2011 C300 Interior Lights / Sunroof Intermittent Power
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2011 C300
2011 C300 Interior Lights / Sunroof Intermittent Power
I have a strange problem with my '11 C300. It is approximately 2 months out of warranty.
About 3 weeks ago I noticed the interior lights weren't working. I thought it was odd and that it was perhaps a fuse. Checked the fuse and it was good. I left it alone for a week to see if it would "fix itself." It didn't. On closer inspection I found there was actually no power to the roof of the car, excluding the rear parking sensor light. No lights, no sunroof, no electrochroamatic functions in the mirror. Sad!
I did some research and determined that the whole dome light control unit has to be replaced. It was an $1100 expense I did not want to bear.
Oddly enough, about a week ago it started working again. For about 2-3 days, then died again. This morning it was on when I went to work, and off when coming home from work.
Perhaps it's a loose wire, but where do I look to possibly correct it? Has anyone else experienced this phenomenon and if so how did you go about fixing it?
Thanks in advance!
About 3 weeks ago I noticed the interior lights weren't working. I thought it was odd and that it was perhaps a fuse. Checked the fuse and it was good. I left it alone for a week to see if it would "fix itself." It didn't. On closer inspection I found there was actually no power to the roof of the car, excluding the rear parking sensor light. No lights, no sunroof, no electrochroamatic functions in the mirror. Sad!
I did some research and determined that the whole dome light control unit has to be replaced. It was an $1100 expense I did not want to bear.
Oddly enough, about a week ago it started working again. For about 2-3 days, then died again. This morning it was on when I went to work, and off when coming home from work.
Perhaps it's a loose wire, but where do I look to possibly correct it? Has anyone else experienced this phenomenon and if so how did you go about fixing it?
Thanks in advance!
Member
Joined: Nov 2014
Posts: 222
Likes: 2
From: Everett, WA
2013 C250
open up the dome light assembly and check the connections, especially the one with the largest connectors (It has the most cable connected into it). Check also the cable on the right side of the connectors. Those two cables are the ones that's powering the domelight unit and sunroof I believe. I removed them one time during my V1 Hardwiring and the whole unit just shut off. Good luck 
Also, have u try to come to the dealership, *find a nice guy, the one who sold u the car perhaps* and beg for his/her understanding on your situation
Also, have u try to come to the dealership, *find a nice guy, the one who sold u the car perhaps* and beg for his/her understanding on your situation
