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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: Brakes are shown. Show all

Bulletins, newest first
1084632025-11-26. Service bulletin. SERVICE BRAKES. PAD KIT - REAR DISC BRAKE, FRONT DISC BRAKE
1084642025-11-26. Service bulletin. SERVICE BRAKES. PAD KIT - REAR DISC BRAKE, FRONT DISC BRAKE
S1805000006 REV.B2025-11-13. Service bulletin. SERVICE BRAKES. ESC Light Illuminated. DTC C1252-92 VACUUM PUMP CONTROL CIRCUIT And Or P258B ELECTRONIC VACUUM PUMP PERFORMANCE
1074182025-10-02. Service bulletin. SERVICE BRAKES. SWITCH - CLUTCH STARTER INTERLOCK & MASTER CYLINDER ASSEMBLY - CLUTCH
S2405000001 Rev B2025-03-19. Service bulletin. SERVICE BRAKES. Antilock Brake System (ABS) Module Will Not Initialize After Recent Service Replacement.
S2405000001 REV.A2025-01-16. Service bulletin. SERVICE BRAKES. Antilock Brake System (ABS) Module Will Not Initialize After Recent Service Replacement.
S24050000012024-10-03. Service bulletin. SERVICE BRAKES. Antilock Brake System (ABS) Module Will Not Initialize After Recent Service Replacement.
91001342024-01-02. Service bulletin. SERVICE BRAKES; FUEL SYSTEM, GASOLINE; BACK OVER PREVENTION. Engine When replacing a GMET4 long block from a 2021 JL or older, you will need to carry over the injector wiring harness from the original engine, and the Fuel pressure sensor should be replaced with part number: 68212572AB.
90044332023-09-25. Service bulletin. SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM; SERVICE BRAKES; ELECTRICAL SYSTEM. PUMP, Vacuum For DTC Code P258B - ELECTRONIC VACUUM PUMP PERFORMANCE. Due to brake vacuum pumps returned with trouble not found, please follow the proper diagnostics outline in the service library this also includes checking all electrical and vacuum hose connections prior to replacement of the vacuum pump. This will avoid unnecessary repair and potential charge back on the vacuum pump.
08099232023-05-30. Service bulletin. SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM. Flash: Anti-Lock Brake System (ABS) Module Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTC has been set: ? C2206-00 - Vehicle Configuration Mismatch. Customer may also experience one or more of the following: ? Inconsistent or unexpected brake performance is perceived in slow speed situations. ? Feels like the brake pedal needs to be pressed harder just before the vehicle comes to a stop (actual braking distance is not affected and driver is able to step further into the pedal for more brake pressure). This bulletin involves reprogramming the ABS with the latest software available.
S19250000082023-01-17. Service bulletin. EXTERIOR LIGHTING; FUEL SYSTEM, GASOLINE; SERVICE BRAKES, HYDRAULIC. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P208B ? Reductant Pump 1 Control Performance, and/or P20E8 ? Reductant Pressure Too Low, Set.
S21080001702023-01-17. Service bulletin. PARKING BRAKE. Head unit button stuck DTC code B14DA-2A
90045012023-01-09. Service bulletin. SERVICE BRAKES; FUEL SYSTEM, GASOLINE. PUMP, Washer, Windshield Windshield washer pump is inop or low pressure If customer comes in with the issue described above, please contact the following individuals prior to servicing the vehicle. FCA Redacted Content If no response in 15 minutes, proceed with repair.
S2208000138RevA2022-12-12. Service bulletin. SERVICE BRAKES. Decreased Remote Start And RKE Range. Tire Pressure Sensors Values Are Not Displayed
91000112022-10-31. Service bulletin. FUEL SYSTEM, GASOLINE; EQUIPMENT; SERVICE BRAKES, HYDRAULIC; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT. 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.
S19250000082022-10-17. Service bulletin. SERVICE BRAKES; FUEL SYSTEM, GASOLINE; EXTERIOR LIGHTING. (Rev. B) Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P20E8 ? Reductant Pressure Too Low and/or P208B ? Reductant Pump 1 Control Performance Set.
S2008000085RevA2022-10-17. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT. ABS, ESC Lamp On, Red Brake Lamp Flashing
S21240000062022-10-17. Service bulletin. SERVICE BRAKES, AIR:SUPPLY:COMPRESSOR. Customer Indicates The AC Compressor Is Loud At Times.
90045012022-10-17. Service bulletin. SERVICE BRAKES; FUEL SYSTEM, GASOLINE. PUMP, Washer, Windshield Windshield washer pump is inop or low pressure If customer comes in with the issue described above, please contact the following individuals prior to servicing the vehicle. FCA Redacted Content If no response in 15 minutes, proceed with repair.
18001222022-10-17. Service bulletin. BACK OVER PREVENTION; ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL; SUSPENSION; EXTERIOR LIGHTING; SERVICE BRAKES, HYDRAULIC; FUEL SYSTEM, GASOLINE; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC). 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, a technician may find one or more of the following DTCs have been set: P04DB - Crankcase Ventilation System Disconnected. P040F - EGR Temperature Sensor A-B Correlation. P225D - Nox Sensor 1/1 Performance - Signal Stuck Low. P0088 - Fuel Rail Pressure Too High. P0404 - EGR ?A? Control Circuit Range/Performance. P20C6 - Reductant Heater 4 Control Circuit Performance. P208B - Reductant Pump 1 Control Performance. P0524 - Low oil pressure (during start up in cold ambient temps). P249C-00 - Excessive Time To Enter Closed Loop Reductant Injection Control. P02E8-00 - Diesel Intake Air Flow Position Sensor Circuit Low. P20FB-00 - Reductant Pump 2 Control Performance. P065A-00 - Generator System Performance. Customers may experience one or more of the following:Slow acceleration. Reduced vehicle speed&torque in high and 4 low. Poor cold idle stability. Poor idle quality with AC on. Excessive engine speed oscillations at tachometer red-line. Following a long key-on situation, poor cold start and idle stability. Cold hard start/extended crank. Block heater not providing a proper cold start and stable idle. High idle speeds at altitude when remote start is active. The cruise control and speed limited set speed doesn?t match the speedometer. It could be up to 2.5 kph (1.5 mph) difference. Other Software enhancements:Corrects instances of vehicles restarting once SRC Inducement is active, and the mileage countdown has expired. Reduce engine delay during cold start garage shifts. Improve idle stability, Improvement of cold start and combustion stability after start during cold ambient temperatures. Eliminate turbocharger surge on tip-out. Eliminate idle oscillation in park and drive. Speedometer accuracy improvement(s). Cruise control updates.
S1925000008RevA2022-09-26. Service bulletin. SERVICE BRAKES, HYDRAULIC; FUEL SYSTEM, GASOLINE; EXTERIOR LIGHTING; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). (Revision A) Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P20E8 ? Reductant Pressure Too Low and/or P208B ? Reductant Pump 1 Control Performance Set.
S19250000082022-09-26. Service bulletin. EXTERIOR LIGHTING; FUEL SYSTEM, GASOLINE; SERVICE BRAKES, HYDRAULIC. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Codes (DTCs) P208B ? Reductant Pump 1 Control Performance, and/or P20E8 ? Reductant Pressure Too Low, Set.
S21080001702022-09-26. Service bulletin. PARKING BRAKE. Head unit button stuck DTC code B14DA-2A
Y092022-09-26. Service bulletin. SERVICE BRAKES; FORWARD COLLISION AVOIDANCE: DYNAMIC BRAKE SUPPORT/BRAKE ASSIST. Customer Satisfaction Notification Y09 Advanced Brake Assist
90045012022-09-26. Service bulletin. SERVICE BRAKES; FUEL SYSTEM, GASOLINE. PUMP, Washer, Windshield Windshield washer pump is inop or low pressure If customer comes in with the issue described above, please contact the following individuals prior to servicing the vehicle. FCA Redacted Content If no response in 15 minutes, proceed with repair.

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