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New noise after shutoff.. (The Cooing)

For the last day or three the Roadster has been making a new noise after shutdown. Takes a minute to a minute and a half after turn off to start, it slowly rises in volume and then stops. I'd call it a cyclic ping, cooing, or chirp sound. The sound is definitely louder in person, but not significantly. The first time I didn't realize it was the car.

Doesn't seem to depend on how long the car is on/distance. Coolant levels are good, pump is running normally, nothing seems out of whack in the rear end. Car is driving and running fine, no warnings in diagnostic mode (should dump the logs and check them). Doesn't seem to happen when the car is running, but there is enough other noise that it would be hard to tell. The car was at Tesla for its yearly only 2 months ago. My best guess is a cooling fan bearing beginning to fail -- I hope I'm wrong, also it doesn't seem like the fans are really spinning when I hear it.



Anyone had similar symptoms or have any thoughts?

Thanks!
 
Quick update, was a PEM fan bearing. Sadly they had to replace the entire fan assembly. Previously I had the dual motor, dual fan arrangement. I opted for the newer dual fan single motor system. This upgrade involved swapping the rear sway bar as well, which means I now have the adjustable one. Total cost was ~$1600. Kept the old parts as spares. I can snap some photos if people are curious.
 

BartJ

early member
Dec 13, 2014
553
344
Belgium
Quick update, was a PEM fan bearing. Sadly they had to replace the entire fan assembly. Previously I had the dual motor, dual fan arrangement. I opted for the newer dual fan single motor system. This upgrade involved swapping the rear sway bar as well, which means I now have the adjustable one. Total cost was ~$1600. Kept the old parts as spares. I can snap some photos if people are curious.

does that mean that all roadster that are equipped with the dual fan single motor system, automatically have an adjustable rear sway bar ?
How can I tell if my mine is adjustable ?
 

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