Under some conditions, snow and ice can build up under the fenders and interfere with the steering. When driving in severe winter conditions where this may happen, you should periodically check underneath the vehicle to be sure the movement of the front wheels and the steering components is not obstructed.
Kia Cee'd JD Service Manual: Power Outside Mirror Switch Repair procedures
Inspection
1.
Disconnect the negative (-) battery terminal.
2.
Remove the the crash pad garnish [LH] (A).
(Refer to Body - "Cluster Fascia Panel")
3.
Check for continuity ...
Kia Cee'd JD Service Manual: Tail Gate Trim Components and components location
Component Location
1. Tail gate trim
...