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  #1  
Old 09-16-2013, 02:30 AM
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Join Date: Mar 2010
Location: Freehold, NJ
Posts: 482
interior light does not come on when door opens

I have a 1980 300TD and recently the interior light doesn't come on when I open the drivers side door (never came on with passenger). The light works fine if I manually turn the switch on. The rear cargo area comes on when I open the rear doors. Where should I start to trouble shoot this issue?
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1979 Mercedes 300SD 314k
1988 Mercedes 560SEL (parts car)

2002 Toyota 4Runner
1950 Packard 8
2006 Ford Ranger 4x4 (manual)
2010 Chrysler Sebring Convertible

Previous German cars-
2001 Mercedes SL500
1983 Mercedes 300SD
2011 BMW 328i (manual)
2008 BMW 535xi (manual)
2006 BMW M3 (manual)
1980 Mercedes 300TD
2006 BMW 750i
1996 Mercedes E300D
1994 BMW 740i
2006 BMW 330xi (manual)
1999 E300DT Smoke silver/black 253k
2012 BMW 535i Xdrive M-Sport
1984 300TD-T 304k
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  #2  
Old 09-16-2013, 02:45 AM
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Join Date: Jul 2008
Posts: 3,740
Open the door and pop the little push switches out....replace them or if you have confidence in repairing stuff....they easily pop open and disassemble for cleaning....a little tricky to pish back together but not hard.....

They look like this

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  #3  
Old 09-16-2013, 02:50 AM
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Join Date: Feb 2012
Location: oakland
Posts: 930
i'd check the contact switches on the door. at 33 years old, if they're original they've seen a lot of use/are probably gunked up by now. the switches can be hard to remove because they're held in place by hidden tabs. you kind of have to pull the switch out a little and get something underneath it to push the tabs in (top and bottom).

Quote:
Originally Posted by turbozeke418 View Post
I have a 1980 300TD and recently the interior light doesn't come on when I open the drivers side door (never came on with passenger). The light works fine if I manually turn the switch on. The rear cargo area comes on when I open the rear doors. Where should I start to trouble shoot this issue?
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1981 NA 300D 310k miles
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  #4  
Old 09-16-2013, 03:03 AM
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Join Date: Jul 2008
Posts: 3,740
Here's a link to new ones....

Mercedes A 2018202110 Door Jamb Switch | Compare Prices
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  #5  
Old 09-16-2013, 03:11 AM
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Join Date: Mar 2010
Location: Freehold, NJ
Posts: 482
Awesome...thanks guys. Just to clarify...there is only one "switch" or contact point that would activate the lights when the door opens...and that would be the push switch pictured above??
__________________
1979 Mercedes 300SD 314k
1988 Mercedes 560SEL (parts car)

2002 Toyota 4Runner
1950 Packard 8
2006 Ford Ranger 4x4 (manual)
2010 Chrysler Sebring Convertible

Previous German cars-
2001 Mercedes SL500
1983 Mercedes 300SD
2011 BMW 328i (manual)
2008 BMW 535xi (manual)
2006 BMW M3 (manual)
1980 Mercedes 300TD
2006 BMW 750i
1996 Mercedes E300D
1994 BMW 740i
2006 BMW 330xi (manual)
1999 E300DT Smoke silver/black 253k
2012 BMW 535i Xdrive M-Sport
1984 300TD-T 304k
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  #6  
Old 09-17-2013, 04:36 PM
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Join Date: Nov 2012
Location: Mesa, Arizona
Posts: 1,717
Anyone have any suggestions on the rear dome light? I am 99 percent sure the hatch latch, but just want to be sure. Thank you all in advance!
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Current fleet:

1985 Mercedes-Benz 280TE - Current project and hopefully by mid May daily driver.

1985 Mercedes-Benz 300TDT - Rear ended 23 September 2016.

1979 Mercedes-Benz 300TD - Parted out.

1971 Volkswagen Sunroof Squareback with F.I. - in need of full restoration.

1971 Volkswagen Squareback automatic with F.I. - Waiting on logistics to get to Texas.
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  #7  
Old 09-18-2013, 12:22 AM
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Join Date: Mar 2010
Location: Freehold, NJ
Posts: 482
My new hella door switches came in and the light now comes on for the passenger door. Nothing for the drivers door still. Any know of any known areas where the wires go that might be disconnected or frayed?
__________________
1979 Mercedes 300SD 314k
1988 Mercedes 560SEL (parts car)

2002 Toyota 4Runner
1950 Packard 8
2006 Ford Ranger 4x4 (manual)
2010 Chrysler Sebring Convertible

Previous German cars-
2001 Mercedes SL500
1983 Mercedes 300SD
2011 BMW 328i (manual)
2008 BMW 535xi (manual)
2006 BMW M3 (manual)
1980 Mercedes 300TD
2006 BMW 750i
1996 Mercedes E300D
1994 BMW 740i
2006 BMW 330xi (manual)
1999 E300DT Smoke silver/black 253k
2012 BMW 535i Xdrive M-Sport
1984 300TD-T 304k
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