One problem related to power window has been reported for the 1998 Kia Motor Sephia. The most recently reported issues are listed below.
The power windows & door locks would go up & down on their own. The doors are not locked securely. The windows fail to remain close or open when this happens. The steering wheel would vibrate after vehicle is started. Whenever the brakes are applied, vehicle shakes. The tire moulding & the trim is peeling off. Every time the vehicle stops, it would to be jump started, constantly. Taking vehicle back to dealer to repair problems.