Table of Contents
2021 Jeep Wrangler Fuses and Fuse Box | Diagram and Repairs
The fuses and fuse box of the 2021 Jeep Wrangler are important parts of the car’s electrical system; they protect a number of vital circuits. The fuse box, which is usually found in easily accessible places like the engine bay or cabin, contains a number of fuses that are intended to break an electrical circuit when they come into contact with too much electricity. This prevents damage to important systems like lighting, power windows, and electronics. Fuse box maintenance and inspection are essential to the seamless functioning of the 2021 Jeep Wrangler’s electrical systems, making it a vital component in maintaining the car’s dependability and performance on and off the trails it’s famed for exploring. In order to avoid electrical problems and guarantee a trustworthy driving experience, proper fuse management is essential.
2024 JEEP Wrangler Specs, Price, Features, Mileage and Torque
FUSES
General Information
WARNING!
- When replacing a blown fuse, always use an appropriate replacement fuse with the same amp rating as the original fuse. Never replace a fuse with another fuse of higher amp rating. Never replace a blown fuse with metal wires or any other material. Failure to use proper fuses may result in serious personal injury, fire and/or property damage.
- Before replacing a fuse, make sure that the ignition is off and that all the other services are switched off and/or disengaged.
- If the replaced fuse blows again, contact an authorized dealer.
- If a general protection fuse for safety systems (air bag system, braking system), power unit systems (engine system, gearbox system) or steering system blows, contact an authorized dealer.
The fuses protect electrical systems against excessive current. When a device does not work, you must check the fuse element inside the blade fuse for a break/melt. Also, please be aware that using power outlets for extended period of time with the engine off, may result in vehicle battery discharge.
- Fuse Element
- Blade Fuse with a good/functional fuse element
- Blade fuse with a bad/not functional fuse element (blown fuse)
Power Distribution Center (PDC)
The Power Distribution Center is located in the engine compartment near the battery. This center contains cartridge fuses, mini fuses, and relays. The PDC top cover is labelled with each serviceable fuse/relay location, function, and size.
| Cavity | Cartridge Fuse | Micro Fuse | Description |
| * If Equipped | |||
| F01 | – | – | Spare |
| F02 | 40 Amp Green | – | Starter |
| F03 | – | 5 Amp Tan | Intelligent Battery Sensor (IBS) |
| F04 | – | 20 Amp Yellow | Fuel Pump MTR/FPCM |
| F05 | – | 5 Amp Tan | Security Gateway |
| F06 | – | – | Spare |
| F07 | – | 15 Amp Blue | Low Temp Radiator Cooling Pump (LTR) * |
| F08 | – | 15 Amp Blue | Trans Control Module TCM-8HP CYGNUS |
| F09 | – | – | Spare |
| F10 | – | 15 Amp Blue | Key Ignition Node (KIN)/Radio Frequency Hub (RF HUB)/Electric Steering Column Lock (ESCL) |
| F11 | – | 10 Amp Red | UCI Port (USB & AUX) |
| F12 | – | 25 Amp Clear | HIFI Amplifier |
| Cavity | Cartridge Fuse | Micro Fuse | Description |
| * If Equipped | |||
| F13 | – | – | Spare |
| F14 | – | – | Spare |
| F15 | – | 15 Amp Blue | Instrument Panel Cluster (IPC)/Switch Bank-Heavy Duty Electrical Pkg (SWITCH BANK-HD ELEC) |
| F16 | – | – | Spare |
| F17 | – | – | Spare |
| F18 | – | 10 Amp Red | Air Conditioning Clutch (AC CLUTCH) |
| F19 | – | – | Spare |
| F20 | 30 Amp Pink | – | Central Body Controller (CBC) 1-INTERIOR LIGHTS |
| F21 | – | 20 Amp Yellow | REAR WIPER |
| F22 | – | 10 Amp Red | Engine Control Module (ECM)/Powertrain Control Module (PCM)/Motor Generator Unit (MGU) WAKE UP/Power Pack Unit (PPU) WAKE UP |
| F23 | – | 10 Amp Red | Powertrain Control Module (PCM)/Engine Control Module (ECM) |
| F24 | – | – | Spare |
| F25 | – | 10 Amp Red | Module Shift By Wire (MOD_SBW) |
| F26 | 40 Amp Green | – | Central Body Controller (CBC) 2-EXTERIOR LIGHTS #1 |
| F27 | 30 Amp Pink | – | Front Wipers |
| F28 | 40 Amp Green | – | Central Body Controller (CBC) 3-POWER LOCKS |
| F29 | 40 Amp Green | – | Central Body Controller (CBC) 4-EXTERIOR LIGHTS #2 |
| F30 | – | – | Spare |
| F31 | – | 10 Amp Red | DIAGNOSTIC PORT |
| F32 | – | 10 Amp Red | Heating Ventilation Air Conditioning Mod (HVAC CTRL MOD)/Steering Column Lock (SCL)/ Occupant Classification Module (OCM)/Driver Presence Detection Module (DPDM) |
| Cavity | Cartridge Fuse | Micro Fuse | Description |
| * If Equipped | |||
| F33 | – | 10 Amp Red | ParkTronics System (PTS)/Infrared Camera Module (IRCM)/Airbag Disable Lamps (AIRBAG DISABLE LMPS) |
| F34 | – | 10 Amp Red | Electronic Stability Control (ESC)/Electric Hydraulic Power Steering (EHPS)/Smart Bar Control Module (SBCM) WAKE UP |
| F35 | 30 Amp Pink | – | BRAKE VAC PMP * |
| F36 | 30 Amp Pink | – | Trailer Tow Electric Brake Mod * |
| F37 | 30 Amp Pink | – | TRAILER TOW CONN 7W * |
| F38 | 20 Amp Blue | – | Engine Control Module (ECM) |
| F39 | – | 15 Amp Blue | MGU Coolant Pump (3.6) * |
| F40 | – | 15 Amp Blue | DriveTrain Control Module (DTCM)/Axle Lock (AXLE LOC) FT_RR |
| F41 | – | 15 Amp Blue | Instrument Cluster (IC)/Security GateWay (SGW) WAKE UP |
| F42 | – | 10 Amp Red | Power Control Control Feed (Electric Stop/Start) * |
| F43 | – | 20 Amp Yellow | PWR OUTLET (CARGO) BATT |
| F44 | – | 10 Amp Red | InfraRed Camera (IRCAM) HEATERS |
| F45 | – | 20 Amp Yellow | PWR OUTLET (CARGO) IGN * |
| F46 | – | 10 Amp Red | AUTO HDLP LVL MOD/LVL MTR/HDLP SW |
| F47 | – | – | Spare |
| F48 | – | – | Spare |
| F49 | – | 10 Amp Red | Occupant Restraint Controller (ORC) |
| F50 | – | 10 Amp Red | HD ACC * |
| F51 | – | 10 Amp Red | Digital TV (DSRC)/USB/InSide RearView Mirror (ISRVM)/ Compass Module (CSGM) |
| F52 | – | 20 Amp Yellow | CIGAR LTR |
| F53 | – | – | Spare |
| Cavity | Cartridge Fuse | Micro Fuse | Description |
| * If Equipped | |||
| F54 | – | – | Spare |
| F55 | – | 10 Amp Red | Central Vision Processing Module (CVPM) |
| F56 | – | 10 Amp Red | IN-CAR TEMP SENSOR |
| F57 | – | 20 Amp Yellow | Front Driver Heated Seat |
| F58 | – | 20 Amp Yellow | Front Pass Heated Seat |
| F59 | – | – | Spare |
| F60 | – | 15 Amp Blue | Comfort Steering Wheel Module (CSWM) (HTD STR WHEEL) |
| F61 | – | 10 Amp Red | Left Blind Spot Sensor (LBSS)/Right Blind Spot Sensor (RBSS) |
| F62 | – | – | Exhaust Sol * |
| F63 | – | 10 Amp Red | Occupant Restraint Controller (ORC) |
| F64 | – | – | Spare |
| F65 | – | – | Spare |
| F66 | 40 Amp Green | – | HVAC BLOWER MTR Front |
| F67 | – | – | Spare |
| F68 | – | – | Spare |
| F69 | – | 5 Amp Tan | Motor Generator Unit MGU Belt Starter Generator (BSG) * |
| F70 | – | 25 Amp Clear | INJ/IGN COIL (GAS)/GLO PLUG MOD (DSL) |
| F71 | – | – | Spare |
| F72 | – | 10 Amp Red | HD ELEC ACC PKG * |
| F73 | 20 Amp Blue | – | PWR TOP LT |
| F74 | 20 Amp Blue | – | PWR TOP RT |
| Cavity | Cartridge Fuse | Micro Fuse | Description |
| * If Equipped | |||
| F75 | – | 10 Amp Red | Power Pack Unit – Battery Pack Control Module & Auxiliary Power Module (PPU-BPCM & APM) Belt Starter Generator (BSG) * |
| F76 | – | 20 Amp Yellow | ECM (GAS)/PCM (DSL) |
| F77 | – | 10 Amp Red | HEATED MIRRORS |
| F78 | – | 10 Amp Red | INTRUSION/SIREN/INTRUSION SENSORS |
| F79 | – | 20 Amp Yellow | SMART BAR CTRL MOD |
| F80 | – | 15 Amp Blue | Powertrain Control Module (PCM) / Sol 1-2 Block Shift |
| F81 | 30 Amp Pink | – | REAR DEFROSTER (EBL) |
| F82 | 30 Amp Pink | – | FUEL HTR * |
| F83 | 60 Amp Yellow | – | GLOW PLUG * |
| F84 | 30 Amp Pink | – | UREA HTR CTRL UNIT * |
| F85 | – | 10 Amp Red | PM SENSOR * |
| F86 | 30 Amp Pink | – | BRAKE VAC PMP 2 * |
| F87 | – | 10 Amp Red | SUPPLY/PURGING PMP * |
| F88 | 20 Amp Blue | – | NOx SENSOR #1/ #2 * |
| F89 | – | 10 Amp Red | Steering Column Control Module (SCCM)/ Cruise Control (CRUISE CTL)/Digital TV (DTV)/ Air Bag Disable Lamp |
| F90 | 20 Amp Blue | – | TRAILER TOW PARK LMP* |
| F91 | – | 20 Amp Yellow | HORN |
| F92 | 40 Amp Green | – | HD ACCY #2 * |
| F93 | 40 Amp Green | – | HD ACCY #1 * |
| F94 | – | 10 Amp Red | Tire Pressure Monitor (TPM)/RF Hub system (CORAX) |
| F95 | – | – | Spare |
| Cavity | Cartridge Fuse | Micro Fuse | Description |
| * If Equipped | |||
| F96 | – | 10 Amp Red | PWR MIRROR SW |
| F97 | – | 20 Amp Yellow | RADIO/TBM |
| F98 | – | 10 Amp Red | SW BANK-HD ELEC/OFF-ROAD |
| F99 | – | – | Spare |
| F100 | 30 Amp Pink | – | ESC-ECU & VALVES |
| F101 | 30 Amp Pink | – | DriveTrain Control Module (DTCM) |
| F102 | – | 15 Amp Blue | DUAL USB PORT |
| F103 | – | 15 Amp Blue | HD ACCY #3 * |
| F104 | – | 15 Amp Blue | PPU COOL PUMP * |
| F105 | – | 10 Amp Red | Integrated Center Stack (ICS)/Heat Ventilation Air Conditioning (HVAC) |
| F106 | 50 Amp Red | – | Electronic Speed Control (ESC)-PUMP MTR |
| F107 | – | 20 Amp Yellow | TRAILER TOW STOP/TURN LT * |
| F108 | – | 15 Amp Blue | HD ACCY #4 * |
| F109 | – | 20 Amp Yellow | TRAILER TOW STOP/TURN RT |
| F110 | 30 Amp Pink | – | POWER INVERTER |
| F111 | 20 Amp Blue | – | TRAILER TOW BACKUP * |
Customers can select to switch the Cargo Power Outlet from F43 battery fed power to F45 which is fed when the ignition is ON.
2024 JEEP Wrangler Specs, Price, Features, Mileage and Torque
CAUTION!
- When installing the power distribution center cover, it is important to ensure the cover is properly positioned and fully latched. Failure to do so may allow water to get into the power distribution center and possibly result in an electrical system failure.
- When replacing a blown fuse, it is important to use only a fuse having the correct amperage rating. The use of a fuse with a rating other than indicated may result in a dangerous electrical system overload. If a properly rated fuse continues to blow, it indicates a problem in the circuit that must be corrected.
FAQs
What is the purpose of the fuse box in the 2021 Jeep Wrangler?
The fuse box in the 2021 Jeep Wrangler serves as a protective mechanism for various electrical systems and components in the vehicle.
Where is the fuse box located in the 2021 Wrangler?
The fuse box’s location can vary, but it’s typically found in the engine bay or the interior cabin for easy access.
How do fuses work in the 2021 Jeep Wrangler?
Fuses are designed to interrupt the electrical circuit when exposed to excessive current, preventing damage to connected components.
What electrical components are safeguarded by fuses in the 2021 Wrangler?
Fuses protect a wide range of components, including lights, power windows, infotainment systems, and more.
How can I identify a blown fuse in my 2021 Jeep Wrangler?
A blown fuse is typically identified by a visibly broken filament or a discolored appearance.
Is it easy to replace a blown fuse in the 2021 Wrangler?
Yes, replacing a blown fuse is a straightforward process, and many vehicle owners can do it themselves by following the instructions provided in the manual.
Should I use the correct amperage fuse when replacing one in the 2021 Wrangler?
It’s crucial to use the correct amperage fuse to ensure the proper protection of the circuit without overloading or underloading it.
Are spare fuses included in the 2021 Jeep Wrangler, or should I buy them separately?
While some vehicles may come with spare fuses, it’s recommended to purchase extra fuses separately and keep them in your vehicle.
What are common causes of blown fuses in the 2021 Wrangler?
Blown fuses can result from electrical faults, short circuits, or overloading due to faulty components.
How often should I check the fuses in my 2021 Jeep Wrangler?
It’s advisable to inspect your fuses periodically or when you encounter specific electrical issues in your vehicle.
Can I prevent blown fuses in my 2021 Wrangler?
Regular vehicle maintenance and addressing electrical issues promptly can help prevent blown fuses.
Are there any special precautions when dealing with the fuse box in the 2021 Wrangler?
Always disconnect the vehicle’s battery before working with the fuse box to ensure safety.
Are there any aftermarket upgrades available for the fuse box or fuses in the 2021 Wrangler?
Depending on your preferences, there may be aftermarket options for enhancing the fuse box’s functionality or aesthetics.
Can a blown fuse affect the performance of the 2021 Jeep Wrangler beyond electrical issues?
While blown fuses primarily affect electrical components, they can indirectly impact other vehicle systems, so timely replacement is recommended.
Does the 2021 Jeep Wrangler feature any unique advancements or changes in its fuse box design compared to previous models?
The 2021 Wrangler’s fuse box design generally follows the same principles of protecting the vehicle’s electrical systems, but it may include updates or improvements to cater to the vehicle’s evolving technology and capabilities.
Useful Link
View Full PDF: 2021 Jeep Wrangler Owner’s Manual
2024 JEEP Wrangler Specs, Price, Features, Mileage and Torque
Drive Smart: 2021 Jeep Wrangler | Display Cluster Instructions
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