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Service bulletins for the 2018 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.

716 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
08-091-202020-11-30. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE. UAQ Radio Enhancements This bulletin has been canceled. The software on the Uconnect site will be turned off. Any USB flash drives that has this software on it must be deleted. If the radio is updated with 28.3 software it may cause more issues with the radio and dissatisfy the customer. Enhanced software should be available the first quarter of 2021.
S20080001562020-11-30. Service bulletin. ELECTRICAL SYSTEM:INTERIOR LAMPS/BULBS; ENGINE. CEL (Check Engine Lamp) On, Intermittent Hard Starting, Rough Idle
S1908000046 Rev.2020-11-30. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; EQUIPMENT. Audio Cuts Out In Two Second Intervals On Any Mode Or No Audio On Any Mode
90043092020-11-30. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; STEERING. GEAR, Power Steering When installing this gear refer to published service information. The power steering pump software must be updated, and vehicle configuration updated to ensure proper steering feel.
S20180000102020-10-26. Service bulletin. ELECTRICAL SYSTEM. Malfunction Indicator Lamp (MIL) Illuminated, Diagnostic Trouble Code (DTC) P2C90 - Crankcase Ventilation System - Hose "A" Disconnected or P04FC -Crankcase Ventilation Performance
S20080001362020-10-26. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM. Passenger Air Bag Disable Lamp On Flashing When PADL Switch Is Connected
S20080001302020-09-28. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Radio UConnect GPS Based Trip Computer Missing
S1908000046 Rev.2020-09-28. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. (Revision A) Audio Cuts Out In Two Second Intervals On Any Mode Or No Audio On Any Mode
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
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
18-014-20 REV. B2020-07-27. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; 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 that one or more of the following DTCs have been set:P2C90 - Crankcase Ventilation System - Hose "A" Disconnected(APAC, EMEA and LATAM Only). P04FC - Crankcase Ventilation System Performance(APAC, EMEA and LATAM Only). P2453 - Particulate Filter Pressure Sensor "A" Circuit Range/Performance(APAC and EMEA only equipped with Gas Particulate Filter (GPF). P245F - Particulate Filter Pressure Sensor "B" Circuit Range/Performance(APAC and EMEA only equipped with Gas Particulate Filter (GPF). P0456 - EVAP System Small Leak. If DTC P0456 is present use wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. P0171 - Fuel System 1/1 Lean(LATAM Only). P0172 - Fuel System 1/1 Rich(LATAM Only). P0128 - Thermostat Rationality(Sales Codes NA1 with NBQ or NB6 Only - APAC and EMEA Only). P050B - Cold Start Ignition Timing Performance(Sales Codes NA1 with NBQ or NB6 Only - APAC and EMEA Only). Customers may comment on one or more of the following:Excessive fan noise when the A/C is on MAX output. Rough idle at engine start up in colder ambient temperatures. Software enhancements also included in this update:Electric Vacuum Pump (EVP) update. Fan noise reduction. Low Speed Pre Ignition (LSPI) update.
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
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
S19080000482020-06-22. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Chime Stuck On In The Audio System
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
08-049-202020-05-26. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Charging System, Battery Diagnostic Tools and Warranty This information only bulletin discusses using the correct test equipment for testing batteries and charging systems, and also warranty reimbursement when battery replacements are necessary.
S18080001522020-05-26. Service bulletin. ELECTRICAL SYSTEM. CEL (Check Engine Lamp) Illuminates, Recent PCM Replace Or Flash Update Performed, DTC P057B Brake Pedal Position Sensor Circuit Performance
S19080001022020-05-26. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Audio Mute On All Sources Except AM
18-014-20 REV. A2020-05-26. Service bulletin. FUEL SYSTEM, GASOLINE; EXTERIOR LIGHTING; ELECTRICAL SYSTEM; BACK OVER PREVENTION. 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 that one or more of the following DTCs have been set:P0456 - EVAP System Small Leak.If DTC P0456 is present use wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. P0171 - Fuel System 1/1 Lean(LATAM Only). P0172 - Fuel System 1/1 Rich(LATAM Only). P0128 - Thermostat Rationality(APAC&EMEA with Sales Codes NA1 with NBQ or NB6 Only). P050B - Cold Start Ignition Timing Performance(APAC&EMEA with Sales Codes NA1 with NBQ or NB6 Only). Customers may experience:Excessive fan noise when the A/C is on MAX output. Rough idle at engine start up in colder ambient emperatures. Software enhancements include:Electric Vacuum Pump (EVP) update. Fan noise reduction. Low Speed Pre Ignition (LSPI) update.

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