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#1
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Rear window defroster defogger not working?
My rear window defroster not working,the button lights up,but wont defrost?This on a 83 300d.
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#2
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You may have a defective "combination relay" (N10). The timer circuit in N10 will turn on the light in the switch even though the relay does not send current to the heated rear window. It is possible to remove the relay and take it apart. The relay contacts may simply be dirty/burned. You can clean the contacts with very light sandpaper (gently) and restore the circuit to working.
You should also trace the wire leads to where they connect to the element in the heated rear window. Check the traces with an ohmmeter to make sure you don't have an open element. There are repair kits available although I've never used one. Those are the two most likely causes. Jeremy
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"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
#3
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Another simple test is to chech the heating element on the window for any breaks.
You never know who was throwing stuff back there. Any breaks can be fixed with conductive "paint". It's actually a paste that comes in a tube much like touch up paint. Can be found at auto parts stores. Danny
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1984 300SD Turbo Diesel 150,000 miles OBK member #23 (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination |
#4
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I have an spare relay, not sure if it works or not though.
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1985 300TD Turbo Euro-wagon 1979 280CE 225,200 miles 1985 300D Turbo 264,000 miles 1976 240D 190,000 miles 1979 300TD 220,000 GONE but not forgotten 1976 300D 195,300 miles 1983 300D Turbo 175,000 miles http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg |
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