Annoying high pitch noise - Any ideas?
I have finally become an Alfa owner, picked up my factory new 159 1750TBi this Friday. It's absolutely a fantastic car, but it has one annoying little issue: It makes a high pitch noise!
I have tried to locate the source, and it seems to be related to the radio/sattelite-navigation. When I insert the key, there is a more low frequent sound coming from the navi-area, and this seems like a normal sound. After the navi has started up and the Alfa logo has disappeared, it starts to make an annoying high frequent noise. It seems to me like it comes from the speakers in the front, but I'm not 100% sure. The sound persist after I remove the key, and disappears as the light from the ignition fades. The low frequent/normal sound will still be there for a few more seconds. The noise is not very loud, but it's audible and extremely annoying.
Is this a known problem? Could anyone please help me out explaining this?
I do have the BOSE sound system, could it be related? The noise is not coming from the amplifier or the speaker in the rear.
Last edited by Vgard82; 13-03-11 at 17:57.