Interesting. Everytime I drive it I have to.

I did some more experimenting, and I think it may relate to comfort access. It seems if I unlock the car and get in, then sit there (not started) for a bit, and start the car later, it is immediately ready when the car is running (for the accept screen).

If I unlock and sit and start the car without pause, once the engine is running it takes another 10-20 seconds before the screen comes up.

I think the computer is doing a boot up of some sort when I unlock it, not when the car starts, and just takes some time.