I hear some noise whenever I open the driver side door..sort of like some mechanical stuff operating
#5
I know exactly what you're referring to, but I'm not sure what it is.
I've speculated in the past that it may be DRC initializing, because it sounds like the noise is coming from all 4 corners and my '06 S4 didn't do that (and of course the S4 doesn't have DRC). But I'm not sure.