Kia Sportage: Seat Electrical / Seat Heater Repair procedures

Kia Sportage QL (2015-2025) Service Manual / Body Electrical System / Seat Electrical / Seat Heater Repair procedures

Inspection

Front Seat Heater

Check for continuity and measure the resistance between terminals No 4 and No 6.

Standard value

Driver / Assists (cushion + back) : 1.65Ω±10%/23°C

Operate the seat heater after connecting the connector, and then check the thermostat by measuring the temperature of seat surface.

Standard value

1st : cushion : 36±2°C, back : 40±2°C

2st : cushion : 39±2°C, back : 45±2°C

3st : cushion : 42±2°C, back : 50±2°C

Rear Seat Heater

Check for continuity and measure the resistance between terminals No 1 and No 4.

Standard value

Rear seat : 1.67Ω±10%/20°C

Operate the seat heater after connecting the connector, and then check the thermostat by measuring the temperature of seat surface.

Standard value

High (Cushion) : 38±2°C, back : 45±2°C

Low (Cushion) : 42±2°C, back : 50±2°C

Seat Heater Unit Diagnosis Mode

1.	You can enter the diagnosis mode by turning the seat heater button on.

You can enter the diagnosis mode by referring to following description.

•	Push IGN ON while pressing the seat heater button from IGN OFF.

•	Keep pressing IGN ON for more than threeseconds before pressing it once again for morethan three seconds within 2 seconds.

•	All LED indicators on the driver and passenger seat button will blink 1 times.

After entering the diagnosis mode, you can check what failed by checking the blinking LED.

Failure Indicator		Inspection Items	Detailed Inspections
	Low : ON Mid : FLASHING High : FLASHING	Low voltage detection Over voltage detection	1) Check the IGN1 power line
	Low : FLASHING Mid : OFF High : ON	Power disconnection of seat heating wire (disconnector)	1) Disconnection or missing connector of heating seat B(+) line
	Low : OFF Mid : FLASHING High : ON	Power disconnection of seat heating wire (disconnector)	1) Disconnection or missing connector of heating seat IGN2 line
	Low : OFF Mid : ON High : FLASHING	NTC (disconnector) / Heater (disconnector)	1) NTC (disconnector) 2) Disconnection or missing connector of NTC 3) Disconnection or missing connector of heating seat power line
	Low : FLASHING Mid : ON High : OFF	NTC (short) / Heater (short)	1) Short circuit of NTC wire (short) 2) Short circuit of seat heating wire (short)
	Low : FLASHING Mid : ON High : FLASHING	Loss of temperature feedback	1) Check the NTC terminal

4.	You can check the malfunctioning by checking the blinking LED.

5.	The seat heater unit will record the malfunctioning that occurred.

6.	If you press the seat heater button for more than five seconds, the LED for malfunctioning memory will blink four times and the recorded memory will be deleted.

7.	Pressing the IGN OFF button will end the diagnosis mode for the ventilating seat.

8.	You can check whether the heating seat system works properly after turning the IGN ON. If you want to check the error code, you can refer to the procedure of 2 above.

Seat Heater Schematic diagrams

Circuit Diagram Front Seat Heater Rear Seat Heater ...

Seat Heater Switch Components and components location

Components Front Seat Switch 1. Driver side seat heater switch 2. Passenger side seat heater switch Rear Seat Switch ...

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