and clicks and clicks and clicks. About 1 click per second.
We've gotten good at ignoring it.

That's the rear cabin fan in the ceiling, by the 3rd row seats.

Sometimes my wife can play with the forward controls (ceiling center for the rear) and get it to quit, but she can't tell me what she did to make it happen.

Some fan speeds make the click louder. Same speed of clicking, just louder.

Does anyone know what this might be?
More importantly, how to fix it?

Thanks in advance.

HolderOfTheHorn