KIA Optima (2005 – 2010) – fuse box diagram
Year of production: 2005, 2006, 2007, 2008, 2009, 2010
Engine compartment
| Description | Fuse rating | Protected component |
| I/P B+ 2 | 50 | In panel B+ |
| ABS 2 | 40 | ABS |
| DRL | 15 | Daytime running light |
| HORN | 15 | Horn |
| H/LP LOW | 15 | Headlight (low) |
| F/PUMP | 20 | Fuel pump |
| H/LP HI | 15 | Headlight (high) |
| ECU | 10 | Engine control unit |
| ABS 1 | 40 | ABS |
| ALT | 125 (150)* | Alternator |
| SPARE | 10 | Spare fuse |
| SPARE | 15 | Spare fuse |
| SPARE | 20 | Spare fuse |
| FRT FOG | 15 | Front fog light |
| ECU RELAY | 30 | Engine control unit |
| POWER AMP | 20 | Amplifier |
| SPARE | 15 | Spare fuse |
| SPARE | 20 | Spare fuse |
| P/OUTLET | 25 | Power outlet |
| RAD FAN | 30 (40)* | Radiator fan |
| PCU | 10 | Power train control system sensors, TCU |
| ABS | 10 | ABS |
| S/WARMER | 25 | Seat warmer |
| ATM | 20 | Automatic transaxle control |
| S/ROOF | 20 | Sunroof |
| SPARE | 20 | Spare fuse |
| BACK UP | 10 | Back-up light |
| RR HTD | 40 | Rear window defroster |
| IGN 1 | 30 | Ignition |
| B+ | 30 | In pannel B+ |
| TAIL | 20 | Taillight |
| A/CON | 10 | Air conditioner |
| ECU-1 | 20 | Engine control unit |
| IGN COIL | 20 | Ignition coil |
| SNSR 3 | 10 | Sensor |
| BLOWER | 40 | Blower |
| IGN 2 | 30 | Ignition |
| SNSR 2 | 15 | Sensors |
| SNSR 1 | 15 | Sensors |
| HORN RELAY | — | Horn relay |
| HDLP_LOW RELAY | — | Headlight (low) relay |
| RAD FAN_HI RELAY | — | Radiator fan relay |
| RAD FAN_LOW RELAY | — | Radiator fan relay |
| F/PUMP RELAY | — | Fuel pump relay |
| WIPER RELAY | — | Wiper relay |
| MAIN RELAY | — | Main relay |
| START RELAY | — | Start motor relay |
| ATM CONT RELAY | — | Automatic transaxle control relay |
| A/CON RELAY | — | Air conditioner relay |
* : if equipped
Driver-side knee bolster
| Description | Fuse rating | Protected component |
| H/LP | 10 | Headlight |
| A/CON SW | 10 | Air conditioner |
| START | 10 | Start motor |
| P/SEAT RH | 30 | Power seat (right) |
| P/WDW RH | 25 | Power window (right) |
| WIPER | 25 | Front wiper |
| MIRR HTD | 10 | Outside rearview mirror defroster |
| RR FOG | 15 | Rear fog light |
| P/SEAT LH | 30 | Power seat (left) |
| P/WDW LH | 25 | Power window (left) |
| SPARE | 10 | Spare fuse |
| MODULE-2 | 10 | Cluster |
| W/DEICER | 15 | Deicer |
| TAIL RH | 10 | Taillight (right) |
| TAIL LH | 10 | Taillight (left) |
| EPS | 10 | Power steering wheel |
| A/CON | 10 | Air conditioner |
| SAFETY PWR | 20 | Safety power window |
| A/BAG IND | 10 | Airbag warning |
| A/BAG | 15 | Airbag |
| DR LOCK | 25 | Central door lock |
| SPARE | 10 | Spare fuse |
| CLUSTER | 10 | Cluster |
| MODULE-1 | 10 | BWS buzzer, ESP switch |
| HAZARD | 15 | Hazard warning light |
| STOP LP | 15 | Stop light |
| SPARE | 15 | Spare fuse |
| TELL TALE | 10 | Clock |
| T/LID OPEN | 15 | Trunk lid opener |
| ADJ PEDAL | 10 | Adjust pedal relay |
| SPARE | 15 | Spare fuse |
| T/SIG | 10 | Turn signal light |
| TPMS | 10 | TPMS |
| BLOWER MTR | 10 | Blower, Air conditioner |
| MEMORY | 15 | Cluster, ETACS, A/C, Clock, Room lamp |
| AUDIO | 15 | Audio |
| C/LIGHTER | 25 | Cigar lighter |
| D/CLOCK | 10 | Clock |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market
