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Kia Sorento: Front Seat Unit Repair Procedures - Seat Electrical - Body Electrical SystemKia Sorento: Front Seat Unit Repair Procedures

Kia Sorento (MQ4, 2021-2026) Service Manual / Body Electrical System / Seat Electrical / Front Seat Unit Repair Procedures

Inspection
Driver/Passenger Seat Heater
1.
Check for continuity and measure the resistance between terminals.

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Inspection illustration

Pin
 Function
Heater
 Heater+Ventilation
1
 -
 NTC (+)
2
 -
 Ground
3
 Heater (+)
 NTC (-)
4
 NTC (+)
 Cushion heater (+)
5
 NTC (-)
 Back heater (+)
6
 Heater (-)
 Ground

Position
 NTC Sensor (± 5%)
Driver
 Passenger
High
 2.13 kΩ
 3.70 kΩ
Mid
 3.92 kΩ
 4.93 kΩ
Low
 6.44 kΩ
6.83 kΩ

2.
Operate the seat heater after connecting the connector, and then check the thermostat by measuring the temperature of seat surface.
Driver / Passenger
 Cushion/Back [± 2°C (35.6 °F)]
Position
 High
 42 / 50°C (107.6 / 122°F)
Mid
 39 / 45°C (102.2 / 113°F)
Low
 36 / 40°C (96.8 / 104°F)

Rear Seat Heater
1.
Check for continuity and measure the resistance between terminals.

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Inspection illustration

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

Position
 NTC Sensor (± 5%)
High
 2.87 kΩ
Low
 4.25 kΩ

2.
Operate the seat heater after connecting the connector, and then check the thermostat by measuring the temperature of seat surface.
Driver/Passenger
 Cushion/Back [± 2°C (35.6 °F)]
Position
 High
 42 / 50°C (107.6 / 122°F)
Low
 38 / 45°C (100.4 / 113°F)

Removal
Front Seat Heater/Ventilation Unit
1.
Remove the passenger's side front seat assembly.
(Refer to Body - "Front Seat Assembly")
2.
Disconnect the heater/ventilation unit connectors (A).

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Removal illustration

3.
Remove the seat heater unit (A) after removing the screws.

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Removal illustration

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Removal illustration

Front Power Seat Unit
1.
Remove the front seat assembly.
(Refer to Body - "Front Seat Assembly")
2.
Disconnect the power seat unit connector (A).
Driver side

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Removal illustration

Passenger side

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Removal illustration

3.
Remove the power seat unit (A) after removing the screws.
Driver side

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Removal illustration

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Removal illustration

Passenger side

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Removal illustration

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Removal illustration

Ventilation Seat Blower
1.
Remove the front seat assembly [Passenger].
(Refer to Body - "Front Seat Assembly")
2.
Disconnect the ventilation seat blower connector (B).
3.
Remove the ventilation seat blower (A) after removing the clips (C).

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Removal illustration

Lumbar Support Unit
1.
Disconnect the battery negative ( - ) terminal.
2.
Remove the front seat back cover.
(Refer to Body - "Front Seat Back Cover")
3.
Disconnect the lumbar support motor connector (A).
[Forward / Backward]

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Removal illustration

[Up / Down]

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Removal illustration

4.
Remove the fixing clip (A) from the front seat back frame.

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Removal illustration

5.
Remove the lumbar support assembly (B) after separating both of the fixing clips (A) on the front seat back frame.

Body Electrical System — Seat Electrical / Front Seat Unit / Repair Procedures / Removal illustration

Installation
1.
Install in the reverse order of removal.
2.
Perform Over The Air (OTA) controller S/W update with KDS.
(Refer to Security and Vehicle Ignition System - "Over The Air (OTA)")
Front Seat Switch Repair Procedures
Inspection [Front Seat] 1. Remove the console upper cover. (Refer to Body - "Console Upper Cover") ...
Rear Seat Switch Repair Procedures
Removal Front Seat (Passenger) 1. Disconnect the battery negative ( - ) terminal. 2. Remove the...
See also:

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