2021 Jeep Wrangler Jl
Vehicle Specs & Maintenance Data
The 2021 Jeep Wrangler Jl maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your Jeep Wrangler Jl.
For oil changes, the 2021 Jeep Wrangler Jl takes 5W-20 Synthetic Blend motor oil with a capacity of 4.5 quarts. Brake fluid type is DOT 3, the recommended coolant is Mopar OAT (Purple/Violet), and transmission fluid is ATF+4. Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.
When mounting wheels on the Jeep Wrangler Jl, torque the lug nuts to 130 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.
Owners of the 2021 Jeep Wrangler Jl have reported 5 common issues including "Death Wobble", "Electrical System and ESS Battery Issues" and "Water Leaks into Cabin". Scroll down to the Diagnostics tab for detailed descriptions, solutions, and estimated repair costs.
There are 14 NHTSA safety recalls on file for the 2021 Jeep Wrangler Jl. Check the Recalls tab below for full details.
Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.
The 2021 Jeep Wrangler Jl uses 5W-20 Synthetic Blend motor oil (4.5 qt capacity), requires lug nuts torqued to 130 ft-lbs, takes DOT 3 brake fluid.
Enter a diagnostic trouble code to see causes, symptoms, and fixes for the 2021 Jeep Wrangler Jl.
Common problems reported by 2021 Jeep Wrangler Jl owners, with recommended fixes and estimated repair costs.
Death Wobble
A violent steering wheel oscillation occurs at highway speeds (usually 45-65 mph), typically triggered by hitting a bump or pothole. The entire front end shakes uncontrollably, making the vehicle difficult to control. This is a well-known long-standing Wrangler issue.
Replace the steering stabilizer (damper) as a first step. Check the track bar, ball joints, tie rod ends, and wheel bearings for wear. Upgraded aftermarket steering stabilizers provide better damping. The track bar bracket bolt should be checked for proper torque.
Est. Cost: $100 - $300 for stabilizer; $500 - $1,500 for full front end workElectrical System and ESS Battery Issues
The Engine Stop-Start (ESS) system relies on an auxiliary battery that frequently fails, causing error messages and the ESS system to stop functioning. Improperly seated fuses and charging system faults are also common, leading to intermittent electrical failures.
Replace the auxiliary ESS battery (located under the passenger seat). Check all fuse connections in the fuse box for proper seating. If the main battery is also weak, replace both batteries. Some owners install a higher-capacity main battery to compensate.
Est. Cost: $100 - $250 for ESS battery; $200 - $400 for main batteryWater Leaks into Cabin
Water enters the cabin during rain or car washes, especially around the doors, freedom panel seals, and windshield. Pooling water on the floor can damage electronic modules and cause a musty odor. The removable top panels create more potential leak points.
Inspect and replace worn door seals and freedom panel weather stripping. Ensure the drain plugs in the floor are clear and functioning. Apply silicone sealant to known leak points around the windshield frame. The hard top rear seal is a frequent culprit.
Est. Cost: $50 - $300 for seals; $100 - $500 for professional resealingClutch Pressure Plate Overheating (Manual)
Manual transmission models can experience clutch pressure plate overheating, which may lead to fracture or in extreme cases an engine fire. Symptoms include a burning smell, difficulty shifting, and clutch slippage during hard use or towing.
Jeep issued recall W14/NHTSA 21V-510 for certain Wranglers with manual transmissions. Contact your dealer to check if your VIN is affected. Avoid sustained clutch slipping on hills and reduce towing loads if you have a manual transmission.
Est. Cost: Covered under recall; $1,500 - $2,500 if out of recall scopeGalvanic Corrosion at Door Hinges
A metal-on-metal reaction between dissimilar metals causes galvanic corrosion at the door hinges, hood hinges, and tailgate. The corrosion appears as white or brown buildup and can cause the hinges to seize, making doors difficult to open or close.
Jeep redesigned the door hinges to address this. Apply dielectric grease to the hinge pins to slow corrosion. If hinges are seized, they can be replaced with the updated part number. The corrosion is cosmetic initially but worsens over time.
Est. Cost: $50 - $150 per hinge; DIY: $10 - $30 for grease14 NHTSA safety recalls for the 2021 Jeep Wrangler Jl. Check your VIN at NHTSA.gov
ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
Park OutsideChrysler (FCA US, LLC) is recalling certain 2020-2025 Jeep Wrangler 4Xe and 2022-2026 Grand Cherokee 4Xe vehicles. The high voltage battery may fail internally and lead to a vehicle fire while parked or driving.
A vehicle fire can increase the risk of injury.
Owners are advised to park outside and away from structures and not to charge their vehicles until the remedy is completed. Dealers will update the high voltage battery software, and replace the high voltage battery, as necessary, free of charge. Owner notification letters were mailed beginning December 17, 2025. Owners may contact Chrysler customer service at 800-853-1403. Chrysler's number for this recall is 68C. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning November 6, 2025. Vehicles that were previously recalled for the same issue under NHTSA Recalls 24V720 and 23V787 will need to have the new remedy performed.
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Chrysler (FCA US, LLC) is recalling certain 2018-2024 Jeep Wrangler vehicles. The wiring harness for the rearview camera and the center brake light may short circuit, which can disable the rearview camera image and center brake light. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 111, "Rear Visibility" and 108, "Lamps, Reflective Devices, and Associated Equipment."
A rearview camera image that does not display decreases the driver's visibility, increasing the risk of a crash. Additionally, a center brake light that fails to illuminate can fail to indicate to other drivers that the vehicle is slowing down, increasing the risk of a crash.
Dealers replaced the harness for the center brake light and rearview camera and/or the spare tire carrier/harness assembly, as necessary, free of charge. All vehicles were repaired by January 15, 2024. Owner notification letters were mailed September 26, 2024. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 77B.
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
Chrysler (FCA US, LLC) is recalling certain 2020-2024 Jeep Gladiator and 2018-2024 Jeep Wrangler vehicles. The instrument panel cluster may experience an internal short circuit and fail. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 101, "Controls and Displays."
An instrument panel that fails to display critical safety information, such as the speedometer or warning lights, can increase the risk of a crash.
Dealers will replace the instrument panel cluster, free of charge. Owner notification letters were mailed between October 3, 2024, and January 23, 2025. Owners may contact FCA customer service at 1-800-853-1403. FCA's number for this recall is 30B.
POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE:SOFTWARE
Chrysler (FCA US, LLC) is recalling certain 2021 Jeep Wrangler and Jeep Gladiator vehicles that were previously remedied under NHTSA recall number 23V-116. The software for the powertrain control module may cause an engine stall, which can result in a loss of drive power.
A loss of drive power increases the risk of a crash.
Dealers will update the powertrain control module software, free of charge. Owner notification letters were mailed August 15, 2024. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US LLC's number for this recall is 92B. Vehicles previously repaired under recall 23V-116 will need to have the new remedy completed.
VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
Chrysler (FCA US, LLC) is recalling certain 2021-2024 Jeep Wrangler and 2022-2024 Jeep Grand Cherokee vehicles. A hybrid control processor (HCP) software error may cause the defrosting and defogging system to be inoperative. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 103, "Windshield Defrosting and Defogging Systems."
An inoperative windshield defrosting and defogging system may decrease the driver's visibility, increasing the risk of a crash.
Dealers will update the HCP software, free of charge. Owner notification letters were mailed February 29, 2024. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is 04B.
ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
Park OutsideChrysler (FCA US, LLC) is recalling certain 2021-2023 Jeep Wrangler Plug-In Hybrid Electric (PHEV) vehicles. The high voltage battery may fail internally and lead to a vehicle fire while parked or driving.
A vehicle fire while parked or driving can increase the risk of injury.
Owners are advised not to recharge their vehicles, and to park outside and away from structures, until they are repaired. Dealers will update the high voltage battery pack software and replace the battery pack assembly if necessary, free of charge. Owner notification letters were mailed March 7, 2024. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 89A. This recall is superseded by NHTSA Recall 24V-720.
FUEL SYSTEM, DIESEL:DELIVERY:FUEL PUMP
Chrysler (FCA US, LLC) is recalling certain 2021-2023 Jeep Wrangler, Gladiator, and 2022-2023 Ram 1500 vehicles equipped with a 3.0L diesel engine. The high pressure fuel pump (HPFP) may fail.
Fuel pump failure can result in an engine stall, increasing the risk of a crash.
Dealers will replace the HPFP and replace additional fuel system components, as necessary, free of charge. Owner notification letters were mailed October 17, 2023. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 01A.
STRUCTURE:FRAME AND MEMBERS
Chrysler (FCA US, LLC) is recalling certain 2020-2022 Jeep Wrangler vehicles. A stud on the frame assembly may puncture the fuel tank in a crash, which can result in a fuel leak.
A fuel leak in the presence of an ignition source increases the risk of a fire.
Dealers will inspect and, if necessary, remove the frame stud and apply paint, free of charge. Owner notification letters were mailed April 6, 2023. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 28A.
POWER TRAIN:CLUTCH ASSEMBLY
Chrysler (FCA US, LLC) is recalling certain 2018-2023 Jeep Wrangler, and 2020-2023 Jeep Gladiator vehicles equipped with manual transmissions. The clutch pressure plate may overheat and fracture.
Overheated clutch components may increase the risk of a fire. Additionally, damage to other nearby components can result in debris falling onto the road or a loss of drive, increasing the risk of a crash.
Dealers will replace the clutch assembly and update the software, free of charge. Owner notification letters were mailed from November 16, 2023 through July 25, 2024. Owners may contact (FCA US, LLC) customer service at 1-800-853-1403. FCA US LLC's number for this recall is 19A. This recall expands and replaces previous recall 21V-028. Vehicles previously repaired under recall 21V-028 will need to have the new remedy completed.
ENGINE
Chrysler (FCA US, LLC) is recalling certain 2021-2023 Jeep Wrangler 4xe vehicles equipped with 2.0L Plug-In Hybrid Electric Vehicle engines. A loss of communication may cause an engine shutdown.
An engine shutdown can cause a loss of drive power, increasing the risk of a crash.
There is more than one involved component and calibration software. Updating the calibration software in the Transmission Control Module, Hybrid Control Processor and Auxiliary Hybrid Control Processor that changes fail safe from shut down to limp home. Dealers will update the transmission control module software, Hybrid Control Processor and Auxiliary Hybrid Control Processor, free of charge. Owner notification letters were mailed December 22, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall ZB7.
SEAT BELTS:PRETENSIONER
Chrysler (FCA US, LLC) is recalling certain 2022 Ram 1500, Jeep Gladiator, and 2021 Jeep Wrangler vehicles. The front seat belt retractors may have an improperly welded micro gas generator, which can result in seat belt pretensioner failure.
A seat belt with pretensioner failure may not properly restrain an occupant during a crash, increasing the risk of injury.
Dealers will replace the front seat belt retractors. free of charge. Owner notification letters were mailed December 8, 2022. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is Z95.
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Chrysler (FCA US, LLC) is recalling certain 2020-2022 Jeep Wrangler, Ram 1500, and 2021-2022 Jeep Gladiator vehicles equipped with 3.0L diesel engines. The high pressure fuel pump (HPFP) may fail, causing an engine stall.
An engine stall can increase the risk of a crash.
Dealers will replace the HPFP and inspect and replace additional fuel system components, as necessary, free of charge. Owner notification letters were mailed October 17, 2023. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is Z96.
BACK OVER PREVENTION:DISPLAY FUNCTION
Chrysler (FCA US, LLC) is recalling certain 2020-2021 Jeep Wrangler, RAM 1500 and 2021 Jeep Gladiator vehicles. A radio software error may prevent the rearview image from displaying. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
A rearview camera that does not display an image reduces the driver's rear view, increasing the risk of a crash.
Dealers will update the radio software, free of charge. Owner notification letters were mailed October 6, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA, LLC's number for this recall is Z86.
POWER TRAIN:CLUTCH ASSEMBLY
Chrysler (FCA US, LLC) is recalling certain 2018-2021 Jeep Wrangler and 2020-2021 Jeep Gladiator vehicles equipped with manual transmissions. The clutch pressure plate may overheat and fracture.
Overheated clutch components may increase the risk of a fire. Additionally, damage to other nearby components can result in debris falling onto the road or a loss of drive, increasing the risk of a crash.
FCA US LLC will notify owners, and dealers will add software to reduce engine torque capability when clutch assembly temperatures rise to a level that may damage the inner pressure plate, free of charge." FCA has ordered a stop sale for the affected vehicles as of February 25, 2021. Owner notification letters were mailed on March 4, 2021.
