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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: 12-volt battery are shown. Show all

Bulletins, newest first
S14080003842024-03-18. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. 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
S18080000572023-12-18. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Inspecting And Disconnecting Negative Battery Cables On ESS Vehicles
08100232023-05-30. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. 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.
0805422REVB2023-01-09. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. Flash: Battery Pack Control Module (BPCM) Diagnostic and System Updates This bulletin involves updating the BPCM with the latest available software. Customers may experience a false Malfunction Indicator Lamp (MIL) illumination related to PHEV battery: 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. Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this BPCM update:Hybrid Control Processor (HCP), Auxiliary Hybrid Control Processor (AHCP) also known as the Power Inverter Module (PIM). Transmission Control Module (TCM). Powertrain Control Module (PCM). Integrated Dual Charging Module (IDCM).
NotificationZ272023-01-09. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Customer Satisfaction Notification Z27 PHEV Battery Replacement
91000112023-01-09. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM. Battery Kit, Hybrid NOTE 1 of 2: Beginning April 1, 2022, a $5,000 penalty will be assessed to dealers who return any visually damaged battery to the supplier. Improper handling of damaged lithium ion batteries can causer property damage, serious injury or even death. Exemptions will not be made for any dealer who fails to follow the appropriate handling process. To read the DCMail communication, go to DealerCONNECT > DCMail (ID: 81758). For details on recyclers, please visit the Mopar Dealer Site Lithium Ion Battery Handling page: https://www.dealers-mopar.com/moparone/retail/programs/battery-program/lithium-ion.jsp NOTE 2 of 2: When replacing the HV battery, or any cooling component within any of the cooling systems, please ensure that the service procedure is followed by using a coolant vacuum fill tool to ensure all trapped air is removed from the coolant system. The battery cooling system is complex with small coolant passages used to cool electronics. It is fed by a small electronic pump that does not develop the pressure head to "burp" the cooling system in the same manner that an engine water pump often will. All electric pumps are designed to sense air in the cooling system. Proper service procedures and proper equipment must be used. Failure to do so may result in vehicle damage or customer return for MIL lights due to air in the cooling system.
S17080001182023-01-09. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Battery Drain Concern, Dual USB Port Normal Operational Draw, Extended Illumination Or Extended Operation After Key Off
S22080001782022-12-12. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Battery Warning Lamp On, Battery Charging Voltage Fluctuates
S22080001552022-11-07. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Battery Charge Indicator (BCI) Does Not Illuminate
Z272022-10-31. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Customer Satisfaction Notification Z27 PHEV Battery Replacement
91000112022-10-31. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Battery Kit, Hybrid NOTE 1 of 2: Beginning April 1, 2022, a $5,000 penalty will be assessed to dealers who return any visually damaged battery to the supplier. Improper handling of damaged lithium ion batteries can causer property damage, serious injury or even death. Exemptions will not be made for any dealer who fails to follow the appropriate handling process. To read the DCMail communication, go to DealerCONNECT > DCMail (ID: 81758). For details on recyclers, please visit the Mopar Dealer Site Lithium Ion Battery Handling page: https://www.dealers-mopar.com/moparone/retail/programs/battery-program/lithium-ion.jsp NOTE 2 of 2: When replacing the HV battery, or any cooling component within any of the cooling systems, please ensure that the service procedure is followed by using a coolant vacuum fill tool to ensure all trapped air is removed from the coolant system. The battery cooling system is complex with small coolant passages used to cool electronics. It is fed by a small electronic pump that does not develop the pressure head to "burp" the cooling system in the same manner that an engine water pump often will. All electric pumps are designed to sense air in the cooling system. Proper service procedures and proper equipment must be used. Failure to do so may result in vehicle damage or customer return for MIL lights due to air in the cooling system.
S22080001082022-06-27. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT ADAPTIVE/MOBILITY. PHEV Vehicle Does Not Charge With The Jeep Branded 32 Amp Charger Or Other Level 2 Battery Chargers
S2208000108 Rev.2022-06-27. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT. PHEV Vehicle Does Not Charge With The Jeep Branded 32 Amp Charger Or Other Level 2 Battery Chargers
08106212022-05-31. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR; EQUIPMENT. 12V Battery Low Charge This bulletin involves testing and possibly replacing the 12V battery. Technicians or 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: U3007-00 - Control Module Input Power "B" Circuit/Open. C2100-00 - Battery Voltage Low. C05A4-00 - Wheel Speed Sensors Supply Circuit Low. C2129-00 - Battery Voltage. U3006-00 - Control Module Input Power "A" Circuit/Open. B2199-16 - Battery Voltage-Circuit Voltage Below Threshold. B21DD-84 - System Voltage-Signal Below Allowable Range. B2199-16 - Battery Voltage-Circuit Voltage Below Threshold. Technicians or customers may also experience one or more of the following:Depleted 12V battery at delivery to dealer. Vehicle will not start.
S2108000086 Rev.2021-05-24. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. The 12V Battery Low Has A Low Charge Level Upon Delivery
S21080000862021-05-24. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. The 12V Battery Low Has A Low Charge Level Upon Delivery

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