When I play my iPod the sound is terrible. Vibration etc. on 2007 BMW 335xi

The radio and cd's sound fine. Dealer blamed the cable connecter but upon swapping with a friend it made no difference. iTunes or downloaded cd's are all that's on the iPod so good sources. Help!

by in Weston, MA on January 25, 2012
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1 answer 2 comments
ANSWER by , January 25, 2012
Couple questions: Is this a factory ipod connection kit? Have you tried a different ipod?
COMMENT by , January 25, 2012
Yes it's a factory connection, and the iPod is new- 6 months. But no, I have not tried a different one.
COMMENT by , January 25, 2012
I'd try a friend's just to rule out the connector on the bottom of your ipod before chasing other potential causes.