What Causes the Buzzing Sound Inside the Car?

[LeoAnn]

During driving, the causes of abnormal noises inside the car include sounds from the glove box and transmission mechanism. Specific introductions are as follows: Noises from the Glove Box: These can be caused by scattered items inside the glove box or loose wiring from aftermarket electronic devices. Cluttered items in storage compartments or the glove box, even the nose pads of sunglasses in the glasses case, can produce sounds. Noises from the Transmission Mechanism: These are mainly related to the transmission mechanism, such as tires, CV joints, etc. The cause can be identified by lifting the car at a repair shop. Whether at low or high speeds, the abnormal noise persists, increasing in frequency with speed. If the motor pulley has been replaced or if it hasn't been changed after 80,000 kilometers, the issue is likely due to the pulley. It's necessary to visit a repair shop to check the motor pulley, as it may have aged or a newly replaced one might be substandard.