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MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3567
Experience:  Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes
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My trailer lights are not working and no electricity is coming

Customer Question

My trailer lights are not working and no electricity is coming from the mercedes trailer light plug. I suspect the fuse.
JA: The mechanics can certainly shed some "light" on this -- sorry! Sometimes I can't help myself;-) Seriously, though, the mechanics are real masters when it comes to fixing things, and it would be my pleasure to put you in touch with the best one for this. Tell me a bit more about what's going on so he can help you best.
Customer: I need to change the fuse myself. No M dealer in the area. Can you point out the fuse(s) that allow power to flow from the mercedes factory light hitch?
JA: Are you hoping to fix this yourself?
Customer: My omly option is to fix it myself. in the middle of Idaho with no trailer lights and have determined the GL side of the equasion is the issue.
JA: Is there anything else the Mercedes Mechanic should be aware of about your Mercedes?
Customer: no
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Mercedes Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Mercedes
Expert:  Lou P. master tech replied 1 year ago.
Hello, what kind of lights does your trailer have? regular incandescent or led?
Customer: replied 1 year ago.
Regular. I found the fuse box under back seat and chart lists 6 fuses that operate the trailer hitch lights. 101 111 115 126 128 130. How will I know if one or more is blown?
Expert:  Lou P. master tech replied 1 year ago.
ok, if a fuse was blown it will have a black burn mark in the center where the small metal tang touches from side to side
Expert:  Lou P. master tech replied 1 year ago.
Expert:  Lou P. master tech replied 1 year ago.
there is a issue with the mercedes trailer lights, if they do not sense enough resistance then the plug will not be powered. what year is your mercedes and what model?