If you notice your battery light on, you’re probably wondering why that is. The battery warning light is used to notify the driver of a problem with the vehicle’s charging system.
- The light may be red or amber and displays the “CHG” or “ALT” icons.
- The indicator light is red and displays the “BATT” when the key is in the ignition and the engine is off.
- Most commonly, there’s a red icon that represents a car battery.
The components of your vehicle’s charging system include the battery, battery cables, alternator, voltage regulator, and serpentine belt (which drives the alternator). A problem with any one of these components will turn that battery light on.
Testing & Diagnosis will typically be required to figure out where exactly the problem lies. However, there are a few things you should check first.
- Make sure your battery terminals are clean and the cables are tightly connected.
- Battery Testing and Replacement
- Make sure your serpentine belt is in good condition.
Beyond that, you’ll need access to tools and electrical testing equipment. An AAA card may be your best bet if you’re not mechanically inclined.
If the battery light is on and you’re still driving the car, turn off as many electrical accessories as you can, such as the stereo, air conditioning or heater, and avoid using electrical controls such as power windows. Reducing the amount of electricity the car is consuming will increase the distance you can drive before the battery is discharged. Get to a mechanic as quickly as possible, and have the battery, wires and charging system checked out to find the cause of your problem and what you need to repair or replace!
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