Just like all auto parts serve important functions, the alternator supplies power to your vehicle’s electrical components. This vital car part tends to shut down gradually, leaving plenty of warning signs along the way that can help you prepare before potential breakdown. Check out the guide below to learn more about some of the key indicators that your car needs a new alternator.

How to Know It’s Time for a New Alternator

1. Odd Smells

If you smell burning rubber or a scorched scent coming from your car, this can be a telltale sign of alternator failure. An overheated alternator or the friction of a misaligned belt and pulley will bring about this foul odor.

2. Trouble Starting

Starting a car requires a lot of energy. If your battery isn’t properly replenishing its power due to a failing alternator, cranking the car’s motor could be too difficult a task. If this is the case, the vehicle will make a clicking noise when you attempt to start it, and the engine will have trouble getting going. Check more obvious auto parts like the battery first but note that the alternator may be the culprit.

3. Dim Headlights

Because your car’s alternator is part of its electrical system, it powers all dashboard and external lights. If you notice that these lights appear dim, the alternator is likely malfunctioning. It may also cause electronic accessories like power windows or seats to operate more slowly than usual.

4. Warning Light

If your alternator isn’t performing up to its usual standard, your car will automatically light up the ALT or GEN light on your dashboard. Looking like a small battery with plus and minus signs, this light indicates that something is amiss with the electrical components of your vehicle. Have a mechanic take a look as soon as possible.

5. Whining Noises

The alternator runs by a belt running in conjunction with a pulley system. When the pulley doesn’t correctly line up with the belt or if the bearings are worn out, your alternator will make a whining or growling noise. Have a professional perform a preventative belt check and look for cracking or age-related wear.