Hyundai Ioniq: Rear Glass Defogger / Rear Glass Defogger Switch. Repair procedures

Hyundai Ioniq (AE) 2017-2025 Service Manual / Body Electrical System / Rear Glass Defogger / Rear Glass Defogger Switch. Repair procedures

Inspection

The body electrocal system can be quickly diagnosed failed parts with vehicle diagnostic system(GDS).

The diagnostic system (GDS) provides the following information.

(1)	Self diagnosis : Checking the failure code (DTC) and display

(2)	Current data : Checking the system input/output data state

(3)	Actuation test : Checking the system operation condition

(4)	Additional function : Other controlling such as he system option and zero point

2.	Select the "Car Model" and the system to be checked in order to check the vehicle with the tester.

3.	Select the "Smart Junction Box (SJB)" to check the windshield deicer.

4.	Select the "Current Date" menu to search the current state of the input/output data. The input/output data for the sensors corresponding to the "Smart Junction Box(SJB)" can be checked.

5.	Select "Actuation Test", if you want to check the Smart Junction Box (SJB) data operation forcefully.

Removal

1.	Disconnect the negative (-) battery terminal.

2.	Remove the heater and A/C controll unit. (Refer to Heating, Ventilation, Air conditioning - "Heater & A/C Control Unit (Dual)")

Installation

1.	Install the heater and A/C control unit.

2.	Connect the negative (-) battery terminal.

Rear Glass Defogger Printed Heater. Repair procedures

Inspection • Wrap tin foil around the end of the voltmeter test lead to prevent damaging the heater line. Apply finger pressure on the tin foil, moving the tin foil along the grid line to check for open circuits...

Windshield Wiper/Washer

Other information:

Hyundai Ioniq (AE) 2017-2025 Owner's Manual: LKA system activation

To see the LKA system screen on the LCD display in the cluster, select SCC/LKA mode () for cluster type A or ASSIST mode () for cluster type B. For more information, refer to "LCD Display Modes" in chapter 3. When both lane markers are detected and all the conditions to activate the LKA system are satisfied, a green steering wheel indicator will illuminate and the LKA system indicator light will change from white to green...

Hyundai Ioniq (AE) 2017-2025 Owner's Manual: Good Driving Practices

Never move the shift lever from P (Park) or N (Neutral) to any other position with the accelerator pedal depressed. Never move the shift lever into P (Park) when the vehicle is in motion. Be sure the vehicle is completely stopped before you attempt to shift into R (Reverse) or D (Drive)...