Where are the Fuse Boxes located in the 2021 Hyundai Tucson?
2021 Hyundai Tucson has 2 main boxes with fuses and relays. One is in the cabin (Passenger Compartment) and another is under the hood (Engine Compartment).
2021 Hyundai Tucson Under Dash Fuse Box and Relay Location
2021 Hyundai Tucson Under Hood Fuse Box and Relay location
The Engine compartment fuse block is in the engine compartment is located on the driver side of the vehicle.
Battery Terminal(main fuse)
2021 Hyundai Tucson under Dash Fuse Box Layout
2021 Hyundai Tucson Under Dash Fuse Box Diagram
2021 Hyundai Tucson under Dash Fuse Box and Relay Details
Assignment of the fuses and relays in the Passenger compartment
| Name | Amp rating | Circuit Protected |
| A/CON 1 | 7.5A | A/C Control Module, Cluster Ionizer (Auto A/C), E/R Junction Block (Blower Relay) |
| WIPER RR | 15A | ICM Relay Box (Rear Wiper Relay), Rear Wiper Motor |
| MODULE 6 | 10A | BCM, Smart Key Control Module |
| WASHER | 15A | Multifunction Switch (Washer Switch) |
| MODULES | 7.5A | Crash Pad Switch, Parking Distance Warning Buzzer, BCM, ATM Shift Lever, 4WD ECM, Console Switch, Blind-Spot Collision Warning Unit LH/RH, Lane Keeping Assist Unit, Forward Collision Avoidance Assist Unit |
| AIR BAG | 15A | SRS Control Module, Passenger Occupant Detection Sensor |
| MODULE 1 | 10A | BCM, Smart Key Control Module, Audio, A/V & Navigation Head Unit, AMP, Power Outside Mirror Switch, PCB Block (Power Outlet Relay), Wireless Charger, Surround View Monitor, Rear USB Charger |
| START | 10A | ICM Relay Box (Burglar Alarm Relay), Transaxle Range Switch |
| MODULE 7 | 7.5A | Front Air Ventilation Seat Control Module, Front Seat Warmer Control Module, Rear Seat Warmer, Surround View Monitor |
| HEATED STEERING | 15A | BCM |
| MODULE 8 | 7.5A | Center Facia Switch, Key Solenoid, Forward Collision Avoidance Assist Unit, Data Link Connector |
| MODULE 4 | 7.5A | Multipurpose Check Connector, A/C Control Module, Audio, A/V & Navigation Head Unit, Electro Chromic Mirror, Front Air Ventilation Seat Control Module, ATM Shift Lever ILL., Front Seat Warmer Control Module, Rear Seat Warmer |
| A/BAG IND | 7.5A | Instrument Cluster, Center Facia Switch |
| MODULE 3 | 10A | BCM, ATM Shift Lever, Stop Lamp Switch |
| SMART KEY1 | 15A | Smart Key Control Module |
| MODULE 9 | 10A | BCM, Security Indicator, Rain Sensor |
| 4WD | 20A | 4WD ECM |
| TAILGATE OPEN | 10A | Tail Gate Open Relay |
| S/HEATER RR | 15A | Rear Seat Warmer |
| MDPS | 7.5A | MDPS Unit |
| SMART KEY 3 | 7.5A | Smart Key Control Module, Immobilizer Module |
| CLUSTER | 7.5A | Instrument Cluster (IG1 Power) |
| SMART KEY 2 | 10A | Smart Key Control Module, Start/Stop Button Switch, Immobilizer Module |
| MULTIMEDIA | 15A | Audio, A/V & Navigation Head Unit |
| INTERIOR LAMP | 10A | Ignition Key III. & Door Warning Switch, Luggage Lamp, Glove Box Lamp, Overhead Console Lamp, Front Vanity Lamp LH/RH, Room Lamp, Rear Personal Lamp LH/RH, Wireless Charger |
| DOOR LOCK | 20A | Door Lock Relay, Door Unlock Relay, ICM Relay Box (Two Turn Unlock Relay) |
| SUNROOF 2 | 20A | Panorama Sunroof |
| POWER OUTLET | 20A | W/O Wireless Charging: Front Power Outlet & Cigarette Lighter With Wireless Charging: Cigarette Lighter |
| BRAKE SWITCH | 7.5A | Smart Key Control Module, Stop Lamp Switch |
| MEMORY 2 | 10A | Instrument Cluster, A/C Control Module, Electro Chromic Mirror |
| P/SEAT (PASS) | 30A | Passenger Seat Manual Switch |
| S/HEATER FRT | 20A | Front Air Ventilation Seat Control Module, Front Seat Warmer Control Module |
| MODULE 2 | 20A | PCB Block (Fuse – ABS3, ECU6, TCU2) |
| SUNROOF 1 | 20A | Panorama Sunroof |
| A/CON 2 | 7.5A | A/C Control Module |
| HEATED MIRROR | 10A | Driver/Passenger Power Outside Mirror, A/C Control Module, ECM (G4FJ) |
| P/SEAT (DRV) | 30A | Driver Seat Manual Switch |
| SAFETY P/WINDOW DRV | 25A | Driver Safety Power Window Module |
| P/WINDOW RH | 25A | Power Window Main Switch, Passenger Power Window Switch |
| P/WINDOW LH | 25A | Power Window Main Switch |
| AMP | 25A | AMP |
2021 Hyundai Tucson Under Hood Fuse Box Layout
2021 Hyundai Tucson Under Hood Fuse Box Diagram
2021 Hyundai Tucson under Hood Fuse Box and Relay Details
Assignment of the fuses and relays in the Engine compartment
| Name | Amp rating | Circuit Protected |
| MDPS | 80A | MDPS Unit |
| B+1 | 60A | Smart Junction Block (ARISU-LT IPS 1, IPS 2, IPS 3, IPS 4, Fuse – AMP) |
| B+2 | 60A | Smart Junction Block (ARISU-LT IPS 5, IPS 6, IPS 7, IPS 8, Fuse – SMART KEY1, SMART KEY2, BRAKE SWITCH, MODULE9) |
| B+3 | 50A | Smart Junction Block (Fuse – SUNROOF1, SUNROOF2, S/HEATER FRT, S/HEATER RR, SAFETY P/WINDOW DRV), Power Window Relay (Fuse – P/WINDOW LH, P/WINDOW RH) |
| ABS1 | 40A | ESC Module, Multipurpose Check Connector |
| ABS2 | 40A | ESC Module, Multipurpose Check Connector |
| IG1 | 40A | Ignition Switch (W/O Smart Key), PCB Block (PDM (IG1)/PDM (ACC) Relay – With Smart Key) |
| IG2 | 30A | Start Relay, Ignition Switch (W/O Smart Key), PCB Block (PDM (IG2) Relay – With Smart Key) |
| PTC HEATER 1 | 50A | PTC 1 Relay |
| PTC HEATER 2 | 50A | PTC 2 Relay |
| B+4 | 50A | Smart Junction Block (Fuse – MODULE8, 4WD, P/SEAT (DRV), P/SEAT (PASS), TAILGATE OPEN, DOOR LOCK, Leak Current Autocut Device – Fuse Switch, INTERIOR LAMP, MULTIMEDIA, MEMORY2) |
| COOLING FAN1 | 40A | G4NC/G4KJ: Cooling Fan High Relay |
| COOLING FAN1 | 50A | G4FJ: Cooling Fan High Relay |
| TCU3 | 40A | G4FJ – 7DCT: TCM |
| TCU4 | 40A | G4FJ – 7DCT: TCM |
| BLOWER | 40A | Blower Relay |
| POWER TAILGATE | 40A | Power Tail Gate Module |
| REAR HEATED | 40A | Rear Defogger Relay |
| WIPER FRT2 | 10A | BCW |
| E-CVVT2 | 20A | G4KJ: PCM |
| E-CVVT1 | 20A | G4KJ: PCM |
| WIPER FRT1 | 25A | Ignition Switch (W/O Smart Key), PDM (IG2) Relay (With Smart Key) |
| TCU1 | 15A | G4FJ: TCM (7DCT), G4KJ: PCM |
| A/C | 10A | E/R Junction Block (A/C Relay) |
| ECU3 | 20A | PCM (G4NC/G4KJ) / ECM (G4FJ) |
| HORN | 15A | Horn Relay |
| BATTERY MANAGEMENT | 10A | Not Used |
| SENSOR2 | 10A | G4NC: Oil Control Valve #1/#2, Camshaft Position Sensor #1/#2, Purge Control Solenoid Valve, Variable Intake Solenoid Valve, Canister Close Valve, E/R Junction Block (A/C Relay, Cooling Fan High Relay) G4FJ: Oil Control Valve #1/#2, Purge Control Solenoid Valve, Canister Close Valve, RCV Control Solenoid Valve, E/R Junction Block (A/C Relay, Cooling Fan High Relay) G4KJ: Canister Close Valve, Variable Intake Solenoid Valve, E/R Junction Block (A/C Relay, Cooling Fan High Relay) |
| SENSOR1 | 15A | Oxygen Sensor (Up)/(Down) |
| ECU2 | 20A | IGNITION COIL #1/#2/#3/#4, Condenser (G4NC) |
| ECU5 | 15A | PCM (G4NC) / ECM (G4FJ) |
| ECU4 | 15A | PCM (G4NC/G4KJ) / ECM (G4FJ) |
| SENSOR3 | 10A | G4NC: PCM G4FJ: ECM G4KJ: Purge Control Solenoid Valve, Oil Control Valve |
| MODULE3 | 10A | E/R Junction Block (Fuel Pump Relay) |
| DEICER | 15A | E/R Junction Block (Deicer Relay) |
| FUEL PUMP | 20A | E/R Junction Block (Fuel Pump Relay) |
| B/ALARM HORN | 15A | E/R Junction Block (B/Alarm Horn Relay) |
| ABS3 | 10A | ESC Module |
| MODULE2 | 10A | Not Used |
| POWER OUTLER FRT | 20A | Front Power Outlet & Cigarette Lighter (W/O Wireless Charging), Front Power Outlet (With Wireless Charging) |
| ECU6 | 10A | PCM (G4NC/G4KJ) / ECM (G4FJ) |
| TCU2 | 15A | Transaxle Range Switch, TCM (G4FJ – 7DCT) |
| B/UP LAMP | 10A | TCM (G4FJ), Transaxle Range Switch, Electro Chromic Mirror, Rear Combination Lamp (IN) LH/RH |
| POWER OUTLER REAR | 20A | Rear Power Outlet |
| ECU1 | 30A | Engine Control Relay |
WARNING: The terminal and harness assignments for individual connectors may vary depending on the vehicle’s equipment level, model, and market. It is recommended to refer to the fuse box diagram provided at the back of the fuse box cover for accurate information.
