2019 Kia Optima Phev Fuses and Fuse Box | How To Check and Fix
A popular hybrid car noted for its economical performance and environmentally friendly features is the 2019 Kia Optima PHEV. It features a fuse box and a system of fuses, much like any other car, which is essential to the seamless functioning of several electrical parts. Fuses are made to guard against potential harm and shield these parts from electrical overloads. This article will walk you through the necessary procedures for inspecting and replacing the fuses in your 2019 Kia Optima PHEV, giving you the know-how to diagnose electrical problems and maintain the smooth operation of your car. Any auto owner should know how to read your fuse box and handle possible issues; we can assist you in getting started.
FUSES![Kia-Optima-Phev-2019-Fuses-and-Fuse-Box-How-To-Check-and-Fix-fig-1](https://www.autouserguide.com/wp-content/uploads/2023/12/Kia-Optima-Phev-2019-Fuses-and-Fuse-Box-How-To-Check-and-Fix-fig-1.jpg)
A vehicle’s electrical system is protected from electrical overload dam-age by fuses. This vehicle has 2 (or 3) fuse panels, one located in the driver’s side panel bolster, the other in the engine compartment near the battery. If any of your vehicle’s lights, accessories, or controls do not work, check the appropriate circuit fuse. If a fuse has blown, the element inside the fuse will melt. If the electrical system does not work, first check the driver’s side fuse panel. Always replace a blown fuse with one of the same rating. If the replacement fuse blows, this indicates an electrical problem. Avoid using the system involved and immediately consult an authorized Kia dealer. Three kinds of fuses are used: blade type for lower amperage rating, cartridge type, and multi fuse for higher amperage ratings.
WARNING – Fuse replacement
- Never replace a fuse with anything but another fuse of the same rating.
- A higher capacity fuse could cause damage and possibly a fire.
- Never install a wire or aluminium foil instead of the proper fuse – even as a temporary repair. It may cause extensive wiring damage and a possible fire.
- Do not arbitrarily modify or add electric wiring to the vehicle.
CAUTION
Do not use a screwdriver or any other metal object to remove fuses because it may cause a short circuit and damage the system.
NOTICE
- When replacing a fuse, turn the ignition “OFF” and turn off switches of all electrical devices then remove the battery (-) terminal.
- The actual fuse/relay panel label may differ from the equipped items.
WARNING – Electrical Fire
Always ensure replacement fuses and relays are securely fastened when installed. Failure to do so can result in a vehicle fire.
CAUTION
- When replacing a blown fuse or relay, make sure the new fuse or relay fits tightly into the clips. Failure to tightly install the fuse or relay may cause damage to the wiring and electric systems.
- Do not remove fuses, relays and terminals fastened with bolts or nuts.The fuses, relays and terminals may not be fastened correctly which may cause vehicle damage.
- Do not input any other objects except fuses or relays into fuse/relay terminals, such as a driver or wiring. It may cause contact failure and system malfunction.
- Do not plug in screwdrivers or aftermarket wiring into the ter-minal originally designed for fuse and relays only. The elec-trical system and wiring of the vehicle interior may be dam-aged or burned due to contact failure.
- If you directly connect the wire on the taillight or replace the bulb which is over the reg-ulated capacity to install trail-ers, etc., the inner junction block can get burned.
Inner panel fuse replacement![Kia-Optima-Phev-2019-Fuses-and-Fuse-Box-How-To-Check-and-Fix-fig-2](https://www.autouserguide.com/wp-content/uploads/2023/12/Kia-Optima-Phev-2019-Fuses-and-Fuse-Box-How-To-Check-and-Fix-fig-2.jpg)
- Turn the engine start/stop button to the OFF position and all other switches off.
- Open the fuse panel cover.
If the switch is located in the “OFF” position, a caution indicator will be displayed in the cluster. - Pull the suspected fuse straight out. Use the removal tool provided on the engine compartment fuse panel cover.
- Check the removed fuse; replace it if it is blown.
Spare fuses are provided in the engine compartment fuse panel. - Push in a new fuse of the same rating, and make sure it fits tightly in the clips.
If it fits loosely, consult an authorized Kia dealer. If you do not have a spare, use a fuse of the same rating from a circuit you may not need for operating the vehicle, such as the power outlet fuse. If the headlamp, turn signal lamp, stop signal lamp, fog lamp, DRL, tail lamp, High Mounted Stop Lamp do not work and the fuses are OK, check the fuse panel in the engine compartment. If a fuse is blown, it must be replaced.
NOTICE
If the headlamp, fog lamp, turn sig-nal lamp, or tail lamp malfunctions even without any problem to the lamps, have the vehicle checked by an authorized Kia dealer.
CAUTION – Fuse Panel Covers
- Set all switches to ON before driving.
- If the vehicle is going to be unused for over 1 month, set all switches to OFF to prevent the batteries from draining.
- The contact points of the switches may wear out with excessive use. Please refrain from excessive use of the switches (except for long-term parking for over 1 month).
Fuse switch
Always set the fuse switch to the ON position before using the vehicle.
If you move the switch to the OFF position, some items such as audio and the digital clock must be reset and transmitter (or smart key) may not work properly. When the switch is Off, the caution indicator will be dis-played on the instrument cluster. Always place the fuse switch in the ON position while driving the vehicle. If the switch is located in the “OFF” position, a caution indicator will be displayed in the cluster.
Engine compartment fuse replacement
- Turn the engine start/stop button to the OFF position and all other switches off.
- Remove the fuse panel cover by pressing the tab and pulling the cover up. When the blade type fuse is disconnected, remove it by using the clip designed for chang-ing fuses located in the engine compartment fuse box. Upon removal, securely insert a reserve fuse of the same rating.
- Check the removed fuse; replace it if it is blown. To remove or insert the fuse, use the fuse puller in the engine compartment fuse panel.
- Push in a new fuse of the same rating, and make sure it fits tightly in the clips. If it fits loosely, consult an authorized Kia dealer.
CAUTION
After checking the fuse panel in the engine compartment, securely install the fuse panel cover to protect against any electrical failure which may occur from water contact. Listen for the audible clicking sound to ensure the fuse panel cover is securely fastened.
Multi fuse
If the multi fuse is blown, it must be removed as follows:
- Turn off the engine.
- Disconnect the negative battery cable.
- Remove the nuts shown in the pic-ture above.
- Replace the fuse with a new one of the same rating.
- Reverse these steps to reinstall the multi fuse.
NOTICE
Do not disassemble nor assemble the multi fuse when it is secured with nuts and bolts. Incorrect or partial assembly torque may cause a fire. Have the vehicle checked by an authorized Kia dealer.
Main fuse
If the main fuse is blown, it must be removed as follows:
- Turn off the engine.
- Disconnect the negative battery cable.
- Remove the nuts shown in the pic-ture above.
- Replace the fuse with a new one of the same rating.
- Reverse these steps to reinstall the main fuse.
NOTICE
The electronic system may not func-tion correctly even when the engine compartment and internal fuse box’s individual fuses are not disconnected. In such case the cause of the problem may be the disconnection of the main fuse (BFT type), which is located inside the positive battery terminal (+) cap. Since the main fuse is designed more intricately than other parts, have the vehicle checked by an authorized Kia dealer.
CAUTION
Visually inspect the battery cap to ensure it is securely closed. If the battery cap is not securely closed, moisture may enter the system and damage the electrical components.
NOTICE – Random wiring prohibited when retrofitting equipment
Use of random wiring in the vehicle might cause danger due to failure and damage of the vehicle’s performance.
Using random wires, especially when retrofitting AVN or theft alarm systems, remote engine control, car phone or radio, might damage the vehicle or cause fire.
NOTICE – Remodeling Prohibited
Do not rewire your vehicle in any way as doing so may affect the performance of several safety features in your vehicle. Rewiring your vehi-cle may also void your warranty and cause you to be responsible for any subsequent vehicle damage which may result.
Fuse/relay panel description
Driver’s side fuse panel
Inside the fuse/relay panel covers, you can find the fuse/relay label describing fuse/relay name and capacity.
NOTICE
Not all fuse panel descriptions in this manual may be applicable to your vehicle. It is accurate at the time of printing. When you inspect the fuse panel in your vehicle, refer to the fuse panel label on the inside of the fuse cover. This diagram will provide you with the specific infor-mation for your vehicles.
Instrument panel (Driver’s side fuse panel)
Fuse Name | Fuse rating | Circuit Protected |
MODULE 7 | 10A | Surround View Monitor Unit, Front Air Ventilation Seat Control Module, Front Seat Warmer Control Module, Rear Seat Warmer Control Module |
MODULE 5 |
10A |
A/C Control Module, Electro Chromic Mirror, Driver IMS Module, Head Lamp LH/RH, Auto Head Lamp Leveling Device Module, Fuel Lid & Trunk Open Switch, Shift Lever Indicator, Front Air Ventilation Seat Control Module, Front Seat Warmer Control Module, Rear Seat Warmer Control Module |
MODULE 6 | 10A | BCM, Smart Key Control Module |
A/CON | 10A | A/C Control Module, E/R Junction Block (RLY. 4 – Blower Relay), Ionizer, Active Incar Sensor, Electronic A/C Compressor |
START | 10A | Transaxle Range Switch, Smart Key Control Module |
A/BAG | 15A | SRS Control Module, Passenger Occupant Detection Sensor |
MODULE 3 | 10A | BCM, Stop Lamp Switch, AFLS Unit, Keyboard, VESS Unit, A/V & Navigation Head Unit, Sport Mode Switch |
MODULE 4 |
10A |
Console Switch, Blind-spot Collision Warning Radar LH/RH, Parking Assist Control Module, Smart Cruise Control Unit, Lane Keeping Assist Module, Active Air Flap Unit, Electric Parking Brake Module, BMS Control Module |
INTERIOR LAMP |
10A |
Trunk Room Lamp, Driver/Passenger Door Lamp, Glove Box Lamp, Driver/Passenger Smart Key Outside Handle, Front Vanity Lamp Switch LH/RH, Overhead Console Lamp, Rear Personal Lamp LH/RH, Driver/Passenger Foot Lamp, Room Lamp, Center Personal Lamp |
Fuse Name | Fuse rating | Circuit Protected |
MDPS | 10A | MDPS Unit (Column/Rack) |
IG1 | 25A | PCB Block (Fuse – OPCU2/ELECTRICAL WATER PUMP/TCU2/ACTIVE HYDRAULIC BOOTER 3/HEV ECU2/ECU3) |
MODULE 9 | 10A | Smart Key Control Module |
WASHER | 15A | Multifunction Switch (Wiper Low & Washer Switch) |
MODULE 8 | 10A | Driver/Passenger Door Module |
CLUSTER | 10A | Instrument Cluster |
MULTI MEDIA | 15A | Audio, A/V & Navigation Head Unit, Keyboard |
HTD STRG | 15A | BCM (Steering Wheel Heated) |
MODULE 1 | 10A | Console Switch, Active Air Flap Unit, Gateway, Driver/Passenger Door Module |
DR LOCK | 20A | Door Lock Relay, Door Unlock Relay, ICM Relay Box (Dead Lock Relay) |
MEMORY 2 | 10A | Siren Control Module, Ultrasonic Instrusion Protection Sensor |
SMART KEY | 15A | Smart Key Control Module |
Fuse Name | Fuse rating | Circuit Protected |
A/BAG IND | 10A | Instrument Cluster (Air Bag IND. Power) |
TRUNK | 10A | Trunk Lid Relay, Fuel Filler & Trunk Open Switch, ICM Relay Box (Fuel Filler Open Relay) |
SUNROOF 2 | 20A | Sunroof Control Unit (Roller) |
BATTERY MANAGEMENT | 10A | BMS Control Module |
MEMORY 1 |
10A |
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 |
FOG LAMP REAR | 10A | ICM Relay Box (Rear Fog Lamp Relay) |
GATEWAY | 10A | Gateway |
S/HEATER REAR | 25A | Rear Seat Warmer Control Module |
SUNROOF 1 | 20A | Sunroof Control Unit (Glass) |
S/HEATER FRONT | 25A | Front Air Ventilation Seat Control Module, Front Seat Warmer Control Module |
ECS | 15A | Not Used |
MODULE 2 |
10A |
Audio, A/V & Navigation Head Unit, Keyboard, Wireless Charger, Surround View Monitor Unit, AMP, Power Outside Mirror Switch, Smart Key Control Module, BCM, Rear USB Charger, VESS Unit, E/R Junction Block (RLY. 7 – Power Outlet Relay) |
Fuse Name | Fuse rating | Circuit Protected |
P/WDW RH |
25A |
Power Window RH Relay, Rear Safety Power Window Module LH, Rear Power Window Switch LH, Power Window Main Switch,
[LHD] Passenger Safety Power Window Module [RHD] Driver Safety Power Window Module |
P/SEAT PASS | 30A | Passenger Seat Manual Switch, Walk In Relay Module, Passenger Reclining Limit Switch |
AMP | 25A | AMP |
BRAKE SWITCH | 10A | Stop Lamp Switch, Smart Key Control Module, Start/Stop Button Switch |
P/WDW LH |
25A |
Power Window LH Relay, Rear Safety Power Window Module RH, Rear Power Window Switch RH, Power Window Main Switch,
[LHD] Driver Safety Power Window Module [RHD] Passenger Safety Power Window Module |
P/SEAT DRV | 30A | Driver Seat Manual Switch, Driver IMS Module |
POWER OUTLET | 20A | Front Power Outlet #1, Front Cigarette Lighter & Power Outlet #2 |
RR WIPER | 15A | – |
SPARE 1 | 10A | – |
SPARE 2 | 10A | – |
Engine compartment fuse panel (For Hybrid)
Engine compartment fuse panel (For Plug-in Hybrid)
Engine room compartment fuse panel
Fuse Name | Fuse rating | Circuit Protected | |
MULTI FUSE |
MDPS 1 | 80A | MDPS Unit (Column) |
COOLING FAN | 60A | RLY. 2 (Cooling Fan Relay) | |
B+5 | 50A | PCB Block (Engine Control Relay, Fuse -FUEL PUMP/ECU2/TCU1/HORN/WIPER1/BATTERY C/FAN) | |
B+3 | 50A | Smart Junction Block (IPS 2 (IPS 5), IPS 3 (IPS 6), IPS 7, IPS 8) | |
REAR HEATED | 50A | RLY. 11 (Rear Heated Relay) | |
ACTIVE HYDRAULIC BOOSTER 2 |
40A |
Integrated Brake Actuation Unit |
|
BLOWER | 40A | RLY. 4 (Blower Relay) | |
POWER OUTLET1 | 40A | RLY. 7 (Power Outlet Relay) | |
IG2 | 30A | PCB Block (IG2 Relay) |
Fuse Name | Fuse rating | Circuit Protected | |
MULTI FUSE |
B+1 | 60A | Smart Junction Block (Fuse – TRUNK, SUNROOF2, S/HEATER REAR, SUNROOF1, P/WDW RH, P/SEAT PASS, P/WDW LH, P/SEAT DRV) |
EEWP | 60A | Engine Electric Water Pump | |
B+2 | 60A | Smart Junction Block (IPS 1, IPS 4, Fuse – FOG LAMP REAR, S/HEATER FRONT, AMP) | |
ACTIVE HYDRAULIC BOOSTER 1 |
40A |
Integrated Brake Actuation Unit |
|
IG1 | 40A | PCB Block (IG1/ACC Relay) | |
PTC HEATER 1 | 50A | PTC HEATER |
Fuse Name | Fuse rating | Circuit Protected | |
FUSE |
EPB1 | 30A | Electric Parking Brake Module |
H/Lamp Washer | 30A | RLY. 9 (H/Lamp Washer Relay) | |
B+4 | 40A | Smart Junction Block (Leak Current Autocut Device Fuse – INTERIOR LAMP, MULTI MEDIA, MEM- ORY2, MEMORY1, Fuse – MODULE1, DR LOCK, SMART KEY, BRAKE SWITCH) | |
EPB 2 | 30A | Electric Parking Brake Module | |
OPCU 1 | 20A | Electric Oil Pump Unit | |
DEICER | 20A | RLY. 10 (Deicer Relay) | |
AMS | 10A | Battery Sensor | |
HEATED MIRROR | 10A | A/C Control Module, Driver/Passenger Power Outside Mirror | |
WIPER 2 | 10A | BCM, PCM | |
H/LAMP HI | 20A | RLY. 6 (Head Lamp High Relay) | |
HEV ECU 1 | 10A | HPCU | |
OPCU2 | 10A | Electric Oil Pump Unit | |
ELECTRICAL WATER PUMP | 10A | Electric Water Pump (HEV) |
Fuse Name | Fuse rating | Circuit Protected | |
FUSE |
FUEL PUMP | 20A | Fuel Pump Relay |
ECU 1 | 20A | PCM | |
SENSORS 2 | 10A | Mass Air Flow Sensor, Fuel Pump Relay, Oil Control Valve #1/#2, Canister Close Valve, Camshaft Position Sensor #1/#2, Purge Control Solenoid Valve | |
TCU 2 | 15A | Transaxle Range Switch | |
ACTIVE HYDRAULIC BOOTER 3 |
10A |
Multipurpose Check Connector, Integrated Brake Actuation Unit |
|
POWER OUTLET 3 | 20A | Rear Power Outlet | |
B/UP LAMP | 10A | PCM, Transaxle Range Switch, Electro Chromic Mirror, Rear Combination Lamp (IN) LH/RH | |
OBC | 10A | HEV OBC SIG, INLET | |
IG3 4 | 20A | IG3 1 RLY | |
IG3 1 | 10A | HEV WATER PUMP | |
IG3 2 | 15A | HEV OBC SIG | |
IG3 3 | 10A | PCU, HPCU, POSITION SW, CLUSTER, BMS EXTN, AVN, IGPM, CHARGER IND |
Fuse Name | Fuse rating | Circuit Protected | |
FUSE |
SENSOR 1 | 15A | Oxygen Sensor (Up/Down), E/R Junction Block (Cooling Fan Relay) |
IGN COIL | 20A | Ignition Coil #1/#2/#3/#4 | |
ECU 2 | 10A | PCM | |
TCU 1 | 10A | PCM | |
HEV ECU 2 | 10A | HPCU, E/R Junction Block (Battery C/Fan Relay) | |
ECU 3 | 10A | PCM | |
POWER OUT- LET2 | 20A | Front Power Outlet #1 | |
HORN | 20A | Horn Relay, ICM Relay Box (Burglar Alarm Horn Relay) | |
WIPER 1 | 30A | Wiper Power Relay | |
BATTERY C/FAN | 15A | E/R Junction Block (Battery C/Fan Relay) |
Relay
Relay Name | Type |
COOLING FAN Relay | MINI |
BLOWER Relay | MICRO |
BATTERY C/FAN Relay | MICRO |
H/LAMP HI Relay | MICRO |
POWER OUTLET Relay | MICRO |
H/LAMP WASHER Rela | MICRO |
DEICER Relay | MICRO |
REAR HEATED Relay | MINI |
PTC HEATER 1 | MINI |
PTC HEATER 2 | MINI |
IG3 3 | MICRO |
Battery terminal cover![Kia-Optima-Phev-2019-Fuses-and-Fuse-Box-How-To-Check-and-Fix-fig-14](https://www.autouserguide.com/wp-content/uploads/2023/12/Kia-Optima-Phev-2019-Fuses-and-Fuse-Box-How-To-Check-and-Fix-fig-14.jpg)
NOTICE
Not all fuse panel descriptions in this manual may be applicable to your vehicle. It is accurate at the time of printing. When you inspect the fuse panel in your vehicle, refer to the fuse panel label on the inside of the fuse cover. This diagram will provide you with the specific information for your vehicles.
FAQs
Fuses are protective devices designed to prevent electrical overloads and protect the vehicle’s electrical components from damage.
The fuse box in the 2019 Kia Optima PHEV is typically located in the engine compartment or within the interior of the vehicle.
To access the fuse box, consult your owner’s manual for its exact location, as it may vary slightly. Typically, you’ll need to open the hood or locate an interior panel.
You’ll need a fuse puller or a pair of needle-nose pliers, a flashlight, and replacement fuses of the appropriate amperage.
Visually inspect the fuse to see if the metal strip inside is intact. A blown fuse will have a broken or burnt-out strip.
Replace the blown fuse with one of the same amperage rating. Refer to your owner’s manual for the correct amperage for each fuse.
No, it’s crucial to use the correct amperage fuse to prevent electrical damage or fire hazards.
Common signs include non-functioning electrical components, such as lights, power windows, or the radio.
Always disconnect the vehicle’s battery before working on the fuse box to reduce the risk of electrical shock.
You can use a multimeter set to continuity mode to check if a fuse is functioning without removing it.
If you can’t find the issue, it’s advisable to consult a professional mechanic or an authorized Kia service center.
No, never use objects like coins or aluminum foil to bypass a blown fuse. This can cause serious electrical damage or fires.
Yes, the fuse box may contain separate fuses for various electrical systems, such as lighting, audio, and power windows.
Regularly inspect your vehicle’s electrical components and fuses, and address any issues promptly to prevent larger problems.
Circuit breakers typically reset automatically once the electrical overload is resolved. If not, consult your owner’s manual or a professional.
Useful Link
View Full PDF: Kia Optima Phev 2019 User Manual
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