The Kia Optima 5 th generation was produced in 2020, 2021, 2022, 2023, 2024, 2025. In some countries it is sold under the name Kia K5. In this material we will present a description of Kia Optima K5 fuses with fuse box diagram diagrams, their locations and photo examples of execution. Let’s show the cigarette lighter fuses.
The purpose of fuses and relays may differ from those presented and depend on the year of manufacture and the level of electrical equipment of your car.
Engine compartment
Under the hood in the engine compartment on the left side there is a block with fuses and relays, closed with a protective cover.
Diagram
Assignment
| ALT | 200A Main fuse (on battery) |
| IG2 | 30A Engine Compartment Junction Block (Start Relay), Circuit Board Assembly (Ignition Switch 2 Relay) |
| ABS1 | 40A ESC (Electronic Stability Control) Module |
| B+2 | 50A ICU Junction Block (Instrument Panel Module-!, Instrument Panel Module3, Instrument Panel Module4, Fuse – AMP (Amplifier), IBU (Integrated Body Control Unit)1) |
| BLOWER | 40A/50A Engine Compartment Junction Block (Blower Relay) |
| B+3 | 50A ICU Junction Block (Instrument Panel Module 5, Instrument Panel Module 6, Instrument Panel Module 7, Instrument Panel Module 8, Instrument Panel Module 9, Instrument Panel Module 10, Instrument Panel Module 11) |
| B+1 | 50A ICU Junction Block (Fuse – P/SEAT (Driver), P/SEAT (PASS), CHILD LOCK, MODULE 1, S/HEATER (RR), SAFETY P/WINDOW (Left Handle Side), SAFETY P/WINDOW ( right side of the handle) ) |
| COOLING FAN | 80A Cooling Fan Motor |
| MDPS / EPS | 80A MDPS/EPS (Electric Power Steering) Unit |
| CWD1 | 30/40A G1.6 T-GDi: CWD drive |
| E-CWT1 | 40A G2.5 T-GDi: Engine room distribution block (E-CWT relay) |
| IG1 | 40A PCB Assembly (Ignition Switch Relay, ACC Relay) |
| REAR HEATED | 50A Engine Compartment Junction Block (Rear Heater Relay) |
| EPB | 60A ESC (Electronic Stability Control) Module |
| B+5 | 60A PCB Assembly (Engine Control Relay, A/C Fuse!, WIP-ER1, TCU (Transmission Control Unit)1, Horn, ECU (Engine Control Unit)2) |
| OIL PUMP1 | 60A G1.6 T-GDi: Electronic oil pump |
| OIL PUMP | 60A [Smartstream G 25 T-GDi] Electronic Oil Pump |
| POWER OUTLET1 | 40A PCB Unit (Socket Relay) |
| W/S HEATED GLASS RH | 40A W/S Relay on right handle with heated glass |
| W/S HEATED GLASS LH | 40A W/S Relay on left handle with heated glass |
| TCU5 | 60A G2.5 T-GDi: TCM (Transmission Control Module) |
| B+4 | 60A ICU Junction Block (Latch-Latch Relay, Fuse -MODULE3, AIR BAG 2, SUNROOF 1, SUNROOF 2, S/HEATER (FRONT), TRUNK, BRAKE SWITCH, DOOR LOCK) |
| ECU5 | 10A G1.6 T-GDi: ECM (Engine Control Module) |
| AMS | 10A Battery Sensor |
| VACUUM PUMP1 | 20A G2.5 T-GDi: Vacuum relay |
| 4WD | 20A G1.6 T-GDi: 4WD audio/video ECU (engine control unit) |
| FUEL PUMP1 | 20A Engine Compartment Junction Block (Fuel Pump Relay) |
| VACUUM PUMP2 | 10A G2.5 T-GDi: ESC (Electronic Stability Control) module |
| E-CWT3 | 20A G2.5 T-GDi: ECM (Engine Control Module) |
| HEATED MIRROR | 10A Air conditioner switch |
| E-CWT4 | 20A G2.5 T-GDi: ECM (Engine Control Module) |
| WIPER1 | 30A Circuit Board Assembly (Wiper Relay) |
| WIPER2 | 10A IBU (Integrated Body Control Unit), ECM (Engine Control Module) |
| TCU1 | 20A TCM (Transmission Control Module) |
| ECU2 | 15A ECM (Engine Control Module) |
| ECU1 | 20A ECM (Engine Control Module) |
| ECU4 | 15A ECM (Engine Control Module) |
| TCU2 | 15A TCM (Transmission Control Module), Transmission Range Switch |
| A/C1 | 10A Engine Compartment Junction Block (A/C Relay) |
| INJECTOR | 15A G2.5 T-GDi: Injector #1 ~ #4 |
| SENSOR1 | 15A Oxygen sensor (up/down) |
| OIL PUMP2 | 10A G1.6 T-GDi: Electronic oil pump |
| CWD2 | 10A G1.6 T-GDi: CWD drive |
| POWER OUTLET2 | 10A Front socket, left handle side |
| POWER OUTLET3 | 20A Front USB Charger |
| HORN | 20A PCB Unit (Horn Relay) |
| SENSOR2 | 10A Oil Control Valve (Inlet/Outlet), Variable Oil Pump Solenoid Valve, Purge Control Solenoid Valve, RCV (Recirculation Valve Control) Control Solenoid Valve, Canister Close Valve, Engine Room Junction Block (A/C Relay) |
| FUEL PUMP2 | 10A Engine Compartment Junction Block (Fuel Pump Relay) |
| ECU3 | 10A ECM (Engine Control Module) |
| ABS3 | 10A ESC (Electronic Stability Control) Module |
| IGN COIL | 20A Ignition Coil #1 ~ #4 |
| CRUISE | 10A Forward radar |
The fuses designated as POWER OUTLET are responsible for the operation of the cigarette lighter. Another one will be located in the block in the cabin.
Passenger compartment
Inside the car, the fuse box is located in the lower left part of the instrument panel, behind the protective cover.
Diagram
Designation
| S/HEATER (FRT) | 25A Heated Front Seat Control Module, Front Ventilated Seat Control Module |
| TRUNK | 10A Trunk Lid Relay |
| DOOR LOCK | 20A Door Lock Relay, Door Unlock Relay |
| MODULE 1 | 7.5A Front Console Switch #1, Key Solenoid, Driver/Passenger Smart Key External Handle |
| CHILD LOCK | 15A Rear Child Lock Relay, Rear Child Lock Relay |
| MODULE3 | 10A Hazard Light Switch, Front Lamp, Right Side Handle, Front Lamp Assembly, Driver Door Module, Driver/Passenger Door Lamp |
| S/HEATER (RR) | 25A Rear seat heating control module |
| P/SEAT (PASS) | 30A Passenger Seat Manual Switch |
| MODULE6 | 10A Sport Mode Switch, Driver Door Module |
| SAFETY P/WINDOW (RH) | 30A Passenger Power Window Switch, Passenger Safety Power Window Module, Rear Power Window Switch, Handle Right Side, Rear Power Window Module, Handle Right Side |
| P/SEAT (DRV) | 30A Manual Driver Seat Switch, Driver IMS (Integrated Memory System) Module |
| IBU1 | 15A Ignition switch, IBU (Integrated Body Unit) |
| IAU | Not used |
| AMP | 25A DC/DC Converter (AMP (Amplifier)), AMP (Amplifier) |
| SAFETY P/WINDOW (LH) | 30A Driver Safety Power Window Module Rear Power Window Switch Left Handle Side Rear Safety Power Window Module Left Handle Side |
| SPARE1 | Not used |
| BRAKE SWITCH | 10A IBU (Integrated Body Control Unit), Brake Light Switch |
| SUNROOF2 | 20A Sunroof Controller (Louver Motor), Data Link Connector |
| AIR BAG2 | 10A SRS (Supplemental Restraint System) Control Module |
| AIR BAG1 | 15A SRS control module (supplemental restraint system) |
| MEMORY | 10A Head-up Display, Driver IMS (Integrated Memory System), Driver/Passenger Power Outside Mirror, Rain Sensor, Instrument Cluster, A/C Control Module, A/C Switch |
| MULTIMEDIA | 15A DC/DC Converter (Audio), Audio, Audio/Video and Navigation Head Unit |
| SUNROOF1 | 20A Sunroof Controller (Window Motor) |
| MODULE7 | 10A Audio/Video 4WD (All Wheel Drive), ECU (Engine Control Unit), Front Console No. 1/No. 2 Switch, Lane Keeping Assist Unit, IBU (Integrated Body Unit), Hazard Panel Switch, Prevent System Unit collisions when parking |
| MDOULE5 | 10A Brake light switch |
| M0DULE8 | 10A AMP (Amplifier), Driver IMS (Integrated Memory System) Module, Front Wireless Charger, Front Ventilated Seat Control Module, Heated Front/Rear Seat Control Module, ATM (Automatic Transmission) Shift Lever Indicator, Transmission Link Connector Data, Audio, Audio/ Video and Navigation Head Unit, Air Conditioning Switch, 360° CCTV Unit, Air Conditioning Control Module, DC/DC Converter (Audio/Amplifier (Amplifier)), Electrochromic Mirror |
| MODULE2 | 10A Cooling Fan Motor, Parking Anti-Collision System Module, Heated Front/Rear Seat Control Module, Heated Front Seat Control Module, Engine Compartment Junction Block (Left Handle Heated Glass/Right Handle Side Heater) |
| MDPS | 7.5A MDPS (Electric Power Steering) Unit (Column Type) |
| A/C1 | 7.5A A/C Control Module, A/C Switch, Engine Compartment Junction Block (Blower Relay) |
| MODULE4 | 10A Rear USB Charger, PCB Assembly (Socket Relay), Console USB Charger (Outside, Rear Left/Right Handlebar Side), Console USB Charger (Inside), AMP (Amplifier), IBU (Integrated Body Control Unit), DC-DC Converter (Audio/AMP (Amplifier)), Audio, Audio/Video and Navigation Head Unit, 360° Camera Surveillance System Unit, Parking Collision Avoidance System Unit |
| MODULE9 | 7.5A IBU (Integrated Body Control Unit) |
| CLUSTER | 10A Instrument cluster, head-up display |
| WASHER | 15A Multifunction switch |
| START | 7.5A B/Hazard Relay, IBU (Integrated Body Control Unit), ECM (Engine Control Module), Transmission Range Switch, Engine Compartment Junction Block (Start Relay) |
| POWER OUTLET | Not used |
| IBU2 | 7.5A IBU (Integrated Body Control Unit) |
| A/BAG IND | 7.5A Instrument cluster, overhead console lamp |
| SPARE2 | Not used |
| A/C2 | 10A Air Conditioning Control Module |
Check the purpose of the elements with your diagram located on the back of the block cover.
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