Nissan Altima (L34) 2019-2025 Owners Manual: Manual operation

Fan speed control buttons

Press the fan speed control buttons to manually control the fan speed.

Press the AUTO button to return to automatic control of the fan speed.

Temperature control dial

The temperature control dial allows you to adjust the temperature of the outlet air. To lower the temperature, turn the dial to the left. To increase the temperature, turn the dial to the right. Temperature can be adjusted on the driver’s and passenger’s side.

Air recirculation

Press theair recirculation button to recirculate interior air inside the vehicle.

Theindicator light on the button will come on.

The air recirculation cannot be activated when the air conditioner is in thefront defrosting mode.

When the outside temperature exceeds 70ºF (21ºC), the air conditioning system may default to air recirculation mode automatically to reduce overall power consumption.

To exit air recirculation mode, deselect the air recirculation button (indicator light will turn off) to enter fresh air mode.

Automatic intake air control

In the AUTO mode, the intake air will be controlled automatically. To manually control the intake air, press theair recirculation button. To return to the automatic control mode, press and hold the air recirculation button for about 2 seconds.

The indicator light will flash twice, and then the intake air will be controlled automatically.

A/C (air conditioner) button

Start the engine, press thefan speed control buttons to the desired position and press the button to turn on the air conditioner. To turn off the air conditioner, press the button again.

The air conditioner cooling function operates only when the engine is running.

Air flow control

Pressing thebutton manually controls air flow and selects the air outlet:

- Air flows from center and side vents.

- Air flows from center and side vents and foot outlets.

- Air flows mainly from the foot outlets.

- Air flows from defroster and foot outlets.

Synchronize climate settings

Press the SYNC button to synchronize climate settings. The sync indicator will turn on.

Pressing SYNC will synchronize driver's and front passenger's climate settings.

To change climate settings when SYNC is active (the SYNC indicator is on):

• The driver's side temperature control dial will control the driver and front passenger temperatures.
• The fan speed control dial will control the fan speeds.

To exit SYNC:

• To remove the front passenger from SYNC, turn the passenger's side temperature control dial.
• Pressing SYNC multiple times will reactivate SYNC.

To turn system off

Press the ON-OFF button.

Rear window and outside mirror (if so equipped) defroster switch

For additional information, see "Rear window and outside mirror (if so equipped) defroster switch".

Heated seat switches

For additional information, see "Heated seat switches".

Heated steering wheel switch

For additional information, see "Heated steering wheel switch".