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: Troubleshooting
Troubleshooting Problem Symptoms Table Use the table below to help you find the cause of the problem. The numbers indicate the priority of the like cause of the problem. Check each part in order. If necessary, replace these parts. SymptomSuspect AreaReferenceLower pedal or spongy pedal ...

Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Component Location 1. Fuel filler door ...

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