Kia Optima DL3: Body Electrical System / Smart Key System

Kia Optima DL3 2019-2026 Service and Repair Manual / Body Electrical System / Smart Key System

Specifications

Smart Key Unit

Items	Specification
Rated voltage	DC 12 V
Operation voltage	DC 9 - 16 V
Operation temperature	-40 to 185°F (-40 to 85°C)

RF Receiver

Items	Specification
Frequency	433.92 MHz
Antenna type	FSK

Smart Key

Items

Specification

Battery

Lithium battery 3V 1 unit

Distance

- The distance over which Radio Frequency (RF) Receiver can receive a FOB transmission signal : 30m
- The distance over which Low Frequency (LF) antenna(Outer Handle/ Tailgate ) can detect FOB : 0.7m

Battery life

More than 2 years (10 times / a day)

•	An inappropriately disposed battery can be harmful to the environment and human health.

•	Dispose the battery according to your local law(s) or regulation.

Push buttons

4 (Door lock / unlock, Trunk open, Remote start)

Frequency (Rx)

125 kHz

Frequency (Tx)

433.92 MHz

Numbers

2 units

Antenna

Items	Specification
Rated voltage	DC 12 V
Operating voltage	DC 9 - 16 V
Operation temperature	-22 to 176°F (-30 to 80°C)
Frequency	125kHz
Numbers	Interior (3 units), Door (2 units), Front bumper beam (1 unit), Rear bumper (1 unit)

Components and components location

Components (1)

1. Integrated body control unit (IBU)
2. Interior antenna 1
3. Interior antenna 2

4. Buzzer
5. Door handle & door antenna
6. Front door antenna

Components (2)

1. Trunk open switch
2. Front antenna

3. Interior antenna 3
4. Exterior bumper antenna

❮Relaxion Comfort Seat

Components and components location Component Location 1. Relaxion comfort switch 2. Walk-in switch 3. Relaxion comfort seat unit (RCSU) Schematic diagrams Connector and Terminal Function Pin Function Connector A Connector B 1 Battery (+) Slide motor switch (Forward) 2 Slide motor (Forward) Slide motor switch (Backward) 3 Slide motor (Backward) Relaxion comfort switch (Forward) 4 Recline motor (Forward) Relaxion comfort switch (Backward) 5 Recline motor (Backward) Rear height motor switch (Up) 6 Ground Rear height motor switch (Down) 7 Battery (+) Relaxion comfort switch 8 - Return switch 9 Rear height motor (Up) - 10 Rear height motor (Down) - 11 - Sensor power 12 Ground IGN2 13 IGN1 14 ECU (Battery +) 15 Walk-in switch Slide (Forward) 16 Walk-in switch Slide (Backward) 17 Walk-in switch Recline (Forward) 18 Walk-in switch Recline (Backward) 19 Walk-in relaxion comfort switch 20 Walk-in return switch 21 ECU (Ground) 22 - 23 - 24 Limit set power 25 Slide motor sensor 26 Recline motor sensor 27 Rear height motor sensor 28 Virtual limit set switch Repair procedures Removal Walk-in Switch 1.

Smart Key❯

Repair procedures Adjustment Smart Key Code Saving 1. Connect the VCI II in driver side crash pad lower panel, turn the power on KDS.

Other information:

Kia Optima DL3 2019-2026 Service and Repair Manual: Smart Key Unit

Schematic diagrams Connector and Terminal Function Pin Function Connector A Connector B Connector C Connector D 1 - Front washer switch (Output) - Driver outside handle switch (Input)

Kia Optima DL3 2019-2026 Service and Repair Manual: In-car Sensor