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.
2012 Kia Optima SXFACTORY OEM SERVICE PROCEDURE
Section 40 (Body Control Module (BCM) - HEV)
WARNING: This page is about a different variant/trim than selected.
- Specifications
- Components and Components Location
- Schematic Diagrams
- Description and Operation
- Description
- Function
- Wiper Control
- Front Wiper Mist Function Wiper
- Variable Int Wiper
- Buzzer Control
- Buzzer Sound
- Seat belt reminder (Driver seat)
- Seat belt reminder (Assist seat)
- Key Operated Warning
- ID Out Warning (SMK)
- SSB Switch Warning (SMK)
- Vehicle Not P Warning (SMK)
- IGN Key Hole Illumination
- Function Description
- Defogger & Deicer Timer Control
- Defogger & Front Deicer Timer
- Decayed Room Lamp & Keyless Unlock Timer
- Description Of State
- Glove Box Lamp Control
- Glove Box Lamp Off State
- Glove Box Lamp On For 15Min State
- Power Window Timer
- Door Lock/unlock Control
- Central Door Lock/unlock
- 2-Turn Unlock
- 2-Turn Unlock (SMK)
- IGN Key Reminder
- Passive Key Reminder Unlock (SMK)
- Crash Door Unlock
- Auto Door Lock/unlock Control (User Option)
- Auto Door Lock By Shift Lever Change
- Auto Door Unlock By Key In Condition
- Auto Door Unlock (Only SMK)
- Auto Door Unlock By Driver Door Unlock State (User Option)
- Auto Door Unlock By Shift Lever Change
- Trunk Release Relay Control
- Key Interlock Control
- Tail Lamp Function In/out
- Head Lamp Function IN/OUT
- Auto Light Control
- Auto Light Control Function In/out
- Front Fog Lamp Control
- Front Fog Lamp Function In/out
- Repair procedures
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.