2016 to 2020 Kia Optima Fuses Location
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Look up fuse designation and location on Kia Optima. If your radio, windows, and cigarette outlet are not working, the problem can be a blown fuse. Kia Optima has fuses in several locations, including under the dashboard and engine bay.
At a Glance
- Two fuse locations: the interior panel at the driver’s side of the dashboard and the fuse box in the engine bay.
- Common blown fuse symptoms: a dead radio, power windows or power outlet.
- Kia changed fuse assignments between Optima generations and trims, so check the diagram on your fuse cover against the charts below.
- Replace with the same amperage only.
- If the new fuse blows too, there is a short or an overloaded circuit further down the wire.
Dashboard / Interior Fuses
Driver’s Side of Dashboard
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| Fuse name | Fuse Rating [A] | Circuit protected |
| MODULE 7 | 10 | Around View Unit, Front Air Ventilation Seat Control Module, Front Seat Warmer Control Module, Rear Seat Warmer Control Module |
| MODULE 5 | 10 | A/C Control Module, Electro Chromic Mirror, Crash Pad Switch, Head Lamp LH/RH, Auto Head Lamp Leveling Device Module, A/V and navigation Head Unit, Fuel Lid and trunk Open Switch, Shift Lever Indicator, Driver IMS Module, Driver IMS Module, Front Air Ventilation Seat Control Module, Front Seat Warmer Control Module, Rear Seat Warmer Control Module |
| MODULE 6 | 10 | BCM, Smart Key Control Module |
| A/CON | 10 | A/C Control Module, E/R Junction Block (Blower Relay) |
| START | 10 | [W/O Smart Key & IMMO.] ICM Relay Box (Burglar Alarm Relay) [With Smart Key / IMMO.] Transaxle Range Switch, PCM (G4KH/G4KJ) |
| A/BAG | 15 | SRS Control Module, Passenger Occupant Detection |
| MODULE 3 | 10 | BCM, ATM Shift Lever, Stop Lamp Switch, DBL Unit, Keyboard, A/C Control Module |
| MODULE 4 | 10 | Console Switch, Blind Spot Detection Radar LH/RH, Smart Cruise Control Unit, AEB Module, Lane Keeping Assist Module |
| INTERIOR LAMP | 10 | Trunk Room Lamp, Ignition Key Ill. & Door Warning Switch, Glove Box Lamp, Driver/Passenger Smart Key Outside Handle, Front Vanity Lamp Switch LH/RH, Overhead Console Lamp, Center Room Lamp, Center Personal Lamp, Rear Personal Lamp LH/RH, Driver/Passenger Scuff Lamp |
| MDPS | 10 | MDPS Unit (Column/Rack), Steering Angle Sensor |
| IG1 | 25 | PCB Block (Fuse ? TCU 2, ABS 3, ECU 3, VACUUM PUMP 2) |
| MODULE 9 | 10 | Immobilizer Module, Smart Key Control Module |
| WASHER | 15 | Multifunction Switch (Wiper Low & Washer Switch) |
| MODULE 8 | 10 | A/C Control Module, Driver/Passenger Door Module |
| CLUSTER | 10 | Instrument Cluster (IG1) |
| MULTIMEDIA | 15 | Audio, A/V & Navigation Head Unit, Keyboard |
| HEATED STEERING | 15 | BCM (Steering Wheel Heated) |
| MODULE 1 | 10 | Console Switch, Key Solenoid, Driver/Passenger Door Module |
| DR LOCK | 20 | Door Lock Relay, Door Unlock Relay |
| SMART KEY | 15 | Smart Key Control Module |
| A/BAG IND | 10 | Instrument Cluster (Air Bag IND. Power) |
| TRUNK | 10 | Trunk Lid Relay, Fuel Filler and trunk Open Switch, Trunk Lid Motor, ICM Relay Box (Fuel Filler Open Relay) |
| SUNROOF 2 | 20 | Sunroof Control Unit (Roller) |
| MEMORY 1 | 10 | Instrument Cluster, A/C Control Module, Data Link Connector, BCM, Wireless Charger, Driver IMS Module, Rain Sensor, ICM Relay Box (Outside Mirror Folding/Unfolding Mirror Relay), Security Indicator, Auto Light & Photo Sensor, Driver/Passenger Door Module, Electro Chromic Mirror |
| S/HEATER RR | 25 | Rear Seat Warmer Control Module |
| SUNROOF 1 | 20 | Sunroof Control Unit (Glass) |
| S/HEATER FRT | 25 | Front Air Ventilation Seat Control Module, Front Seat Warmer Control Module |
| MODULE 2 | 10 | Audio, A/V & Navigation Head Unit, Keyboard, Around View Unit, AMP, Power Outside Mirror Switch, Smart Key Control Module, BCM, Wireless Charger, Rear USB Charger #1/#2, E/R Junction Block (Power Outlet Relay) |
| P/WINDOW RH | 25 | Power Window RH Relay, Rear Power Window Switch RH, Power Window Main Switch, Passenger Safety Power Window Module |
| P/SEAT PASS | 25 | Passenger Seat Manual Switch, Walk-In Relay Module, Passenger Reclining Limit Switch |
| AMP | 25 | AMP (JBL) |
| BRAKE SWITCH | 10 | Stop Lamp Switch, Immobilizer Module, Smart Key Control Module, Start/Stop Button Switch |
| P/WINDOW LH | 25 | Power Window LH Relay, Rear Power Window Switch LH, Power Window Main Switch, Driver Safety Power Window Module |
| P/SEAT DRV | 30 | Driver Seat Manual Switch, Driver IMS Module |
| POWER OUTLET | 20 | Front Power Outlet #1, Front Cigarette Lighter & Power Outlet #2 |
Engine Bay
| Fuse name | Fuse rating | Circuit protected | |
| MULTI FUSE | MDPS1 | 80 | MDPS Unit (Column) |
| COOLING FAN 2 | 60 | [G4KH/G4FJ] Cooling Fan1 Relay, Cooling Fan2 Relay | |
| COOLING FAN 1 | 50 | [G4KJ] Cooling Fan1 Relay | |
| B+ 3 | 50 | Smart Junction Block (IPS 2 (IPS 5), IPS 3 (IPS 6), IPS 7, IPS 8) | |
| REAR HEATED | 50 | Rear Heated Relay | |
| DCT1 | 40 | [G4FJ-DCT] TCM | |
| BLOWER | 40 | Blower Relay | |
| POWER OUTLET 1 | 40 | Power Outlet Relay | |
| IG2 | 30 | [W/O Smart Key] Start Relay, Ignition Switch,
[With Smart Key] Start Relay, PCB Block (IG2 Relay) | |
| MDPS 2 | 100 | MDPS Unit (Rack) | |
| B+1 | 60 | Smart Junction Block (Fuse ? SUNROOF1, SUNROOF2, S/HEATER RR, P/SEAT DRV, P/SEAT PASS, P/WINDOW LH, P/WINDOW RH, TRUNK) | |
| B+5 | 60 | PCB Block (Engine Control Relay, Fuse ? TCU1, ECU2, FUEL PUMP, HORN, WIPER1) | |
| B+2 | 60 | Smart Junction Block (IPS 1, IPS 4, Fuse ? AMP, S/HEATER FRT) | |
| ABS1 | 40 | ESC Module | |
| IG1 | 40 | [W/O Smart Key] Ignition Switch,
[With Smart Key] PCB Block (IG1/ACC Relay) | |
| DCT 2 | 40 | [G4FJ-DCT] TCM | |
| ABS 2 | 30 | ESC Module, Multipurpose Check Connector | |
| FUSE | B+4 | 40 | Smart Junction Block (Leak Current Autocut Device Fuse ? INTERIOR LAMP, MEMORY1, MULTIMEDIA, Fuse ? DOOR LOCK, MODULE1, SMART KEY, BRAKE SWITCH) |
| E-CVVT 1 | 40 | E-CVVT Relay | |
| VACUUM PUMP 1 | 20 | Vacuum Pump | |
| DEICER | 20 | Deicer Relay | |
| AMS | 10 | Battery Sensor | |
| E-CVVT 2 | 20 | PCM | |
| A/CON | 10 | A/C Control Module | |
| E-CVVT 3 | 20 | PCM | |
| HEATED MIRROR | 10 | A/C Control Module, Driver/Passenger Power Outside Mirror, ECM | |
| WIPER 2 | 10 | BCM, PCM/ECM | |
| H/LAMP HI | 20 | Head Lamp HI Relay | |
| FUEL PUMP | 20 | Fuel Pump Relay | |
| ECU 1 | 20 | PCM/ECM | |
| SENSORS 2 | 10 | E/R Junction Block (Fuel Pump Relay, Cooling Fan 1/2 Relay) [G4KJ] Oil Control Valve (Exhaust), Purge Control Solenoid Valve, Variable Intake Solenoid Valve, CanisterClose Valve [G4KH] Oil Control Valve (Exhaust), Purge Control Solenoid Valve, RCV Control Solenoid Valve, Canister Close Valve [G4FJ] Oil Control Valve #1/#2, Purge Control Solenoid Valve, RCV Control Solenoid Valve, Canister Close Valve | |
| TCU 2 | 15 | Transaxle Range Switch, TCM | |
| ABS 3 | 10 | ESC Module, Multipurpose Check Connector | |
| POWER OUTLET 3 | 20 | Rear Power Outlet | |
| B/UP LAMP | 10 | PCM/TCM, Transaxle Range Switch, Audio, Electro Chromic Mirror, Rear Combination Lamp (IN) LH/RH | |
| SENSOR 1 | 15 | Oxygen Sensor (Up/Down) | |
| IGN COIL | 20 | Ignition Coil #1/#2/#3/#4 | |
| ECU 2 | 10 | PCM/ECM | |
| TCU 1 | 10 | PCM/TCM | |
| VACUUM PUMP 2 | 10 | Vacuum Pump, Vacuum Switch | |
| ECU 2 | 10 | PCM/ECM | |
| POWER OUTLET 2 | 20 | Front Power Outlet #1 | |
| HORN | 20 | Horn Relay, ICM Relay Box (Burglar Alarm Horn Relay) | |
| WIPER 1 | 30 | Wiper Power Relay |
Notes:
- Check the appropriate fuse if your vehicle’s lights, accessories, controls, radio, or cigarette outlets have stopped working. A blown fuse will have the element inside melt.
- Always replace a blown fuse with the same rating fuse. If the new fuse blows again, there is an electrical problem. Do not install a higher-rated fuse. Installing a higher-rated fuse could cause damage and possibly even fire.
- Always turn the ignition OFF when you are replacing fuses.
Fuses blow for a reason, which is usually due to circuit overload. You will need to troubleshoot the issue if the replaced fuse blows again. For more help, see our guide on reading and diagnosing vehicle problems.
We have published many more repair guides for your vehicle. Make sure to check out the Vehicle Repair Guides section.
Confirm the layout against your own fuse cover
Kia changed fuse assignments between Optima generations and between trim levels, so treat the charts above as a guide to the right area rather than a guarantee. The authoritative diagram for your exact car is printed on the inside of the fuse box cover and repeated in the owner’s manual.
If the new fuse blows too
A fuse that blows again straight away is pointing to a short or an overloaded circuit further down the wire. Fitting a higher amperage fuse stops the symptom and moves the risk to the wiring harness, which is a far more expensive repair. Always match the rating printed on the old fuse.
On cars of this age the common causes are an aftermarket stereo or dash camera spliced into an existing circuit, a chafed wire in a door or tailgate harness, and moisture in a connector. Check those before looking for anything complicated.
If the fuse is good and the component still will not work, the problem is a relay, a ground, a switch or a module. A full system scan reads the stored fault codes and shows which circuit to follow.
Where the Fuse Boxes Are, Step by Step
Open the hood, pull the hood release under the dashboard, and go in front of the vehicle. Then unlock the hood latch and pull the hood up until the hydraulic hood strut locks in.
Locate the fuse box between the battery and the driver’s side hood strut.
Remove the fuse box cover by pushing the tabs in and pulling it out.
Once the fuse box is opened, you will see the fuse and relays of the vehicle. Also, the labels can be seen on the backside of the cover.
The other fuse box location can be seen in the driver’s seat, on the left side of the steering wheel.
Pull the cover out, and the same with the cover will show the labels of the fuses on the vehicle. It is also the same place where the OBD II port is located.
How to tell which fuse has blown
A blown fuse is visible if you pull it and hold it up to the light, because the metal strip across the middle will be broken or the plastic will be scorched. If you are not sure, the quicker method is to leave the fuse in place and touch a test light or a multimeter probe to each of the two small metal test points on top of the fuse with the ignition on. A good fuse shows power on both points, a blown one shows power on one side only.
When the fuse is fine and the component still does not work
Plenty of faults on these cars look electrical but are stored in a module rather than caused by a fuse. If every fuse checks out and something still refuses to operate, reading the fault codes from all modules rather than the engine alone will usually point straight at the circuit or the module responsible instead of leaving you pulling fuses one at a time.
Frequently Asked Questions
Which fuse is the cigarette lighter on a 2016 to 2020 Kia Optima?
The 20A POWER OUTLET fuse feeds the front power outlet and the front cigarette lighter.
Which fuse controls the fuel pump on the Optima?
The 20A FUEL PUMP fuse in the engine bay feeds the fuel pump relay. Check it if the engine cranks but will not start.
Why does my Optima radio not turn on?
Check the 15A MULTIMEDIA fuse and the 10A MODULE 2 fuse, which both feed the head unit. If they are good, the head unit or its wiring is the next suspect.
How do I remove the interior fuse box cover?
Pull the cover on the left side of the steering wheel out. The fuse labels are on the back of the cover, and the OBD II port is in the same area.
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