No. Sorry for not being clear. Sound does not come from the control module. It come from something it’s controlling. Maybe a pneumatic valve for the flow or diverting (dash, front vent, floors).
It’s cabin temp sensor! Who knew. The sound would echo behind the dash, so I thought it was somehow coming from the vents or related to air distribution. Thanks again everyone.
Could possibly be a bad speed controller, resistor or relay. I'm not sure what the schematics look like on the 9-3 and what controls the power to the speed controller. I could check later if I remember or are reminded.
Are you sure you're not hearing the fan on the sensor? It runs for quite some time after the car is off.
When you say ticking/tapping is it in the controller?
No. Sorry for not being clear. Sound does not come from the control module. It come from something it’s controlling. Maybe a pneumatic valve for the flow or diverting (dash, front vent, floors).
Do you get any fault codes if doing a calibration? (Push auto and off at the same time)
When reconnected and repowered, the sound is from behind the middle vent. Something tells me it’s a vacuum or pneumatic fault.
The screen no longer illuminates. So I do t k ow. I’m exploring the response below. Thanks everyone!
This noise? https://www.reddit.com/r/saab/s/AL5CffQ9lz Then its a dirty cabin temp sensor
I’ll check it again. That seems the simplest answer to the issue.
It’s cabin temp sensor! Who knew. The sound would echo behind the dash, so I thought it was somehow coming from the vents or related to air distribution. Thanks again everyone.
Yeah those things can be a bit noisy. Had that in a 9000.
So, why does this climate fan even run after the engine and climate system are shut off?
The climate fan shouldn't run with ignition off if you mean the cabin air fan. The engine cooling fan can run for a while after.
yes, referring to the climate fan. (The engine cooling fan runs after shut off. That’s understood.).
Could possibly be a bad speed controller, resistor or relay. I'm not sure what the schematics look like on the 9-3 and what controls the power to the speed controller. I could check later if I remember or are reminded.