Exclamation mark when starting up the car?

Hi!



I've noticed something lately. When I'm putting in my key in and putting the foot on the brake a big yellow exclamation mark appears (not with an triangle) on the dashboard where the gears usually shows.



When pressing the start button again (to start the car), it runs the start engine for 1 second and then just simply dies. When pulling the key and putting it back again, the car starts normal without any issues.



What can this be?



Thanks!



Best regards,

// Mattias