Nissan Altima (L33) 2013-2018 Owners Manual: Heater operation

Heating

This mode is used to direct heated air to the foot outlets. Some air also flows from the defrost outlets and the side vent outlets.

1. Press the button to the OFF
position for normal heating.

2. Press  the air flow control
button.

3. Turn the fan control dial to the desired position.

4. Turn the temperature control dial to the desired position between the middle and the hot position.

Ventilation This mode directs outside air to the side and center vents.

1. Press the button to the OFF
position.

2. Press  the air flow control
button.

3. Turn the fan control dial to the desired position.

4. Turn the temperature control dial to the desired position.

Defrosting or defogging

This mode directs the air to the defrost outlets to defrost/defog the windows.

1. Press the defrost/defog button .

2. Turn the fan control dial to the desired position.

3. Turn the temperature control dial to the desired position between the middle and the hot position.

● To quickly remove ice or fog from the windows, turn the fan control dial to the highest setting and the temperature control to the full HOT position.

● When the position is selected,
the air conditioner automatically turns on (the indicator light on the button will come on)
if the outside temperature is more than 36°F (2°C). This dehumidifies the air which helps defog the windshield. The mode
automatically turns off, allowing outside air to be drawn into the passenger compartment to further improve the defogging performance.

The recirculation mode cannot be activated in the position.

Bi-level heating

The bi-level mode directs warmed air to the side and center vents and to the front and rear floor outlets.

1. Press the button to the OFF
position.

2. Press the air flow control
button.

3. Turn the fan control dial to the desired position.

4. Turn the temperature control dial to the desired position.

Heating and defogging

This mode heats the interior and defogs the windshield.

1. Press the air flow control
button.

2. Turn the fan control dial to the desired position.

3. Turn the temperature control dial to the desired position between the middle and the hot position.

● When the position is selected,
the air conditioner automatically turns on if the outside temperature is more than 36°F (2°C).

The indicator light on the A/C button will come on. This dehumidifies the air which helps defog the windshield. The
mode automatically turns off, allowing outside air to be drawn into the passenger compartment to further improve the defogging performance. The recirculation mode cannot be activated in the
position.

Operating tips

Clear snow and ice from the wiper blades and air inlet in front of the windshield. This improves heater operation.