Yes, If the system is over charging because the regulator is bad in the alternator. Other things will cause problems as well. Bad grounds, corrosion, loose connections, name a few. get the system tested and get it fixed. Solve the problem now before it becomes something worse.
Possible causes,- Faulty battery- Alternator belt missing or loose- Faulty Alternator- Alternator harness is open or shorted- Alternator circuit poor electrical connection
weak or faulty battery, faulty alternator (or slipping alternator belt causing battery not to charge) or faulty starter motor
It can, though it is unlikely -- the alternator and the voltage regulator would both have to be faulty. A faulty alternator will not charge a battery, though, so it may seem normal until the charge put into the battery at the store runs out.
It may be caused by faulty battery connections. Alternator failing, other electrical component "jammed on", - IN these case have a mechanic check the charge rate of the alternator firstly
As long as the battery is charged
Faulty Alternator?
If your alternator stops working you are powering the vehicle on your battery and your battery is not being charged by your faulty alternator so eventually as the battery drains down the car will stop running. Avoid using any electrical power...ie...lights, power windows ect and get your alternator repaired immediatley.
A quick test I've always used is to start the car. Remove the neutral cable from the battery. If the car still runs your alternator is fine.
More than likely your alternator is faulty. The alternator is supposed to charge the battery and run the car's electrical system when the engine is running. If your headlights dim it means that not enough electricity is being provided. A simple free test at just about any auto mechanic shop should confirm if the alternator is faulty. If the alternator is faulty, and it is not just due to a loose belt, you want to replace the alternator as soon as possible. Eventually it will fail to charge the battery, and you car won't start.
faulty voltage regulator
alternator faulty
That is typically caused by a faulty alternator. Have the alternator tested; the light is indicating that the alternator is not providing a charge to the battery.