DAB not working with rear screen on

[jonpiz]

Every time I put my rear screen demister on, my DAB signal stops. Any ideas warmly welcomed please

 

[alexanderfoti]

What car please?

 

[Blobcat]

What car please?

I’ll take a stab at an C207 E220 CDI

 

[jonpiz]

I’ll take a stab at an C207 E220 CDI

How did you guess

 

[jonpiz]

What car please?

C207 E220 CDI

 

[Botus]

after market DAB of factory ?

 

[brandwooddixon]

Amplifier/filter in c pillar?

 

[alexanderfoti]

either bad connection at the rear heated window elements, or a broken element causing interference. Do all of your rear elements heat up?

 

[Rob7seven]

Could this be related to the state of your car's battery? My last car, an Alfa Romeo Giulia (kiss kiss, I still miss it), used to suffer similarly, but the other way around, if the battery needed a boost, the HRW stopped working, not sure if other functions were affected, but the radio & stereo weren't. I don't do a big mileage except on holidays, I used to get frequent low battery warnings on the dash display on both cars, but only ever noticed loss of functions on my Alfa,

Regular trickle charging was the answer of course, and never a problem with my C300..