Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2016 Hyundai Azera BaseFACTORY OEM SERVICE PROCEDURE

Defroster Control

Fig 1: Defroster Control Communication Diagram

Courtesy of HYUNDAI MOTOR AMERICA

Function	Characteristics	Name
Function	Characteristics	Signal Label	Spec. Designation
Input	Logic	L_DefrosterSW	Defroster Switch
	Analog	A_IGN1	Ignition 1 Signal
	Analog	V_Bat	Battery Voltage
	CAN_C Communication	CF_Clu_AltLStatus	Engine is running
Output	Logic	O_Defroster	Defroster Output

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Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.