Supplementary Restraints System -> Pedestrian Protection for Your Ford Explorer SUV Sixth Generation (2012-2020)

Pedestrian Protection - Hybrid Electric Vehicle (HEV)  
PEDESTRIAN ALERT SYSTEM  
Due to the quiet operation of hybrid and  
electric vehicles at low speeds, the system  
creates a subtle sound to alert pedestrians.  
The system is on when your vehicle is  
running and not in park (P). Some sound  
may be audible in the passenger  
compartment.  
54  
Explorer (CTW), enUSA, Edition date: 202007, Second-Printing