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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: Engine are shown. Show all

Bulletins, newest first
90042192020-04-27. Service bulletin. ENGINE AND ENGINE COOLING. 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.
90041712020-01-21. Service bulletin. ENGINE AND ENGINE COOLING. COVER, Cylinder Head, Left/Right Prior to replacing the cylinder head cover on ANY 3.6L Pentastar Upgrade Engine, verify that there are no steel dowel pins pressed into the cylinder head. If dowels are present in the cylinder head please remove carefully without touching/damaging the cylinder head sealing surface.
18-089-192019-12-16. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE. wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK
04-001-192019-10-28. Service bulletin. ENGINE. Pentastar Upgrade Oil Fill Level after an Oil Change This bulletin involves rechecking the oil fill level after filling the engine to the correct specifications. The customer may describe that after an oil change they check their oil fill level and it is showing overfilled on the oil dipstick.
09-002-19 REV A2019-07-15. Service bulletin. ENGINE. Diesel Low Pressure Exhaust Gas Recirculation (EGR) Valve Cleaning This bulletin involves cleaning the diesel low pressure EGR valve. Vehicles may display a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Code (DTC) has been set:P045E - EGR -B- Control Stuck Open.

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