If your battery has a DEAD CELL , the engine won't crank , none of the courtesy lights will work , even the door chime for the key in ignition with the drivers door open won't make a sound even with the alternator and voltage regulator working fine
Only if your alternator is not working properly. If you are always charging your battery, check your alternator belt. That was the solution for my escort, a new $10.00 belt.
Alternator is no longer working properly.
the common cause why the light is on is that your alternator is not working well,try to have your alternator checked .may be the carbon brush is already worn out.
The alternator really can be shorted out but you can cause a short if you contact the hot battery connection to ground. whenever you work on a car, you should really disconnect the negative battery cable. It takes that battery out of harms way and you too.
yes if the alternator isnt charging the battery correctly then it couldnt be sending ecu false signals when my alternator was playing up , my central locking my hazards interior light and rear wiper stopped working
yes if one of the wires was getting an earth from the alternator cover or rubbing off the engine the battery light is really an alternator light warning you that the alternator is not charging the battery
The battery is only a storage device. The alternator replaces the electrical energy that the battery uses every time you start the engine and every time you turn on an electrical device in the car. If the alternator isn't working or isn't working properly, the battery will eventually discharge. Answer if the alternator is in fact working but you have let the battery run empty, simply getting a jump start might not allow the battery to charge sufficiently once you start driving again. you have to charge the battery up a sufficient amount or the battery will just run out again.
Check the alternator.
The answer is no . The battery starts you vehicle , the alternator charges the battery so if your alternator is bad your battery is not receiving a charge which will cause a "no start" condition.
Do you mean What does it mean when the brake and battery lights come on in when it is already started? Check your alternator may be its not working well it cause the battery sign comes out.
Yes
No, the battery has nothing whatsoever to do with the belt other than the belt is driving the alternator which recharges the battery. The alternator is working hard to recharge a weak battery. If the belt is squealing then the belt is either worn out or it is loose. If it is loose it is because the tensioner is defective and not holding the proper tension.