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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

Bulletins, newest first
NotificationZ272023-01-09. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Customer Satisfaction Notification Z27 PHEV Battery Replacement
S22210000032023-01-09. Service bulletin. POWER TRAIN. 8-Speed Transmission, Additional Transmission Fluid Leak Inspection/Repair Guidelines.
S228A0000222023-01-09. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Connected Service Requires Service Message
S2003000001RevE2023-01-09. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. Noise From The Front Axle Area Over Bumps
S2008000103RevA2023-01-09. Service bulletin. ELECTRICAL SYSTEM. No Start, Stop Start Inoperative, Battery or Check Engine Light (CEL) Illuminated
S2108000056RevD2023-01-09. Service bulletin. ELECTRICAL SYSTEM. U0111-00 Lost Communication With Battery Energy Control Module Set In The HCP. BPCM Offline, Multiple Low Voltage DTC?s.
S22080001502023-01-09. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Malfunction Indicator Lamp (MIL) On, ?Check Fuel Cap? Message
S2025000006RevA2023-01-09. Service bulletin. ENGINE AND ENGINE COOLING. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P206D ? Reductant Quality Sensor Circuit High Set.
S2208000027RevA2023-01-09. Service bulletin. ELECTRICAL SYSTEM. Cluster Message ?Electric Mode Unavailable Cabin Heating or Cooling? or ?Electric Mode Temporarily Unavailable?, Vehicle Engine Runs All the Time Does Not Enter Electric Vehicle (EV) Mode
S2208000020RevA2023-01-09. Service bulletin. ELECTRICAL SYSTEM. Electric Mode Temporarily Unavailable, Cluster Message Displayed Vehicle in Fuel Oil Refresh Mode (FORM)
S22080001442023-01-09. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS. Front Park Sensors Not Providing Warning After a Recent Service Repair
S22070000022023-01-09. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:COOLER/RADIATOR:HOSES AND FITTINGS; UNKNOWN OR OTHER. Coolant leak
852302023-01-09. Service bulletin. UNKNOWN OR OTHER; SEATS. CABLE - FRONT SEAT
850082023-01-09. Service bulletin. UNKNOWN OR OTHER; STRUCTURE:BODY:ROOF AND PILLARS. TOP KIT - SOFT
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 $5,000 penalty will be assessed to dealers who return any visually damaged battery to the supplier. Improper handling of damaged lithium ion batteries can causer property damage, serious injury or even death. Exemptions will not be made for any dealer who fails to follow the appropriate handling process. To read the DCMail communication, go to DealerCONNECT > DCMail (ID: 81758). For details on recyclers, please visit the Mopar Dealer Site Lithium Ion Battery Handling page: https://www.dealers-mopar.com/moparone/retail/programs/battery-program/lithium-ion.jsp NOTE 2 of 2: When replacing the HV battery, or any cooling component within any of the cooling systems, please ensure that the service procedure is followed by using a coolant vacuum fill tool to ensure all trapped air is removed from the coolant system. The battery cooling system is complex with small coolant passages used to cool electronics. It is fed by a small electronic pump that does not develop the pressure head to "burp" the cooling system in the same manner that an engine water pump often will. All electric pumps are designed to sense air in the cooling system. Proper service procedures and proper equipment must be used. Failure to do so may result in vehicle damage or customer return for MIL lights due to air in the cooling system.
91000222023-01-09. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. Water Pump For concern of leak at water pump, please check and re-torque water pump inlet tube fasteners as described in Service Bulletin 07-001-22 before replacing the water pump.
91000102023-01-09. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. Axle Assembly A parts kit (SENSOR KIT, Axle: 68544629A$) is available to repair the Axle Locker Sensor on JL/JT equipped with the M210 and M220 Tru-Lok axles (DSE). This parts kit must be used when only the Axle Locker Sensor fails. Do not replace the axle for sensor failure.
S18080002842023-01-09. Service bulletin. VEHICLE SPEED CONTROL; LANE DEPARTURE; VISIBILITY. Power Mirrors And Door Locks Do Not Function. Blind Spot Alert Temporarily Unavailable Is Displayed On The EVIC
S20080001032023-01-09. Service bulletin. ELECTRICAL SYSTEM. No Start, High Current Fuse Array (HCFA) Location And Testing
S20250000062023-01-09. Service bulletin. BACK OVER PREVENTION; EXTERIOR LIGHTING. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P206D ? Reductant Quality Sensor Circuit High Set.
08032222023-01-09. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING. Flash: Anti-Lock Brake System (ABS) Module Updates This bulletin involves reprogramming the ABS module with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one of the following Diagnostic Trouble Code (DTC) has been set: C055F-00 - ABS Hydraulic Unit Performance.The software update will correct C055F-00 if it is a stored fault. If the fault is active, follow normal DTC diagnostics in Service Library.
14004222023-01-09. Service bulletin. EXTERIOR LIGHTING; FUEL SYSTEM, GASOLINE. Updated Fuel Filler Cap and Fuel Filler Tube This bulletin involves updating the upper fuel filler tube and cap with improved versions. 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 "Check Gas Cap" message in the Instrument Panel Cluster (IPC).The above condition is caused from an air leak through the fuel filler cap and fuel filler neck seal.
07001222023-01-09. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. Water Pump Inlet Tube Fastener Torque This bulletin involves checking the torque on the water pump inlet tube fastenersto possibly eliminate coolant leak at this location. The customer may describe either a coolant leak or the coolant level is low.
18041222023-01-09. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTC: P0300 - Multiple Cylinder Misfire. In addition, customers may experience the following concern: Spark knock/detonation sound from the engine at idle.
08054222023-01-09. Service bulletin. ELECTRICAL SYSTEM. Flash: Battery Pack Control Module (BPCM) Diagnostic and System Updates This bulletin involves updating the BPCM with the latest available software.

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