M-Class (W164) 2006-2011: ML280CDI, ML320CDI, ML420CDI, ML350, ML500, ML550

Rear Brake Light Warning DIY Fix

Old 05-13-2016, 04:03 PM
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Wife's 2009 ML350 4Matic
Rear Brake Light Warning DIY Fix

Hey all. My wife has a 2009 ML350 4Matic and the rear brake light warning light kept coming on. I know many of us have had this problem and I realize there are a few fixes out there on the web but I wanted to add my 2 cents and hopefully save you more than that! I changed the bulb a couple of times and realized it wasn't a bulb issue. I removed the housing and there appeared to be a compromised or burnt area on the aluminum contact surface for the bulb. It is the small dark area in the photo in the shape of a spade.. I took a small piece of aluminum foil from the kitchen and wrapped it over the area, re-installed the bulb. Good as new and free of charge. I then put a little silicone over the joint where the lamp cover seats thinking perhaps some water had seeped in causing the damage. Just a theory. Anyhow, hope it helps.
For whatever reason, when I upload the photos, they are incorrectly rotated just FYI....
Attached Thumbnails Rear Brake Light Warning DIY Fix-ml-bulb-1.jpg   Rear Brake Light Warning DIY Fix-ml-bulb-2.jpg   Rear Brake Light Warning DIY Fix-ml-bulb-3.jpg   Rear Brake Light Warning DIY Fix-ml-bulb-4.jpg   Rear Brake Light Warning DIY Fix-ml-bulb-5.jpg  

Rear Brake Light Warning DIY Fix-ml-bulb-6.jpg  
SlimPickins is offline  
Old 05-15-2016, 04:22 PM
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thanks for posting that

do the 2009 have the rear taillights that leak also? was hoping mercedes had finally solved that issue
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