See also:

HEATING CONTROLS
For normal heating operation, set the air intake control to the fresh air () position and the air flow control to the floor () position. For faster heating, the air intake control should be set ...

Bi-level heating
Your Hyundai is equipped with bi-level heating controls. To use this feature: o Set the air intake control to the fresh air () position. o Set the air flow control at the bi-level () position. ...

Efficiency & Drivability
Automakers have been racing to produce small cars that get great gas mileage using conventional engines, and Hyundai has succeeded on that front with the 2011 Elantra, which is powered by a new 14 ...