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  #1  
Old 11-30-2010, 05:09 PM
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Location: Hanahan, SC
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Dome Light

My front dome light doesn't come on when the door is opened. If I move the switch manually, the light comes on so the bulb is good. Rear works fine with opening and closing of the door. Any ideas appreciated.

Thanks,
Harry

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  #2  
Old 11-30-2010, 05:24 PM
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What year & model car??

Does it work from the passenger side?
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  #3  
Old 11-30-2010, 05:45 PM
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dome light

Sorry about that. Its an 84 300D. Neither door will turn the light on. The light comes on if i manually turn the switch to the front or rear. Center position, the light is off.

Thanks,
Harry
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  #4  
Old 12-03-2010, 07:58 AM
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dome light

Can anyone help with my dome light problem. Front doesnt come on when either door is opened, but it works when operarting manually with the switch.
84 300DT.
Thanks,
Harry
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  #5  
Old 12-03-2010, 08:10 AM
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Each door switch sends a ground to the dome lamp & also to the lights in the bottom of each door.

Do the lights in the doors come on?

Testing would be done at dome lamp with volt meter.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
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  #6  
Old 12-03-2010, 10:29 AM
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Join Date: Nov 2010
Location: Hanahan, SC
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Dome light

I dont have any lights in my doors, front or rear. The rear light comes on when the rear door is opened. Could both front door switches be bad or could one bad one cause this problem? Thanks for your replies.

Harry
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  #7  
Old 12-03-2010, 12:23 PM
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Join Date: Nov 2010
Location: Hanahan, SC
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dome light

The lamp is working when operating the dome switch manually. I pulled the door switches. No voltage. Whats next??

Thanks,
Harry
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  #8  
Old 12-03-2010, 12:54 PM
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Location: Hanahan, SC
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dome light

I made an error in my last post. I DO have voltage. It pegs the meter when set on 10v. On 50v setting I am guessing maybe 12V. I also have continuity on the switch itself disconnected on all positions; that is pushed slowly in and let slowly out continuity is present with no fluctuations. I would have thought pushed all the way in ,I would have no continuity. All replies appreciated.

Thanks,
Harry
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  #9  
Old 12-03-2010, 12:58 PM
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Join Date: Nov 2010
Location: Hanahan, SC
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dome light

Sorry guys. WRONG again. I discovered i had a bad meter. I have continuity on the switch with the button out. When I push it in..no continuity. I'm thinking dome light switch.

Thanks,
Harry
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  #10  
Old 12-06-2010, 10:01 AM
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Join Date: Nov 2010
Location: Hanahan, SC
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dome light

My dome light issue has been resolved. I pulled both door pillar switches and cleaned the contacts with sandpaper and presto, everything works now.Many thanks for all the replies. Maybe someone else will find my solution helpful.

Thanks,
Harry

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