Radio interference

[bassonrd]

Gents,

I need some help/advice. When I switch on the my car's ( 2004 Ind ) rear window demister, the radio sounds to distort. Now I know that the BMW's radio "aerial" is incorporated into the back window crossing the window heater strips, or something like that. But surely this shouldn't happen.

 

[rick540]

I've seen this before, there is a small areial amplifier on the C pillar.

I think that needs replacing, as happened to me, but it's difficult to diagnose, need to check all the connections on the window first

 

[andrewbuch]

I had that the other day in my E36.. turned rear window heater on and radio went fuzzy

 

[gazza]

maybe its a bad earth, i know when we install sound and we get this ugly noises, its usually a bad earth or the suppression coil on the radio has packed up.

 

[bassonrd]

thanks guys, I will have a look at the window connections and earth etc.

 

[zippy320]

Did you manage to find a fix on this? my car seems to be doing the same thing

 

[evilsee]

maybe its a bad earth, i know when we install sound and we get this ugly noises, its usually a bad earth or the suppression coil on the radio has packed up.

"earth" on a car?

 

[Carbon M3]

" Earth" or "Ground" on a car aka negative

Battery -ve is connected directly to chassis on all modern cars.

 

[zippy320]

Any idea where we could find this earth wire? Or device. Can someone post a pic?
IV noticed this only happens when the radio and Demister is on. It does not happen if the Cd/ipod is used.

Thanks

 

[Carbon M3]

Being a heating element there will be negative and positive connected to the demister.

I suggest you use a multimeter and test for +ve and the other connection will be -ve.

 

[zippy320]

Hi guys,
Thanks for advice carbon,WIll try that out soon.
I manage to find something
on another forums that states that the whole screen may need to be replaced,something about the current arking due to a break on the demister lines on the screen, when installing or removing tint or any work on the rear screen, Ill have to read up a little more on it