WenmarOpen by Wenmar Pro

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: Transmission and driveline are shown. Show all

Bulletins, newest first
S26210000042026-10-07. Service bulletin. POWER TRAIN. The Customer May Complain About a Popping Noise, Grinding Noise, or an Intermittent No Reverse or Forward Transmission Engagement. The Tech May Find Damaged and/or Worn Transmission Output Shaft Splines (850RE Transmission Only)
S2621000003 REV.A2026-03-18. Service bulletin. POWER TRAIN. The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV, 8HP75-LCV, 8HP90, 8HP95. Transmissions may exhibit the following diagnostic codes: P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
S26210000032026-03-05. Service bulletin. POWER TRAIN. Service transmission/check engine warning indicator for the 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV transmissions that have fault codes P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.
9100534 Rev 12025-05-19. Service bulletin. POWER TRAIN. Transmission "Transmission For transmission concerns related to DTCs P0733-00, P1DA8-00, and/or P1D92-00, a repair is available, and transmission replacement is NOT required. Please reference TSB 21-009-25 Rev. A, for details on D-clutch replacement. Please also note, visible ""glitter"" or debris in the pan and fluid color/condition/odor is NOT an indicator of transmission health and should not be used as the reason for unit replacement. Complete unit replacements instead of repairs for these DTCs may be subject to chargeback."
91005342025-03-28. Service bulletin. POWER TRAIN. "Transmission For transmission concerns related to DTCs P0733-00, P1DA8-00, and/or P1D92-00, a repair is available, and transmission replacement is NOT required. Please reference TSB 21-009-25 Rev. A, for details on D-clutch replacement. Please also note, fluid color/condition/odor is NOT an indicator of transmission health and should not be used as the reason for unit replacement. Complete unit replacements instead of repairs for these DTCs may be subject to chargeback."
1012322024-11-07. Service bulletin. POWER TRAIN. Plate - Planetary
S24030000022024-08-12. Service bulletin. POWER TRAIN. Griding/Gear Clash From Transfer Case When Going Into 4WD, Above 5 mph (8 kph).
91000102024-06-04. Service bulletin. POWER TRAIN. "Axle Assembly Do not replace the Axle for Axle Locker Sensor failure. The parts kit (SENSOR KIT, Axle: 68544629A$) must be used to repair the Axle Locker Sensor on JL/JT equipped with the M210 and M220 Tru-Lok axles (DSE). Internal axle components are serviceable. Complete axle assemblies should not be replaced unless necessary due to damaged housing. Over repairs may be subject to chargeback."
91003442024-06-04. Service bulletin. POWER TRAIN. "VALVE BODY & CONTROL UNIT Transmission Ensure clutch pressure check has been completed and documented prior to valve body replacement."
S23090000132024-01-16. Service bulletin. POWER TRAIN. Verifying Camshaft Diagnosis
S22210000032024-01-08. Service bulletin. POWER TRAIN. 8-Speed Transmission, Additional Transmission Fluid Leak Inspection/Repair Guidelines.
S22210000032023-10-30. Service bulletin. POWER TRAIN. 8-Speed Transmission, Additional Transmission Fluid Leak Inspection/Repair Guidelines.
S23250000062023-08-21. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Customer complaint may include a MIL-on or check engine lamp on condition.
91000102023-05-30. Service bulletin. POWER TRAIN; WHEELS. Axle Assembly Do not replace the Axle for Axle Locker Sensor failure. The parts kit (SENSOR KIT, Axle: 68544629A$) must be used to repair the Axle Locker Sensor on JL/JT equipped with the M210 and M220 Tru-Lok axles (DSE).
S18080001522023-04-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). CEL (Check Engine Lamp) Illuminates, Recent PCM Replace or Flash Update Performed, Diagnostic Trouble Codes (DTCs) P057B Brake Pedal Position Sensor Circuit Performance, P1572 Brake Pedal Stuck, C0042-54 Brake Pedal Missing Calibration
03003222023-01-17. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. Front or Rear Axle Sensor Kit
742442023-01-17. Service bulletin. POWER TRAIN. Warranty Bulletin D-20-23 Part Order Restriction Program - 48V Power Pack Unit (PPU) - Select 2018 - 2021 Jeep Wrangler (JL) and 2019 - 2021 RAM (DT) (Rev. A)
S22210000032023-01-09. Service bulletin. POWER TRAIN. 8-Speed Transmission, Additional Transmission Fluid Leak Inspection/Repair Guidelines.
S2003000001RevE2023-01-09. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. Noise From The Front Axle Area Over Bumps
S22070000022023-01-09. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:COOLER/RADIATOR:HOSES AND FITTINGS; UNKNOWN OR OTHER. Coolant leak
91000102023-01-09. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. Axle Assembly A parts kit (SENSOR KIT, Axle: 68544629A$) is available to repair the Axle Locker Sensor on JL/JT equipped with the M210 and M220 Tru-Lok axles (DSE). This parts kit must be used when only the Axle Locker Sensor fails. Do not replace the axle for sensor failure.
90037042023-01-09. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. Transmission Oil Pan, Heater (TMU), Tube or O-ring Applies to vehicles equipped with 8 speed transmissions only; if you have a leak that appears to be at the pan the use of proper leak detection is recommended. The fluid in the 8 speeds can be detected with a black light and there are aftermarket spray on leak detection materials to help ensure that the leak is properly diagnosed and not from another location such as cooler lines, heater tubes, or case porosity. Please note that the transmission pan gasket is available for many of the 8 speed applications FCA offers. Please review the available quick connect and transfer tube parts, as replacement of the TMU may not be required. If a TOC line connection is found to be the source, the quick connect may need replacement. If the leak source is coming from the connection of the TMU to the transmission, the transfer tube may need replacement. When parts are returned to the QEC the retaining clips (snap ring) for the quick disconnect fittings are missing. (This leaves a question as to whether the clips were missing from the assembly plant, or the technician removed them in order to make line removal easier.) Please return the clips with the transmission heater and note if they were not there to begin with. For any questions regarding transmission heater, contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
S2019000005RevB2022-12-19. Service bulletin. ELECTRICAL SYSTEM; STEERING:ELECTRIC POWER ASSIST SYSTEM; POWER TRAIN; STEERING:STEERING CONTROL MODULE; AIR BAGS; STEERING. U0131 Lost Communication With Power Steering Control Module A DTC Active Or Stored. EPS Light On.
18144222022-11-07. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more ofthe following DTCs: P0335 - Crankshaft Position Sensor Circuit. P0339 - Crankshaft Position Sensor Intermittent. P2C90 - Crankcase Ventilation System - Hose "A" Disconnected. P04FC - Crankcase Ventilation System Performance. P0456 EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. P061A - Level 2 Torque Performance. P0507 - Idle Speed Performance Higher Than Expected. Customers may also describe the following condition:Excessive fan noise when the A/C is on MAX output. Other enhancements included in this update: Electric vacuum pump (EVP) update. Fan noise reduction.
S2003000001RevE2022-10-31. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. Noise From The Front Axle Area Over Bumps

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