Your vehicle’s alternator plays a critical role in keeping the electrical system running. It generates power to charge the battery and operate essential components like headlights, dashboard systems, and electrical accessories. When the alternator starts to fail, your car may still run for a short time on battery power, but eventually, the electrical system will shut down. Recognizing the symptoms early can help you avoid a breakdown. At Integrity Auto Care, we provide expert alternator replacement and auto electric repair in the greater South Beloit, IL area. Here are five common signs that your alternator may be on its way out.

Warning Light on the Dashboard

Most modern vehicles are equipped with a dashboard warning light that indicates alternator trouble. It may appear as a battery icon or as ALT or GEN. Ignoring this warning can result in a total loss of electrical power, which can be dangerous if you’re driving at night or in heavy traffic.

Malfunctioning Lights

One of the more apparent symptoms of a failing alternator is dim or flickering headlights and dashboard lights. Since the alternator is responsible for supplying consistent power, any drop in output can cause your lights to lose brightness. Issues with lights are a strong indication that the alternator is struggling to provide steady voltage.

Electrical Accessory Issues

A weak alternator often leads to unusual behavior from electrical systems. You might notice power windows moving slowly, your radio cutting out, or AC not working right. These malfunctions occur because the alternator isn’t generating enough power to meet the vehicle’s electrical demands. 

Dead or Weak Battery

A dead battery doesn’t always mean the battery itself is bad—it could be the alternator. If your alternator is not charging the battery properly, the battery will drain quickly. If you find yourself needing frequent jump-starts despite having a relatively new battery, the alternator could be the true culprit. A mechanic can test whether the alternator or the battery is at fault.

Strange Noises

Unusual noises can also signal alternator trouble. A failing alternator may produce grinding or whining sounds caused by worn-out bearings or issues with the belt system. These noises usually come from the engine bay and may grow louder as the problem worsens. 

Alternator Replacement & Auto Electric Repair in South Beloit, IL

When you need auto repair in South Beloit and the surrounding area, contact Integrity Auto Care at (815) 957-4159. At our local auto shop, we can expertly handle your vehicle’s repair and maintenance needs. Feel free to give us a call to schedule an appointment!