Battery Light Inspection



Chevrolet Buick GMC Of Sanger is located at: 1028 Academy Ave • Sanger, CA 93657

4 Common Reasons Why the Battery Warning Light Illuminates on Your Dashboard 

When it comes to the electrical components in the modern-day automobile, the battery is the beating heart that keeps everything humming along happily. Without a functioning car battery, many of the creature comforts of your vehicle will not function, not to mention the car won’t start. When there are issues with the car battery, a warning light will illuminate on the dashboard.

The All Important Car Battery

Modern vehicles require an electrical spark to ignite the engine and begin the combustion process that powers the vehicle. The battery, obviously, is responsible for beginning the ignition process every time you start your car.

The battery in your vehicle is also responsible for many of the car’s luxury components, such as:

  • Power windows
  • Alarm system
  • Radio
  • Air conditioning
  • Interior, exterior lights, and headlights
  • Power seating

Without a functioning car battery, your vehicle will have problems functioning properly, and the car may even not start. When this is the case, a warning light will be turned on in the dashboard to alert you.

4 Reasons Why the Battery Light Turns On

When the battery warning light turns on, it illuminates a battery symbol on your dashboard. The battery warning light could also be the word “battery”. There are four common culprits for this.

Corroded Battery Terminals or Cables

Have you ever pulled the batteries out of your dead TV remote, only to find crusty battery corrosion on the interior component? Well, this can happen to your car battery also.

Over time, corrosion can occur on the battery terminals or cables. When the corrosion is particularly bad, the electrical output of the battery can be affected, and the electrical components in the car can lose power. This will trigger a warning in your car’s computer, and turn on the battery warning light.

Dysfunctional Serpentine Belt

The serpentine belt is the main vein that snakes throughout the engine compartment. It is incredibly important and helps transfer power to many engine accessories. Without a functioning serpentine belt, the electrical power will struggle and the battery warning light may illuminate.

Warning signs for a worm-out serpentine belt may be:

  • Cracks or tears
  • Fraying around the edges
  • Glazed outer layer
  • Loose fit

Bad Voltage Regulator

The alternator in your car is responsible for charging the battery after the car starts and while it is running. It does so by sending certain amounts of power, depending on what the battery needs.

Attached to the alternator is a voltage regulator. This mechanism controls the voltage that is sent from the alternator to the car’s battery. It can increase and decrease the power whenever necessary.

When the alternator voltage regulator is broken, or malfunctioning, the alternator no longer sends the correct voltage to the rest of the electrical system. This triggers a warning in your car’s computer and can turn on the battery warning light.

Faulty Alternator

Most of the time, when a battery warning light is turned on, the issue can be traced back to the alternator. The alternator converts the mechanical power of the engine, into the electrical power for the car battery.

When the alternator is not functioning correctly, the rest of the car is no longer receiving adequate electrical power. When it fails completely, the battery is no longer being charged and eventually will expend all its charge and die.

How To Fix a Car Battery

When the battery warning light illuminates, we recommend that you bring your car in for a battery light inspection. During an inspection, a mechanic will use a voltage meter, amp meter, and load tester to determine whether the problem is with the battery or the alternator.

An inspection of the serpentine belt will also be carried out to determine the status of the belt itself, and if it should be replaced.

Once the issue has been diagnosed, the mechanic will then be able to create a quote for the necessary parts and labor, and then start repairs. If certain parts of the battery or alternator can be repaired or replaced, the mechanic will do so. Otherwise, it may be time for a complete battery replacement.

Battery Light Inspection

How To Replace a Battery

Replacing the battery on your car is something most folks can do from the comfort of their own homes. If it’s been a while since your last battery replacement, and the battery on your car has been acting unreliably, it may be time to replace it. Follow these steps to get the job done:

Removing the old Battery:

  1. Remove the negative (-) cable from the battery terminal. This may require a wrench
  2. Remove the positive (+) cable from the battery terminal.
  3. Loosen the battery bolts, fasteners, and/or connectors that are holding the battery in place
  4. Remove the battery, and be careful, car batteries can be deceivingly heavy

Installing the New Battery:

  1. Clean the battery clamps of any dirt, residue, or corrosion
  2. Install the new battery into the holder and secure it
  3. Reconnect the positive (+) terminal
  4. Reconnect the negative (-) terminal
  5. Test the car by turning over the engine, or just simply turning on the electronics

If you are having issues with your battery, and the battery warning light is turned on, let us know. We can diagnose the problem, and help you with the necessary repairs, so you can hit the road again.