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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

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

Bulletins, newest first
S20180000092020-09-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ELECTRICAL SYSTEM. Malfunction Indicator Lamp (MIL) Illuminated. Diagnostic Trouble Codes (DTCs) P00AF ? Turbocharger Boost Control Module ?A? Performance and/or P226C ? Turbocharger Boost Control Module ?A? Slow Response.
S20080001132020-09-28. Service bulletin. ENGINE; ELECTRICAL SYSTEM. No Start Intermittently, Vehicle Requires Multiple Keyless Push To Start Attempts To Start Vehicle
G-07.18.20192020-09-19. Service bulletin. ELECTRICAL SYSTEM. 2018+ JL BATTERY DISCONNECT FOR BOTH BATTERIES
S20080001032020-08-24. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. No Start, High Current Fuse Array (HCFA) Location And Testing
S20080000942020-08-24. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Uconnect Market Place APP Fatal Error Message
S20080000102020-08-24. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM. Apple Carplay Inoperative Or Not Working, Phone Not Pairing, Carplay Lockup, Freeze or Audio Concerns
S20250000062020-08-24. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM. Malfunction Indicator Lamp (MIL) Illumination. Diagnostic Trouble Code (DTC) P206D ? Reductant Quality Sensor Circuit High Set.
S20080000972020-08-24. Service bulletin. ELECTRICAL SYSTEM. ESC Cluster Warning Lamp On, DTC B1783-01 Stop Lamp Control Circuit General Failure
90042722020-08-24. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. RECEIVER, Hub (RF Hub) For reports of vehicle unable to key on or instances of RFHM shows as unresponsive in WiTech topology diagnostically, please contact FCA Redacted Content prior to replacing this part. If no response in 15 minutes, proceed with repair.
18-012-20 REV. B2020-07-27. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 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 one of the followingDTCs have been set:P2C90 - Crankcase Ventilation System - Hose "A" Disconnected. P0607 - ECU Internal Performance. P0506 - Idle Speed Performance Lower Than Expected.
18-012-20 REV. A2020-07-27. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). 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 one of the followingDTCs have been set: P0607 - ECU Internal Performance. P0506 - Idle Speed Performance Lower Than Expected.
18-013-20 REV. A2020-07-27. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); 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 one or more ofthe following DTCs have been set: P0607 - ECU Internal Performance. P0506 - Idle Speed Performance Lower Than Expected
08-003-20 REV. A2020-07-27. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT:ELECTRICAL. Flash: Driver Assistance System Module (DASM) Enhancements This bulletin involves reprogramming the DASM with the latest software available. The customer may describe the following:Instrument Panel Cluster (IPC) warnings for the FCW informing the driver to apply the brakes. Software Enhancement (06/02/2020)? Allows customers to turn off the FCW indefinitely, rather than resetting to ?ON? at each key cycle, (Japan and South Korea only). This is an incremental change, which builds upon the 11/22/2019 changes for the symptom described below. The (11/22/2019) release provided limited system improvements to enhance the FCW system hazard detection which may reduce nuisance actions and warnings from incorrectly identified structures and hazards, which can in rare circumstances cause an unwarranted brake event.
S20080000942020-07-27. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Uconnect Market Place APP Fatal Error Message
S20080000932020-07-27. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:WARNING; ELECTRICAL SYSTEM:ADAS:BLINDSPOT:WARNING:LAMP. Blind Spot Or Park Assist Warnings, False Activation
S20080000842020-07-27. Service bulletin. ELECTRICAL SYSTEM. Cluster Service 4WD Light On
S19080001022020-07-27. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Audio Mute On All Sources Except AM
S18210000062020-07-27. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; TIRES. Oversized Tire Calibration For Customized Jeep Wrangler, Gladiator, 2019 Ram Heavy Duty DJ, MVP Update Required, MVP Hotline
08-058-202020-06-22. Service bulletin. ELECTRICAL SYSTEM. Flash: Security Gateway Module (SGW) Enhancements This bulletin involves reprogramming the SGW with the latest available software. The SGW in these vehicles was flashed with a calibration intended to be paired with a different software version.No symptoms will be observable to the customer. Diagnostic services will still work correctly (e.g. vehicle scan, DTC read, etc.). However, the vehicle security firewalls will be lacking.DTCs may be present. The technician will receive no notification indicating there is any problem with the SGW.
08-055-202020-06-22. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Flash: Body Control Module (BCM) Enhancements This bulletin involves reprogramming the BCM with the latest available software. Customer will notice that the ambient temperature display in the cluster and in the radio, is showing all dashes, with no temperature display read out.
09-007-202020-06-22. Service bulletin. ENGINE; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR; EQUIPMENT. Inspect Hydraulic Belt Tensioner This bulletin involves inspecting the Julian date on the hydraulic belt tensioner for possible replacement. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Codes (DTCs) have been set:P2BA3-00 - Starter/Generator Mechanical Performance. P0A92-00 -Hybrid Generator Performance. Customers may also experience the following:Dead battery. The accessory drive belt may be slipping or belt noise.
S20080000732020-06-22. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE. VP4 Panasonic Radio USB Software Update Error Codes And Guidelines For Recovery
S20080000332020-06-22. Service bulletin. ENGINE; ELECTRICAL SYSTEM:WIRING. MIL Lamp On, DTC P0325 - Knock Sensor 1 Circuit
S19080001662020-06-22. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Stop Start Inoperative, Auxiliary Battery Low Requires Charging, No Start
S18080002842020-06-22. Service bulletin. LATCHES/LOCKS/LINKAGES:DOORS:LATCH; ELECTRICAL SYSTEM; EQUIPMENT. Blind Spot Alert Temporarily Unavailable Is Displayed On The EVIC. Power Mirrors And/Or Power Door Locks Do Not Function

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