This warning message popped up turned off after a certain period of time) means a problem with Lane Following Assist.

In this case, have the system checked by an authorized Kia dealer.

CAUTION

It is the driver's responsibility to operate the steering wheel while driving.
With Lane Following Assist on, the driver can steer the vehicle by operating the wheel on his own.
We recommend that the driver turn off Lane Following Assist and operate the steering wheel by himself in the following situations:
- bad weather
- bad road conditions
- when frequent operation of the steering wheel is required
- when towing other vehicles or trailers
The steering wheel can feel heavy or light if Lane Following Assist is assisting the steering.