Kia Optima DL3: Seat Electrical / Ventilated and Heated Seat

Kia Optima DL3 2019-2026 Service and Repair Manual / Body Electrical System / Seat Electrical / Ventilated and Heated Seat

Schematic diagrams

Connector and Terminal Function

Pin	Function
Pin	Connector A	Connector B
1	Driver heater ground (-)	Driver blower speed (+)
2	Passenger heater ground (-)	-
3	Driver cushion heater power (+)	CAN (Low)
4	Driver back heater power (+)	CAN (High)
5	Passenger cushion heater power (+)	-
6	Passenger back heater power (+)	LIN
7	ECU (Ground)	Detent
8	ECU (Ground)	IGN1
9		Driver blower speed
10		Passenger blower speed
11		Illumination (-)
12		Driver NTC (-)
13		Passenger NTC (-)
14		-
15		-
16		-
17		-
18		-
19		-
20		IGN2
21		-
22		Driver NTC (+)
23		Passenger NTC (+)
24		-

Repair procedures

Removal

Ventilation Seat Unit

1.	Remove the heater unit. (Refer to Seat Electrical - "Heated Seats Only")

Ventilation Seat Blower

1.	Disconnect the negative battery terminal.

2.	Remove the front seat assembly. (Refer to Body - "Front Seat Assembly")

3.	Disconnect the ventilation seat blower connector (A).

4.	Remove the ventilation seat blower (B) by removing the clips.

Installation

1.	Install in the reverse order of removal.

❮Ventilated and Heated Seat Switch

Schematic diagrams Connector and Terminal Function [Front Seat] [Ventilation+Heater Type / Non-Heater Type] Pin Function Pin Function Ventilation+Heater Type Non-Heater Type Ventilation+Heater Type Non-Heater Type 1 IGN1 - 9 Illumination (+) 2 - - 10 - 3 - - 11 Illumination (-) 4 Ground - 12 - 5 - 13 Steering heater mode - 6 - 14 Steering heater indicator - 7 LIN - 15 Driver mode switch (CW) 8 Ground 16 Driver mode switch (CCW) [Heater Type] Pin Function Pin Function 1 Heater indicator (High)_RH 13 Heater mode_RH 2 Heater indicator (Mid)_RH 14 - 3 Heater indicator (Low)_RH 15 - 4 - 16 Ground 5 Driver mode switch (CW) 17 - 6 Driver mode switch (CCW) 18 Illumination (-) 7 Steering heater mode 19 - 8 Steering heater indicator 20 Illumination (+) 9 Heater mode_LH 21 - 10 Heater indicator (High)_LH 22 - 11 Heater indicator (Mid)_LH 23 - 12 Heater indicator (Low)_LH 24 - [Rear Seat] [Safety Type] Pin Function Pin Function 1 Ground (Illumination -) 5 Ground 2 Door lock switch 6 Door lock indicator 3 Door unlock switch 7 Safety power window 4 Battery + (Illumination +) 8 - [Manual Type] Pin Function Pin Function 1 Ground 7 Driver window down 2 Seat warmer (High) 8 Window enble 3 Window down motor 9 Ground (Illumination -) 4 Seat warmer (Low) 10 Driver window up 5 Window up motor 11 Battery + (Illumination +) 6 Seat warmer switch 12 Battery (+) Repair procedures Inspection [Front Seat] 1.

Lumbar Support System❯

Repair procedures Inspection 1. Remove the front seat back. (Refer to Body - "Front Seat Back Cover") 2.

Other information:

Kia Optima DL3 2019-2026 Service and Repair Manual: Lumbar Support System

Repair procedures Inspection 1. Remove the front seat back. (Refer to Body - "Front Seat Back Cover") 2. Disconnect the connector (A). 3. When the battery power is supplied to the motor connector, check the motor for smooth operation.

Kia Optima DL3 2019-2026 Service and Repair Manual: Power Seat Control Switch