It could either be because your alterneator is going bad, or that your alternator belt is loose. Theres an component in the alternator that sends a signal to the dashboard for the battery status. Most often on reconditioned alternators, this component goes bad but it does not affect the overall performance of the alternator
Why would battery light come on then go off
If it is undercharging the battery yes, but if it is overcharging the battery no in most instances. If it fails completely the light will come on.
what causes the battery light to on a 2005 ford expedition to come on?
Your battery is probably dying
A bad stator causes the battery not to charge. That makes the battery light come on. Some other things that can cause the battery light to come on are corroded or frayed cables or connections or a loose/bad ground cable.
battery is on its way out or its not charging properly
If your battery is not being charged , the battery light will come on in your dash
check battery cables are connected correctly, and there not crimped under the battery.
Loose connections from the body electrical strap to the engine. You said battery but do you mean the charge light?
could be low battery or loose connections
Might not be the battery ... something in the charging circuit (alternator, generator, voltage regulator, etc) could also be causing this "something's wrong" light to come on in the dashboard.
Check your alternator belts. Might be slipping or broke.
Your alternator is not charging.
That your engine is not running.
No. If the alternator is working fine, the battery power is not used.
Only the computer can tell what made your check engine light come on. It could be your battery. If your battery is bad, replace it and see if that solves the problem. If it does not, then you will have to connect your car to the computer and find out why the check engine light came on.
Very confusing question. I assume you mean what light comes on when the batteries is defective. If that is the case then the red battery warning or charging system warning light may come on. And then again the light may not come on at all. The light is there to warn you about a problem with the charging system and not necessarily with the battery.
A light in your car might be on, running down the battery!!
A few causes that will make the Battery Light come on are: 1. Faulty Battery 2. Loose Battery Connection 3. Battery is not Charging, ie. Faulty Alternator
When our 93 grand prix battery light came on it meant that we needed a new battery. We tested the battery with a volt meter and the battery read 1 volt, it should be 12volts. Still wondering how to reset the battery light?
Is it charging, if not have you checked wiring to alternator.