When the ignition switch is in the ON position, the clean air function turns on automatically.
Also, the clean air function turns off automatically, when the ignition switch turns to the OFF position.
Kia Cee'd JD Service Manual: Troubleshooting
Troubleshooting
Symptom
Suspect area
Engine will not start or struggle to start
Vapor hose damaged or disconnected
Engine struggles to start
Malfunction of the Purge Control Solenoid Valve
...
Kia Cee'd JD Service Manual: Components and components location
Components
1. Receiver
2. TPMS Sensor
3. TPMS Sensor
4. TPMS Sensor
5. TPMS Sensor
...