in my old car I had 15 seconds of power to roll up the windows after the key was turned to off. Any idea how to achieve this in the XB?

 

moved...

 

you can do something like that....
you can use relays to keep power going to the window systems untill a door is opened. can also power the radio the same way....

or you can get an alarm system with window modules to roll them up/down....

 

I know with the tC, you can turn the car off and take the key out and can operate any of the power items (windows / moonroof) until you open the door. The lights will also stay on until you open the door.

xB does not have this?

 

nope nor the xA...

no auto-up windows either...