2025 Kia K4 Fuses and Fuse Box User Guide

2025 Kia K4 Fuses and Fuse Box User Guide

This tutorial will teach you how to maintain and troubleshoot the electrical system of your car by covering the 2025 Kia K4 fuses and fuse box. Time can be saved and expensive repairs can be avoided by being aware of fuse kinds, locations, and replacements.

2024 kia K5 Specs, Price, Features, Mileage and Review

Video: 2025 Kia K4 Fuses 

Kia Fuses Guide

A vehicle’s electrical system is protected from electrical overload damage by fuses.

Blade type

Cartridge type

Multi fuse

BFT

Left side: Normal, Right side: Blown 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, accesso-ries, 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. If the replacement fuse blows, this indi-cates 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, car-tridge type, and multi fuse for higher amperage ratings.

WARNING

Fuse replacement

• Never replace a fuse with anything other than a fuse of the same rating.
• A higher capacity fuse could cause damage and possibly a fire.
• Never install a wire or aluminum foil instead of the proper fuse – even as a temporary repair. It may cause exten-sive 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 battery (-) terminal.
• The actual fuse/relay panel label may differ from equipped items.

WARNING

Electrical Fire
Always ensure replacements fuses and relays are securely fastened when installed. Failure to do so can result in a vehicle fire. Do not remove fuses, relays and termi-nals fastened with bolts or nuts. The fuses, relays and terminals may be fas-tened incompletely, and it may cause a possible fire. If fuses, relays and termi-nals fastened with bolts or nuts are blown, consult with an authorized Kia dealer.

CAUTION
When replacing a blown fuse or relay, ensure 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.

CAUTION

• Do not put objects except fuses or relays into fuse/relay terminals such as a screwdriver or wiring. It may cause contact failure and system malfunction.
• Do not plug in screwdrivers or aftermarket wiring into the terminal originally designed for fuse and relays only. The electrical system and wiring of the vehicle interior may be damaged or burned due to contact failure.
• If you directly connect the wire on the taillight or replace the bulb which is over the regulated capacity to install trailers etc., the inner junction block can get burned.

WARNING

Electrical wiring repairs
All electrical repairs should be per-formed by authorized Kia dealerships using approved Kia parts. Using other wiring components, especially when ret-rofitting multimedia or a theft alarm sys-tem, car phone or radio may cause vehicle damage and increase the risk of a vehicle fire.

NOTICE

Rewiring 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 vehicle may also void your warranty and you may be responsible for any subsequent vehicle damage which may result.

Replacing inner panel fuse

1. Turn the ENGINE START/STOP button and all other switches off.
2. Open the fuse panel cover.
   
3. Pull the suspected fuse straight out. Use the removal tool provided on the engine fuse panel cover.
   
4. Check the removed fuse; replace it if it is blown. Spare fuses are provided in the engine compartment fuse panel.
5. 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 head lamp, turn signal lamp, stop signal lamp, fog lamp, DRL, tail lamp, High Mounted Stop Lamp (HMSL) 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 signal lamp, or tail lamp malfunction even with-out any problem to the lamps, have the vehicle checked by an authorized Kia dealer for assistance.

Replacing engine compartment fuse

1. Turn the ENGINE START/STOP button and all other switches off.
2. Remove the fuse panel cover by pressing the tab and pulling the cover up.
   
3. 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.
4. Push in a new fuse of the same rating and make sure it fits tightly in the clips. If it fits loosely, consult an autho-rized Kia dealer.

CAUTION
Always securely install the fuse panel cover in the engine compartment to pro-tect against electrical failure which may occur from water contact. Listen for the audible clicking sound to ensure fuse panel cover is securely fastened.

NOTICE
If the main (multi) fuse is blown, have the vehicle checked by an authorized Kia dealer.

NOTICE
The electronic system may not function correctly even when the engine com-partment and internal fuse box’s individ-ual fuses are not disconnected. In such cases, the cause of the problem may be 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. After checking the fuse panel in the engine compartment, securely install the fuse panel cover. Electrical failures may occur from water contact.

Main fuse (Multi fuse)

If the multi fuse is blown, it must be removed as follows:

1. Turn the ENGINE START/STOP button and all other switches off.
2. Disconnect the negative battery cable.
3. Remove the nuts shown in the picture above.
4. Replace the fuse with a new one of the same rating.
5. Reverse these steps to reinstall the multi fuse.

NOTICE
Do not modify 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.

Battery fuse
If the battery fuse is blown, it must be removed as follows:

1. Disconnect the negative battery cable.
2. Remove the nuts shown in the picture below.
   
3. Replace the fuse with a new one of the same rating.
4. Reinstall in the reverse order of removal.

NOTICE
If the battery fuse is blown, 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 elec-trical components.

Fuse/relay panel description
Inside the fuse/relay panel covers, you can find the fuse/relay label describing fuse/relay name and capacity.

Driver’s side fuse panel

Refer to the following table for a description of the fuse.

NOTICE
Not all fuse panel descriptions in this manual may apply to your vehicle. They are 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 dia-gram will provide you with the specific information for your vehicles.

PDC Junction Block

Fuse Name	Fuse rating	Circuit Protected
A/C2	7.5A	DATC (Dual Auto Temperature Control)/MTC (Manual Temperature Con- trol), Engine Room Junction Block PTC (Positive Temperature Coefficient Heater) Heater Relay 1-2, Air con – Comp ( Smartstream G1.6 T-GDi)
AIR BAG1	10A	ACU (Airbag Control Unit), AIR BAG, ODS (Occupant (Central Communica- tion Unit) Detection System)
AIR BAG2	10A	ACU (Airbag Control Unit), AIR BAG
AMP	25A	AMP (Amplifier), LDC (Low voltage DC-DC Converter) 450
BDC1	10A	BDC (Body Domain Controller), Bluetooth Unit, UWB (Ultra Wide Band) Unit, ATM LEVER(AT/CVT/DCT)
BDC2	7.5A	BDC (Body Domain Controller), BMS (Battery Management System)
BRAKE SWITCH	7.5A	BDC (Body Domain Controller), Stop Lamp Switch
CCU	10A	CCU (Central Communication Unit)
CLUSTER	7.5A	Cluster, HUD (Head Up Display)
DOOR LOCK	20A	Door Lock Relay, Door Unlock Relay, Two Turn Unlock/Dead lock Relay
MDPS2	7.5A	MDPS (Motor Driven Power Steering)
MEMORY1	10A	Cluster, MTC ((Manual Temperature Control)), DATC (Dual Auto Tempera- ture Control), Mood Lamp, PDW Sensor
MEMORY2	7.5A	FRT USB Jack, Wireless Charging
MODULE1	10A	BDC (Body Domain Controller), DCU (Domain Control Unit), CCU (Central Communication Unit), VDMS, AVN Keyboard, Overhead Console E-CALL, ADAS (Advanced Driver Assistance System) PRK ECU (electronic Control Unit), AMP (Amplifier), CCNC (Connected Car Navigation & Cockpit), LDC (Low voltage DC-DC Converter), Engine Room Junction Block Power Out- let Relay
MODULE2	10A	CCU (Central Communication Unit), DCU (Domain Control Unit)(E-CALL)
MODULE3	10A	Power Window Switch (DRV)
MODULE4	10A	LKAS (Lane Keeping Assist System) Camera, ADAS (Advanced Driver Assistance System) DRV, Console Upper, ADAS (Advanced Driver Assis- tance System) Parking ECU (electronic Control Unit)
MODULE5	10A	ICC (In Cabin Camera) Unit, CCNC (Connected Car Navigation & Cockpit), MUT/VDMS Overhead Console PAB, I/S MIRROR ECM, DATC (Dual Auto Temperature Control)/MTC (Manual Temperature Control) PANEL, Con- sole Upper, CDU, Wireless Charging, LDC (Low voltage DC-DC Converter) 200/450, AMP (Amplifier), SEAT(IMS), Front Door Switch, Head Lamp LH/ RH, C/PAD Switch
MODULE6	7.5A	BDC (Body Domain Controller)
MODULE7	7.5A	P-LBM (Parking Lithium Battery Module), W/S Heated Glass LH/RH Coil
MODULE8	10A	Smart Key Interlock, Rain Sensor, Hazard, MUT/PTG_A(WAG), ICC (In Cabin Camera) Unit
MODULE9	10A	Power Window Switch (DRV), IMS ECU (Electronic Control Unit), Digital Key
MULTIMEDIA	25A	CCNC (Connected Car Navigation & Cockpit), LDC (Low voltage DC-DC Converter)_200
OMU	15A	Out Side Mirror Motor DRV/PASS
P/SEAT DRV	30A	Power Seat (DRV)

 

Fuse Name	Fuse rating	Circuit Protected
P/WINDOW DRV	15A	Power Window DRV Up/Down Relay
P/WINDOW LH	25A	Safety ECU (Electronic Control Unit) DRV/PASS/RL, Power Window Switch RL/PASS
P/WINDOW RH	25A	Safety ECU (Electronic Control Unit) DRV/PASS/RR, Power Window Switch RR/PASS
S/HEATER FRT	25A	Seat Heater/Vent (FRT)
S/HEATER RR	25A	Seat Heater (RR)
SPARE	10A	SPARE
SPARE	15A	SPARE
SPARE	10A	SPARE
SPARE	10A	SPARE
SPARE	7.5A	SPARE
START	7.5A	Start Inhibit Relay, Inhibit Switch, IGN Switch
SUNROOF	20A	SUNROOF
TRUNK OPEN	10A	Trunk Open Relay
USB CHARGER1	15A	Rear USB Charger, Start/Stop Button
USB CHARGER2	10A	USB Charger
WASHER	15A	WASHER
wireless DCU	7.5A	DCU (Domain Control Unit)

MDPS (Motor Driven Power Steering) is the same as EPS (Electric Power Steer-ing).

Engine compartment fuse panelRefer to the following table for a description of the fuse.

Engine Room Junction Block

Fuse Name	Fuse rating	Circuit Protected
A/C1	10A	A/C Relay
ABS1	25A	ESC (Electronic Stability Control) Unit, ABS (Anti-lock Brake System) Unit, EPB (Electronic Parking Brake) Unit
ABS2	15A	ESC (Electronic Stability Control) Unit, ABS (Anti-lock Brake System) Unit, EPB (Electronic Parking Brake) Unit
ABS3	10A	ESC (Electronic Stability Control) Unit, ABS (Anti-lock Brake System) Unit, EPB (Electronic Parking Brake) Unit

 

Fuse Name	Fuse rating	Circuit Protected
ALT	180A	Alternator Output, MHSG (Mild Hybrid Starter and Generator) Out- put, BATT +
AMS	10A	Battery Sensor
AUX BATT	50A	P-LBM (Lithium Battery)
B+1	60A	PDC (IPS1, IPS2, IPS3, IPS4, IPS5, IPS6, IPS7)
B+2	50A	PDC (IPS8, IPS9, IPS10, IPS11, IPS12)
B+3	60A	PDC (Fuse – SPARE, P/SEAT DRV, S/HEATER FRT, P/WINDOW(LH/ RH/DRV), OMU, SUNROOF, wireless DCU, MODULE8
B+4	60A	PDC (Relay – Long Term Load Latch Relay, DOOR LOCK/UNLOCK Relay, Two Turn Unlock/Dead Lock Relay, Trunk/Tailgate Open Relay, Fuse – MULTIMEDIA, MEMORY1, MEMORY2, BDC1, BREAKE SWITCH, CCU, S/HEATER RR, DOOR LOCK, Trunk Open, Tailgate Open)
B+5	50A	PDC (Fuse – AMP, AIR BAG2, BMS, MODULE9, BATTERY C/FAN, A/ C3, USB CHARGER2
B+6	60A	Engine Room Junction Block PCB Block
BLOWER	50A	Blower Motor Relay
COOLING FAN1	80A	Cooling Fan BLDC ( Brushless Direct Current Motor)
COOLING FAN2	40A	Cooling Fan 1, 2 Relay
CVVD	40A	CVVD (Continuous Variable Valve Duration) Actuator
ECU1	20A	ECM (Engine Control Module)
ECU2	15A	ECM (Engine Control Module)
ECU3	15A	ECM (Engine Control Module)
ECU4	10A	ECM (Engine Control Module)
ECU5	10A	ECM (Engine Control Module)
FUEL PUMP1	20A	Fuel Pump Relay
FUEL PUMP2	10A	Fuel Pump Relay
HEAD LAMP LH	20A	HEAD LAMP LH
HEAD LAMP RH	20A	HEAD LAMP RH
HEATED MIRROR	15A	ECU (Electronic Control Unit), Driver/Passenger Power Outside Mir- ror
HORN	15A	HORN Relay
IG1	40A	IG1 Relay, ACC Relay, IGN SW
IG2	40A	IGN SW, IG2 Relay, Start Relay
IGN COIL	20A	Ignition Coil
INJECTOR	15A	Injector, MHSG (Mild Hybrid Starter and Generator) Signal
MDPS1	80A	MDPS (Motor Driven Power Steering) Unit
POWER OUTLET1	40A	Engine Room Junction Block Power Outlet Relay
POWER OUTLET2	20A	Power Outlet FRT
POWER OUTLET3	20A	Power Outlet Luggage
PTC HEATER	50A	PTC (Positive Temperature Coefficient) Heater Relay
REAR HEATED	50A	Rear Heated Relay

2024 kia K5 Specs, Price, Features, Mileage and Review

Fuse Name	Fuse rating	Circuit Protected
SENSOR1	15A	O2 Sensor
SENSOR2	10A	OCV (Oil Control Valve), Oil Level Sensor, PCSV (Purge Control Solenoid Valve), VIS (Variable Induction System)/VOP (Variable Oil Pump), RCV (Recirculation Control Valve)/OPSV, CCV (Canister Close Valve)
SENSOR3	15A	Cooling Fan BLDC ( Brushless Direct Current Motor), Cooling Fan Hight Relay, Cooling Fan Low Relay
SPARE	15A	SPARE
SPARE	20A	SPARE
SPARE	20A	SPARE
SPARE	7.5A	SPARE
SPARE	10A	SPARE
SPARE	10A	SPARE
SPARE	10A	SPARE
TCU1	15A	TA8 8AT(Automatic Transmission), TCU (Transmission Control Unit), 6AT TCU, CVT (Continuously Variable Transmission) TCU, 7DCT(Dual Clutch Transmission) TCU
TCU2	15A	7DCT(Dual Clutch Transmission) TCU (Transmission Control Unit), 8AT(Automatic Transmission) TCU
WIPER FRT1	30A	Wiper Motor, Wiper FRT Low Relay
WIPER FRT2	10A	BDC
WIPER RR	15A	Rear Wiper

1. MDPS (Motor Driven Power Steering) is the same as EPS (Electric Power Steering).

Relay Name	Type
Blower Relay	MICRO
Cooling Fan1 Relay	MINI
Cooling Fan2 Relay	MICRO
Fuel Pump Relay	MINI
Power Window DRV1 Relay	MICRO
Power Window DRV2 Relay	MICRO
Power Outlet Relay	MINI
PTC Heater Relay	MICRO
Rear Heated Relay	MINI
Start Relay	MICRO
Wiper RR Relay	MICRO

 

How to Replace the Fuses of the 2025 Kia K4

Replacing the fuses in your 2025 Kia EV9 is a straightforward process, but it’s important to follow the proper steps to ensure safety and that you replace the correct fuse. Here’s how you can do it:

Materials:

1. The new fuse of the correct amperage.
2. Fuse puller or needle-nose pliers.

Steps to Replace Fuses:

1. Locate the Fuse Box:
   • The 2025 Kia K4 typically has two fuse boxes:
     • One inside the cabin (usually under the dashboard or near the driver’s side panel).
     • One in the engine compartment.
2. Access the Fuse Box:
   • Open the panel or cover of the fuse box. Some covers may require gentle prying with a tool or pressing a latch.
3. Identify the Blown Fuse:
   • Check the fuse visually. A blown fuse will have a broken wire inside or appear darkened.
4. Remove the Blown Fuse:
   • Use a fuse puller or needle-nose pliers to carefully extract the faulty fuse.
5. Replace with a Correct Fuse:
   • Match the amp rating of the replacement fuse to the original (e.g., 10A, 15A). Installing the wrong rating can cause electrical issues or fire risks.
6. Test the System:
   • After replacing the fuse, test the associated component (e.g., lights or radio) to confirm functionality.
7. Close the Fuse Box:
   • Secure the cover back onto the fuse box.
8. Tips:
   • Always use a fuse with the correct amperage rating to prevent electrical issues or damage to the vehicle.

Useful Links:

2024 kia K5 Specs, Price, Features, Mileage and Review

2025 Kia K4 Instrument Cluster User Guide

2025 Kia K4 Tires and Wheels User Guide

Video: 2025 Kia K4 Fuses