Hyundai Elantra (CN7): Windshield defrosting and defogging / Auto defogging system (only for automatic climate control system)
Auto defogging helps reduce the possibility of fogging up the inside of the windshield by automatically sensing the moisture on inside the windshield.
The auto defogging system operates when the heater or air conditioning is on.
When the Auto Defogging System operates, the indicator will illuminate.
If a high amount of humidity is detected in the vehicle, the Auto Defogging System will be enabled.
The following steps will be performed automatically:
Step 1) The A/C button will turn ON.
Step 2) The air intake control will change to Fresh mode under low outside temperature.
Step 3) The mode will be changed to defrost to direct airflow to the windshield.
Step 4) The fan speed will be increased.
To cancel or reset the Auto Defogging System
Press the front windshield defroster button for 3 seconds when the ignition switch is in the ON position.
When the Auto Defogging System is canceled, defrost button indicator will blink 3 times.
When the Auto Defogging System is reset, defrost button indicator will blink 6 times without a signal.
Information
- When the air conditioning is turned on by Auto defogging system, if you try to turn off the air conditioning, the indicator will blink 3 times and the air conditioning will not be turned off.
- To maintain the effectiveness and efficiency of the Auto Defogging System, do not select Recirculation mode while the system is operating.
- When the Auto Defogging System is operating, the fan speed adjustment knob, the temperature adjustment knob, and the air intake control button are all disabled.
NOTICE
Do not remove the sensor cover located on the upper end of the driver side windshield glass.
Damage to system parts could occur and may not be covered by your vehicle warranty.
To help reduce the probability of fogging up the inside of the windshield, the air intake or air conditioning are controlled automatically according to certain conditions such as or position.
NOTICE To prevent damage to the conductors bonded to the inside surface of the rear window, never use sharp instruments or window cleaners containing abrasives to clean the window.
Other information:
Hyundai Elantra (CN7) 2021-2025 Service Manual: Evaporator Core
Repair procedures Replacement1.Disconnect the negative (-) battery terminal. 2.Remove the heater and blower assembly.(Refer to Heater - "Heater Unit") 3.Remove the heater core cover (A) after loosening the mounting screws.4.Pull out the evaporator core (A) from the heater unit.
Hyundai Elantra (CN7) 2021-2025 Service Manual: Climate Control Air Filter
Description and operation Description The climate control air filter is located in the blower unit. It eliminates foreign materials and odor. The particle filter performs a role as an odor filter as well as a conventional dust filter to ensure comfortable interior environment.
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