Hyundai Elantra: Air Conditioning System / Auto Defogging Sensor Description and Operation

Description
The auto defogging sensor is installed on the front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging. The air conditioner control module receives signal from the sensor and restrains moisture and eliminate defog by controlling the intake actuator, A/C, auto defogging actuator, blower motor rpm, and mode actuator.
Ambient Temperature Sensor Repair procedures
Inspection 1. Check the resistance of the ambient temperature sensor between terminals 1 and 2 whether it changes by changing the ambient temperature. 1. Ambient Sensor (+)2. Sensor ground ...

Auto Defogging Sensor Repair procedures
Diagnosis With GDS 1. The heating, ventilation and air conditioning can be quickly diagnosed failed parts with vehicle diagnostic system (GDS). ? The diagnostic system (GDS) provides the follow ...

Other information:

Hyundai Elantra AD (2016-2020) Owners Manual: Before Driving
Before Entering the Vehicle Be sure all windows, outside mirror( s), and outside lights are clean and unobstructed. Remove frost, snow, or ice. Visually check the tires for uneven wear and damage. Check under the vehicle for any sign of leaks. Be sure there are no obstacles behind you ...

Hyundai Elantra AD (2016-2020) Service Manual: Heater & A/C Control Unit (Manual) Repair procedures
Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the glove box upper cover assembly. (Refer to Body - "Glove Box Upper Cover Assembly") 3. Loosen the mounting screws and remove the crash pad center lower cover [LH](A). 4. After loosening the mounting screws, r ...

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