LED Tailight Brake Light Out
Thread Starter
Super Member
Joined: Nov 2014
Posts: 545
Likes: 230
From: Toronto & California
2015 ML400 4MATIC, 2016 C300 4MATIC, 2014 E350 4MATIC (Totaled), 2006 E350 (Sold)
LED Tailight Brake Light Out
Why????????? Hi! Have a 2010 ML350 with the led Tailights and one is out for the brake light and one has some dead leds has anyone gone to the dealer and received new ones because there defective? Pain. Why did they do this 
I've been told that it isn't covered under warranty. But still. Should be covered under goodwill of some sort. It's a well known problem
I've been told that it isn't covered under warranty. But still. Should be covered under goodwill of some sort. It's a well known problem
Newbie
Joined: Sep 2016
Posts: 8
Likes: 1
From: San Diego, CA
2009 ML63, 2009 E350
There is a by now well-known brake-light fault on 164 MLs. (I know its only well-known after it happens to you) One 12v wire goes through the lamp and is grounded only through the reflector socket housing. The fix is MB part 1648260007 ( about 15 bucks ) this part with instructions adds a ground wire from the socket directly to the wiring loom. Before when I replaced the bulb (which still looked and was good), corrosion on the socket was scraped-off only to build-up again and give a brake light fault. Supposedly, Mercedes was fixing this for free but you can do it yourself in 15min and not have to argue and leave your car all day. Hope this helps.
Thread Starter
Super Member
Joined: Nov 2014
Posts: 545
Likes: 230
From: Toronto & California
2015 ML400 4MATIC, 2016 C300 4MATIC, 2014 E350 4MATIC (Totaled), 2006 E350 (Sold)
There is a by now well-known brake-light fault on 164 MLs. (I know its only well-known after it happens to you) One 12v wire goes through the lamp and is grounded only through the reflector socket housing. The fix is MB part 1648260007 ( about 15 bucks ) this part with instructions adds a ground wire from the socket directly to the wiring loom. Before when I replaced the bulb (which still looked and was good), corrosion on the socket was scraped-off only to build-up again and give a brake light fault. Supposedly, Mercedes was fixing this for free but you can do it yourself in 15min and not have to argue and leave your car all day. Hope this helps.
Senior Member
Joined: Mar 2015
Posts: 347
Likes: 47
From: Brooklin, Ontario
JGC SRT, ML 550, GLB 250
There is a by now well-known brake-light fault on 164 MLs. (I know its only well-known after it happens to you) One 12v wire goes through the lamp and is grounded only through the reflector socket housing. The fix is MB part 1648260007 ( about 15 bucks ) this part with instructions adds a ground wire from the socket directly to the wiring loom. Before when I replaced the bulb (which still looked and was good)t, corrosion on the socket was scraped-off only to build-up again and give a brake light fault. Supposedly, Mercedes was fixing this for free but you can do it yourself in 15min and not have to argue and leave your car all day. Hope this helps.
