Basically I can’t choose any vent settings for the HVAC past the Defrost + Foot option (look at pic, green works ok red clicks)
. If I do. It has a clicking sound and it never stops. This winter it was doing it to but in some rare occasions it would go through all the way to the end.
Any idea what it could be? I’m not to sure on what to go on. I’m afraid it might be like a gear that is broken or something deep inside the dash? The noise pretty comes from the middle of the dash I would say to.
my (uninformed) guess is that a flap that controls the air direction and is controlled by a gear driven motor has a problem with one or more broken teeth.
These are usually plastic gears and break easily. The computer is trying to move the flap/door and can’t due to the broken teeth, but keeps trying.
could be very expensive to repair as you may need the dash removed, always a time consuming process.
Good comments above. If you feel lucky, one failure mode that can cause this is the actuator motors losing their home position due to some glitch or another, and after that happens they don’t know how to obey a command to move to a new position. B/c they don’t know which position they are in. If so, that problem can be solved by re-homing the actuators. Usually requires a specialized scan tool that the dealership would have. Unless you are certain you are dealing with an actual failed actuator, suggest a visit to a dealership is in order before digging into the dash. Some of those actuator motors are fairly easy to access, but some can be real bears.
