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 unlock and toward the front of the vehicle to lock.
3. To reinstall the mechanical key, put the key into the hole and push it until a click sound is heard.
Kia Cee'd JD Service Manual: Components and components location
Components Location
1. PCV valve
2. Canister
3. Purge control solenoid valve
(PCSV)
4. Catalytic converter (WCC/UCC)
1. PCV valve
2. Canister
...
Kia Cee'd JD Service Manual: Back-up Lamp Switch Specifications
Specifications
Item
Specified
Type
ON/OFF
Operation condition
Reverse gear
Operation voltage
10V ~ 15V
Operation temperatures
-30°C ...