Clicking in ac unit 2016 Expedition

[divernator]

We recently bought a used 2016 Expedition and when you start it there is a loud clicking sound coming from the AC unit in the rear. Sometimes it will do it when you unlock the car. May be electrical? Any thoughts?

 

[99WhiteC5Coupe]

We recently bought a used 2016 Expedition and when you start it there is a loud clicking sound coming from the AC unit in the rear. Sometimes it will do it when you unlock the car. May be electrical? Any thoughts?

Do a search and some reading on this forum. Others have posted regarding this matter.

The rear HVAC electric actuator is defective.

 

[BigOleFordFan]

The rear HVAC electric actuator is defective

^^THIS^^

I had the same issue, but in the front AC, the tech called it the "Air Blend Actuator" or something, which he replaced and boom, problem solved