1. Ensure that the ignition of the BMW X3 is turned on.
2. Locate the power window switch for the window you wish to auto roll up.
3. Press and hold the power window switch until the window is completely closed.
4. Continue to hold the power window switch for at least 1 second even after the window closes.
5. Release the power window switch.
The one-touch power window feature should now be enabled for your BMW X3.