See also:

Fan speed control
The ignition switch must be in the ON position for fan operation. The fan speed control knob allows you to control the fan speed of the air flowing from the ventilation system. To change the fan ...

Exhaust Emission Control System
The Exhaust Emission Control System is a highly effective system which controls exhaust emissions while maintaining good vehicle performace. ...

2012 Hyundai Elantra review By Steven Cole Smith
Just as Hyundai did with the new Sonata -- which matches and in many ways surpasses its top competition in the midsized category, the Honda Accord and Toyota Corolla -- the Korean company is hopin ...