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Service bulletins for the 2020 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.

1020 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
90042492020-05-26. Service bulletin. SEATS; VEHICLE SPEED CONTROL. FRAME, Rear Seat Back, And Cushion Assembly For all 2-door vehicles, if rear seat exhibits one of the following conditions, please call FCA redacted Content prior to repair. Rear Seat Does Not Fold Cannot Remove Seat Seat Cables Stretched/Broken Seat Latch Seized Rear Seat release not working If no answer, please leave a message with dealer contact and VIN information. If no response in 15 minutes, proceed with repair.
90041662020-05-26. Service bulletin. FUEL SYSTEM, GASOLINE; STEERING. DAMPER, Steering Additional service procedure steps before replacing the steering damper: Before istalling the steering damper to the vehicle, it is important to prime the new damper by 5 continuous compression ? extension stroke cycles by hand, each cycle consists of a full compression and a full extension stroke, without stops as fast as possible. Use large screwdrivers inserted in the bushings to aid in purging. This will allow you to stand on the lower screwdriver to hold the damper stationary and pump the rod end easier. Perform purge before installing NOTE: Hand purge to be completed in a vertical position with the base cup sticker end down toward the ground and the rod side facing up.See CSN V41 for detail procedure.
09-005-202020-05-26. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL. 3.0L Oil Filter Cartridge Identification Differences And Oil Filter Element Servicing Procedure This bulletin outlines the correct procedure for changing an oil filter on a 3.0L diesel to prevent engine damage. The bulletin also highlights the design differences in the oil filter cartridges used in the GEN-2 and GEN-3 3.0L diesel. As well as potential issues that can arise should the incorrect filter be used in each application.
07-001-202020-05-26. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. Water Pump Inlet Tube Fastener Torque This bulletin involves checking the torque on the water pump inlet tube fasteners to possibly eliminate coolant leak at this location. The customer may describe either a coolant leak or the coolant level is low.
21-024-202020-05-26. Service bulletin. BACK OVER PREVENTION; ELECTRICAL SYSTEM; POWER TRAIN. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience a loud whistle noise upon engine start up.
21-022-202020-05-26. Service bulletin. ELECTRICAL SYSTEM; BACK OVER PREVENTION; POWER TRAIN. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience a loud whistle noise upon engine start up.
21-023-202020-05-26. Service bulletin. BACK OVER PREVENTION; ELECTRICAL SYSTEM; POWER TRAIN. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience a loud whistle noise upon engine start up.
21-017-202020-05-26. Service bulletin. POWER TRAIN; BACK OVER PREVENTION; ELECTRICAL SYSTEM. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience a loud whistle noise upon engine start up.
V882020-05-26. Service bulletin. VISIBILITY. Customer Satisfaction Notification V88 Rear Quarter Windows
D-19-20 Rev. B2020-05-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL. Fast Feedback Program - 3.0L Diesel Engine and Components - 2020 Ram 1500 (DT) and 2020 Jeep Wrangler (JL) - All Models (Rev. B)
D-20-02 Rev. A2020-05-26. Service bulletin. EQUIPMENT. DIPAP Requirements - Addition of Jeep Wrangler (JL/JK) and Jeep Gladiator (JT) Hard Top and Targa Top Panel Replacements - All Dealers (Rev. A)
S19080002082020-05-26. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. Satellite Radio Inoperative Radio Has Code B156B-13.
S20240000022020-05-26. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. WiTECH HVAC Actuator Calibration Test Reserved Tab.
S20180000012020-05-26. Service bulletin. ENGINE AND ENGINE COOLING. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P26FB ? EGR Cooler Bypass Control Stuck Closed Bank 1 Set.
S20080000312020-05-26. Service bulletin. ELECTRICAL SYSTEM. Low Charging Voltage Displayed On Cluster
S18190000042020-05-26. Service bulletin. STEERING. Shimmy Felt In Front End
S202300000172020-05-26. Service bulletin. VISIBILITY. Whistle Wind Noise From Windshield Area.
S20250000012020-05-26. Service bulletin. ELECTRICAL SYSTEM. Malfunction Indicator Lamp Illumination (MIL). Diagnostic Trouble Code (DTC) P203E ? Reductant Level Sensor 1 Circuit Intermittent-Erratic Set.
S20250000022020-05-26. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Customer complaint includes check engine/MIL light on. Upon further inspection, fault codes will be found in the powertrain control module (PCM) for P0441, P0443 or P0449. Fault codes may be either active or stored.
S20030000012020-05-26. Service bulletin. SUSPENSION. Noise From Front Axle Area Over Bumps
S20180000022020-05-26. Service bulletin. EXTERIOR LIGHTING. Malfunction Indicator Lamp (MIL) Illuminated. Fuel Injection Quantity Diagnostic Trouble Codes (DTCs) Set.
90042192020-05-26. Service bulletin. EQUIPMENT. PUMP, Water (Water Pump Inlet Tube) For concern of leak at water pump, please check and re-torque water pump inlet tube fasteners as described in Service Bulletin 07-001-20 before replacing the water pump.
09-005-202020-05-18. Service bulletin. FUEL SYSTEM, DIESEL; FUEL SYSTEM, GASOLINE. 3.0L Oil Filter Cartridge Identification Differences And Oil Filter Element Servicing Procedure This bulletin outlines the correct procedure for changing an oil filter on a 3.0L diesel to prevent engine damage. The bulletin also highlights the design differences in the oil filter cartridges used in the GEN-2 and GEN-3 3.0L diesel. As well as potential issues that can arise should the incorrect filter be used in each application.
07-001-202020-05-18. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. Water Pump Inlet Tube Fastener Torque This bulletin involves checking the torque on the water pump inlet tube fasteners to possibly eliminate coolant leak at this location. The customer may describe either a coolant leak or the coolant level is low.
21-024-202020-05-18. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE; BACK OVER PREVENTION. Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience a loud whistle noise upon engine start up.

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