Malfunction Indicator Light

This light illuminates when there is a malfunction of an exhaust gas related component and the system is not functioning properly. This light will also illuminate when the ignition key 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, take your car to your nearest authorized Hyundai dealer and have the system checked.
CAUTION:
Prolonged driving with the Emission Control System Malfunction Indicator Light illuminated may cause damage to the emission control systems which could effect drivability or fuel economy. If the Emission Control System Malfunction Indicator Light begins to flash ON and OFF, potential catalytic converter damage is possible. This could result in loss of engine power. Have the Engine Control System inspected as soon as possible by an authorized Hyundai dealer.
See also:
2011 Hyundai Sonata review
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And according to the late night profanity-laced messages left on my voice
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Armed Stage
Park the car and stop the engine. Arm the system as described in the following
paragraph.
1) Remove the ignition key from the ignition switch.
2) Make sure that all doors, tail gate (3 Door) and ...
Larger Children
Children who are too large for child restraint systems should always occupy the
rear seat and use the available lap/ shoulder belts. The lap portion should be fastened
snug on the hips and as low ...


