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Why does the engine make a whining sound after the car is turned off?

1 Answers

Randy

07/30/25 8:03am

It is normal for the engine to make a whining sound after the car is turned off. Here are some precautions to take when turning off the car: 1. Do not remove external devices after turning off the car: There are too many external devices in the car, and often the phone continues to charge after the engine is turned off. This is similar to listening to music, as both are drawing power from the remaining battery. If the battery is drained, it may cause the vehicle to fail to start. 2. Frequently starting the vehicle after turning it off: Repeatedly performing this back-and-forth operation can damage the vehicle's engine and some equipment. 3. Start-stop: The purpose of start-stop technology is to reduce fuel consumption. When the vehicle is waiting at a traffic light, the engine will be turned off to reduce fuel consumption and achieve a more economical fuel condition.

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