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.

• 11038557Oct 10, 2026Electrical system. High Voltage Battery Has Lower SOC After Overnight Sleep Cycle
• 11038520Oct 10, 2026Electrical system. High Voltage Battery Has Lower SOC After Overnight Sleep Cycle
• 11038526Oct 9, 2026Electrical system. Flash: Drivetrain Control Module (DTCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● C147B-92 - Front Axle Disconnect Sensor Performance or Incorrect Operation Customers may comment on one or more of the following: ● 4WD system warning lights, service messages, or flashing indicators are…
• 11038489Oct 9, 2026Electrical system. Flash: Drivetrain Control Module (DTCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● C147B-92 - Front Axle Disconnect Sensor Performance or Incorrect Operation Customers may comment on one or more of the following: ● 4WD system warning lights, service messages, or flashing indicators are…
• 11038329Sep 30, 2026Transmission and drivetrain. The Customer May Complain About a Popping Noise, Grinding Noise, or an Intermittent No Reverse or Forward Transmission Engagement. The Tech May Find Damaged and/or Worn Transmission Output Shaft Splines (850RE Transmission Only)
• 11037598Sep 24, 2026Steering. Socket - drag link inner
• 11037597Sep 24, 2026Steering. Socket - drag link inner
• 11037346Sep 8, 2026Electrical system, Body and structure. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
• 11036762Aug 26, 2026Engine. Turbocharger Kit Please note that many turbo components are serviceable separately and full turbo replacement may not be required. If the turbo is being inspected for: Noise/Rattle: Inspect heat shield fasteners for looseness and check the wastegate actuator/linkage for binding. The actuator kit is serviced separately. Oil Leak: Inspect the turbo oil feed O-ring area for leaks. O-ring is serviced separately.
• 11036282Aug 12, 2026Body and structure. ID-25-11 Rev. C Aluminum Filiform Corrosion Warranty Policy and Vehicle Digital Imaging (VDI) Pre-Approval Process - ALL Vehicles
• 11036281Aug 12, 2026Body and structure. D-25-15 Rev. C Aluminum Filiform Corrosion Warranty Policy and Vehicle Digital Imaging (VDI) Pre-Approval Process - ALL Vehicles
• 11036183Aug 6, 2026Electrical system. EMISSION RECALL – NORTH AMERICA Check Engine/Malfunction Indicator Lamp 16C The instrument panel cluster on about 32,587 of the above vehicles may have an inoperable check engine/malfunction indicator lamp (CEL/MIL). (JT) vehicles: CEL/MIL and cargo lamp indicator function are swapped. (JL) vehicles: CEL/MIL will not turn on. The CEL/MIL in and of itself will not affect emissions.
• 11035078Jul 7, 2026Engine. CORE – HEATER
• 11035077Jul 7, 2026Engine. CORE – HEATER
• 11034898Jul 3, 2026Electrical system. Flash: Integrated Dual Charging Module (IDCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation SYMPTOM: the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ● **B22A9-87 - ECU Internal Performance - Missing Message. ● P0D21-00 - Battery Charger "A" Output Voltage Too Low.** ● B22A9-16 - ECU Internal…
• 11034912Jun 30, 2026Engine. Throttle body – none
• 11034911Jun 30, 2026Engine. Throttle body – none
• 11034372Jun 23, 2026Electrical system. Motor - blower with wheel
• 11034371Jun 23, 2026Electrical system. Motor - blower with wheel
• 11034335Jun 18, 2026Engine. Bolt - hex flange head
• 11034324Jun 18, 2026Transmission and drivetrain. Transmission Auxiliary Oil Pump Failure Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set **one or more the following Diagnostic Troubles Code (DTCs): ● U0287-00 - Lost Communication With Transmission Fluid Pump Module 1.** ● P0B0D-00 - Electric/Auxiliary Transmission Fluid Pump Motor Control Module. Customers may also comment on the following: ●…
• 11034336Jun 15, 2026Other or unknown. Heater - electric coolant
• 11034327Jun 15, 2026Other or unknown. Heater - electric coolant
• 11033944Jun 12, 2026Electrical system. Fuel Oil Refresh Mode (FORM) Message - Safety Recall 68C Supplement Technicians may experience the following: ● A FORM message will display in the Instrument Panel Cluster (IPC) after performing RC-682-25 - Safety Recall 68C - High Voltage Battery
• 11033957Jun 8, 2026Electrical system. Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
• 11033896Jun 5, 2026Electrical system, Body and structure. Passive Entry Exterior Door Handle Inoperative When Touched To Lock And Or Unlock.
• 11033882Jun 2, 2026Electrical system, Body and structure. Motor and linkage - windshield wiper
• 11032847May 15, 2026Transmission 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.
• 11032842May 13, 2026Electrical system. Radio Message "Power Surge On USB Detected" Customers may comment on the following: ● The radio displays the message: “Power surge on USB hub detected” Fig. 1. NOTE: After the message appears, no USB devices function in the hub (no charging, no data). NOTE: Hub operation does not return until the vehicle undergoes a full key cycle.
• 11032824May 7, 2026Electrical system. Radio Message "Power Surge On USB Detected" Customers may comment on the following: ● The radio displays the message: “Power surge on USB hub detected” Fig. 1. NOTE: After the message appears, no USB devices function in the hub (no charging, no data). NOTE: Hub operation does not return until the vehicle undergoes a full key cycle
• 11032647May 7, 2026Electrical system. Radio Message "Power Surge On USB Detected" Customers may comment on the following: ● The radio displays the message: “Power surge on USB hub detected” Fig. 1. NOTE: After the message appears, no USB devices function in the hub (no charging, no data). NOTE: Hub operation does not return until the vehicle undergoes a full key cycle
• 11031660Apr 22, 2026Electrical system. High Voltage Battery Pack Replacement XU1 Warranty Extension 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): ● 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 "A"…
• 11031462Apr 17, 2026Electrical system. Before replacing the PIM, please check if the HV DC Connector is seated properly on the PIM and Battery control module. Reference: S2108000121 - Rev. B
• 11031250Apr 1, 2026Electrical system. Before replacing High voltage harness, please note the connector bolt and connector seal is available for replacement. Please see below for Connector bolt and seal part number available. Reference SOL S2608000019
• 11031239Apr 1, 2026Electrical system. High Voltage Connector Seal And Fastener Service Parts Are Now Available
• 11031248Mar 31, 2026Electrical system. Before replacing High voltage harness, please note the connector bolt and connector seal is available for replacement. Please see below for Connector bolt and seal part number available. Reference SOL S2608000019
• 11030435Mar 27, 2026Body and structure. Wind Noise From Hard Top Freedom Panels Near Rear View Mirror While Driving.
• 11030413Mar 24, 2026Electrical system. Rear Defroster Inoperative Customers may experience one or more of the following: SYMPTOM: ● 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.
• 11030229Mar 21, 2026Engine. Flash: Powertrain Control Module (PCM) Updates 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): ● **P0111-00 - Intake Air Temperature Sensor 1 Circuit Range Performance Bank 1. (In Active or Stored status) ● P0071-00 - Ambient Air Temperature Sensor Performance. (In Active or Stored…
• 11030262Mar 17, 2026Electrical system. Emissions Recall 16C - Check Engine/Malfunction Indicator Lamp - Dealer Notification (Revision 2)
• 11030138Mar 9, 2026Transmission and drivetrain. The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV, 8HP75-LCV, 8HP90, 8HP95. Transmissions may exhibit the following diagnostic codes: P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
• 11030042Mar 5, 2026Electrical system. Active Diagnostic Trouble Code (DTC) B1A10-00, B1A11-00, B1A12- 00, B1A13-00-, B1A14-00, B1A15-00, B1A16-00, and B1A17-00 in The Radio Frequency Hub (RFH)
• 11030034Mar 5, 2026Electrical system. ID-26-06 Rev. A (XU1) High Voltage Battery Pack - Select 2021-2025 Jeep Wrangler (JL) and 2022-2026 Jeep Grand Cherokee/ Grand Cherokee (WL)
• 11030033Mar 5, 2026Electrical system. D-26-06 Rev. A (XU1) High Voltage Battery Pack - Select 2021-2025 Jeep Wrangler (JL) and 2022-2026 Jeep Grand Cherokee/ Grand Cherokee (WL)
• 11030035Mar 4, 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
• 11029836Feb 25, 2026Body and structure. Handle - inside release
• 11029770Feb 25, 2026Transmission and drivetrain. Service transmission/check engine warning indicator for the 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV transmissions that have fault codes P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
• 11029765Feb 25, 2026Body and structure. Handle - inside release
• 11029683Feb 21, 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.
• 11029691Feb 19, 2026Body and structure. ID-25-11 Rev. B Aluminum Filiform Corrosion Warranty Policy and Vehicle Digital Imaging (VDI) Pre-Approval Process - ALL Vehicles

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