Assist Power Window Switch

WARNING: This page is about a different car, the 2017 Hyundai Tucson. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative (-) battery terminal.
Remove the assist door trim.
(Refer to Body - "FRONT DOOR TRIM ")
Disconnect the power mirror switch connector from the door trim.

Fig 1: Disconnecting Power Mirror Switch Connector From Door Trim With Terminals
Courtesy of HYUNDAI MOTOR AMERICA
Check for continuity between the terminals in each switch position as shown in (Fig 2) and (Fig 3).
[Power Window Switch Inspection]

Fig 2: Power Window Switch Connector Terminals Continuity Chart
Courtesy of HYUNDAI MOTOR AMERICA

[Power Door Lock Switch Inspection]

Fig 3: Power Door Lock Switch Connector Terminals Continuity Chart
Courtesy of HYUNDAI MOTOR AMERICA