The contact owns a 2017 Ford Escape. The contact stated while driving at undisclosed speeds, the 9-1-1 Assistance and seat belt warning alerts activated. The contact stated that the key fob sensor intermittently failed to recognize the key fob inside the vehicle with the message ‘No Key Detected’ displayed on the instrument panel. The vehicle was taken to a dealer however, the failure was not duplicated. The contact stated that during cold starts, the vehicle hesitated, and the RPM became elevated. There was no warning light illuminated. In addition, the contact stated while driving 40 MPH, the vehicle hesitated while depressing the accelerator pedal. The contact stated that the check engine warning light was then illuminated. The vehicle was taken to Eby Ford (2714 Elkhart Rd, Goshen, IN 46526) where the vehicle was diagnosed with coolant intrusion into engine and cylinder #4. The contact stated that the engine relay was replaced after the vehicle failed to start. The manufacturer was notified of the failure and the contact was informed that the VIN was not under recall. The vehicle was not repaired. The failure mileage was unknown.