I am filing this complaint to report a repeated safety-related defect involving the engine thermostat in my 2020 Dodge Journey and to formally request an investigation by the NHTSA Office of Defects Investigation (ODI). The thermostat in this vehicle has failed twice, despite being replaced after the initial failure. The recurrence of the same failure in a critical engine temperature control component indicates a potential design or manufacturing defect, not normal wear or improper maintenance. Each thermostat...
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failure resulted in abnormal engine temperature behavior and warning indicators. Thermostat failure directly compromises the engine cooling system and creates a risk of overheating, sudden engine shutdown, loss of propulsion, and engine damage. These conditions present a clear safety hazard, particularly if failure occurs at highway speeds, in traffic, or during extreme temperatures. A thermostat is a non-consumable, safety-critical component that should not require multiple replacements in a vehicle of this age and mileage. The fact that the failure occurred again after repair suggests that the defect may be systemic and potentially affects other 2020 Dodge Journey vehicles equipped with the same thermostat design or housing. This issue meets NHTSA's criteria for investigation due to: Repeat failure of the same safety-critical component Risk of loss of power or vehicle disablement Potential for engine overheating and sudden breakdown Evidence suggesting a broader defect pattern I am requesting that NHTSA: Open a defect investigation into thermostat failures in the 2020 Dodge Journey Require corrective action by the manufacturer if a defect trend is identified, including a recall, safety service campaign, or extended warranty This complaint is submitted in the interest of preventing further incidents and protecting vehicle occupants and other roadway users.