The Bolero unit in my car makes noises that sound like the CD player is shuffling when the ignition is off. If I turn off the car ignition and stay inside I can hear it and also when I get in the car before I turn on the ignition. Is this normal? 

Yes I think mine does it.

 

Perhaps it's the head in the CD player moving away/parking. Mine does it and I don't even use the CD changer, it's empty.

I'm pretty sure that mine is total silent.

I don't have the cd changer. Only the bolero unit itself.

These strange noises are I think normal. Mine does this a few minutes after switching off the ignition.