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 Forte LXSFACTORY OEM SERVICE PROCEDURE
Smart Key Unit DTCS
SMART KEY UNIT DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| DTC B1603 | 00: CAN Bus OFF |
| DTC B16A8 | 00: Interior Antenna #1 Failure |
| DTC B16A9 | 00: Interior Antenna #2 Failure |
| DTC B16AA | 00: Interior Antenna #3 Failure |
| DTC B16AB | 00: Bumper Antenna Failure |
| DTC B16AC | 00: Driver Side Door Handle Antenna Failure |
| DTC B16AD | 00: Passenger Side Door Handle Antenna Failure |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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