NHTSA Complaint #11669786 — 2022 JEEP WRANGLER

The vehicle experienced multiple serious fuel system failures, including a failed fuel injector and high-pressure fuel pump. After these components were replaced, it was confirmed that fuel was still entering the engine crankcase. At no point did the vehicle trigger a “Check Engine” light, oil dilution warning, low oil pressure alert, or any hybrid/electric powertrain. This represents a critical safety & reliability issue. Fuel dilution of engine oil can: severely degrade lubrication, increase crankcase pressure, and/or lead to internal engine failure or fire The lack of any warning or diagnostic code suggests either: a software calibration issue in the ECM/BCM that failed to detect the problem, a sensor failure, and/or a defect in the onboard diagnostic system itself. This could indicate a broader defect affecting the safety of the 4xe platform and request investigation. This failure delayed necessary service and put both vehicle and occupants at risk.