Kia Sportage: Seat Electrical / Seat Heater Repair procedures

Kia Sportage QL (2015-2019) Service Manual / Body Electrical System / Seat Electrical / Seat Heater Repair procedures

Inspection
Front Seat Heater
1.
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
2.
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
1.
Check for continuity and measure the resistance between terminals No 1 and No 4.

Standard value
Rear seat : 1.67Ω±10%/20°C
2.
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.
2.
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.
3.
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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