This indicator light is part of the Engine Control System which monitors various emission control system components. If this light illuminates while driving, it indicates that a potential problem has been detected somewhere in the emission control system.
This light will also illuminate when the ignition switch is turned to the ON position, and will go out in a few seconds after the engine is started. If it illuminates while driving, or does not illuminate when the ignition key is turned to the ON position, we recommend that the system be checked by an authorized Kia dealer. Generally, your vehicle will continue to be drivable, but we recommend that the system be checked by an authorized Kia dealer.
CAUTION
Prolonged driving with the Emission Control System Malfunction Indicator Light illuminated may cause damage to the emission control systems which could effect drivability and/or fuel economy.
CAUTION - Gasoline engine
If the Emission Control System Malfunction Indicator Light illuminates, potential catalytic converter damage is possible which could result in loss of engine power. We recommend that the system be inspected by an authorized Kia dealer.
CAUTION - Diesel engine (if equipped with DPF)
When the malfunction indicator light blinks, it may stop blinking after driving the vehicle at more than 60km/h (37 mph) or at more than second gear with 1500 ~ 2500 engine rpm for a certain time (for about 25 minutes). If the malfunction indicator light continues to blink in spite of the procedure, we recommend that the system be checked by an authorized Kia dealer.
If you continue to drive with the malfunction indicator light blinking for a long time, the DPF system can be damaged and fuel consumption can worsen.
CAUTION - Diesel engine
If the Emission Control System Malfunction Indicator Light blinks, some error related to the injection quantity adjustment occurs which could result in loss of engine power, combustion noise and poor emission. We recommend that the system be inspected by an authorized Kia dealer.
Kia Cee'd JD Service Manual: Overhead Console Lamp Repair procedures
Inspection
1.
Remove the overhead console lamp assembly then check for continuity
between terminals. If the continuity is not as specified, replace the
map lamp switch.
[Non-Sunroof Type]
No.
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Kia Cee'd JD Service Manual: Room Lamp Repair procedures
Inspection
Room Lamp
1.
Check that the switch operates properly after disconnecting the room
lamp connector (A).
Removal
Room Lamp
1.
Disconnect the negative(-) battery terminal.
...