Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Kia Seltos EXFACTORY OEM SERVICE PROCEDURE
Connector And Terminal Function
| Pin | Function | |||
|---|---|---|---|---|
| Connector A | Connector B | Connector C | Connector D | |
| 1 | ESCL (+) (Output) | - | - | - |
| 2 | Front heated nozzle (Output) | - | - | - |
| 3 | Rear washer switch (Input) | - | Mirror fold (Output) | - |
| 4 | Front washer switch (Input) | - | - | - |
| 5 | - | LIN1 (PDW-R) | - | ESCL Enable (Output) |
| 6 | Ground (Power) | PDW-R Power (Input) | Dedicated DRL option (Input) | RPM (Input) |
| 7 | Ground (ECU) | PDW-R Power (Output) | - | Starter relay (Output) |
| 8 | ESCL (-) (Output) | PDW-F Power (Output) | Rear seat belt indicator_Left (Output) | ACC relay (Output) |
| 9 | Battery + (ECU) | AT Solenoid (Output) | Auto light sensor ground (Output) | Start feed back (Input) |
| 10 | Battery + (Power) | Headlamp high switch (Input) | RVM Switch (Input) | SSB Switch 2 (Input) |
| 11 | IGN1 (Input) | Front wiper switch (Input) | PDW-R Switch (Input) | Tailgate interior antenna 3 (-) (Output) |
| 12 | Kline Immobilizer | Front wiper volume switch (Input) | 'P' position (Input) | Interior antenna 1 (-) (Output) |
| 13 | - | Wiper parking switch (Input) | Assist outside handle switch (Input) | - |
| 14 | - | External buzzer (Output) | Multifunction switch ground (Input) | Assist outside handle antenna (-) (Output) |
| 15 | - | PDW-R Indicator switch (Output) | ACC (Input) | - |
| 16 | - | - | IGN2 (Input) | - |
| 17 | - | Front wiper low back up switch (Input) | - | |
| 18 | - | Brake switch (Input) | Driver outside handle antenna (-) (Output) | |
| 19 | - | - | Immobilizer antenna ground (Output) | |
| 20 | - | - | - | |
| 21 | - | - | - | |
| 22 | LIN3 (Rain sensor) | PDW Option (Input) | - | |
| 23 | - | Mirror unfold (Output) | - | |
| 24 | - | - | - | |
| 25 | Front wiper low relay (Output) | - | - | |
| 26 | Front wiper high relay (Output) | - | Wheel speed sensor (Input) | |
| 27 | Rear wiper relay (Output) | Rear seat belt indicator_Center (Output) | IGN2 relay (Output) | |
| 28 | Fog switch (Input) | Rear seat belt indicator_Right (Output) | IGN1 relay (Output) | |
| 29 | Light switch (Input) | Auto light sensor power (Output) | SSB symbol illumination (+) (Output) | |
| 30 | Rear wiper switch (Input) | Auto light sensor signal (Input) | SSB switch 1 (Input) | |
| 31 | - | Sun roof status (Input) | Tailgate interior antenna 3 (+) (Output) | |
| 32 | - | ESCL Unlock switch (Input) | Interior antenna 1 (+) (Output) | |
| 33 | ESCL COM | Clutch ignition lock switch (Input) | - | |
| 34 | EMS ECU Wake Up (Output) Door unlock signal (For IFU) (Output) | Driver outside handle switch (+) (Input) | Assist outside handle antenna (+) (Output) | |
| 35 | - | B-CAN (High) | - | |
| 36 | - | B-CAN (Low) | - | |
| 37 | P-CAN (High) | - | ||
| 38 | P-CAN (Low) | Driver outside handle antenna (+) (Output) | ||
| 39 | - | Immobilizer antenna power (Output) | ||
| 40 | - | - | ||
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.