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Why does my battery light came on then go off?
The light will turn off after a few seconds. An illuminated battery light could be due to a number of issues, including: A loose or corroded battery cable. A problem with the alternator or voltage regulator.
What does it mean when your battery light comes on and off while driving?
battery charging problem
Basically, the light indicates a battery charging problem. If the light comes on and stays on while driving, this means that your alternator is running solely on energy stored in the battery. If you continue driving, your battery will eventually drain and your vehicle will stop working.
Is it safe to drive with a bad alternator?
If the alternator is going or has gone bad, in most cases the vehicle can be driven for a short distance and for a short period of time, allowing you to make it to a service station or automotive parts store for a replacement alternator.
Why is the battery light on but the alternator is charging?
Usually, the light turns off after some time, but if it stays on even when you are driving, then pay attention. You might notice some signs of a weak battery, including power windows not coming up, or the audio system not working. Let’s perform a few checks to see where the problem lies.
What causes an alternator to go over base voltage?
If you are getting more than 2 volts above base voltage, most likely your alternator is over-charging the battery or the battery is faulty. Other potential problems are a faulty voltage regulator or a problem in the charging system wiring.
What happens when the diodes in an alternator go bad?
When one or more diodes go bad, the alternator can cause all kinds of problems. AC voltage leak can cause your lights to dim and drain power from your battery, for example. Usually, you can detect this leak by measuring AC voltage across the battery posts using a digital multimeter.
Why does the battery light stay on when you start the car?
In case the battery light stays on when you start the car, do not worry. It is usual for the light to power on when you turn the ignition to your vehicle. Usually, the light turns off after some time, but if it stays on even when you are driving, then pay attention.