Hello, I drive a Subaru Forester 2.0 diesel with automatic transmission, year 2017. At temperatures below + 3 degrees, the automatic transmission does not switch up or down to the first 3-4 kilometers. The engine turns up forever and nothing happens. I then travel at 30 – 40 km/h. Manual switching does not work, the gear paddles are in this phase without function. After 3 -4 kilometers, almost at the same time with the extinction of the blue temerature lamp everything works again. Does anyone have an idea what the could be?