Interior dome light problem
Thread Starter
Newbie
Joined: Mar 2020
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C207
Interior dome light problem
I bought my car with aftermarket LED-s in only the front and the rear dome lights. I changed them back to normal W5W bulbs. The rear dome works, but the front just flashed once, and after then no response. I’ve checked the bulbs, all the fuses. Every function and switches and other lights are working perfectly on the front dome. So I disassembled and reassembled the dome, I found nothing.
Please help, where is the problem?
Please help, where is the problem?
Super Member
Joined: Aug 2004
Posts: 954
Likes: 245
E550 Coupe 2wd (2016)
Did you try the old bulbs in it? Do you have a multi-tester to check if power is actually getting to the socket? Are the contacts for the bulb damaged? Is it possible you pulled the connector/wire off inside?
One way or another you will be able to figure it out, you just need to dig more
One way or another you will be able to figure it out, you just need to dig more
Thread Starter
Newbie
Joined: Mar 2020
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C207
I’ve already tried all of the things you said 
There is no any voltage at the sockets. The connectors and cables are good. And as I mentioned, few days ago I disassembled the whole unit in pieces, and didn’t find anything unusual. The problem has to be somewhere else. Maybe can bus?
There is no any voltage at the sockets. The connectors and cables are good. And as I mentioned, few days ago I disassembled the whole unit in pieces, and didn’t find anything unusual. The problem has to be somewhere else. Maybe can bus?
Out Of Control!!
Joined: Jul 2003
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From: North Scottsdale, AZ
'71 Pinto
Check with AZN optics: https://mbworld.org/forums/private.p...newpm&u=154722
Super Member
Joined: Aug 2004
Posts: 954
Likes: 245
E550 Coupe 2wd (2016)
Can you trace the wire back very far? I had my dome off maybe a year ago for a different reason, but I think I recall a shell hiding all the buttons and what not. Normally I take stuff like that apart out of curiously, but I didn't and can't remember why. Probably because it was glued or something and I'd have to break it? So I was wondering if you took that apart to see the switches n stuff and trace the wire.
You should post pix too, so we can better help and for the next guy that has to root around in there.
You should post pix too, so we can better help and for the next guy that has to root around in there.
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Senior Member
Joined: Aug 2003
Posts: 497
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From: Ontario
2019 E450 Coupe 4Matic; 2018 Audi Q5; 2019 Toyota Corolla Hatchback
Did you check the bulb holders? The metal pieces inside the holder maybe damaged.
I damaged mine when I forced the led bulbs to the holders but the replacement bulb holders were not expensive from the stealership.
I damaged mine when I forced the led bulbs to the holders but the replacement bulb holders were not expensive from the stealership.
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Thread Starter
Newbie
Joined: Mar 2020
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C207
Thread Starter
Newbie
Joined: Mar 2020
Posts: 8
Likes: 0
C207
Can you trace the wire back very far? I had my dome off maybe a year ago for a different reason, but I think I recall a shell hiding all the buttons and what not. Normally I take stuff like that apart out of curiously, but I didn't and can't remember why. Probably because it was glued or something and I'd have to break it? So I was wondering if you took that apart to see the switches n stuff and trace the wire.
You should post pix too, so we can better help and for the next guy that has to root around in there.
You should post pix too, so we can better help and for the next guy that has to root around in there.
Yes, I will post some photos soon.
