Seat Heater Unit Diagnosis Mode

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 three seconds before pressing it once again for more than 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.

Driver/Passenger Seat Heater

G13054313

Courtesy of HYUNDAI MOTOR AMERICA

Failure Indicator	Inspection Items	Detailed Inspections
HIGH: ON MID: Flashing LOW: Flashing	Low voltage detection	IGN1 voltage of 8.5 V or lower
HIGH: ON MID: Flashing LOW: Flashing	Over voltage detection	IGN1 voltage of 16.5 V or lower
HIGH: ON MID: Flashing LOW: OFF	Fuse (Disconnector)	Disconnection in the IGN fuse
HIGH: Flashing MID: ON LOW: OFF	NTC (Disconnector)	HEATER CHSU/BACK Disconnection Disconnection in the NTC (+) wiring Disconnection in the NTC (-) wiring Disconnection in the heating wire (+) Disconnection in the heating wire (-)
High: OFF MID: ON LOW: Flashing	NTC (Short)	Short-circuit in the NTC (+)/NTC (-) wiring Short-circuit in the NTC (+)/Heater (-) wiring Short-circuit in the Heater (+)/Heater (-) wiring Short-circuit in the Heater (+)/NTC (-) wiring Short-circuit in the NTC (+)/NTC (-) wiring Short-circuit in the NTC (+)/Heater (-) wiring Short-circuit in the Heater (+)/Heater (-) wiring
HIGH: Flashing MID: ON LOW: OFF	NTC (Short)	Short-circuit in the NTC/heating wire (+)
HIGH: Flashing MID: ON LOW: Flashing	Loss of temperature feedback	Target temperature not reached within 40 minutes

You can check the malfunctioning by checking the blinking LED.
Pressing the IGN OFF button will end the diagnosis mode for the heater seat.
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.