Is the buzzing sound when turning on the car key a normal phenomenon?

1 Answers
DiAsher
07/29/25 6:30pm
Is the buzzing sound when turning on the car key a normal phenomenon? The buzzing sound when turning on the car key is a normal phenomenon, which is the sound of the fuel pump working. When the key is turned to the ON position, the fuel pump starts working and takes a few seconds to build up sufficient fuel pressure to ensure the fuel injectors function properly and the engine starts smoothly. The correct method to start a car is: 1. Insert the key and hold it in the LOCK position for about 2 seconds; 2. Turn it to the ON position and wait for about 5 seconds for the car's computer to perform a self-check; 3. Turn the key to the START position to ignite, and release the key after the engine starts; 4. Let the car warm up for 30 seconds to about 1 minute; 5. Press the brake, shift to D gear, then release the handbrake and footbrake to start driving.
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