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  #1  
Old 10-10-2012, 12:33 PM
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Join Date: Aug 2009
Location: Saratoga Springs,NY
Posts: 21
89 560sl window relay question

I have a 89 560sl and both windows stopped working a couple of weeks ago. The fuses are good and I do not think both switches would go bad at exactly the same time. By reading past posts I have found that there is a window relay above the fuse panel behind the passenger side kick panel. I removed the panel. There appears to be two relays. One silver metal above fuse #20 and one with a brownish plastic cover a bit higher up above fuse #2. Can anyone tell me if the brownish plastic one is the window relay. If so (and now for the really dumb question) how do I remove it? Does it pull straight out?
Thanks all.

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  #2  
Old 10-10-2012, 04:36 PM
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Join Date: Aug 2009
Location: Saratoga Springs,NY
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I overcame my reluctance to just yank on parts and pulled the metal covered relay. I think that is the correct one. I cleaned the pins and reinserted it but that did not fix the problem. I will get a new relay and give that a try.
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  #3  
Old 10-10-2012, 06:03 PM
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Join Date: Oct 2008
Location: Phoenix, AZ
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There is a known problem with the stock fuses. The fuse link and ends are aluminum, while the holder in the car is brass. This can result in dis-similar metals corrosion when air and moisture are added to the environment, a whitish, non-conductive, powdery coating over the metal of the fuse.

You can go to your favorite auto parts store and get a small packet of terminal grease for 2 or 3 dollars at most. Then remove each fuse one at a time, buff the ends with a coarse cloth (non-abrasive) such as heavy denim or canvas. Coat the ends of the fuse with a THIN film of the grease and replace. Do this one at a time to keep from getting the wrong fuse in a circuit.

The grease will keep air and moisture away from the contact points, preventing future corrosion.

I'm not saying this is your problem, but everyone should do this as a preventative measure, especially if you live in an area with high humidity.

Scott
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  #4  
Old 10-10-2012, 06:15 PM
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Location: Saratoga Springs,NY
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Thanks, I did pull the fuses and clean up the ends with sandpaper and contact cleaner. I will get some terminal grease on my next trip to the parts store.
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  #5  
Old 10-15-2012, 01:00 PM
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Join Date: Aug 2009
Location: Saratoga Springs,NY
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The relay just arrived. I popped it in and the windows now work fine. My driving season is now extended. A happy ending.

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