I have a 2009 Honda Civic EX-L. When you turn the key on to the Aux 2 position there is a buzzing noise in the radio, more noticeable on the AM stations. The noise goes away and the radio is clear when the key is in the Aux 1 position. The dealer has had the car for two weeks trying to fix the problem and they can not get the noise to go away. Has anyone had any issues similar to this and if so what was the resolution?