What Causes Abnormal Noises When Starting the Car?

[Norma]

Abnormal noises when starting the car can be caused by the following reasons: 1. Abnormal noises caused by rusted brake discs/pads: The brake disc and brake pad may stick together due to rust, causing abnormal noises. This usually occurs after driving in rainy weather or after the car has been parked for an extended period. When the rusted brake disc and pad stick together, abnormal noises may occur upon restarting the car. This issue can be resolved by applying butter or specialized lubricant to the connection point between the brake pad and brake caliper. 2. Excessive wear of the brake disc and brake pad: Both the brake disc and brake pad are high-wear components. Every time the brakes are applied, these two parts experience friction, which naturally leads to wear over time. When the wear becomes excessive, abnormal noises will occur. Therefore, regular inspection and replacement are necessary. Typically, brake pads should be replaced every 60,000-80,000 kilometers, while brake discs should be replaced every 100,000-120,000 kilometers.