Hyundai Elantra (CN7): Convenient Features / Windshield defrosting and defogging

WARNING

Windshield heating

Do not use the or position during cooling operation in extremely humid weather. The difference between the temperature of the outside air and that of the windshield could cause the outer surface of the windshield to fog up, causing loss of visibility. In this case, set the mode selection knob or button to the position and fan speed control knob or button to lower speed.

  • For maximum defrost performance, set the temperature control knob to the highest temperature setting (rotated all the way to the right) and the fan speed control to the highest setting.
  • If warm air to the floor is desired while defrosting or defogging, set the mode to the floor-defrost position.
  • Before driving, clear all snow and ice from the windshield, rear window, side view mirrors, and all side windows.
  • Clear all snow and ice from the hood and air inlet in the cowl grill to improve heater and defroster efficiency and to reduce the probability of fogging up inside of the windshield.

Cabin air filter [A] : Outside air, [B] : Recirculated air [C] : Cabin air filter, [D] : Blower [E] : Evaporator core, [F] : Heater core The cabin air filter is installed behind the glove box.

To defog inside windshield [A] : Type A, [B] : Type B 1. Select any fan speed except “0” position. 2. Select the desired temperature. 3. Select the or position.

Other information:

Hyundai Elantra (CN7) 2021-2025 Service Manual: In-car Sensor

Description and operation DescriptionThe In-car air temperature sensor is built in the heater & A/C control unit.The sensor contains a thermistor which measures the temperature of the inside. The signal decided by the resistance value which changes in accordance with perceived inside temperature, is delivered to heater control unit and accor

Hyundai Elantra (CN7) 2021-2025 Service Manual: Heater 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 heater core (A) from the heater unit.

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