93 325is, Had it for a month now. Rear defogger never worked, I checked everything and found no problem. Then I tryied putting it on while the radio was on and it works, but it screws up the radio antenna and the radio won't get any stations. Turn off the defogger the radio reception is fine. Turn radio off turn on defogger it won't work. Any ideas ? I see that behind the driver rear 1/4 cover the antenna and defogger come together into a white box about 4''x 2''. Does this thing ever go bad ?
I have the same problem, when i turn on rear defrost it will make the radio go psssssssshhhhhhh fuzz, but not cds. and its not a bmw cd deck either..
this is a common prob, i know people around here know how to fix it, i never bothered reading how because the radio sucks anyways.
The radio antenna is in the rear window along with the defogger. Beyond that , I don't why yours would interfere while others' don't. Maybe a grounding problem with your radio????
Lee
I think it's antenna amplifier problem
Annddrriy: on you E32 the amplifier for the antenna is behind the C-pillar(s). Check the fuse box under your rear seat of the E32, because there is also the fuse for the rear window defogger and that goes the same route via the C-pillar and this fuse is known to cause fire or blows.
https://www.bimmerforums.com/forum/s...fire+rear+seat
Shogun tricks and tips for the E32 series are HERE!
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