A noise that sounds like an auto antenna trying to go up or down inside the dash happening randomly. Tried turning off radio and climate control unit. The noise continues for a while after the car is turned off and key removed. Any ideas?
The forward part of the dash vibrating against the windshield. Place some small unobtrusive wedges between screen and dash after your passenger has tested it by placing their hand towards forward dash center.
Or:
One of the two hvac blend door motors actuators arms has jumped out of the blend door cam, or the actuator mototors themselves need refurb or replacement.
If its happening during driving its the former, if after key-off it’s the latter.
Happened to me. Subaru dealer put a new one in, but gave me the old actuator. When I opened it up, I found some white grease had flowed over a PCB track used as a variable resistance for a potentiometer wiper. Just needed a rag and metho to clean it off.