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  #1  
Old 10-05-2004, 08:30 AM
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Fasten Seat Belt Light Comes on Intermittently

Sometimes when driving, the "fsten seat belt light" comes on for about a minute or so. This is regarding my '79 300SD. Am I getting a power surge or something? Is there some sort of sensor to be replaced? It doesn't come on all the time. Usually after about 5-10 minutes and may come on twice in a 20 minute span.
Thanks
David

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Old 10-05-2004, 01:57 PM
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Has anyone had anything similar to this happen to their car?
Thanks
David
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  #3  
Old 10-05-2004, 02:22 PM
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I am currently having the same problem with my '83 300D. I even had a mechanic look at it and he tried several things, but I still have the problem. I am very interested in the responses this thread receives.
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  #4  
Old 10-05-2004, 02:39 PM
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Join Date: Oct 2004
Location: Gaylord, MI
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seat belt light

I've also had this problem, I noticed that if you unlatch the belt holder and then resnap it into place the light goes off?. that is a possible starting point.
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  #5  
Old 10-05-2004, 07:41 PM
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Do you have something weighty in the passenger seat?

Intermittant problems are challenging. Start learning the wiring diagram and testing on the fly.
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  #6  
Old 10-05-2004, 11:03 PM
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Location: around Charlotte NC
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loose connection?

In my car the seatbelt light sometimes comes on also. I wiggle the female end on the bar that it slides along. I suspect the light grounds through that bar. There may be some corrosion on it over time causing an occassional poor connection.

Chuck
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  #7  
Old 10-05-2004, 11:27 PM
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I had the same problem. After much studying of wiring diagrams and testing and troubleshooting, it occurred to me that I do not need a light to tell me if my seat belt is fastened. So I removed the bulb, and I do not have that problem any more.

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