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.

• 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, 2026Body and structure, Electrical system. 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
• 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
• 11034345Jun 15, 2026Engine. Check Engine Light (CEL) Illuminated with Diagnostic Trouble Code (DTC) P0106 Manifold Absolute Pressure Sensor Performance Setting In The Powertrain Control Module (PCM)
• 11034336Jun 15, 2026Other or unknown. Heater - electric coolant
• 11034327Jun 15, 2026Other or unknown. Heater - electric coolant
• 11033957Jun 8, 2026Electrical system. Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
• 11033896Jun 5, 2026Body and structure, Electrical system. Passive Entry Exterior Door Handle Inoperative When Touched To Lock And Or Unlock.
• 11033882Jun 2, 2026Body and structure, Electrical system. 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
• 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)
• 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
• 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
• 11029693Feb 18, 2026Body and structure. FCA Caribbean Warranty Newsletter – Volume 12, Issue 2
• 11029692Feb 18, 2026Body and structure. Warranty Newsletter – Volume 12, Issue 2
• 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.
• 11029673Feb 17, 2026Engine, Electrical system, Transmission and drivetrain. 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): ● P08A6 - Gear Lever Position Sensor System – Multiple Sensor Correlation. (Manual Transmission and NA Only) ● P152F - Engine Hood Switch 2 / Engine Hood Switch 1 Correlation. (NA Only) ● P0300…
• 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, 2026Body and structure, Electrical system. 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
• 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
• 11028232Jan 29, 2026Electrical system. Flash: Powertrain Control Module (PCM) 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): ● **P08A6 – Gear Lever Position Sensor System – Multiple Sensor Correlation. (NA Only) (Manual Transmission Only) ● P152F – Engine Hood Switch 2 / Engine Hood Switch 1 Correlation. (NA Only)** ● P0300…

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