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  #1  
Old 05-23-2003, 04:32 PM
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Cool dome light doesnt work when opening from driver side door.

1995 E420

I have noticed that my dome light doesnt work when i open from driver side door. I have check the door switch it doesnt get any current or voltage reading on multimeter. But light works when i use passenger side door. I have also check all fuses.

any suggestions on how to fix this?

Regards
-Kamal
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Kamal Atwal
2005 Triumph Bonneville T100 (Black/white) [Sold]
2007 GL450 (Dersert Silver)
2009 Toyota Corolla (Metallic Silver)
2002 Tundra V8 - 2WD (Desert Sand)
1995 MB E420 (Silver Smoke) [crashed, now resting in peace at Silverstar Recycling Center]
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  #2  
Old 05-23-2003, 04:46 PM
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For the 300e models, we are advised to first check out the seatbelt warning relay, which is located behind the instrument cluster in the dash. (There are threads discussing this.) I don't know if anything changed in the 320/420 model updates. Good luck.
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  #3  
Old 05-23-2003, 04:48 PM
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My humble "guess" is that you should pull the door switch, test for continuity through the switch, and pray it's the switch (which is easy to replace versus looking for a bad wire connector.)
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  #4  
Old 05-30-2003, 03:07 PM
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I checked the door switch by swaping with right front door. switch works but the left front door does not read any current.
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Kamal Atwal
2005 Triumph Bonneville T100 (Black/white) [Sold]
2007 GL450 (Dersert Silver)
2009 Toyota Corolla (Metallic Silver)
2002 Tundra V8 - 2WD (Desert Sand)
1995 MB E420 (Silver Smoke) [crashed, now resting in peace at Silverstar Recycling Center]
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  #5  
Old 05-30-2003, 05:06 PM
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Same problem, though I do have current at the switch.
Just got my seatbelt relay in the mail.
I'll let you know how it goes.
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1986 300E 5-Speed 240k mi.
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  #6  
Old 05-30-2003, 07:26 PM
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Replacement procedure here:

http://diesel.web1000.com/5/

Website is temperamental, hopefully it works for you

If you click on it and get some weird search page, try copying and pasting the URL.

Last edited by speedy300Dturbo; 05-31-2003 at 04:53 AM.
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  #7  
Old 08-01-2003, 06:50 PM
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I recenlty install seat belt warning relay. Easy task after getting the input from forum. it took me about 45 mins. later editions have enough slack in the speedometer cable so i didnt had to disconnect any of cable in back of instrument panel.

thanks
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Kamal Atwal
2005 Triumph Bonneville T100 (Black/white) [Sold]
2007 GL450 (Dersert Silver)
2009 Toyota Corolla (Metallic Silver)
2002 Tundra V8 - 2WD (Desert Sand)
1995 MB E420 (Silver Smoke) [crashed, now resting in peace at Silverstar Recycling Center]

Last edited by KAMAL; 08-01-2003 at 08:26 PM.
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  #8  
Old 08-01-2003, 08:00 PM
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Did you replace it or fix the old one.

On mine, I found some of the "metal" on the circuit board burnt out. Soldering a jumper wire fixed mine.

As a matter of fact, I've now changed my buzzer to a chime.
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  #9  
Old 08-01-2003, 08:07 PM
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I replaced it with new one. I crack open the old one to see what was wrong. I saw the same thing as your, burnt PCB curcuit.
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Kamal Atwal
2005 Triumph Bonneville T100 (Black/white) [Sold]
2007 GL450 (Dersert Silver)
2009 Toyota Corolla (Metallic Silver)
2002 Tundra V8 - 2WD (Desert Sand)
1995 MB E420 (Silver Smoke) [crashed, now resting in peace at Silverstar Recycling Center]
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  #10  
Old 08-01-2003, 08:14 PM
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So then it is easily fixable.

Did you actually get the whole relay out of your car? It seemed impossible to me, so I simply used 2 butter knives to get the pcb board out of the old relay box then I slid the new one in.
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  #11  
Old 08-01-2003, 08:22 PM
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I took out complete bracket that hold two relays. Once the bracket is out. thereafter it is piece of cake. i had hard time unpluging the socket out of relay. But i had to wrestle with it. In this process i droped on the nut behind the dash. I didn't bother to put that back. Now only one support hold the relay.
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Kamal Atwal
2005 Triumph Bonneville T100 (Black/white) [Sold]
2007 GL450 (Dersert Silver)
2009 Toyota Corolla (Metallic Silver)
2002 Tundra V8 - 2WD (Desert Sand)
1995 MB E420 (Silver Smoke) [crashed, now resting in peace at Silverstar Recycling Center]
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  #12  
Old 08-01-2003, 08:40 PM
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Yea, the plug takes a bit of work to take off and put in. But how did you get the bracket out? There is no room to work.
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  #13  
Old 08-01-2003, 09:05 PM
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Location: Elk Grove, CA
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need a long extension and 10mm socket to open the nut in back. other one i used 8mm small wrench.
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Kamal Atwal
2005 Triumph Bonneville T100 (Black/white) [Sold]
2007 GL450 (Dersert Silver)
2009 Toyota Corolla (Metallic Silver)
2002 Tundra V8 - 2WD (Desert Sand)
1995 MB E420 (Silver Smoke) [crashed, now resting in peace at Silverstar Recycling Center]
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  #14  
Old 08-26-2003, 01:49 AM
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Kamal & wjm,
I'd appreciate a little help since I have been unable to access Speedy's website with his photos. I thought pulling the cluster would be the hard part, but with the MB tool it was really easy. Now, I see all these relays on the right side. I see (1) one goldish "nut" next to the speedo cable, screwed into the body & holding a piece of metal which holds a black plastic "thing" with two sets of connectors--is this the 8mm requiring the small wrench?? and (2) a bolt into the back on the firewall holding I don't know what- is this what needs the 10mm & extension??. Is there anything else to remove?? The relays to the far right are not involved?? (PS-what are they?) A brief explanation how to get to the villanous relay would be much appreciated--I really hate getting into a dark car at nite. Thanks so much.
Rich

Last edited by richard28; 08-26-2003 at 01:58 AM.
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  #15  
Old 08-26-2003, 01:58 AM
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Rich,

What model/year you have?

I never took out the entire relay. I simply undid one hex screw with a small rachet head on a hand driver. Then using 2 butter knives (or flathead screwdrivers), I squeezed open the relay cover (top and bottom) and removed the inner circuitry.

First remove screw on left side, and unplug. Once you get the butterknives into the top and bottom of the relay, grab the inners with some needle-nose pliers. Note how it came out. Then put and snap the new one in.
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