[Legendnz]

I keep hearing this buzzing/humming sound from behind my dash around the hvac controls that wasn't there before. I don't hear it when i first turn on the car, only after driving for a while (after engine is warmed up perhaps?). It sounds like an electric motor or pump, definitely something rotating... And the sounds go away when the a/c turn on.

Its more or less a constant tone, doesn't change with RPM's or different gears, it doesnt change when i turn the steering wheel. and its not the hvac fan because i hear it when everything is off.

what do you guys think? any ideas?
It is a 320i btw.

[BMWSOZE]

Originally Posted by Legendnz

I keep hearing this buzzing/humming sound from behind my dash around the hvac controls that wasn't there before. I don't hear it when i first turn on the car, only after driving for a while (after engine is warmed up perhaps?). It sounds like an electric motor or pump, definitely something rotating... And the sounds go away when the a/c turn on.

Its more or less a constant tone, doesn't change with RPM's or different gears, it doesnt change when i turn the steering wheel. and its not the hvac fan because i hear it when everything is off.

what do you guys think? any ideas?
It is a 320i btw.

Wouldn't happen to have in dash GPS/CD loaded disc unit would you?

[Legendnz]

Pretty sure its not da disc. Appears Noise is related to a/c as it goes away when it turned on. And it only happens when the engine warms up. Also cannot hear from the engine bay. Can only hear from inside

[Legendnz]

Any idea people???