Hyundai Ioniq: Windshield Defrosting and Defogging / Auto Defogging System

Auto defogging system reduces 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 high levels of moisture are sensed in the vehicle, the Auto Defogging System
will operate in the following order:
Step 1 : Outside air position
Step 2 : Operating the air conditioning
Step 3 : Blowing air toward the windshield
Step 4 : Increasing air flow toward the windshield
If the air conditioning is off or recirculated air position is manually selected
while Auto Defogging System is ON, the Auto Defogging System Indicator will blink
3 times to signal that the manual operation has been canceled.
To cancel or reset the Auto Defogging System
Press the front windshield defroster button for 3 seconds when the Engine Start/Stop
button is in the ON position. When the Auto Defogging System is canceled, the ADS
OFF symbol will blink 3 times and ADS OFF will be displayed on the climate control
information screen.
When the Auto Defogging System is reset, the ADS OFF symbol 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.
- For efficiency, do not select recirculated air position while the Auto
defogging system is operating.
- When Auto defogging mode is selected, fan speed, temperature and intake
mode which is adjusted manually are canceled for better defogging result.
NOTICE
Do not remove the sensor cover located on the upper end of the windshield
glass.
Damage to system parts could occur and may not be covered by your vehicle
warranty.
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...
Automatic Ventilation
When the Engine Start/Stop button is in the ON position or when the vehicle is
in the ready () mode and temperature
is below 59°F (15°C) with the recirculated air position selected more than five
minutes, the air intake position will automatically change to the outside (fresh)
air position...
Other information:
Troubleshooting
Error Item
Failure symptom
Inspection items
Detailed inspections
Relevant Parts/
Components
Screen displayTFT-LCD screen does not turn on1)Connector attachments2)Components1)Check the connector attachments2)Check B+, IGN and GND wiring3)Check the components Connectors, wiring, fuses, dashboardWarning lightAirbag warning lamp malfunction1)Connector attachments2)C-CAN3)Components1)Check airbag + signal (connectors)2)Check C-CAN (ACU4) signal3)Check the FPC attachment inside the dashboardACU Connectors, wiring, fuses, dashboardMode conversionIntegrated driving mode malfunction1)Connector attachments2)Switch3)Components1)Check the switch input (connector)2)Check the switch signal input(disconnection or shorting)3)Check conversion with dashboard componentSwitch connector, wiring dashboardIlluminationInterior light brightness cannot be controlled...
C..