Kia Cee'd: Door locks / Operating door locks from inside the vehicle

In case of an emergency (5 Door and wagon)

If the power door lock switch does not operate electrically, the only way to lock the door(s) is with the mechanical key from the outside key hole. You can lock the doors without the outside ...

With the door handle

Driver’s door and front passanger’s door (if equipped) If the inner door handle is pulled when the door is locked, the door will unlock and open. Rear door (if equipped) If the inner do ...

Other information:

Kia Cee'd JD Owners Manual: Door lock/unlock in an emergency situation
If the smart key does not operate normally, you can lock or unlock the doors by using the mechanical key. 1.Press and hold the release button (1) and remove the mechanical key (2). 2.Insert the key into the hole of the outside door handle. Turn the key toward the rear of the vehicle to ...

Kia Cee'd JD Service Manual: Fuel Filler Door Release Actuator Repair procedures
Removal 1. Disconnect the negative (-) battery terminal. 2. Open the tailgate and then remove the luggage side trim. (Refer to Body - "Luggage Side Trim") 3. Disconnect the fuel filler d ...