2020 Kia Cadenza Fuses and Fuse Box | Checking and replacing fuses
The electrical system of the 2020 Kia Cadenza, a high-end sedan renowned for its comfort and cutting-edge amenities, is essential to a smooth driving experience. Fundamental parts that guard the 2020 Kia Cadenza’s numerous electrical circuits against overcurrent and electrical failures are the fuses and fuse box. Maintaining the Kia Cadenza’s operation and swiftly addressing electrical problems depend on your ability to check and replace the fuse box. Knowing the fundamentals of the fuse system will enable you to maintain your Kia Cadenza operating smoothly and guarantee a dependable and pleasurable ride, whether you run into an electrical issue or need to do routine maintenance. We’ll go over how to inspect and change the fuses in your 2020 Kia Cadenza in this tutorial, giving you the skills and assurance you need to deal with electrical problems successfully.
FUSES
A vehicle’s electrical system is pro-tected from electrical overload damage 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 ratings, 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 the 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.
Inner panel fuse replacement
- Turn the ignition switch 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.
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 fas-tened correctly which may cause vehicle damage.
- 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 head lamp, turn signal lamp, stop signal lamp, fog lamp, tail lamp, or 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 malfunctions even without any problem to the lamps, have the vehicle checked by an authorized Kia dealer for assis-tance.
CAUTION – Fuse Panel Covers
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).
NOTICE
- Set all switches to ON before driv-ing.
- If the vehicle is going to be unused for over 1 month, set all switches to OFF to prevent the batteries from draining.
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 the audio and digital clock must be reset and the 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 ignition switch 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 through the audible clicking sound. If not, electrical failures may occur from water contact.
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.
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.
Instrument panel (Driver’s side fuse panel)
| Fuse Name | Fuse rating | Circuit Protected |
| MODULE 7 | 10A | Driver Door Module, Passenger Door Module |
| MODULE 3 | 10A | Stop Lamp Switch, BCM (Body Control Module), Sports Mode Switch |
|
MODULE 5 |
10A |
Console Switch, Blind-Spot Collision Warning Unit Left Handle side/Right Handle side, BCM (Body Control Module), Crash Pad Switch, Fuel Filler & Trunk Open Switch, Lane Keeping Assist Unit (Line), Steering Tilt & Telescopic Module, Smart Cruise Control Unit, Parking Collision Avoidance Assist Unit |
| IG 1 | 25A | PCB Block (Fuse – TCU 2, ECU 3, ABS 3) |
| MDPS | 7.5A | MDPS (Motor Driven Power Steering) Unit |
|
MODULE 6 |
10A |
Air Conditioner Switch, Air Conditioner Control Module, Electro Chromic Mirror, Wireless Charger Unit, Front Seat Warmer Control Module, Front Air Ventilation Seat Control Module, Rear Seat Warmer Control Module, Audio/Video & Navigation Head Unit, Audio, Driver Integrated Memory System Module, Automatic Transmission Shift Lever Indicator |
| CLUSTER | 10A | Instrument Cluster, Head-Up Display |
| AIR BAG | 15A | SRS (Supplemental Restraint System) Control Module, Passenger Occupant Detection Sensor |
| MULTIMEDIA 1 | 20A | IGPM (Integrated Gateway Power control Module), Audio/Video & Navigation Head Unit, Audio |
| A/BAG IND | 7.5A | Air Conditioner Switch, Instrument Cluster |
| MODULE 4 | 10A | Smart Key Control Module, Immobilizer Module |
| SPARE 2 | 10A | Spare |
| Fuse Name | Fuse rating | Circuit Protected |
| A/C | 7.5A | Air Conditioner Switch, Air Conditioner Control Module, Ionizer, Engine Room Junction Block (Blower Relay) |
|
MEMORY 1 |
10A |
Head-Up Display, Instrument Cluster, Blind-Spot Collision Warning Unit Left Handle side/Right Handle side, Driver Door Module, Power Trunk Module, Passenger Door Module, Air Conditioner Switch, Air Conditioner Control Module, Security Indicator, BCM (Body Control Module) |
| MEMORY 2 | 15A | Driver Door Module |
| MEMORY 3 | 10A | Passenger Door Module |
| START | 7.5A | Transmission Range Switch |
| HEATED STEERING | 15A | BCM (Body Control Module) |
| MODULE 9 | 7.5A | Surround View Monitor Unit, Rear Seat Warmer Control Module, Front Seat Warmer Control Module, Front Air Ventilation Seat Control Module, Parking Collision Avoidance Assist Unit |
| WASHER | 15A | Multifunction Switch |
| INTERIOR LAMP |
10A |
Glove Box Lamp, Passenger Foot Lamp, Driver Foot Lamp, Room Lamp, Front Vanity Lamp Switch Left Handle side/Right Handle side, Overhead Console Lamp, Trunk Room Lamp, Rear Personal Lamp Left Handle side/Right Handle side |
| DOOR LOCK | 20A | Door Lock/Unlock Relay |
| S/HEATER (FR) | 25A | Front Seat Warmer Control Module, Front Air Ventilation Seat Control Module |
| SMART KEY 2 | 10A | Start/Stop Button Switch |
| BRAKE SWITCH | 10A | Stop Lamp Switch, Immobilizer Module, Smart Key Control Module |
| AMP | 30A | AMP (Amplifier) |
| Fuse Name | Fuse rating | Circuit Protected |
| P/WINDOW (RH) | 25A | Passenger Safety Power Window Module, Rear Power Window Switch Right Handle side, Rear Safety Power Window Module Right Handle side |
| SUNROOF 1 | 20A | Sunroof Control Unit (Glass) |
| TRUNK | 10A | Trunk Relay, Fuel Filler & Trunk Open Switch, PCB Block (Fuel Lid Relay) |
| MULTIMEDIA 2 | 10A | Not Used |
| POWER TRUNK | 30A | Power Trunk Module |
| S/HEATER (RR) | 25A | Rear Seat Warmer Control Module |
| E-SHIFTER 2 | 10A | Electronic Automatic Transmission Shift Lever (SBW) |
| P/WINDOW (LH) | 25A | Rear Power Window Switch Left Handle side, Driver Safety Power Window Module, Rear Safety Power Window Module Left Handle side |
| P/SEAT (PASS) | 25A | Passenger Seat Manual Switch |
| SUNROOF 2 | 20A | Sunroof Control Unit (Roller) |
| POWER HANDLE | 15A | Steering Tilt & Telescopic Module |
| SPARE 1 | 10A | Spare |
| SMART KEY 1 | 15A | Smart Key Control Module |
| MODULE 1 | 7.5A | Data Link Connector, Hazard Lamp Switch, Console Switch, Console Mood Lamp, Mood Lamp Unit, Mood Lamp Right Handle side |
| Fuse Name | Fuse rating | Circuit Protected |
| P/SEAT (DRV) | 25A | Driver Seat Manual Switch, Driver Integrated Memory System Module |
| USB CHARGER | 10A | Front USB Charger, Rear USB Charger Left Handle side/Right Handle side |
|
MODULE 2 |
10A |
AMP (Amplifier), Surround View Monitor Unit, BCM (Body Control Module), Smart Key Control Module, Parking Collision Avoidance Assist Unit, Audio, Audio/Video & Navigation Head Unit, Engine Room Junction Block (Power Outlet Relay) |
| SPARE 3 | 10A | Spare |
| MODULE 8 | 7.5A | BCM (Body Control Module), Smart Key Control Module |
| E-SHIFTER 1 | 10A | Electronic Automatic Transmission Shift Lever (SBW), SCU |
Engine compartment fuse panel
Engine room compartment fuse panel
| Fuse Name | Fuse rating | Circuit Protected | |
|
MULTI FUSE |
MDPS | 80A | MDPS (Motor Driven Power Steering) UNIT |
| B+2 | 60A | IGPM (Integrated Gateway Power control Module) | |
| BLOWER | 50A | Blower Relay | |
| B+3 | 50A | IGPM (Integrated Gateway Power control Module) | |
| REAR HEATED | 50A | Rear Heated Relay | |
| ABS 1 | 40A | ESC (Electronic Stability Control) Module | |
| IG 2 | 30A | Without Smart Key : Start Relay, Ignition Switch
With Smart Key : Start Relay, PCB Block (IG 2 Relay) |
|
| B+5 | 80A | PCB BLOCK (Fuse – WIPER 1, HORN, ECU 2, E-SHIFTER 2, CRUISE, Engine Control Relay) | |
| B+1 | 60A | IGPM (Integrated Gateway Power control Module) | |
| COOLING FAN 2 | 60A | Cooling Fan 1 Relay, Cooling Fan 2 Relay | |
| B+4 | 50A | IGPM (Integrated Gateway Power control Module) | |
| POWER OUTLET 1 | 40A | Power Outlet Relay | |
| IG 1 | 40A | Without Smart Key : Ignition Switch
With Smart Key : PCB Block (IG 1 Relay, ACC Relay) |
|
| ABS 2 | 30A | ESC (Electronic Stability Control) Module | |
| Fuse Name | Fuse rating | Circuit Protected | |
|
FUSE |
E-SHIFTER 1 | 30A | SCU |
| TCU 1 | 15A | TCM (Transmission Control Module) | |
| FUEL PUMP | 20A | Fuel Pump Relay | |
| AMS | 10A | Battery Sensor | |
| DEICER | 20A | Deicer Relay | |
| A/C 2 | 10A | A/C Relay | |
| AC 1 | 10A | Air Conditioner Control Module | |
| WIPER 2 | 10A | BCM (Body Control Module), ECM (Engine Control Module) | |
| HEATED MIRROR | 10A | Air Conditioner Switch, Driver/Passenger Power Outside Mirror | |
| ECU 3 | 10A | ECM (Engine Control Module) | |
| POWER OUTLET 2 | 20A | Front Power Outlet | |
| HORN | 20A | Horn Relay | |
| WIPER 1 | 30A | Wiper Power Relay | |
| Fuse Name | Fuse rating | Circuit Protected | |
|
FUSE |
TCU 2 | 15A | TCM (Transmission Control Module), Transmission Range Switch |
| ABS 3 | 10A | ESC (Electronic Stability Control) Module | |
| POWER OUTLET 3 | 20A | Not Used | |
| SENSOR 1 | 15A | Oxygen Sensor #1~#4, Electronic Thermostat | |
| IGN COIL | 20A | Ignition Coil #1~#6 | |
| ECU 2 | 10A | ECM (Engine Control Module) | |
| CRUISE | 10A | Smart Cruise Control Unit | |
| SENSOR 3 | 10A | Engine Room Junction Block (Fuel Pump Relay) | |
| ECU 1 | 20A | ECM (Engine Control Module) | |
| INJECTOR | 15A | Not Used | |
|
SENSOR 2 |
10A |
Variable Intake Solenoid Valve #1/#2, Purge Control Solenoid Valve, Canister Close Valve, Oil Pressure Solenoid Valve, Oil Control Valve #1~#4, Engine Room Junction Block (Cooling Fan 1 Relay, Cooling Fan 2 Relay, A/C Relay, Fuel Pump Relay) | |
| E-SHIFTER 2 | 10A | SCU | |
Relay
| Relay Name | Type |
| Blower Relay | MINI |
| Cooling Fan 1 Relay | MINI |
| Cooling Fan 2 Relay | MINI |
| Power Outlet Relay | MICRO |
| Start Relay | MICRO |
| A/C Relay | MICRO |
| Front Deicer Relay | MICRO |
| Fuel Pump Relay | MICRO |
| Rear Heated Relay | MINI |
Engine compartment fuse panel (Battery terminal cover)
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.
FAQs
The fuse box in the 2020 Kia Cadenza houses fuses that protect various electrical circuits from overcurrent or electrical faults.
The main fuse box is typically located in the engine compartment of the vehicle.
To access the fuse box, open the cover, which is usually secured with clips or screws. Refer to your owner’s manual for specific instructions.
The 2020 Kia Cadenza may use blade fuses or mini fuses, depending on the model and trim.
You can visually inspect the fuses to check if the metal strip inside is intact or broken. A broken strip indicates a blown fuse.
Replace the blown fuse with one of the same amperage rating to restore the circuit’s functionality.
Consult your owner’s manual or the fuse box cover for a diagram that identifies the functions of each fuse.
No, using a fuse with a higher amperage rating can lead to electrical damage. Always replace fuses with the correct rating.
Blown fuses can result from electrical faults, overloads, short circuits, or issues with various vehicle components.
Some vehicles may come with spare fuses stored in the fuse box, while others may not. Check your owner’s manual for details.
You can replace a fuse yourself as long as you follow safety precautions and use the correct replacement fuse. If unsure, consult a professional mechanic.
Typically, you’ll only need a pair of needle-nose pliers or a fuse puller tool to remove and replace a fuse.
It depends on which circuit the blown fuse affects. If it’s a critical component like headlights or brake lights, it’s not safe to drive until it’s fixed.
Fuses can blow due to various factors, including age, wear, electrical issues, or unexpected faults.
Regularly inspect fuses when you notice electrical problems or during routine maintenance to ensure they are in good condition.
Useful Link
View Full PDF: Kia Cadenza 2020 User Manual
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