Strange ticking noise behind the center panel
 

Hi
Our 2018 Pacifica Hybrid Limited started having a ticking noise coming from behind the main AC control panel.
When you turn it on, it goes away.
Also when the battery is at 0%, there is no noise.
Took it to the dealership and showed them a video but they couldn't reproduce it and said sorry we can't do anything.
Did anybody experienced such an issue?

https://youtu.be/N780_43tams

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You Tube

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You may have a vent actuator issue. A lot of times you will get that kind of clicking noise when the gear on the vent door/flap becomes worn out or misaligned with the post on the actuator. If that isn't the issue, I can't think of anything else that would cause that type of noise. Make sure to find a diagram of the HVAC vent system. Newer vehicles, especially SUVs and crossovers, have multiple actuators, and the ductwork may carry the noise, causing it to sound like it is coming from somewhere it's not. Hope this helps!

Thanks!
I'll check it out.

same problem than you, a bit worse
 

Your problem is very similar to mine, although mine seems louder and longer. Check the video. Did you get it fixed? what was it?

Thanks

Yes, it sounds similar.
I haven't fixed it. The dealership couldn't reproduce it. It does stop a few minutes after I lock the vehicle.
It must be one of the actuators gets out of sync when you turn off the car. Hope it doesn't manifest into a bigger problem in the future.

Possible Solution
 

Looks like this is the solution

https://www.pacificaforums.com/threa...-4#post-625264



"The hunting servo sound is a re-circulation door actuator hunting for its commanded position. It is usually noticeable after the car is turned off and there is no other sound to mask it. At shutdown, the actuator is commanded to its neutral position. A failing actuator “hunts” or oscillates around the commanded position due to degrading electrical contact of the Pot (feedback) wiper in the actuator. It can and has occurred at other times. The hunting can continue for minutes until the drive circuit is either disabled during normal vehicle off shutdown sequence or if the position feedback pot randomly happens to satisfy the driver commanded position. Once the hunting gets bad enough, thousands of cycles can be put on the actuator in a short time. (Before mine was finally replaced it would always hunt for several minutes until the driver was disabled during the vehicle Off sequencing, and would trigger again whenever the car was shut down or the door was simply opened).
As Preebs78 pointed out: “It is the recirculator actuator or better known as the blend door actuator … part # 6830967AA. It costs less than $30 over the parts counter at the dealership and is even cheaper aftermarket."

Great. I'll probably fix it when it is completely dead