Fuse Box Diagrams

2026 Kia K4 Fuse Box Diagram

The 2 fuse boxes on the 2026 Kia K4, with every fuse and relay. Tap a fuse to see what it protects, or search for the thing that stopped working.

Year20252026All years

Where it isSee the owner's manual.

Slot map: the fuses are listed in the manual's order, not where they sit in the box. Match the numbers to the label inside the box cover.

FUSE PANEL · SLOT MAP, NOT TO SCALEA/C27.5AAIR BAG110AAIR BAG210AAMP25ABDC110ABDC27.5ABRAKE SWITCH7.5ACCU10ACLUSTER7.5ADOOR LOCK20AMDPS27.5AMEMORY110AMEMORY27.5AMODULE110AMODULE210AMODULE310AMODULE410AMODULE510AMODULE67.5AMODULE77.5AMODULE810AMODULE910AMULTIMEDIA25AOMU15AP/SEAT DRV30AP/WINDOW DRV15AP/WINDOW LH25AP/WINDOW RH25AS/HEATER FRT25AS/HEATER RR25ASPARE10ASTART7.5ASUNROOF20ATRUNK OPEN10AUSB CHARGER115AUSB CHARGER210AWASHER15Awireless DCU7.5A

2026 K4 fuse panel fuses

Fuse panel. Tap a row to find it on the diagram.

No.AmpsTypeProtects
A/C27.5AFuse (size not listed)DATC (Dual Auto Temperature Control)/MTC (Manual Temperature Control), Engine Room Junction Block PTC (Positive Temperature Coefficient Heater) Heater Relay 1-2, Air con - Comp ( Smartstream G1.6 T-GDi)
AIR BAG110AFuse (size not listed)ACU (Airbag Control Unit), AIR BAG, ODS (Occupant (Central Communication Unit) Detection System)
AIR BAG210AFuse (size not listed)ACU (Airbag Control Unit), AIR BAG
AMP25AFuse (size not listed)AMP (Amplifier), LDC (Low voltage DC-DC Converter) 450
BDC110AFuse (size not listed)BDC (Body Domain Controller), Bluetooth Unit, UWB (Ultra Wide Band) Unit, ATM LEVER(AT/CVT/DCT)
BDC27.5AFuse (size not listed)BDC (Body Domain Controller), BMS (Battery Management System)
BRAKE SWITCH7.5AFuse (size not listed)BDC (Body Domain Controller), Stop Lamp Switch
CCU10AFuse (size not listed)CCU (Central Communication Unit)
CLUSTER7.5AFuse (size not listed)Cluster
DOOR LOCK20AFuse (size not listed)Door Lock Relay, Door Unlock Relay, Two Turn Unlock
MDPS27.5AFuse (size not listed)MDPS (Motor Driven Power Steering)
MEMORY110AFuse (size not listed)Cluster, MTC ((Manual Temperature Control)), DATC (Dual Auto Temperature Control), Mood Lamp, PDW Sensor
MEMORY27.5AFuse (size not listed)FRT USB Jack, Wireless Charging
MODULE110AFuse (size not listed)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 Conve
MODULE210AFuse (size not listed)CCU (Central Communication Unit), DCU (Domain Control Unit)(E-CALL)
MODULE310AFuse (size not listed)Power Window Switch (DRV)
MODULE410AFuse (size not listed)LKAS (Lane Keeping Assist System) Camera, ADAS (Advanced Driver Assistance System) DRV, Console Upper, ADAS (Advanced Driver Assistance System) Parking ECU (electronic Control Unit)
MODULE510AFuse (size not listed)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, Console Upper, CDU, Wireless Charging, LDC (Low voltage DC-DC Converter) 200/450, AMP (Amplifier), SEAT(I
MODULE67.5AFuse (size not listed)BDC (Body Domain Controller)
MODULE77.5AFuse (size not listed)P-LBM (Parking Lithium Battery Module), W/S Heated Glass LH/RH Coil
MODULE810AFuse (size not listed)Smart Key Interlock, Rain Sensor, Hazard, MUT/PTG_A(WAG), ICC (In Cabin Camera) Unit
MODULE910AFuse (size not listed)Power Window Switch (DRV), IMS ECU (Electronic Control Unit), Digital Key
MULTIMEDIA25AFuse (size not listed)CCNC (Connected Car Navigation & Cockpit), LDC (Low voltage DC-DC Converter)_200
OMU15AFuse (size not listed)Out Side Mirror Motor DRV/PASS
P/SEAT DRV30AFuse (size not listed)Power Seat (DRV)
P/WINDOW DRV15AFuse (size not listed)Power Window DRV Up/Down Relay
P/WINDOW LH25AFuse (size not listed)Safety ECU (Electronic Control Unit) DRV/PASS/RL, Power Window Switch RL/PASS
P/WINDOW RH25AFuse (size not listed)Safety ECU (Electronic Control Unit) DRV/PASS/RR, Power Window Switch RR/PASS
S/HEATER FRT25AFuse (size not listed)Seat Heater/Vent (FRT)
S/HEATER RR25AFuse (size not listed)Seat Heater (RR)
SPARE10AFuse (size not listed)SPAREOnly on: some versions (check the rating on the old fuse)
SPARE15AFuse (size not listed)SPAREOnly on: some versions (check the rating on the old fuse)
SPARE7.5AFuse (size not listed)SPAREOnly on: some versions (check the rating on the old fuse)
START7.5AFuse (size not listed)Start Inhibit Relay, Inhibit Switch, IGN Switch
SUNROOF20AFuse (size not listed)SUNROOF
TRUNK OPEN10AFuse (size not listed)Trunk Open Relay
USB CHARGER115AFuse (size not listed)Rear USB Charger, Start/Stop Button
USB CHARGER210AFuse (size not listed)USB Charger
WASHER15AFuse (size not listed)WASHER
wireless DCU7.5AFuse (size not listed)DCU (Domain Control Unit)

2026 K4 engine bay fuses

Engine compartment fuse panel. Tap a row to find it on the diagram.

No.AmpsTypeProtects
A/C110AFuse (size not listed)A/C Relay
ABS125AFuse (size not listed)ESC (Electronic Stability Control) Unit, ABS (Anti-lock Brake System) Unit, EPB (Electronic Parking Brake) Unit
ABS215AFuse (size not listed)ESC (Electronic Stability Control) Unit, ABS (Anti-lock Brake System) Unit, EPB (Electronic Parking Brake) Unit
ABS310AFuse (size not listed)ESC (Electronic Stability Control) Unit, ABS (Anti-lock Brake System) Unit, EPB (Electronic Parking Brake) Unit
ALT180AFuse (size not listed)Alternator Output, MHSG (Mild Hybrid Starter and Generator) Output, BATT +
AMS10AFuse (size not listed)Battery Sensor
AUX BATT50AFuse (size not listed)P-LBM (Lithium Battery)
B+160AFuse (size not listed)PDC (IPS1, IPS2, IPS3, IPS4, IPS5, IPS6, IPS7)
B+250AFuse (size not listed)PDC (IPS8, IPS9, IPS10, IPS11, IPS12)
B+360AFuse (size not listed)PDC (Fuse - SPARE, P/SEAT DRV, S/HEATER FRT, P/WINDOW(LH/RH/DRV), OMU, SUNROOF, wireless DCU, MODULE8
B+460AFuse (size not listed)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+550AFuse (size not listed)PDC (Fuse - AMP, AIR BAG2, BMS, MODULE9, BATTERY C/FAN, A/C3, USB CHARGER2
B+660AFuse (size not listed)Engine Room Junction Block PCB Block
BLOWER50AFuse (size not listed)Blower Motor Relay
COOLING FAN180AFuse (size not listed)Cooling Fan BLDC ( Brushless Direct Current Motor)
COOLING FAN240AFuse (size not listed)Cooling Fan 1, 2 Relay
CVVD40AFuse (size not listed)CVVD (Continuous Variable Valve Duration) Actuator
ECU120AFuse (size not listed)ECM (Engine Control Module)
ECU215AFuse (size not listed)ECM (Engine Control Module)
ECU315AFuse (size not listed)ECM (Engine Control Module)
ECU410AFuse (size not listed)ECM (Engine Control Module)
ECU510AFuse (size not listed)ECM (Engine Control Module)
FUEL PUMP120AFuse (size not listed)Fuel Pump Relay
FUEL PUMP210AFuse (size not listed)Fuel Pump Relay
HEAD LAMP LH20AFuse (size not listed)HEAD LAMP LH
HEAD LAMP RH20AFuse (size not listed)HEAD LAMP RH
HEATED MIRROR15AFuse (size not listed)ECU (Electronic Control Unit), Driver/Passenger Power Outside Mirror
HORN15AFuse (size not listed)HORN Relay
IG140AFuse (size not listed)IG1 Relay, ACC Relay, IGN SW
IG240AFuse (size not listed)IGN SW, IG2 Relay, Start Relay
IGN COIL20AFuse (size not listed)Ignition Coil
INJECTOR15AFuse (size not listed)Injector, MHSG (Mild Hybrid Starter and Generator) Signal
MDPS180AFuse (size not listed)MDPS (Motor Driven Power Steering) Unit
POWER OUTLET140AFuse (size not listed)Engine Room Junction Block Power Outlet Relay
POWER OUTLET220AFuse (size not listed)Power Outlet FRT
POWER OUTLET320AFuse (size not listed)Power Outlet Luggage
PTC HEATER50AFuse (size not listed)PTC (Positive Temperature Coefficient) Heater Relay
REAR HEATED50AFuse (size not listed)Rear Heated Relay
SENSOR115AFuse (size not listed)O2 Sensor
SENSOR210AFuse (size not listed)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)
SENSOR315AFuse (size not listed)Cooling Fan BLDC ( Brushless Direct Current Motor), Cooling Fan Hight Relay, Cooling Fan Low Relay
SPARE15AFuse (size not listed)SPAREOnly on: some versions (check the rating on the old fuse)
SPARE20AFuse (size not listed)SPAREOnly on: some versions (check the rating on the old fuse)
SPARE7.5AFuse (size not listed)SPAREOnly on: some versions (check the rating on the old fuse)
SPARE10AFuse (size not listed)SPAREOnly on: some versions (check the rating on the old fuse)
TCU115AFuse (size not listed)8AT(Automatic Transmission), TCU (Transmission Control Unit), CVT (Continuously Variable Transmission) TCU
TCU215AFuse (size not listed)8AT(Automatic Transmission) TCU
WIPER FRT130AFuse (size not listed)Wiper Motor, Wiper FRT Low Relay
WIPER FRT210AFuse (size not listed)BDC
WIPER RR15AFuse (size not listed)Rear Wiper Relay The following table shows the relay type: Relay Name 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

Blade fuse colours

  • 5A Tan
  • 7.5A Brown
  • 10A Red
  • 15A Blue
  • 20A Yellow
  • 25A Clear
  • 30A Green
  • 35A Blue-green
  • 40A Orange

Cartridge (J-case) colours

  • 20A Blue
  • 25A White
  • 30A Pink
  • 40A Green
  • 50A Red
  • 60A Yellow

Source: 2026 Kia K4 Owner's Manual, "Fuses" section.

Always replace a fuse with one of the same amp rating. If a new fuse blows straight away, the circuit has a fault.