Why is there still engine noise after the car is turned off?

[StJade]

There is still engine noise after the car is turned off because it is the sound of the electric fan working. Modern cars are designed with a delayed cooling function to prevent the engine or turbocharger from overheating. This function operates based on the water temperature measured by sensors and continues until the water temperature drops within the set range, which helps better protect the engine and turbocharger and extend their service life. Here are some precautions for parking a car: 1. Before parking: Clean and maintain the car before parking. 2. Location: Park the car in a garage or in a dry, shaded area as much as possible, away from trees and billboards. 3. Regular checks: Check the tire pressure regularly and inflate the tires if the pressure is insufficient. Also, pay attention to the aging condition of the tires.