What is constantly on behind my dash and makes weird noises even w/ ignition off?
#1
#2
#4
there is a cabin air sensor that has a small fan in it that the hvac system uses and can run independently of the ignition, although it should not be running 24/7. It is in the dash - that little vent looking thingy.
Fuel pump kicking on can sometimes sound like a small fan running and the noise can be hard to pinpoint.
Other than that, can't think of anything else that would do that.
Fuel pump kicking on can sometimes sound like a small fan running and the noise can be hard to pinpoint.
Other than that, can't think of anything else that would do that.
#5
The noise is probably the tiny fan which carries on running in humid conditions to circulate the air so you dont get blasted by warm air when you use your climate control.It circulates air across the humidity sensor. It keeps running for a while after you switch off, and starts again when you open a door. It does this so that there is less delay in getting the climate control to the right setting when you switch on (or restart).
Clever, eh?
Clever, eh?
#6
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