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 L4-2.4L HybridFACTORY OEM SERVICE PROCEDURE
Hybrid Control System
Specifications
Hybrid Control System
Brake Switch
- Type: ON/OFF Switch
- Specification
Clutch Pressure Sensor (CPS)
- Type: Piezo-Resistive Pressure Sensor
- Specification (Vref = 5.0V)
DC Fuse
- Specification
High Voltage Battery System
Battery Pack Assembly
- Type: LIPB (Lithium ion Polymer Battery), Pouch type
- Specification
[General Specification]
NOTE:
1. Rated Voltage: Terminal voltage at Rated 1C discharge, SOC 55%, 20°C (68°F)
2. Rated Energy = Rated Voltage • Nominal Capacity
[Operational Specification]
Power Relay Assembly (PRA)
- Specification
High Voltage Battery Control System
Safety Plug
- Specification
Main Relay
- Specification
Pre-Charge Relay
- Specification
Pre-Charge Resistor
- Specification
Battery Current Sensor
- Specification
Battery Temperature Sensor (HEV)
- Type: Thermistor type
- Specification
[Air Inlet]
[Cell]
Auxiliary Battery Temperature Sensor
- Type: Thermistor type
- Specification
High Voltage Battery Cooling System
Cooling Fan
- Specification
Low Voltage DC/DC Converter (LDC)
Low Voltage DC/DC Converter (LDC)
- Specification
Tightening Torques
Hybrid Control System
High Voltage Battery System
High Voltage Battery Control System
High Voltage Battery Cooling System
Low Voltage DC/DC Converter (LDC)
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.