The positive crankcase ventilation system is employed to prevent air pollution caused by blow-by gases being emitted from the crankcase. This system supplies fresh filtered air to the crankcase through the air intake hose. Inside the crankcase, the fresh air mixes with blow-by gases, which then pass through the PCV valve into the induction system.
Lincoln Nautilus 2018-2022 Owners Manual: Symbols Glossary
SYMBOLS USED ON YOUR VEHICLE
These are some of the symbols you may see on your vehicle.
Air conditioning system
Air conditioning system lubricant
type
Anti-lock braking system
Avoid smoking, flames or sparks
Battery
Battery acid
Brake fluid - non petroleum based
Brake system
Brake system
...
Lincoln Nautilus 2018-2022 Owners Manual: Switching Climate Control On and Off. Switching Recirculated Air On and Off. Switching Air Conditioning On and Off. Switching Maximum Defrost On and Off. Switching Maximum Cooling On and Off
Switching Climate Control On and Off
Press the button.
Switching Recirculated Air On and Off
Press the button to recirculate
air
currently in the passenger
compartment.
Note: Recirculated air could turn off or be
prevented from turning on in all air flow
modes except maximum cooling to reduce ...