Got in my car today and the screen for the NAV, radio, etc will not turn on. It makes the standard noise when touched, but the display is not functioning.

Anything I should try or is this a dealer fix?

My car is still under the CPO warranty; does anyone know if this is something that would normally be covered?

 

Screen magically came back on all by itself a couple days later.

But it now a new symptom - whenever the car is in “off”mode of the Auto Start/Stop and I release the brake to restart the car, the screen shuts off ever so briefly and then comes back on. Is this a normal practice when coming out of Auto Start/Stop?