Hyundai Santa Cruz Owners & Service Manuals

Hyundai Santa Cruz: Seat Electrical / Seat Heater (Non-Air Ventilation)

- Components

1. Seat heater unit
2. Seat cushion heater
3. Seat back heater


- Components Driver/Passenger Seat Heater

- Inspection Driver/Passenger

1.Check for continuity and measure the resistance between terminals.

NoDescription NoDescription
1-4NTC (+)
2-5Heater (-)
3Heater (+)6NTC (-)

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

Driver/PassengerCushion/BackNTC Resistance (kΩ)
High42/50 °C4.24 kΩ
Mid39/45 °C6.4 kΩ
Low36/40 °C9.62 kΩ

Diasgnosis mode

1.Enter the diagnostic mode referring to below description.

• In failure mode, press the ventilation seat button for 4 seconds and release it.

• Press the ventilation seat button for 2 seconds and release it.

• Lastly, press the ventilation seat button for 4 seconds and release it.

• When entering the failure mode, the LED of the ventilation seat button turns ON/OFF/blinks at each stage.

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

3.The table below indicates the failure based on priority, upper item means higher priority.

4.If more than one failure is detected, higher priority failure is displayed through the LED flashing pattern.

5.Lower priority failure will be displays if higher priority failure is reset.[Heater Switch]

[Driver/Passenger]
Failure indicatorInspection itemsDetailed inspections
High : ON
Middle : FLASHING
Low : FLASHING (Low/Over voltage detection)
Low : OFF (Fuse disconnection)
Low voltage detection
Over voltage detection
Fuse disconnection
1) IGN1 Less than 8.5V
2) IGN1 Less than 16.5V
3) IGN2 fuse disconnection
High : FLASHING
Middle : ON
Low : OFF
Detection of NTC/Heater disconnect - NTC element failure
- Heater mat disconnection
1) Cushion/Seat back heater mat disconnection
2) Disconnection in the NTC (+) wiring
3) Disconnection in the NTC (-) wiring
4) Disconnection in the heating wire (+)
5) Disconnection in the heating wire (-)
High : OFF
Middle : ON
Low : FLASHING
Short of between the connector terminalsDisconnection in the NTC (+)/NTC (-) wiring
High : OFF
Middle : ON
Low : FLASHING
Short in the NTC (+)/Heater(-) wiring
High : OFF
Middle : ON
Low : FLASHING
Short of between the connector terminals1) Short in the NTC (+)/Heater(-) wiring
2) Short in the Heater (+)/Heater(-) wiring
3) Short in the Heater (+)/NTC(-) wiring
Heater wiring short4) Disconnection in the NTC (+)/NTC (-) wiring
High : FLASHING
Middle : ON
Low : OFF
Heater wiring shortShort in the Heater (+)/NTC(+) wiring
High : OFF
Middle : ON
Low : FLASHING
Heater wiring short1) Short in the NTC(+)/Heater (-) wiring
2) Short in the Heater (+)/Heater(-) wiring
3) Short in the Heater (+)/NTC(-) wiring
High : FLASHING
Middle : ON
Low : FLASHING
Loss of temperature feedbackTarget temperature not reached within 40 minutes

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 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.

- Removal Seat Cushion Heater

1.Disconnect the negative (-) battery terminal.

2.Remove the cushion assembly after separating the seat cusion cover.(Refer to Body - "Front Seat Cushion Cover")

Seat Back Heater

1.Disconnect the negative (-) battery terminal.

2.Remove the seat back cover.(Refer to Body - "Front Seat Back Cover")

- Installation

1.Install the seat cover with seat cushion/back assembly.

2.Install the front/rear seat.

3.Connect the negative (+) battery terminal.

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