2021 Jeep Wrangler 4XE Technical Service Bulletins

151 technical service bulletins (TSBs) are on record for the 2021 Jeep Wrangler 4XE. 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.

• 11029690Feb 19, 2026Body and structure. D-25-15 Rev. B Aluminum Filiform Corrosion Warranty Policy and Vehicle Digital Imaging (VDI) Pre-Approval Process - ALL Vehicles
• 11029695Feb 18, 2026Electrical system. ID-26-06 (XU1) High Voltage Battery Pack - Select 2021 - 2025 Jeep Wrangler (JL) and 2022 - 2026 Jeep Grand Cherokee/ Grand Cherokee (WL)
• 11029694Feb 18, 2026Electrical system. D-26-06 (XU1) High Voltage Battery Pack - Select 2021 - 2025 Jeep Wrangler (JL) and 2022 - 2026 Jeep Grand Cherokee/ Grand Cherokee (WL)
• 11029693Feb 18, 2026Body and structure. FCA Caribbean Warranty Newsletter – Volume 12, Issue 2
• 11029692Feb 18, 2026Body and structure. Warranty Newsletter – Volume 12, Issue 2
• 11029667Feb 18, 2026Electrical system. High Voltage Battery Pack Replacement XU1 Warranty Extension Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0BBE-00 - Hybrid Battery Pack Voltage Variation. ● P1C5E-00 - Battery State Of Health Failed. ● P0B24-00 - Hybrid/EV Battery…
• 11029684Feb 17, 2026Body and structure. Door Hem Aluminum Body Panel Corrosion Repair Customers may experience the following: SYMPTOM: ● Filifom corrosion at the hem area of the door. This bulletin involves removing corrosion and refinishing the hem area on the vehicle door.
• 11028904Feb 14, 2026Electrical system. Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State of Charge (SOC) Inaccurate, Battery Charging Message, Presence of IBS Related Diagnostic Trouble Codes (DTCs), or Battery Warning Lamp On
• 11028900Feb 14, 2026Electrical system, Body and structure. Power Top Switch Unresponsive, Full Retractable Sky Roof Does Not Open or Close
• 11028890Feb 14, 2026Electrical system. EMISSION RECALL – NORTH AMERICA Check Engine/Malfunction Indicator Lamp Reference: 16C
• 11028894Feb 13, 2026Electrical system. Washer Fluid Warning Lamp Illuminated When Reservoir Is Full
• 11028892Feb 12, 2026Electrical system. Check Engine Light On And Service Hybrid System Displayed. P0A0A-00 High Voltage System Interlock Circuit “A” Is Active
• 11028885Feb 12, 2026Suspension. DO NOT REPLACE MULTIPLE SHOCKS UNLESS ALL ARE VERIFIED TO BE DEFECTIVE. Reference Master Tech article released in January 2026 for updated diagnostic and testing procedures. Master Tech link: https: //mastertech.playerlync.net/app/player/p2tQVm
• 11028230Jan 31, 2026Electrical system. Flash: Battery Pack Control Module (BPCM) 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):** ● **P0B28-00 - Hybrid/EV Battery “B” Voltage Unstable. ● P0BBE-00 - Hybrid/EV Battery Pack Voltage Variation. ● P0AA1 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0C78 - Hybrid/EV…
• 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
• 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
• 11026687Dec 13, 2025Electrical system, Engine. Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician must find one or more of the following Diagnostic Trouble Codes (DTC)s have been set: ● P2450 - Fuel Tank Isolation Valve Stuck Open. ● P1D83 - Implausible Engine Oil Temperature Signal Received.
• 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
• 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…
• 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:
• 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.
• 11022010Aug 16, 2025Transmission and drivetrain. Transmission Auxiliary Oil Pump Failure Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P0B0D-00 - Electric/Auxiliary Transmission Fluid Pump Motor Control Module. Customers may also comment on the following: ● Vehicle is in limp mode This bulletin involves replacing the transmission oil pump.
• 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…
• 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:
• 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.
• 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. "
• 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.

← All problems reported for the 2021 Jeep Wrangler 4XE