then the issue comes from GM/RM modules. Check good connection in their sockets for: Fuses F17, F24, F30, F47, Relay K15, and modules GM and RM. This picture will help you identify some of the items below the rear seat.
I would plug/unplug the relay K15 (Power Protection), as if he is not activating properly (you should feel the click when plugging in if key is in running position), power is not reaching windows/locks.
The issue may be as simple as a damaged/overheated fuse socket or fuse that disconnects under freezing cold. You can help yourself identifying the culprit with an hair dryer, point to specific items, and see if warming them solves the situation.
Note: Battery should be disconnected to plug back the GM.
Javier