A healthy alternator keeps the battery charged and powers electrical systems while the engine is running. When the alternator starts to fail, it can cause a range of issues that may leave you stranded if not addressed promptly. Recognizing the warning signs of alternator trouble can help you avoid a breakdown. At Auto-Lab Complete Car Care Center, our local mechanics provide expert alternator replacement and auto electric repair in the greater Plymouth, MI area. Here are five signs that your alternator may be failing.

Weak or Dead Battery

If the alternator is not properly charging the battery while the engine is running, the battery will drain quickly and struggle to start the car. If you frequently need to jump-start your vehicle, but the battery is relatively new, the alternator could be the underlying issue. A professional battery and charging system test can confirm whether the alternator is to blame.

Dim or Flickering Lights

One of the most common signs of alternator trouble is dim or flickering headlights and interior lights. Since the alternator supplies power to the electrical system, a failing alternator may struggle to keep up with the demand, leading to these symptoms.

Strange Noises

Unusual sounds coming from your engine bay could be a sign of alternator trouble. A failing alternator may produce a whining or grinding noise due to a belt problem or worn-out bearings. The alternator relies on a belt to function, and if the belt becomes loose or misaligned, it can lead to strange noises. 

Electrical Accessory Malfunctions

Since the alternator powers the car’s electrical system, a failing alternator can cause various electronic components to act erratically. You may notice power windows and seats moving slower than usual, or the radio cutting in and out. If multiple electrical issues occur simultaneously, it’s a strong indication that your alternator is not supplying enough power.

Warning Light on the Dashboard

Many vehicles have a warning light on the dashboard that indicates alternator or charging system problems. This light may appear as a battery icon, ALT, or GEN and is often one of the first signs of trouble. Ignoring this warning can result in a drained battery and a stalled vehicle, so it’s important to have your charging system inspected immediately.

Alternator Replacement & Auto Electric Repair in Plymouth, MI

For top-quality auto repair in Plymouth, MI and the surrounding area, contact Auto-Lab Complete Car Care Center at  (734) 404-7625. At our local auto shop, we can expertly handle your car’s repair and maintenance needs. Feel free to give us a call to make an appointment!