Hyundai Elantra: Seat Electrical / Seat Heater
Components and components location
[Front Seat Heater]

1. Seat heater unit (Passenger only) 2. Seat cushion heater
| 3. Seat back heater
|
[Rear Seat Heater]

1. Seat heater unit
| 2. Seat cushion heater
|
Schematic diagrams
[Front Seat Heater (Non-Air Ventilation)]

[Rear Seat Heater]

Repair procedures
Front Seat Heater
1. | Check for continuity and measure the resistance between terminals No 3 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 Low (Cushion) : 42±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 three seconds before pressing it once againe for more than 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. [Driver / Passenger Seat Heater] 
Failure Indicator
| Inspection Items
| Detailed Inspections
| Low : OFF Mid : OFF High : FLASHING
| Low voltage detection
| –
| IGN1 voltage of 8.5 V or lower |
| Over voltage detection
| –
| IGN1 voltage of 16.5 V or lower |
| Low : FLASHING Mid : FLASHING High : FLASHING
| Fuse (Short)
| –
| Disconnection or missing connector of heating seat B(+) line |
| Low : OFF Mid : ON High : FLASHING
| NTC (Short / Disconnector)
| –
| Short-circuit between NTC connector terminals |
–
| Disconnection in the NTC (+) wiring |
–
| Disconnection in the NTC (-) wiring |
| Low : FLASHING Mid : FLASHING High : FLASHING
| Heater (Short / Disconnector)
| –
| Heating wire element failure |
–
| Short-circuit between heating wire connector terminals |
–
| Disconnection in the heating wire (+) |
–
| Disconnection in the heating wire (-) |
| Low : ON Mid : ON High : FLASHING
| Loss of temperature feedback
| –
| Target temperature not reached within 40 minutes |
|
[Rear Seat He7ater] 
Failure Indicator
| Inspection Items
| Detailed Inspections
| Low : OFF High : OFF
| Low voltage detection
| –
| IGN1 voltage of 8.5 V or lower |
| Over voltage detection
| –
| IGN1 voltage of 16.5 V or lower |
| Low : FLASHING High : FLASHING
| Fuse (Short)
| –
| Disconnection or missing connector of heating seat B(+) line |
| Low : OFF High : FLASHING
| NTC (Short / Disconnector)
| –
| Short-circuit between NTC connector terminals |
–
| Disconnection in the NTC (+) wiring |
–
| Disconnection in the NTC (-) wiring |
| Low : FLASHING High : FLASHING
| Heater (Short / Disconnector)
| –
| Heating wire element failure |
–
| Short-circuit between heating wire connector terminals |
–
| Disconnection in the heating wire (+) |
–
| Disconnection in the heating wire (-) |
| Low : ON High : FLASHING
| Loss of temperature feedback
| –
| Target temperature not reached within 40 minutes |
|
|
4. | You can check the malfunctioning by checking the blinking LED. |
5. | Pressing the IGN OFF button will end the diagnosis mode for the heater seat. |
6. | 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. |
Repair procedures
Removal1.Disconnect the negative (-) battery terminal.2.Remove the front seat outer shield cover.(Refer to Body - "Front Seat Outer Shield Cover")3...
Components and components location
Components1. Driver seat heater switch2. Passenger seat heater swtich3. 2nd seat heater switch
Schematic diagrams
Circuit DiagramManual Seat Heater SwitchConnector Pin Information[Connector A]
Pin No
Function
Pin No
Function
1Low ..
Other information:
Components and components location
Component Location 1. Inside rear view mirror
Repair procedures
Replacement
•
When removing with a flat - tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components. •
Put on gloves to prevent hand injuries.1.Remove the inside rear view mirror cove..
Components and components location
Components1. Clutch pedal arm2. Clip3. Push rod pin4. Clutch pedal assembly5. Clutch master cylinder6. Clip
Repair procedures
Removal1.Remove the air cleaner assembly and air duct.(Refer to Engine Mechnical System - "Air Cleaner")2.Remove the battery and battery tray.(Refer to Engine Electrical System - "Battery") 3.Pull the snap pin (A) and then sepa..