Author Topic: w108 280 SE sedan 1972  (Read 2108 times)

jim 56

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w108 280 SE sedan 1972
« on: September 01, 2021, 21:35:42 »
I wonder if  I can get some help. My rear window  has the defroster in the glass the electric. I'm looking for the color of the wires  that go to it and what fuse it's on. Can't seem to find it on any of the diagrams. This the switch on the dash came on but about a minute later it went out without defrosting the window.

ja17

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Re: w108 280 SE sedan 1972
« Reply #1 on: September 02, 2021, 12:39:23 »
Most likely it is a corroded fuse end. There should be several small auxiliary fuse boxes under the hood. They have small dark brown plastic covers. These small fuse boxes are usually added for accessories like rear window defrosters. Check all the fuses in the auxiliary fuse boxes and the main fuse box under the dash. You can twist or clean each fuse to make sure it make contact. Since the ends tarnish and corrode the fuse may show good but not actually contacting. Twisting them can renew the connection. Spray a bit of electrical contact cleaner on the connection to prevent the problem in the future. 
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback

wwheeler

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Re: w108 280 SE sedan 1972
« Reply #2 on: September 02, 2021, 16:07:44 »
Joe brings up a good point and that is as routine maintenance, twist the fuses once a year to prevent issues. I use a dielectric grease on the fuse ends to prevent corrosion from settling in. I don't there is an issue using that but wondering what others say?
Wallace
Texas
'68 280SE W111 coupe
'60 220SE W128 coupe
'70 Plymouth Roadrunner 440+6

jim 56

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Re: w108 280 SE sedan 1972
« Reply #3 on: September 03, 2021, 13:42:17 »
Thanks for the replies. If I recall last year my lights were out on one side and the problem was the fuse end was corred.I will check them all for defroster problem.