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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.

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By component

By trouble code

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

Bulletins, newest first
08-003-21 REV. A2021-12-13. Service bulletin. ELECTRICAL SYSTEM; STEERING. Improved Steering Feel This bulletin involves replacing the steering gear and updating the Electric Hydraulic Power Steering (EHPS) software, checking sales codes and performing vehicle reconfig, if required.Review and perform all steps necessary to complete the Repair Procedure. If any steps are missed, this may lead to undesired handling characteristics. The customer may describe one or more of the following: Steering wander. Vehicle has a lead/pull to the right or left.The lead/pull will be more noticeable in hot ambient temperatures. Steering feels like it has excessive play.This Technical Service Bulletin (TSB) repair will NOT correct a sustained steering shake, shimmy or vibration. Video aid has been developed for this issue. Refer to the detailed service procedures available in DealerConnect>Service Library under: Service Info>19 - Steering / Linkage / Damper, Steering /Removal and Installation.
08-093-212021-06-28. Service bulletin. ELECTRICAL SYSTEM. UAS, UAQ, UCS, UAV, UCV and UCQ Radio Over The Air Software Version Updates This bulletin provides information regarding the latest Flash Over The Air (FOTA) update and provides the service technician an overview of the steps a customer will need to take to complete the update. This is part of a two step FOTA update, first update brings software level to 22.61 and this second FOTA update will take the software to 22.64. National launch for this second step is May 24, 2021. Customers may experience one or more of the following:Navigation is incorrect or can not calculate route. GPS locations is inaccurate. Uconnect radio apps are all inoperable. Backup camera screen is blue (DT and KL). Green horizontal lines appear across screen (DT and KL). Anti-theft code request message. Backup camera screen is blank. Lines appear across screen. Radio control screen is blank or locked. Radio reset intermittently. Unable to adjust audio volume. Unable to switch modes between AM, FM, SAT or Media. In addition the following enhancements are included in this update:Carplay® connectivity improvement. Improvement to Bluetooth® phone pairing. Bluetooth devices unresponsive. Improved sound quality when using a Bluetooth phone.
24-007-212021-06-28. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ELECTRICAL SYSTEM; VISIBILITY. Flash: HVAC Diagnostic and System Updates This bulletin involves reprogramming the HVAC control module with the latest available software. The customer may notice one or more of the following:Intermittent change of smell or humidity level in vehicle. An intermittent blast of warm air when A/C is on. Intermittent increase of outside air through the HVAC system. In addition, the following software enhancement is also available:Improvements for customer concerns of 'cabin too warm', specifically in the mid ambient temperature range 4.5-15.5 °C (40-60 °F).
S2008000010 Rev.2021-06-28. Service bulletin. ELECTRICAL SYSTEM. Apple Carplay Inoperative Or Not Working, Phone Not Pairing, Carplay Lockup, Freeze or Audio Concerns
08-070-212021-05-24. Service bulletin. ELECTRICAL SYSTEM. ULQ Radio Enhancements This bulletin involves inspecting and if required, updating the radio software level to 34.2. If the software update is performed on a radio with software below 19.9, the radio could be damaged and will need to be replaced. Customers may experience one or more of the following:Lost radio presets. Radio display screen is black when the ignition is on. Radio may reset, turn itself off and then back on again. Park assist chime will continue to chime after the vehicle is turn off. Radio will display the incorrect speed limit in kph when approaching a road speed camera. In addition the following enhancements are included:Voice Recognition (VR) and Bluetooth® improvements. Improvements for Off-road pages.
18-036-212021-05-24. Service bulletin. FUEL SYSTEM, GASOLINE; BACK OVER PREVENTION; ELECTRICAL SYSTEM; EXTERIOR LIGHTING; SERVICE BRAKES. 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:P02EE - Cylinder 1 Injector Circuit Performance(APAC, EMEA and LATAM Only). P02EF - Cylinder 2 Injector Circuit Performance(APAC, EMEA and LATAM Only). P02F0 - Cylinder 3 Injector Circuit Performance(APAC, EMEA and LATAM Only). P02F1 - Cylinder 4 Injector Circuit Performance(APAC, EMEA and LATAM Only). 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. The following software enhancements are also included in this update:Electric Vacuum Pump (EVP) update. Fan noise reduction. Low Speed Pre Ignition (LSPI) update.
S2019000005 Rev.2021-03-15. Service bulletin. STEERING; ELECTRICAL SYSTEM; EQUIPMENT. U0131 Lost Communication With Power Steering Control Module A DTC Active. EPS Light On.
08-074-20 REV. F2021-03-01. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; STEERING. Improved Steering Feel This bulletin involves replacing the steering gear and updating the Electric Hydraulic Power Steering (EHPS) software, checking sales codes and performing vehicle reconfig, if required.Review and perform all steps necessary to complete the Repair Procedure. If any steps are missed this may lead to undesired handling characteristics. The customer may describe one or more of the following:Steering wander. Vehicle has a lead/pull to the right or left.The lead/pull will be more noticeable in hot ambient temperatures. Steering feels like it has excessive play.This Technical Service Bulletin (TSB) repair will NOT correct a sustained steering shake, shimmy or vibration. Video aid has been developed for this issue. Refer to the detailed service procedures available in DealerConnect>Service Library under: Service Info>19 - Steering / Linkage / Damper, Steering /Removal and Installation.
708012021-03-01. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Warranty Bulletin D-20-23 Part Order Restiction Program - 48V Power Pack Unit (PPU) - Select 2018-2020 Jeep Wrangler (JL) and 2019-2021 RAM (DT)
S1908000083 Rev.2021-03-01. Service bulletin. ENGINE; ELECTRICAL SYSTEM. Check Engine Light Illuminated, Stop Start Function Inoperative
08-017-212021-02-16. Service bulletin. ELECTRICAL SYSTEM; BACK OVER PREVENTION. Radio and Back-up Camera Enhancements This bulletin involves updating the radio software level to 1848.34. Customers may experience one or more of the following: Radio display screen flickers. Clock loses 6 seconds per day (JL with 5 inch screen). Green horizontal lines on back up display, in reverse (If this is the customer concern use camera LOP 18-60-02-Y7, on JL vehicles only). Ghost Touch, features, modes and App?s changing, without drivers input. Speaker pop noise when using Bluetooth® device. When vehicle is first started the radio will reset and the time display shows 12:00. Audio distortion and volume fluctuation. Blank rear camera image in reverse (If this is the customer concern use camera LOP 18-60-02-Y7 on JL vehicles only). Audio cutting in and out during memory recall. Ring tone too loud. AM/FM volume fluctuates. While in CarPlay® or AndroidAuto,® Google® maps showing wrong location. Phone disconnected after first call. Black screen or White screen with vertical lines. PIN clear and volume locked while KeySense is used. Audio static while in SXM/SAT modes. Echo heard during Bluetooth phone calls. The radio is locked up. The radio remains on after ignition has been turned off. The radio resets. The radio screen turns black. The radio screen shows messages ?Software Update? or ?Reinsert USB Device? and displays that screen in a continuous loop.
08-074-20 REV. E2020-12-28. Service bulletin. ELECTRICAL SYSTEM; STEERING; EQUIPMENT ADAPTIVE/MOBILITY. Improved Steering Feel This bulletin involves replacing the steering gear and updating the Electric Hydraulic Power Steering (EHPS) software, checking sales codes and performing vehicle reconfig, if required.Review and perform all steps necessary to complete the Repair Procedure. If any steps are missed this may lead to undesired handling characteristics. The customer may describe one or more of the following: Steering wander. Vehicle has a lead/pull to the right or left. The lead/pull will be more noticeable in hot ambient temperatures. Steering feels like it has excessive play.This Technical Service Bulletin (TSB) repair will NOT correct a sustained steering shake, shimmy or vibration. Video aid has been developed for this issue. Refer to the detailed service procedures available in DealerConnect>Service Library under: Service Info>19 - Steering/Linkage/Damper, Steering/Removal and Installation.
08-074-20 REV. D2020-12-28. Service bulletin. STEERING; EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. Improved Steering Feel This bulletin involves replacing the steering gear and updating the Electric Hydraulic Power Steering (EHPS) software, checking sales codes and performing vehicle reconfig, if required.Review and perform all step necessary to complete the Repair Procedure. If any steps are missed this may lead to undesired handling characteristics. The customer may describe one or more of the following:Steering wander. Vehicle has a lead/pull to the right or left.The lead/pull will be more noticeable in hot ambient temperatures. Steering feels like it has excess play.This Technical Service Bulletin (TSB) repair will NOT correct a sustained steering shake, shimmy or vibration. Video aid has been developed for this issue. Refer to the detailed service procedures available in DealerConnect>Service Library under: Service Info>19 - Steering / Linkage / Damper, Steering /Removal and Installation.
S1908000102 Rev.2020-12-28. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. (Rev. A) Audio Mute On All Sources Except AM
S20080001722020-12-28. Service bulletin. ELECTRICAL SYSTEM. Radio Screen Flickering When Using Apple CarPlay Or Android Auto.
S20180000122020-12-28. Service bulletin. ELECTRICAL SYSTEM; ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Check engine lamp on. Fault code P0244- TURBOCHARGER/SUPERCHARGER WASTEGATE SOLENOID "A" RANGE/PERFORMANCE is set in the Powertrain Control Module (PCM a.k.a. ECM) after the turbocharger assembly has been replaced.
S1908000028 Rev.2020-12-28. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. (Rev. A) Power Inverter Load Ratings
08-074-20 REV. E2020-12-21. Service bulletin. ELECTRICAL SYSTEM; STEERING; EQUIPMENT. Improved Steering Feel This bulletin involves replacing the steering gear and updating the Electric Hydraulic Power Steering (EHPS) software, checking sales codes and performing vehicle reconfig, if required.Review and perform all steps necessary to complete the Repair Procedure. If any steps are missed this may lead to undesired handling characteristics. The customer may describe one or more of the following:Steering wander. Vehicle has a lead/pull to the right or left.The lead/pull will be more noticeable in hot ambient temperatures. Steering feels like it has excessive play.This Technical Service Bulletin (TSB) repair will NOT correct a sustained steering shake, shimmy or vibration. Video aid has been developed for this issue. Refer to the detailed service procedures available in DealerConnect>Service Library under: Service Info>19 - Steering / Linkage / Damper, Steering /Removal and Installation.
08-074-20 REV. D2020-12-21. Service bulletin. STEERING; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. Improved Steering Feel This bulletin involves replacing the steering gear and updating the Electric Hydraulic Power Steering (EHPS) software, checking sales codes and performing vehicle reconfig, if required.Review and perform all step necessary to complete the Repair Procedure. If any steps are missed this may lead to undesired handling characteristics. The customer may describe one or more of the following:Steering wander. Vehicle has a lead/pull to the right or left.The lead/pull will be more noticeable in hot ambient temperatures. Steering feels like it has excess play.This Technical Service Bulletin (TSB) repair will NOT correct a sustained steering shake, shimmy or vibration. Video aid has been developed for this issue. Refer to the detailed service procedures available in DealerConnect>Service Library under: Service Info>19 - Steering / Linkage / Damper, Steering /Removal and Installation.
S20080001722020-12-21. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Radio Screen Flickering When Using Apple CarPlay Or Android Auto.
S20180000122020-12-21. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Check engine lamp on. Fault code P0244- TURBOCHARGER/SUPERCHARGER WASTEGATE SOLENOID "A" RANGE/PERFORMANCE is set in the Powertrain Control Module (PCM a.k.a. ECM) after the turbocharger assembly has been replaced.
S1908000028 Rev.2020-12-21. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. (Rev. A) Power Inverter Load Ratings
18-103-202020-11-30. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with thelatest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs).P0369 - Camshaft Position Sensor Intermittent - Bank 1 Sensor 2. P0335 - Crankshaft Position Sensor Circuit. P0339 - Crankshaft Position Sensor Intermittent. P0344 - Camshaft Position Sensor Intermittent. P0390 - Camshaft Position Sensor Circuit - Bank 2 Sensor 2. P0340 - Camshaft Position Sensor Circuit - Bank 1 Sensor 1. P0365 - Camshaft Position Sensor Circuit - Bank 1 Sensor 2. P0345 - Camshaft Position Sensor Circuit - Bank 2 Sensor 1. P0349 - Camshaft Position Sensor Intermittent - Bank 2 Sensor 1. P0394 - Camshaft Position Sensor Intermittent - Bank 2 Sensor 2. Customers may experience the following:Hard launch and an increase in engine RPM, when shifting from park to drive.(automatic transmission vehicles only). Engine RPM increase at startup and/or between shifts (manual transmission vehicles only).
08-074-20 REV. C2020-11-30. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; STEERING. Improved Steering Feel This bulletin involves replacing the steering gear and updating the Electric Hydraulic Power Steering (EHPS) software, checking sales codes and performing vehicle reconfig, if required.Review and perform all step necessary to complete the Repair Procedure. If any steps are missed this may lead to undesired handling characteristics. The customer may describe one or more of the following:Steering wander. Vehicle has a lead/pull to the right or left.The lead/pull will be more noticeable in hot ambient temperatures. Steering feels like it has excess play.This Technical Service Bulletin (TSB) repair will NOT correct a sustained steering shake, shimmy or vibration. Video aid has been developed for this issue. Refer to the detailed service procedures available in DealerConnect>Service Library under: Service Info>19 - Steering / Linkage / Damper, Steering /Removal and Installation.
08-098-202020-11-30. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. UCQ 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.

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