2021 Jeep Wrangler Technical Service Bulletins

1,039 technical service bulletins (TSBs) are on record for the 2021 Jeep Wrangler. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11028245Jan 28, 2026Body and structure. SEAL - ROOF RAIL
• 11028244Jan 28, 2026Body and structure. SEAL - ROOF RAIL
• 11028252Jan 26, 2026Suspension. DO NOT REPLACE MULTIPLE SHOCKS UNLESS ALL ARE VERIFIED TO BE DEFECTIVE. Reference Master Tech article released in December 2025 for updated diagnostic and testing procedures. Master Tech link: https: //mastertech.playerlync.net/app/player/p2tQVm
• 11027837Jan 21, 2026Engine. Water Pump & Chain Case Cover
• 11027836Jan 21, 2026Engine. Water Pump & Chain Case Cover
• 11027647Jan 6, 2026Body and structure. Center stack – none
• 11026819Dec 19, 2025Body and structure, Air bags. Door - passenger air bag
• 11026818Dec 19, 2025Body and structure. Bezel - instrument panel
• 11026664Dec 11, 2025Electrical system. Check Engine/Malfunction Indicator Lamp 16C
• 11026652Dec 10, 2025Electrical system. Verify "Z" part number availability. Order a "Z" part number for all Exchange Orders: Warranty, Mopar, Customer pay and Service contract. Order"68" part number for New unsold units only
• 11026558Dec 5, 2025Steering, Suspension, Wheels. Shimmy Felt In Front End
• 11026568Dec 1, 2025Electrical system, Body and structure. Switch - power window
• 11025740Nov 19, 2025Other or unknown. ID-25-11 Rev. A Aluminum Filiform Corrosion Warranty Policy and Vehicle Digital Imaging (VDI) Pre-Approval Process - ALL Vehicles
• 11025739Nov 19, 2025Other or unknown. D-25-15 Rev. A Aluminum Filiform Corrosion Warranty Policy and Vehicle Digital Imaging (VDI) Pre-Approval Process - ALL Vehicles
• 11025727Nov 18, 2025Brakes. Pad kit - rear disc brake, front disc brake
• 11025724Nov 17, 2025Brakes. Pad kit - rear disc brake, front disc brake
• 11025508Nov 3, 2025Brakes. ESC Light Illuminated. DTC C1252-92 VACUUM PUMP CONTROL CIRCUIT And Or P258B ELECTRONIC VACUUM PUMP PERFORMANCE
• 11025028Oct 21, 2025Engine. Engine Oil Leak
• 11024604Oct 13, 2025Transmission and drivetrain. When servicing/replacing 68415437A$ Transmission, take care to not damage the PIM to P2 harness. Also, when reinstalling the harness, route the harness properly and secure it at all the retention points.
• 11024323Oct 9, 2025Steering. Module - steering control & column
• 11024035Oct 2, 2025Engine. Before replacing any parts please refer to SOL S2518000008 if it applies to the vehicle you are working on based on a VIN search in Service Library. Before replacing this part due to Engine Light On with P1CEA (Boost Side EVAP Purge System Performance), check for: 1) Improperly connected or kinked/pinched Purge Hoses at the Ejector Tees on the Air Box or Duct. 2) Improperly connected or kinked/pinched Purge Hose at…
• 11023618Sep 24, 2025Engine. Data collection required for all 2020-2026MY vehicles with 3.6L PSU engines during any of their first 3 engine oil changes. This data collection is applicable to all vehicle with engines with sales codes: ERG, ERC, EH3 and ERF. To assist with monitoring and quality improvement of the 3.6L engine, every time a vehicle comes for any of the first 3 oil changes, please use wiTECH to record the total engine idle time…
• 11023586Sep 23, 2025Electrical system. Flash: Amplifier (AMP) Diagnostic and System Updates *Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):** ● B143B-12 - ANC Microphone 1-Circuit Short To Battery. ● B143C-12 - ANC Microphone 2-Circuit Short To Battery. ● B143E-12 - ANC Microphone 3-Circuit Short To Battery. ● B143F-12 - ANC…
• 11023331Sep 19, 2025Electrical system. Customer complaint may include a Mil On/Check Engine Lamp On and Electronic Throttle Control (ETC) Lamp On. There may also be associated driveability issues. Upon further investigation, the following fault codes may be found in the PCM:
• 11023612Sep 18, 2025Brakes. Switch - clutch starter interlock & master cylinder assembly - clutch
• 11023326Sep 18, 2025Body and structure. Exterior Front Lamps Condensation Clearing Procedure *Some customers may report that on occasion vehicle exterior front lamps (headlamps, fog lamps, grille lamps, logo lamps or signature lamps) assemblies are fogged with a light layer of condensation on the inside of the lenses*
• 11023168Sep 12, 2025Suspension. Shock And Strut Diagnosis And Replacement Guidelines Leaking, noisy, or weak shocks or struts.
• 11022012Aug 14, 2025Body and structure. Aluminum Body Panel Corrosion Repair Aluminum corrosion or bubbling along the leading edge of hood, hinges or other exterior surface areas of the hinges, doors, fenders, swing gates or liftgates.
• 11022003Aug 13, 2025Body and structure. Aluminum Body Panel Corrosion Repair Aluminum corrosion or bubbling along the leading edge of hood, hinges or other exterior surface areas of the hinges, doors, fenders, swing gates or liftgates
• 11021555Jul 31, 2025Electrical system. Flash: Radio Frequency Hub Module (RFHM) Updates Customers must experience the following: ● Customers may be concerned about vehicle theft due to ability of key FOBs to be programmed through RFHM. Software enhancement includes: ● Update to the RFHM software to prevent unauthorized keyfob programming. ● This is intended to deter an unwanted drive off of the vehicle without the customer's knowledge. This bulletin…
• 11021043Jul 26, 2025Engine. Engine Rattle Noise
• 11021039Jul 23, 2025Electrical system. Tire Pressure Monitor (TPM) Service Information. TPM Lamp On.
• 11020832Jul 16, 2025Engine. Engine Cylinder Block Porosity Inspection - Engine Cold Start Rough Idle Customers may experience the following: ● Rough engine idle when cold starting the engine. ● Low coolant level in coolant recovery bottle.
• 11020858Jul 15, 2025Engine. Module - engine controller
• 11020855Jul 14, 2025Transmission and drivetrain. To inform dealers about the 850RE valve body PN: R8348504A connector: the original 16-pin connector included six pins that were not used in this application. To simplify the design, the connector has been optimized and updated to a 10-pin configuration.
• 11020767Jul 8, 2025Engine. Verify Reman part number availability. Order the "R" part number for all orders:
• 11020636Jul 4, 2025Transmission and drivetrain. 850RE D Clutch Repair Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must have at least 11,265 km (7,000 mi.) and exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0733-00 - Gear 3 Shift Incorrect Ratio. ● P1DA8-00 - Incorrect Gear Ratio Clutch A B or D Defective. ● P1D92-00 - Incorrect Gear Ratio - Clutch 4 Defective. Customers may also comment…
• 11020600Jul 4, 2025Electrical system. Decreased Remote Start And RKE Range. Tire Pressure Sensors Values Are Not Displayed
• 11020608Jul 3, 2025Engine. When replacing a camshaft and parts kit (P/N 68661146xx and/or 68661147xx), it is NOT necessary to order the roller-finger followers (rocker arms) separately, as these are included in the camshaft parts kit.
• 11020108Jun 24, 2025Fuel system. Frequent Repairs Of Fuel System Components Such As Fuel Filters Numerous Stellantis vehicles having fuel line components replaced such as diesel fuel filters. Occasionally, components are replaced before their standard life expectancy or when not contaminated with debris.
• 11020090Jun 24, 2025Body and structure. RAIL - REAR
• 11019773Jun 18, 2025Engine. ADJUSTER Valve Lash Customer's complaint may include a ticking noise coming from the engine. Technician's observations can refer to spongy or stuck hydraulic lash adjusters. Exhaust lash adjusters found with a "spongy" condition (compressible plunger) leading to the assumption of being defective/malfunctioning. EXHAUST lash adjusters are designed to be COMPRESSIBLE by hand.
• 11019618Jun 13, 2025Engine. "Spark Knock/Engine Symptoms Customers may experience the following: ● Knocking or pinging noise coming from the engine upon acceleration. This bulletin involves cleaning the piston heads and cylinder head combustion chambers to resolve a spark knock condition being caused by oil intrusion through the PCV system."
• 11019600Jun 11, 2025Other or unknown. Warranty Newsletter – Volume 11, Issue 6
• 11019598Jun 11, 2025Other or unknown. FCA Caribbean Warranty Newsletter – Volume 11, Issue 6
• 11019442Jun 6, 2025Body and structure. "Shim - felt GIM # NUSENGCHR24018991: JL JT sun visor center support BSR. Add felt shim 68736674AA - 43MM OD x 10mm ID x 1mm thick. "
• 11019433Jun 6, 2025Fuel system. "Frequent Repairs Of Fuel System Components Such As Fuel Filters Numerous Stellantis vehicles having fuel line components replaced such as fuel filter. Occasionally, components are replaced before their standard life expectancy or when not contaminated with debris "
• 11018863May 29, 2025Fuel system. "Frequent Repairs Of Fuel Line Components Such As Fuel Filters Numerous Stellantis vehicles having fuel line components replaced such as fuel filter. Occasionally, components are replaced before their standard life expectancy or when not contaminated with debri "
• 11018609May 28, 2025Electrical system. Power Top Switch Unresponsive, Full Retractable Sky Roof Does Not Open or Close Customer Complaint/Technician Observation: The owner complains the top system is inoperative and that by pressing the switches the Power Top does not make any movement. Technician may or may not have Diagnostic Trouble Codes (DTCs). Repair Procedure: Perform the power top calibration prior to any switch or parts replacement.
• 11018810May 27, 2025Electrical system. Bezel & indicator- gear shift indicator

← All problems reported for the 2021 Jeep Wrangler