GJN Posted April 26, 2012 Report Share Posted April 26, 2012 Hello, Had the car a week, noticed today when using rear demister I get interference on the radio. Any ideas? Bad earth somewhere? Cheers. Link to comment Share on other sites More sharing options...
marc l Posted April 26, 2012 Report Share Posted April 26, 2012 I have this also if I'm trying to listen to a station when out of its area. I am led to believe one of the wires on the back screen is actually for the radio aerial? I'm interested to kno more about this! Link to comment Share on other sites More sharing options...
RoryW Posted April 26, 2012 Report Share Posted April 26, 2012 Aye aerial and window element are both in the rear windows on the loon and coupe. Not sure about the tourings. Mine does the same as your when heater element is in for de-mist. Only ever use it for a couple mins anyway so not much bother to me. Link to comment Share on other sites More sharing options...
mit Posted April 27, 2012 Report Share Posted April 27, 2012 You shouldn't get interference but the above is correct - on saloon and coupe the aerial is in the back window, so it's probably because there's a fault with your demister Link to comment Share on other sites More sharing options...
B0B Posted April 27, 2012 Report Share Posted April 27, 2012 It is worth removing the c pillar on the near side as that is where the aeriel amp is located, first place to start is to make sure the amp is earthed properly and all connections are good. Unless of course you have a bar or two on the rear window that does not demist, then it would suggest the window is at fault Link to comment Share on other sites More sharing options...
GJN Posted April 27, 2012 Author Report Share Posted April 27, 2012 Thanks for that. I've not been able to test the rear demister yet because despite all this rain, it's never misted up! Maybe it's on all the time Strange thing is, driving along today I randomly tried it again, and it worked fine - no interference at all. The only difference was yesterday when it happened I was stuck in traffic, today I was on the move. I'll try it again if I remember. Cheers. Link to comment Share on other sites More sharing options...
Bahnstormer Posted April 28, 2012 Report Share Posted April 28, 2012 (edited) I had exactly the same problem, it's quite common. I sorted it by changing the antenna amplifier for a different type. This one http://www.ebay.co.u...984.m1497.l2649 is the one I fitted, which sorted the problem immediately . In fact, I think delmarco covered this in one his threads, but I'll have to search for it. EDIT - Found it. It was actually part of a thread that was nothing to do with what we're talking about here, but it worked for me 3. 315 Mhz or 433 Mhz Antenna Amplifier for 9/2001 – 2006 E46 BMW. You need BMW Part No. 65256906075 for 315 Mhz or 65256906074 for 433 Mhz. You must replace it based on what was already in your car. If your older Antenna Amplifier said 315 Mhz you have to replace it with a new one that says 315 Mhz. The DIY for this is at this link: http://forum.e46fana...ad.php?t=396343 or you can follow my pictorial DIY for doing it down below. Edited April 28, 2012 by Bahnstormer rickeh 1 Link to comment Share on other sites More sharing options...
mintimperial Posted April 28, 2012 Report Share Posted April 28, 2012 I had exactly the same problem, it's quite common. I sorted it by changing the antenna amplifier for a different type. This one http://www.ebay.co.u...984.m1497.l2649 is the one I fitted, which sorted the problem immediately . In fact, I think delmarco covered this in one his threads, but I'll have to search for it. I have the white box i could sell you for a few quid if you need it. Was gonna ebay it...might not be your prob..just throwing it out there Link to comment Share on other sites More sharing options...
GJN Posted April 28, 2012 Author Report Share Posted April 28, 2012 It is worth removing the c pillar on the near side as that is where the aeriel amp is located, first place to start is to make sure the amp is earthed properly and all connections are good. Unless of course you have a bar or two on the rear window that does not demist, then it would suggest the window is at fault Eyyy. I'm new to BMW's - how do I remove it? Link to comment Share on other sites More sharing options...
Bahnstormer Posted April 28, 2012 Report Share Posted April 28, 2012 Take the map light out (it can be levered out with a flat screwdriver). There's a torx screw behind it (T25 iirc). Once that's out, pull the c-pillar cover out and forwards and you'll see the antenna amp behind it. Link to comment Share on other sites More sharing options...
GJN Posted April 29, 2012 Author Report Share Posted April 29, 2012 Take the map light out (it can be levered out with a flat screwdriver). There's a torx screw behind it (T25 iirc). Once that's out, pull the c-pillar cover out and forwards and you'll see the antenna amp behind it. Thanks, I'll have a look next week if it's stopped raining. Just did some more checks, and it only happens if the engine's running and the rear demister is on - bad interference. Switch the engine off (orange light on the demister button still on), and it's fine. Is this what yours was like? Cheers. Link to comment Share on other sites More sharing options...
Bahnstormer Posted April 29, 2012 Report Share Posted April 29, 2012 Yep, that scenario sounds familiar lol. Link to comment Share on other sites More sharing options...
GJN Posted April 29, 2012 Author Report Share Posted April 29, 2012 Yep, that scenario sounds familiar lol. OK I'll check the frequency of the amp next week. Link to comment Share on other sites More sharing options...
Bahnstormer Posted April 29, 2012 Report Share Posted April 29, 2012 Yeah that's something that quite important, as far as I can tell if you get the wrong frequency the remote keys won't work. At least, that's what I think happens lol. Link to comment Share on other sites More sharing options...
