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.

• 10243172Aug 18, 2023Other or unknown, Electrical system. Low Charging Voltage Displayed On Cluster
• 10243242Aug 8, 2023Transmission and drivetrain. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? **U115F-00 - Lost Communication With Driver Presence Detection Module.** ? P02EE - Cylinder 1 Injector Circuit Performance. ? P02EF - Cylinder 2 Injector…
• 10243241Aug 8, 2023Visibility (wipers, defrost, mirrors), Electrical system. Rear Defroster Inoperative Customer may experience the following: ? Rear window is not defrosting ? The rear window glass left or right side defrost solder terminal is detached from the defrost grid. This bulletin involves replacing the Electric Backlite (EBL) wire connector repair and re-securing the electrical connector(s) to the rear window.
• 10243153Aug 8, 2023Other or unknown. Apple CarPlay Does Not Work Or Not Connecting
• 10242779Jul 27, 2023Equipment. Customer Satisfaction Notification ZD7 - Radio Software update
• 10242717Jul 27, 2023Equipment. Lubrication and Maintenance Fluids If MOPAR fluids and chemicals are not readily available, please review Service Library for specifications so a suitable alternative can be used
• 10242828Jul 26, 2023Equipment, Electrical system. Radio Over The Air Updating to QR40.12 Software Version ? Mobile Wi-Fi inoperative upon start up. ? Hotspot gives "No Internet" connection message on phone, when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air (FOTA) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software…
• 10242816Jul 20, 2023Engine cooling, Electrical system. Power Inverter Module (PIM) Replacement Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTCs have been set: ? P0A78-00 - Drive Motor A Inverter Performance. ?P0A79-00 - Drive Motor B Inverter Performance. Customer may also experience the following: ? Internal Combustion Engine (ICE) propulsion only and no EV or hybrid mode…
• 10242712Jul 18, 2023Steering, Electrical system. ELECTRIC HYDRAULIC POWER STEERING PUMP Prior to replacing this component for damage at the pump electrical connection, please contact FCA redacted content. If no response in 15 minutes, proceed with repair.
• 10242706Jul 17, 2023Brakes, Electrical system. PUMP, Vacuum For DTC Code P258B - ELECTRONIC VACUUM PUMP PERFORMANCE. Due to brake vacuum pumps returned with trouble not found, please follow the proper diagnostics outline in the service library this also includes checking all electrical and vacuum hose connections prior to replacement of the vacuum pump. This will avoid unnecessary repair and potential charge back on the vacuum pump.
• 10242752Jul 15, 2023Electrical system. USB Hub In-Operable
• 10242798Jul 13, 2023Electrical system. Flash: Battery Pack Control Module (BPCM) Diagnostic and System Updates Customers may experience a false Malfunction Indicator Lamp (MIL) illumination related to PHEV battery: ? P0A80-00 - Contactor Wear Counter Limit Reached. ? P0EDD-00 - Hybrid/EV Battery Pack B Deterioration. Customers may also experience one or more of the following: ? Battery light on the Instrument Panel Cluster (IPC). This bulletin involves…
• 10242794Jul 12, 2023Body and structure. Sunvisor Rocking or Loose One or both sunvisors rocking or are loose This bulletin involves adding foam pads to both sunvisor body mounts.
• 10242770Jul 12, 2023Body and structure. FCA Caribbean Warranty Bulletin ID-23-03 - 2018 - 2023 (Current) Jeep Wrangler (JL) and 2020 - 2023 (Current) Jeep Gladiator (JT) - Corrosion Warranty Claim Simplification (Rev. B)
• 10242769Jul 12, 2023Body and structure. Warranty Bulletin D-23-04 - 2018-2023 (Current) Jeep Wrangler (JL) and 2020-2023 (Current) Jeep Gladiator (JT) - Corrosion Warranty Claim Simplification (Rev. B)
• 10242781Jul 1, 2023Fuel system. Fuel Filler Cap Tether Too Long Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ?P04EC - EVAP System Large Leak Detected - Fuel Tank Side. ? P04EE - EVAP System Very Small Leak Detected - Fuel Tank Side. Customers may also comment the following: ? There is a…
• 10241146Jun 30, 2023Visibility (wipers, defrost, mirrors). A/C Diagnostic LOP Change (Except Alfa Romeo Vehicles)
• 10241035Jun 29, 2023Equipment, Other or unknown. Radio Black Screen, Freezing, Reset, Cutting Out Or Inoperative Intermittently
• 10241116Jun 23, 2023Electrical system. Flash: Integrated Dual Charging Module (IDCM) Enhancements Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTCs have been set: ? B22A9-16 - ECU Internal Performance-Circuit Voltage Below Threshold. ? B22A9-17 - ECU Internal Performance-Circuit Voltage Above Threshold. ? B22A9-19 - ECU Internal Performance-Overcurrent.** ?…
• 10241022Jun 18, 2023Engine cooling, Transmission and drivetrain. Customer complaint may include a MIL-on or check engine lamp on condition.
• 10241056Jun 16, 2023Equipment, Electrical system. Customer Satisfaction Notification ZD7 - Radio Software Update
• 10241088Jun 15, 2023Transmission and drivetrain, Electrical system. Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? **P02EE - Cylinder 1 Injector Circuit Performance. ? P02EF - Cylinder 2 Injector Circuit Performance. ? P02F0 - Cylinder 3 Injector Circuit Performance. ?
• 10240039May 26, 2023Body and structure. Gate bumber falls.
• 10240002May 24, 2023Electrical system, Equipment. Customer Satisfaction Notification ZD7 - Radio Software Update
• 10240035May 21, 2023Engine cooling. MIL lamp-on. Engine noise, rattle. Misfire or rough running.
• 10240004May 18, 2023Equipment. SOS, Assistance Calls Not Successful After Radio Replacement or Radio Software Update
• 10239957May 18, 2023Engine cooling. Water Quality When Mixed With Engine Coolant
• 10240030May 12, 2023Engine cooling. Clunk Noise From Front End Driving Between 15 And 35 MPH And When Decelerating. C0604- Active Air Dam Control Performance
• 10240023May 5, 2023Engine cooling, Transmission and drivetrain. Upon turning the vehicle on, vehicle propulsion system is inoperative.
• 10240022May 3, 2023Electrical system. "Check Charge Cable" Message Appears On Cluster
• 10240021May 3, 2023Electrical system. Vehicle May Not Start, Service High Voltage System Warning Displayed, DTC P1D72-00 Open High Voltage Cable
• 10239855May 2, 2023Engine cooling. PSU right intake camshaft Case 1) If you are to flash the PSU (Pentastar Upgrade Engine) PCM due to P0300 code presence, only AB or previous LEVEL PSU right intake camshaft PN 05047913AA or AB (old version) should be replaced. If the engine is equipped with the AC/AD LEVEL PSU right intake camshaft PN 05047913AC or AD (new version), camshaft should NOT be replaced.
• 10239854May 2, 2023Back-over prevention (rear camera). ROCKER ARM ASSY - ROLLER ROCKER Case 1.- Before replacing the intake or exhaust rocker arms due to an abnormal ticking noise, please check that the INTAKE Hydraulic Lash Adjusters are not "collapsed". If a collapsed INTAKE HLA is found, replace all INTAKE HLAs on the suspect cylinder head (no need to replace rocker arms). The noise can occur at low or high RPMs, and at low or high temperatures. There are no…
• 10236897Apr 26, 2023Engine cooling. Customer Satisfaction Notification ZD8 Coolant Leak
• 10236969Apr 25, 2023Visibility (wipers, defrost, mirrors). Mirror
• 10236934Apr 15, 2023Electrical system, Brakes. Flash: Anti-Lock Brake System (ABS) Module Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTC has been set: ? C2206-00 - Vehicle Configuration Mismatch. Customer may also experience one or more of the following: ? Inconsistent or unexpected brake performance is perceived in slow speed situations. ?
• 10236933Apr 15, 2023Engine cooling, Equipment. wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK
• 10236930Apr 15, 2023Electrical system. Battery Charge Indicator (BCI) Replacement Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTC has been set: ? B1271-00 - Charge Level Indicator Internal. Customer may also experience the following: ? BCI does not indicate charge status while the vehicle is charging. This bulletin involves replacing the BCIM.
• 10236800Apr 6, 2023Transmission and drivetrain, Wheels. Axle Assembly Do not replace the Axle for Axle Locker Sensor failure. The parts kit (SENSOR KIT, Axle: 68544629A$) must be used to repair the Axle Locker Sensor on JL/JT equipped with the M210 and M220 Tru-Lok axles (DSE).
• 10248049Feb 28, 2023Back-over prevention (rear camera). Radio Over The Air Updating to QR40.12 Software Version Mobile Wi-Fi inoperative upon start up. ? Hotspot gives 9No Internet9 connection message on phone, when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air (FOTA) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software…
• 10247967Feb 28, 2023Exterior lighting, Back-over prevention (rear camera). Malfunction Indicator Lamp Illumination (MIL). Diagnostic Trouble Code (DTC) P203E ? Reductant Level Sensor 1 Circuit Intermittent-Erratic Set.
• 10234522Feb 28, 2023Equipment, Electrical system. Radio Over The Air Updating to QR40.12 Software Version Mobile Wi-Fi inoperative upon start up. ? Hotspot gives 9No Internet9 connection message on phone, when trying to connect to a device. This bulletin provides information regarding the latest Firmware Over The Air (FOTA) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software…
• 10234440Feb 28, 2023Back-over prevention (rear camera), Exterior lighting. Malfunction Indicator Lamp Illumination (MIL). Diagnostic Trouble Code (DTC) P203E ? Reductant Level Sensor 1 Circuit Intermittent-Erratic Set.
• 10248045Feb 25, 2023Exterior lighting. Headlamp Condensation Clearing Procedure Some customers may report that on occasion, vehicle exterior head lamp assemblies are fogged with a light layer of condensation on the inside of the lenses (Fig. 1) . This bulletin is to communicate the procedure for head lamp condensation clearing.
• 10234518Feb 25, 2023Exterior lighting. Headlamp Condensation Clearing Procedure Some customers may report that on occasion, vehicle exterior head lamp assemblies are fogged with a light layer of condensation on the inside of the lenses (Fig. 1) . This bulletin is to communicate the procedure for head lamp condensation clearing.
• 10247907Feb 22, 2023Transmission and drivetrain. FILTER KIT, Transmission Oil For leak concerns that have been isolated to a transmission pan gasket, please replace ONLY the gasket. Pan/filter replacement are not required.
• 10247906Feb 22, 2023Engine cooling. ADAPTER, Engine Oil Filter (Pentastar V6) For all 2014MY replace the Oil Filter Adapter (OFA). For any other MY review and follow instructions from the latest STAR Online S1809000007 available on Dealer Connect. Also, consider the following: 1) Remove OFA 2) Replace only the oil inlet O-ring and gaskets (seals kit in SOL above). 3) Re-install the OFA. For 2023MY and beyond use black O-ring. For 2022MY and prior use…
• 10234380Feb 22, 2023Transmission and drivetrain. FILTER KIT, Transmission Oil For leak concerns that have been isolated to a transmission pan gasket, please replace ONLY the gasket. Pan/filter replacement are not required.
• 10234379Feb 22, 2023Engine cooling. ADAPTER, Engine Oil Filter (Pentastar V6) For all 2014MY replace the Oil Filter Adapter (OFA). For any other MY review and follow instructions from the latest STAR Online S1809000007 available on Dealer Connect. Also, consider the following: 1) Remove OFA 2) Replace only the oil inlet O-ring and gaskets (seals kit in SOL above). 3) Re-install the OFA. For 2023MY and beyond use black O-ring. For 2022MY and prior use…
• 10247977Feb 16, 2023Engine cooling. Customer Satisfaction Notification ZD8 Coolant Leak

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