WenmarOpen by Wenmar Pro

Service bulletins for the 2021 Jeep Wrangler

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1062 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
1107712026-03-13. Warranty extension. ELECTRICAL 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)
1107702026-03-13. Warranty extension. ELECTRICAL 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)
1104092026-03-05. Warranty extension. ELECTRICAL SYSTEM. ID-26-06 (XU1) High Voltage Battery Pack - Select 2021 - 2025 Jeep Wrangler (JL) and 2022 - 2026 Jeep Grand Cherokee/ Grand Cherokee (WL)
1103912026-03-05. Warranty extension. ELECTRICAL SYSTEM. D-26-06 (XU1) High Voltage Battery Pack - Select 2021 - 2025 Jeep Wrangler (JL) and 2022 - 2026 Jeep Grand Cherokee/ Grand Cherokee (WL)
18-005-26 REV.A2026-03-05. Service bulletin. POWER TRAIN; ENGINE; ELECTRICAL SYSTEM. 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 - Multiple Cylinder Misfire. Customers may also comment on one or more of the following: ● "Service Transmission” message on in the Instrument Panel Cluster (IPC) due to clutch slip detection. (Manual Transmission and NA Only) NOTE: Customers might experience wheel spin or slippage and the PCM could interpreted the wheel spin or slippage as slipping the clutch too much and to avoid clutch damage, the customer may see the message in the IPC. ● Vehicle is in limp home mode.(NA Only) ● Spark knock/detonation sound from the engine at idle. Other software enhancements included: ● Engine oil pump in high pressure mode with cold engine oil to improve valvetrain component reliability. (NA Only) This bulletin involves reprogramming the PCM with the latest available software.
08-072-262026-03-05. Service bulletin. ELECTRICAL 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 "A" Voltage Unstable. ● P0B28-00 - Hybrid/EV Battery "B" Voltage Unstable. NOTE: ● Any warranty qualifying issues outside of these specific DTCs will continue to be covered per the HV battery standard warranty coverage. ● Battery packs may contain cells with separator damage. Customers may comment on the following: ● “Service Charging System” message displayed in the Instrument Panel Cluster (IPC) and charging is inhibited. This bulletin involves replacing the high voltage battery pack.
S1408000384 REV.I2026-02-19. Service bulletin. ELECTRICAL 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
S2408000024 REV.B2026-02-19. Service bulletin. STRUCTURE:BODY; ELECTRICAL SYSTEM. Power Top Switch Unresponsive, Full Retractable Sky Roof Does Not Open or Close
S26230000062026-02-19. Service bulletin. ELECTRICAL SYSTEM. Washer Fluid Warning Lamp Illuminated When Reservoir Is Full
S2108000121 REV.B2026-02-19. Service bulletin. ELECTRICAL SYSTEM. Check Engine Light On And Service Hybrid System Displayed. P0A0A-00 High Voltage System Interlock Circuit “A” Is Active
16C Combo REV12026-02-19. Warranty extension. ELECTRICAL SYSTEM. EMISSION RECALL – NORTH AMERICA Check Engine/Malfunction Indicator Lamp Reference: 16C
18-005-262026-02-04. Service bulletin. ELECTRICAL 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 - Multiple Cylinder Misfire. Customers may also comment on one or more of the following: ● **"Service Transmission” message on in the Instrument Panel Cluster (IPC) due to clutch slip detection. (NA Only) (Manual Transmission Only) NOTE: Customers might experience wheel spin or slippage and the PCM could interpreted the wheel spin or slippage as slipping the clutch too much and to avoid clutch damage, the customer may see the message in the IPC. ● Vehicle is in limp home mode. (NA Only)** ● Spark knock/detonation sound from the engine at idle. **Other software enhancements included: ● Engine oil pump in high pressure mode with cold engine oil to improve valvetrain component reliability. (NA Only)** This bulletin involves reprogramming the PCM with the latest available software.
08-036-262026-02-04. Service bulletin. ELECTRICAL 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 Battery System Precharge Time Too Long. ● P0CA6 - Hybrid/EV Battery Charging Current High. ● P0B24 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E - Hybrid/EV Battery State Of Health Failed.** ● P1A21-00 - HV Battery Contactor Control Sequence Incorrect. ● P0B3E-00 - Hybrid/EV Battery Voltage Sense 1 Circuit High. ● P0607-00 - ECU Internal Performance. ● P1E1B-00 - Hybrid/EV Battery Side Voltage System Isolation. ● P0AA4-00 - Hybrid Battery Negative Contactor Circuit Stuck Closed. ● P1C00-00 - Hybrid/EV Battery Voltage Sense 1 Out Of Range Low. ● P1C01-00 - Hybrid/EV Battery Voltage Sense 1 Out Of Range High. ● P1A9B-00 - Hybrid/EV Battery Temperature Sensor 1 Out Of Range High. ● P0BBD-00 - Hybrid Battery Pack Voltage Variation Exceeded Limit. ● P167B-00 - Controlled System Shutdown. ● U1885-00 - Battery Energy Control Module Lost Communication With HCP. ● P0EDD-00 - Hybrid/EV Battery Pack B Deterioration. ● U0111 - Lost Communication With Hybrid Battery Pack Sensor Module. ● P0CA7-00 - Hybrid/EV Battery Discharging Current High. ● P1A0C-00 - Battery Energy Control Module System Voltage Low. J08 FSAR-TSB-6892 -2- **Customers may also comment on the following: ● Vehicle does not start. NOTE: The no start condition is accompanied with the following DTCs: P0DAB-00, P0607-00, P0AA1, P0AA4, P0C78, P0CA6, P0B24 and/or P1C5E. P0B28 will result in a MIL for 49 days. After 49 days of the MIL, the vehicle will no longer be allowed to start.** This bulletin involves reprogramming the BPCM with the latest available software. NOTE: Additional module flashes are requ
18-109-252025-12-17. Service bulletin. ELECTRICAL 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. Customers may comment on one or more of the following: ● Fuel Door will not open due to intermittent Fuel Tank Isolation Valve (FTIV) Stuck Open. ● Reduced fuel efficiency. In addition, the following software enhancement is available: ● Hood Switch changes. This bulletin involves reprogramming the PCM, HCP and AHCP, also known as the Power Inverter Module (PIM) with the latest available software
16C Combo2025-12-17. Emissions. ELECTRICAL SYSTEM. Check Engine/Malfunction Indicator Lamp 16C
91007362025-12-17. Service bulletin. ELECTRICAL 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
1085442025-12-11. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE:BODY. SWITCH - POWER WINDOW
08-314-252025-10-02. Service bulletin. ELECTRICAL 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 Microphone 4-Circuit Short To Battery. NOTE: The DTCs are wrongly set and do not affect Active Noise Cancellation (ANC) performance This bulletin involves updating the AMP with the latest available software.
S2218000003 REV.B2025-09-24. Service bulletin. ELECTRICAL 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:
08-229-252025-08-06. Service bulletin. ELECTRICAL 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 involves updating the RFHM module with the latest available software.
S2422000001 REV.D2025-07-31. Service bulletin. ELECTRICAL SYSTEM. Tire Pressure Monitor (TPM) Service Information. TPM Lamp On.
S2208000138 REV.B2025-07-09. Service bulletin. ELECTRICAL SYSTEM. Decreased Remote Start And RKE Range. Tire Pressure Sensors Values Are Not Displayed
1049662025-06-02. Service bulletin. ELECTRICAL SYSTEM. BEZEL & INDICATOR- GEAR SHIFT INDICATOR
S2408000024REVA2025-05-28. Service bulletin. ELECTRICAL 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.
S2323000002 REV.A2025-05-19. Service bulletin. ELECTRICAL SYSTEM. "Washer Light On And Will Not Turn Off After Adding Washer Solvent."

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.