Hyundai Santa Fe: Rear Glass Defogger / Rear Glass Defogger Switch. Repair procedures

Hyundai Santa Fe (TM) 2019-2025 Service Manual / Body Electrical System / Rear Glass Defogger / Rear Glass Defogger Switch. Repair procedures

Diagnosis with diagnostic tool

In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (diagnostic tool).

The diagnostic system (diagnostic tool) provides the following information.

(1)	Fault Code Searching : Checking failure and code number (DTC)

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

(3)	Actuation test : Checking the system operation condition

(4)	S/W Management : Controlling other features including system option setting and zero point adjustment

2.	If diagnose the vehicle by diagnostic tool, select "DTC Analysis" and "Vehicle".

3.	Select the 'Data Analysis' and 'Car model'.

4.	Select the 'IBU_BCM' to search the current state of the input/output data.

5.	To forcibly actuate the input value of the module to be checked, select option 'Actuation Test'.

Removal

1.	Disconnect the negative (-) battery terminal.

2.	Remove the audio unit or the AVN head unit. (Refer to Audio - "Audio Unit") (Refer to AVN system - "AVN Head Unit")

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

Installation

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

2.	Install the audio unit or the AVN head unit.

3.	Connect the negative (-) battery terminal.

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