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

Bulletins, newest first
S20230000202020-05-26. Service bulletin. BACK OVER PREVENTION; POWER TRAIN. Tick Noise From A-pillar Front Power Top Side Rail
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.
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.
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.
V882020-05-26. Service bulletin. VISIBILITY. Customer Satisfaction Notification V88 Rear Quarter Windows
V41 Rev. 72020-05-26. Service bulletin. STEERING; EQUIPMENT ADAPTIVE/MOBILITY; SUSPENSION. Customer Satisfaction Notification V41 Steering Damper
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.
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.
S20030000012020-05-26. Service bulletin. SUSPENSION. Noise From Front Axle Area Over Bumps
S20080000162020-05-26. Service bulletin. ELECTRICAL SYSTEM. 4WD Lamp On, Service 4WD System, DTC C147B-14 Front Axle Disconnect Sensor-Circuit Short To Ground Or Open
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.
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.
18-014-20 REV. A2020-05-18. Service bulletin. 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: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.
V882020-05-18. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. Customer Satisfaction Notification V88 Rear Quarter Windows
V41 Rev. 72020-05-18. Service bulletin. STEERING. Customer Satisfaction Notification V41 Steering Damper
S19080002082020-05-18. Service bulletin. EQUIPMENT. Satellite Radio Inoperative Radio Has Code B156B-13.
S18190000042020-05-18. Service bulletin. STRUCTURE. Shimmy Felt In Front End
S202300000172020-05-18. Service bulletin. VISIBILITY. Whistle Wind Noise From Windshield Area.
S20030000012020-05-18. Service bulletin. SUSPENSION. Noise From Front Axle Area Over Bumps
S20080000162020-05-18. Service bulletin. ELECTRICAL SYSTEM. 4WD Lamp On, Service 4WD System, DTC C147B-14 Front Axle Disconnect Sensor-Circuit Short To Ground Or Open
90042192020-05-18. 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.

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