Back to all

Feeling Powerless (Why Is My Battery Light On?)

September 22, 2024

When one of your vehicle’s warning lights comes on, the first thing that comes to mind is, “Oh, no, what’s wrong now?” When it’s the battery light, it means there’s something wrong with your vehicle’s battery or charging system.  And because both are important for your vehicle to work properly, it’s a good idea to get it checked out.  Here are some things that may cause a battery light to illuminate.

It could be that your battery has failed.  It could be on its last legs or completely dead.  When it isn’t showing it has the voltage it should, your vehicle lets you know.

If it’s not the battery itself, it could be the system that charges it.  The alternator is part of that system and could have a problem.  It could be putting out no power, too little power, or too much.  The alternator may not be working because the belt that drives it (using the engine’s mechanical power) could be broken or slipping.  Or the alternator pulley may be broken.

The alternator needs to have a solid connection to the battery, and sometimes the posts that connect to the battery cables get so corroded, they can’t conduct enough electricity. Or it could be that a battery cable isn’t conducting power properly. 

Because the alternator supplies power to other parts of your vehicle, if it gets overloaded, it will also cause your battery light to come on.  Other possibilities are an electrical short in the charging system or a failed voltage regulator.

Your vehicle may be hard to start or it may not start at all if you have any of these problems. It’s important to bring it in to us so we can diagnose and repair the problem before you wind up stranded… and feeling really powerless.  

TLC Custom Exhaust Brakes & Tires
1735 N Main St
Royal Oak, Michigan 48067
248-541-8300
http://www.tlcautocareroyaloak.com

Need Service?

More articles from TLC Auto Care

Cabin Air Filter and Engine Air Filter: What’s the Difference?

April 26, 2026

You may have heard someone say they just got the air filter replaced in their vehicle. But did you know your vehicle has two different major air filters and they both perform quite differentbut very importantduties? Todays vehicles have a cabin air filter, and an engine air filter. The engine a... More

Royal Oak Road Trip Preparation

April 19, 2026

People from Royal Oak, Michigan, love their cars. And nothing goes with cars better than a Michigan road trip. Freedom from daily schedules, new sights and the open road it's great! But there's nothing like car trouble to bring the fun to a grinding halt.You can't always avoid problems, but yo... More

No Fountain of Youth (Aging Tires)

April 15, 2026

Can you think of anyone who enjoys aging? Wrinkles where you don't want them, gray hair, eyes that won't focus any more, no stamina. Believe it or not, your tires age, too, and they don't get better the older they get. And here's the important thing to know, even if they can still pass a trea... More