
Generator belt needs to be replaced when the following signs appear: Abnormal noise from the generator belt: This situation is caused by the engine belt being too loose or the installation position being uncertain. It is best to check promptly if a slipping or grinding sound is heard. Cracks, fissures, and peeling of the generator belt: This condition may result from incorrect installation leading to uneven force distribution, corrosion, or simply prolonged use causing the engine belt to age and harden. Excessive usage time: Generally, the service life of an engine belt is 2 years or 60,000 kilometers. Therefore, it is necessary to replace it when the specified usage period is reached. Never wait until it breaks to replace it, as this can easily lead to dangerous situations.

Last month, my car developed a squeaking noise, especially noticeable during cold starts. Later, I discovered it was a sign of wear on the alternator belt. As an experienced car owner, I know this belt drives the alternator and sometimes the water pump. Upon inspection, I noticed fine cracks and slack in the belt. If not replaced promptly, the noise would grow louder, and the belt could snap, causing the alternator to stop working, draining the battery, and leading to a dangerous stall. I quickly took it to the repair shop for a replacement, which cost around 200 to 300 RMB. Now, it's much quieter. I recommend regularly lifting the hood to check the belt for cracks or oil contamination. If you hear any noise, take action immediately—don’t wait until you’re stranded on the road to regret it.

When I first learned to drive, I knew nothing about car troubles. Later, I learned that there are warning signs when the alternator belt has issues. For example, hearing a sharp screeching sound when starting or accelerating, or the battery warning light on the dashboard suddenly turning on—these could indicate belt damage. I found that a simple check can be done: after parking, inspect the belt for obvious cracks, wear, or excessive looseness. Ignoring these signs is dangerous; if the belt breaks, the alternator stops working, the battery drains quickly, and the car might suddenly stall. So now I’ve developed a habit of glancing at the belt every few months or before long trips to avoid delays and costly repairs. Maintenance is all about prevention.

When the alternator belt ages, there are usually several warning signs: Common ones include abnormal noises like squeaking, especially during initial startup. Upon inspection, you may notice surface cracks, edge wear on the belt, and sometimes powdery debris falling off. Manually pressing the belt to test its tension—if it's too loose—is also a signal. Ignoring these precursors may lead to belt breakage, causing the alternator to stop generating electricity, battery depletion, and ultimately leaving the car stranded on the road, requiring a tow. It's recommended to inspect the belt every 50,000 kilometers or three years, and replace it at the first sign of abnormality. The cost is low but prevents bigger troubles.

Safety issues are the biggest concern when driving, and the warning signs of generator belt failure must be taken seriously. Initially, there may be squeaking or grinding noises, and opening the hood may reveal cracks in the belt. Once it fails, the generator stops, and the battery drains rapidly, potentially causing the car to stall while driving, especially on highways, which poses a high risk. I remember my neighbor's car broke down in a tunnel like this, almost causing an accident. Therefore, upon hearing unusual noises or noticing damage, you should immediately stop to inspect and replace the belt promptly to ensure driving safety. Don't risk turning a minor issue into a major hazard during your trip.


