2007~2015 CX-9 Doors lock/unlock rapidly on their own in frigid temps

[jonny rotten]

Any idea what would cause the door locks to open and close over and over all by themselves in frigid weather only. Fist we used the remote start and when we went to the car we couldn't get in and could here the locks moving. Somehow finally we got the back and side door open and crawled in with the locks still moving. Then in the driveway it happened again without using the remote start. It's happened a few times in the past. As soon as the outdoor temps warm up to around 30 it goes away and works fine.
Any ideas what it could possibly be? I'm thinking a computer glitch
2008 CX 9. I've had it for 11 years

 

[Bronco Boy]

Could be the BCM or a switch. I would start by unplugging each door lock switch, one at a time, while the problem is happening. If that doesn't do anything, then I'd look at the BCM. Could also remove fuse # 15 under the hood and re-insert; might do something but I doubt it.