1. Open the driver's door of your Hyundai XG350 and locate the fuse box cover on the side of the dashboard.
2. Remove the fuse box cover by pulling it towards you.
3. Locate the fuse labeled "PWR WINDOW" in the fuse box. It is usually a 10-amp fuse.
4. If the fuse is blown, replace it with a new one of the same amperage.
5. Reinstall the fuse box cover and close the driver's door.
6. Test the window to ensure that it is working correctly.
If the fuse is not blown or replacing it does not solve the problem, there may be another issue with the window motor or wiring. In this case, you should consult with a qualified mechanic for further diagnosis and repair.
