Nissan Altima (L34) 2019-2024 Owners Manual: Operating tips

The sunload sensor, located on the top center of the instrument panel, helps the system maintain a constant temperature.

Do not put anything on or around this sensor.

• When the climate system is in automatic operation and the engine coolant temperature and outside air temperature are low, the air flow outlet may default to defroster mode for a maximum of 2 minutes 30 seconds. This is not a malfunction.

  After the engine coolant temperature warms up, the air flow outlet will return to foot mode and operation will continue normally.

• When the outside and interior cabin temperatures are moderate to high, the intake setting may default to turn off air recirculation to allow fresh air into the passenger compartment. You may notice air flow from the foot mode, bi-level mode, or side demist vent outlets for a maximum of 15 seconds. This may occur when the previous climate setting was turned off. This is not a malfunction. After the initial warm air is expelled, the intake will return to automatic control, the air flow outlet will return to previous settings, and operation will continue normally. To exit, press any climate control button.
• Keep the moonroof (if so equipped) closed while the air conditioner is in operation.
• If you feel that the air flow mode you have selected and the outlets the air is coming out do not match, select themode.
• When you change the air flow mode, you may feel air flow from the foot outlets for just a moment. This is not a malfunction.

Servicing air conditioner

The air conditioner system in your NISSAN vehicle is charged with a refrigerant designed with the environment in mind.

This refrigerant does not harm the earth's ozone layer.

Special charging equipment and lubricant is required when servicing your NISSAN air conditioner. Using improper refrigerants or lubricants will cause severe damage to your air conditioner system. For additional information, see "Air conditioner system refrigerant and oil recommendations".

It is recommended that you visit a NISSAN dealer to service your "environmentally friendly" air conditioner system.

WARNING

The air conditioner system contains refrigerant under high pressure. To avoid personal injury, any air conditioner service should be done only by an experienced technician with proper equipment.