![]() Disable your headlights if you are driving during the day. Turn off the radio and make sure all interior lights are in the off position. This means turning off all non-essential accessories that are powered by the charging system.ĭon’t use your air conditioner or heater. ![]() Once you have determined that the battery indicator light is staying illuminated, you need to immediately conserve any electrical energy in your vehicle. If the light remains illuminated, then the charging system has detected a problem that will need the attention of an experienced mechanic to repair. If the charging system is working properly, the light will turn off automatically after a few moments. You will see the battery indicator light illuminate for a few seconds while this self-check takes place. This check will allow you to determine the status of your vehicle’s charging system.Įach time you move your key between the on, off, and run positions in the ignition, the charging system runs a self-check. The first thing you should do when you see your battery indicator light illuminated is complete a charging system check. If you don’t have an experienced mechanic diagnose the problem immediately, you may find yourself stranded on the side of the road with a vehicle that won’t start. If the battery indicator light is illuminated on your vehicle’s dash, this could mean that your car is running solely on the electrical energy stored inside the battery.ĭon’t ignore your battery indicator light. The battery stores the electrical energy created by the alternator, and this energy is used when starting your vehicle or powering accessories while the ignition is off. The battery and alternator are the two primary components that work together to generate electrical energy. If another battery starts the car fine or if jump starting works, then the most likely scenario is that your battery has a fault and should be replaced.Electrical power plays an important role in the function of modern automobiles. Check that the battery terminals are clean and tight. If the car is not starting but the battery indicator is green. The correct way to interpret the Battery Indicator If the fluid levels of your battery go down too low, the Battery Status indicator will simply stop working and may remain stuck on the green side, thus giving a false reading. There are many other battery faults or potential issues which cannot be shown by the battery charge indicator.įinally, maintenance-free batteries contain electrolyte fluid. Because none of the cells in a battery shares its electrolyte (battery fluid) with the other cells, there is no way for the status indicator to check the condition of other cells which might have problems.Īlso, the state of charge of one cell will not tell you anything about the actual health of the battery. The most frequent question I get in regard to the battery green light is: “Why is my battery light green, but the battery is not starting?”Īnswer: The battery status indicator only gives you information about the state of charge of one cell (out of six cells) of the battery. Black the battery needs to be recharged.Most battery manufacturers advise that when the Battery Indicator/ Magic Eye is: It can give three battery condition readings but needs a little interpretation to understand if you really have a faulty battery. The state-of-charge indicator (SoC) is a quick way to check the condition of your lead acid battery when you have no other means of testing at hand. We cannot open sealed batteries, so it is impossible to use a hydrometer to check the condition of the cells of your sealed maintenance free battery. The car battery green light is also called the: In effect, it acts as a really simple hydrometer for one cell of the battery. The Eye is actually a colored ball in a small tube which moves according to the specific gravity of the acid in the battery. However, it may also be seen on non-sealed lead-acid batteries.įirstly, the “Battery Green Light” or Magic Eye is not a light. It is usually a feature of most completely sealed maintenance-free lead-acid batteries. It can give you an idea of your battery power and reveal some simple battery issues. The car battery green light is a small round window on top of automotive batteries, which changes color from green to black to white as the condition of a battery degrades.
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