html
Member
Joined: Apr 2014
Posts: 177
Likes: 45
From: Florida
X166 GL550
If the LED lights of the trailer are not CANBUS you will either get a error message or the lights on the trailer will stay on (dimmed) or will flash and then go off. There are a lot of error canceler adapters available. You will have to add one canceler per light on the trailer. Sucks but that the way CANBUS system works 
