Hi all ever since i had the car if i turn on the rear demister when listening to the radio all signal is lost and all i get is static. Turn the demister off and all good again. Got a new head unit coming tomorrow to replace oem one. Was just wondering if anyone knew what was causing it so i can fix it while putting the new head unit in.
Thanks

 

The rear demister acts as the aerial as well via a powered amp along with a noise suppresion unit
Sounds as if the noise suppression unit may be dead.
Details all here..........
http://opposedforces.com/parts/impre...llustration_2/

When fitting a new HU make sure you connect to the powered amp (usually the blue powered aerial wire)

 

Is the noise suppressor in the boot ?

 

Looking at the diagram in opposedforces I would think its on the RH side tucked up under the rear parcel shelf.

from the MY07 workshop manual




Noise suppressor is choke coil on wiring diagram below

 

Thanks will have a look over the weekend