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.
2020 Kia Optima Plug-In Hybrid EXFACTORY OEM SERVICE PROCEDURE
External Pages
These are pages that do not belong to the exact selected vehicle (2020 Kia Optima Plug-In Hybrid EX), but are still accessible from a link in your vehicle's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle.
- Different variant/trim
- Section 1 (Advanced Smart Cruise Control System (HEV))
- Section 2 (Front Bumper And Active Air Flap (HEV))
- Section 3 (Steering Wheel (HEV))
- Section 4 (Engine Control/Fuel System - General Information (HEV))
- Section 5 (Trunk Trim (HEV))
- Section 6 (Intake And Exhaust System (HEV))
- Section 7 (Engine Electrical System - General Information (HEV))
- Section 8 (Fuel Delivery System (HEV))
- Section 9 (Immobilizer System (HEV))
- Section 10 (Engine Control System (HEV))
- Section 11 (Engine Cooling System (HEV))
- Section 12 (Rear Parking Assist System (HEV))
- Section 13 (Rear Bumper (HEV))
- Section 14 (Floor Console (HEV))
- Section 15 (Smart Key Code Saving Diagnosis (HEV))
- Section 16 (Blower System (HEV))
- Section 17 (Cowl Top Cover (HEV))
- Section 18 (Front Seat Assembly (HEV))
- Section 19 (Interior Trim (HEV))
- Section 20 (Crash Pad (HEV))
- Section 21 (MULTIFUNCTION Switch (HEV))
- Section 22 (Motor Driven Power Steering System (HEV))
- Section 23 (Automatic Transaxle Control System (HEV))
- Section 24 (High Voltage Battery System (HEV))
- Section 25 (Hybrid Control System - General Information (HEV))
- Section 26 (High Voltage Battery Cooling System (HEV))
- Section 27 (High Voltage Battery Control System (HEV))
- Section 28 (Front Door Assembly (HEV))
- Section 29 (Rear Door Assembly (HEV))
- Section 30 (Trunk Lid Assembly (HEV))
- Section 31 (Lighting System (HEV))
- Section 32 (Hood Assembly (HEV))
- Section 33 (Roof Trim (HEV))
- Section 34 (Rear Seat Assembly (HEV))
- Section 35 (Electro Chromic Inside Rear View Mirror (HEV))
- Section 36 (Occupant Classification System Diagnosis (HEV))
- Section 37 (Automatic Transaxle System - General Information (HEV))
- Section 38 (Hybrid Control System (HEV))
- Section 39 (Hybrid Motor Cooling System (HEV))
- Section 40 (Brake System (HEV))
- Section 41 (Engine And Transaxle Assembly (R & I) (HEV))
- Section 42 (Windshield Wiper/Washer System (HEV))
- Section 43 (Airbag Modules And Clock Spring (HEV))
- Section 44 (Body Side Molding (HEV))
- Section 45 (Airbag System Diagnosis (HEV) (2 Of 4))
- Section 46 (Audio System (HEV))
- Section 47 (Power Windows (HEV))
- Section 48 (Front Suspension System (HEV))
- Section 49 (Tires/Wheels/Alignment (HEV))
- Section 50 (Smart Cruise Control Diagnosis (HEV))
- Section 51 (Surround View Monitor System Diagnosis (HEV))
- Section 52 (Heater And A/C Control Unit (HEV))
- Section 53 (Automatic Transaxle System (HEV))
- Section 54 (Driveshaft Assembly (HEV))
- Section 55 (Hydraulic System (HEV))
- Section 56 (Hybrid Motor Control System (HEV))
- Section 57 (Engine Mechanical System - General Information (HEV))
- Section 58 (Lubrication System (HEV))
- Section 59 (Ignition System (HEV))
- Section 60 (Exhaust Emission Control System (HEV))
- Section 61 (HEV Motor Control System Diagnosis (HEV) (2 Of 2))
- Section 62 (Drive Belt System (HEV))
- Section 63 (Rear Suspension System (HEV))
- Section 64 (Hybrid Motor Assembly (HEV))
- Section 65 (Hybrid Motor System - General Information (HEV))
- Section 66 (Rear View Monitor System Diagnosis (HEV))
- Section 67 (Active Hydraulic Boost (AHB) System (HEV))
- Section 68 (Wireless Power Charger System (HEV))
- Section 69 (Body Control Module (BCM) (HEV))
- Section 70 (Smart Key System (HEV))
- Section 71 (General Information (HEV))
- Section 72 (Automatic Transaxle System Diagnosis (HEV))
- Section 73 (Active Air Flap Diagnosis (HEV))
- Section 74 (Electric Parking Brake Diagnosis (HEV))
- Section 75 (Engine Control System Diagnosis (4 Of 6) (HEV))
- Section 76 (ESC/AHB Diagnosis (HEV) (2 Of 2))
- Section 77 (Parking Brake System (HEV))
- Section 78 (Fuses And Relays (HEV))
- Section 79 (Button Engine Start System (HEV))
- Section 80 (Motor Driven Power Steering System Diagnosis (HEV))
- Section 81 (Air Conditioning System Diagnosis (HEV))
- Section 82 (Autonomous Emergency Braking (AEB) System (HEV))
- Section 83 (Charging System (HEV))
- Section 84 (Body Electrical System - General Information (HEV))
- Section 85 (Seat Electrical (HEV))
- Section 86 (Indicators And Gauges (HEV))
- Section 87 (Multi Function Camera Diagnosis (HEV))
- Section 88 (Airbag System Diagnosis (HEV) (4 Of 4))
- Section 89 (Low Voltage Dc/Dc Converter (LDC) (HEV))
- Section 90 (Rear Axle Assembly (HEV))
- Section 91 (Low Dc/Dc Converter Diagnosis (HEV))
- Section 92 (Virtual Engine Sound System Diagnosis (HEV))
- Section 93 (Smart Key Unit Diagnosis (HEV))
- Section 94 (Assist Door Module Diagnosis (HEV))
- Section 95 (Supplemental Restraint System Control Module (SRSCM) And Sensors (HEV))
- Section 96 (Timing System (HEV))
- Section 97 (Cylinder Head Assembly (HEV))
- Section 98 (Lane Departure Warning System (LDWS) (HEV))
- Section 99 (Evaporative Emission Control System (HEV))
- Section 100 (Smart Junction Block Diagnosis (HEV))
- Section 101 (Engine Control System Diagnosis (6 Of 6) (HEV))
- Section 102 (Blind Spot Detection System (HEV))
- Section 103 (Body Control Module Diagnosis (HEV))
- Section 104 (Tire Pressure Monitoring System Diagnosis (HEV))
- Section 105 (HEV Battery System Diagnosis (HEV))
- Section 106 (Amplifier System Diagnosis (HEV))
- Section 107 (Power Seat Module Diagnosis (HEV))
- Section 108 (Back View Camera (HEV))
- Section 109 (Heater System (HEV))
- Section 110 (Cluster Module Diagnosis (HEV))
- Section 111 (Driver Door Module Diagnosis (HEV))
- Section 112 (Blind Spot Detection System - Left Diagnosis (HEV))
- Section 113 (Surround View Monitoring (SVM) System (HEV))
- Section 114 (Blind Spot Detection System - Right Diagnosis (HEV))
- Section 115 (Electronic Stability Control (ESC) System (HEV))
- Section 116 (Adaptive Front Lighting System Diagnosis (HEV))
- Section 117 (Wireless Power Charger Diagnosis (HEV))
- Section 118 (Engine Control System Diagnosis (2 Of 6) (HEV))
- Section 119 (Air Conditioning System (HEV))
- Section 120 (DTC Index (HEV))
- Section 121 (Airbag System Diagnosis (HEV) (1 Of 4))
- Section 122 (Airbag System Diagnosis (HEV) (3 Of 4))
- Section 123 (ESC/AHB Diagnosis (HEV) (1 Of 2))
- Section 124 (HEV Motor Control System Diagnosis (HEV) (1 Of 2))
- Section 125 (Engine Control System Diagnosis (1 Of 6) (HEV))
- Section 126 (Engine Control System Diagnosis (3 Of 6) (HEV))
- Section 127 (Engine Control System Diagnosis (5 Of 6) (HEV))
Factory Service Tools
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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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