Why Is My Car Battery Light On?

June 23, 2023

You may have seen the car battery light on before and wondered is the car battery dead or dying. Your cars battery is responsible for powering all electrical components.Your cars battery is responsible for powering everything electrical in your vehicle. It powers the cars internal computer. Your power windows,and locks. The ignition system, radio, and headlights.

How does your car battery charge?

Your car battery is the main power source that allows your car to start. This battery will at some point go dead (like all batteries) unless its recharged. The car battery has a localized recharging system. This charging system is the alternator, and voltage regulator. This system keeps the battery charged and distributes electricity while the engine is running. Alternators can put out up to 1000 watts of electricity.The car battery normal voltage operates around 14 volts This electricity with keep your car running. The car battery light on is an indication that there is a charging problem.

4 Reasons your car battery light may be on

1. Car battery corrosion:

This common problem is often associated with a a vehicle that is difficult to start. Corrosion at the battery post or terminals interrupts the flow of electricity to the alternator. When the alternator cant do its job it will cause the car battery light to come on.

2. A car battery cable is loose

Cables on the battery are connected to the terminal. These cables become loose over time. They have also become loose after long drives on bumpy roads. Usually, a Ten Millimeter socket will be sufficient in tightening them down. A battery cable that is not connected tight enough will cause the car battery light to come on.

3. You have an old battery

Car Batteries wear out over time. Even though the warranty is for up to 96 months. You may want to consider the age of your battery if you see the car battery light on. If you live in hotter climates your battery will be subject to wear more quickly as well.

4. Bad Alternator

one of the most common problems that we see is a bad alternator. Alternators usually last about 5 to 7 years. The alternator is responsible for keeping the battery charged while you are driving. But if you have a bad alternator, it will not work to keep the battery charged. This will cause the car battery light to come on once the low level of charge is detected. Once the alternator dies, the remaining charge in the battery will run out very quickly If you have bad alternator, you will either need to replace it or have it rebuilt.

These are just some of the smaller and larger reasons that your car battery light may be on. If you find that your car battery light is on while driving, get it to service soon so that you avoid getting stuck on the road. At G&G Auto we check your battery each time you bring your vehicle in for service. You can rest assured if there is a problem we will find it.

Felecia Hernandez

July 17, 2026

The people are friendly, fast and attentive. They explained everything they were going to do and what I should get done to keep my car in tip top shape. I highly recommend them.

Robby Bostain

July 17, 2026

Very professional and very understanding of how car maintenance can effect your day. They offer free rides back home and to come back and pick up making the convenience much easier. Highly recommend!!

Clark Taron

July 16, 2026

Awesome prompt service. Ac service same day friendly staff pricing is good aswell.

Dex Com

July 13, 2026

We have been looking for a trustworthy auto repair shop since our auto shop owner retired years ago, we have *not* had a good experience until we found G&G Auto Repair. Hands down these folks are the best, competent, honest, and trustworthy shop that I have run across, these folks are reliable like our old shop. They have done great work on our van at fair prices, and that’s all I can ask for :) They also go above and beyond by texting all repair docs, assessments, and diagnostic results to my phone for review and approval. I really wish I had found them years ago. I highly recommend this shop!

John Puryear

July 12, 2026

The staff was wonderful and knowledgeable no pressure or up selling! Done in a timely manner and they warranty their work!! Totally awesome the owner Richard even texted me to make sure we were happy with our repairs!!

Marci Calley

July 8, 2026

Good service, they listen to u. Very happy for the help they gave my car.

Giovanny Plascencia

July 1, 2026

I went to G&G to get my (damaged) oil pan replaced on my Toyota. However, when I got my car back, the technician had over tightened the drain plug leading to the gasket cracking, causing a fair amount of oil to leak out of my Toyota unbeknownst to me until I had gotten home. Fortunately, after a few phone calls, Shaun told me to return the vehicle after I told him the worsening severity of the situation, and my vehicle got promptly fixed after I had bought it back, and I commend them for owning up to their mistake. Overall, it seems they did a good job repairing the vehicle, and it’s priced a little on the higher side but for this state, and the overnight turnaround time it would say it’s more than reasonable. I would come back again.

Sebastien Bauge

June 28, 2026

They did an excellent job. So excellent that they corrected tire installation errors caused by a different shop in town for free. Super transparent, knowledgeable, and helpful. Will use again.

Sharon Thomas

June 25, 2026

I had to have my air conditioning repaired and also have some maintenance work done. They got it done quickly and everything is working great. The staff is friendly and helpful.