Hi All,

I'm a new 2011 C300 Sport 4matic owner.
I tried using an original iPhone 2g dock to connect my iphone 3Gs with both the Ipod Integration Kit and the standard Audio 20's aux-in simultaneously. (Also wanted to use the dock so the phone could be held upright in the glove box). It didn't work, only the aux-in works and recharging of the iPhone, but no go on Ipod control.

I'm concerned if using the dock could cause a spike, ground the electrical system or damage the electrical relays. Even after this experiment, I'm hearing buzzing from the Audio 20 that is more than just it's fan and the relays in the dash seem to have frequent relay clicking.

Any help would be appreciated.

Thanks in advance