Hyundai Sonata: Seat Electrical / Seat Heater Repair procedures

Inspection
Front Seat Heater
1.
Check for continuity and measure the resistance between terminals No 3 and No 6.


Standard value
Driver / Assists (cushion + back) : 1.58±10%

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

Front Seat Heater (Air Ventilation)
1.
Check for continuity and measure the resistance between terminals.


Standard value
Cushion (Teminal : 4-6) : 2.94?±10%
Back (Teminal : 5-6) : 2.71?±10%

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 : 2.82?±10%

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 Schematic Diagrams
Circuit Diagram ...

Seat Heater Switch Components and Components Location
Components ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Inspection 1. After disconnecting the vapor hose from the PCV valve, remove the PCV valve. 2. Reconnect the PCV valve to the vapor hose. 3. Inspect the PCV vlave operation. (1) Run the engine at idle. (2) Put a finger on the open end of the PCV valve. (3) Make sure that intake ...

Hyundai Sonata LF 2014-2019 Service Manual: Rear Seat Back Cover Components and Components Location
Component Location 1. Rear seat back cover [LH]2. Rear seat back cover [RH] ...

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