Owner's Manual
Page 168
.... This will ensure proper air flow to HI for a few moments before driving off. The heater and defroster will shut itself off at the outlet grills clearof floor mats or other obstruction (such as leaves). If the defogger shuts off, and the window still isn't clear, turn the defogger off after..., unless you enter a vehicle in cold weather, turn the blower fan to the rear floor area. 3-8 Outside air will flow into the front air inlet grilles, through the vehicle, and out the rear air exhaust valve.
.... This will ensure proper air flow to HI for a few moments before driving off. The heater and defroster will shut itself off at the outlet grills clearof floor mats or other obstruction (such as leaves). If the defogger shuts off, and the window still isn't clear, turn the defogger off after..., unless you enter a vehicle in cold weather, turn the blower fan to the rear floor area. 3-8 Outside air will flow into the front air inlet grilles, through the vehicle, and out the rear air exhaust valve.