Those are antennas for satellite radio.
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yes, have checked rear window antenna ā seems to be correct
Those shark fin antennas you see on the roof are for satellite radio only and are hardly garbage.
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You might check the antenna connection on the back of the radio, make sure it is snug, and give it a couple of twists and turns.
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There is also a connection in the c Pillar that could be the problem.
thanks will check it out again
On my good friendās Passat (not equipped with a satellite receiver), the antenna mast on the dome over the rear window is the FM antenna. I know because someone stole his antenna and we had to listen to nothing but static whenever we hung out. I ordered a replacement mast for him (I was feeling generous!) and it restored FM reception.
It is highly likely that in trim levels which include a satellite radio, the underside of the dome is populated with the proper XM antenna.