I tried turning off the car and restarting it, but the infotainment system is still frozen.
ReplyFirst, try pressing the reset button located on the top left corner of the infotainment screen. If that doesn't work, you can also try disconnecting the car battery for a few minutes and then reconnecting it.
You can also contact your local Kia dealership for assistance. They may be able to provide additional troubleshooting steps or schedule a service appointment for you.