how to reset service battery charging system light

How to Reset Service Battery Charging System Light

In this article you will learn how to reset service battery charging system light when it come on and what it means. The check charging system light or battery light come on when the charging system is faulty.

This could be as a result of either jumpstarting your car a lot or a bad alternator showing you it needs attention. This could also be a sign that you vehicles battery is week or the primary work of the charging system is not done.

Whatever the case maybe, whether a weak battery, bad alternator, faulty charging system you will get to learn about all the possibilities and how to fix your car charging problem. Continue reading to find out why the check battery or charging light is one and how to fix it.

What causes charging system failure?

What causes charging system failure, a lot of things including a bad alternator, weak battery, drive belts and even faulty car computer could be the culprit. Diagnosing the cause behind check charging system or battery life has to be done by a professional but you too can try checking the follow.

  • Bad or failing Alternator

The alternator does the most important job in a vehicles electronic charging system. It is in charge of keeping the battery alive and charged, thereby making it possible to start the vehicle anytime.

Alternator can be very notorious and cause problems when it is faulty and not performing it’s primary function as expected. A faulty or bad alternator could pretend to be working but would not be discharging a low voltage which is not enough to charge the battery.

Read Also:- Can a Car Battery Be Too Dead to Jump Start

If the alternator is discharging low voltage you as a car owner might not be able to notice. This is because, the battery does not have a mouth to say “Hey i am not receiving low voltage please check the alternator”.

Rather, the vehicles computer will detect it and send a signal to the battery charging system light to come on. In this case you might as well need a professional to troubleshoot and know where the actual problem arise from.

  • Bad or Failing Battery

Another reason why your Your battery/check charging system light is on could be as a result of a faulty battery. When the battery is bad, failing or low on charger, could be a sign that either the alternator is not working properly, or the bad itself is dead.

In most cases if the is old and has not been replaced for a while, it is most likely to be the case of the battery. A car battery is expected to last at least 2-3 years, after this time it could start having problems.

However, how long a battery lasts before replacing it all balls now to climate conditions, mode of use and alternator’s working condition. Service battery charging system light could pop up as soon as you do not expect it to even with a newly replaced battery.

If you change your vehicles battery today, or even now and the alternator is bad, then expect your the new battery to be dead again in less than a day. If you cannot do the diagnosis at home please go and consult a professional.

  • Drive belt troubles

A slack or broken drive belt could be the reason why the service battery charging system light is on. This is because the alternator is driven by the serpentine belt, this makes it possible to rotate the coil in the alternator so as to produce electrical energy to keep the battery charged.

The serpentine belt drive many other components in the vehicle including power steering pump, the air conditioning compressor and the water pump. We are only concerned about the check battery light in this article.

A failing belt drive or a broken serpentine belt would not perform its function thereby causing the alternator to fail. If the alternator fails to charge the battery then there would problem which will cause the battery light to com up on the dashboard.

Considering to consult a mechanic if this happens is the best and good decision to make. Replacing a vehicles broken or loose serpentine is not what you as a vehicle owner can do except you have the necessary tools and know how.

  • Corroded wires and partial connections

This is a very sensitive electrical problem that needs a professional touch. The case if corroded wires could even be visible but the case does not apply with partial connections.

Partial connections could be hidden in such a way that more than visual inspection would be needed to identify the problem. The best way to diagnose partial contact is by using a meter to test the wires and connections.

The electrical meter will read and tell where there is a broken connection of a partial connection. It is best to visit the nearest mechanic or auto electric repair shop close to you for proper checks.

In the case of corroded connections identifying and cleaning of the corroded electrical surface is a wise decision. Corrosion on electrical components or connections lead to having less appropriate contact with other surface.

Have your mechanic clean all of the connections and make sure the battery clamps are clean and tight. Additionally, have them inspect all internal alternator wirings and connections and also have them check all of the fusible links and look for any burned links. If they are burned, get them repaired.

  • Faulty computer system

Newer vehicles computer system function better and very efficient. Opposite is the case when the vehicle is old, the computer system could start misbehaving.

Old vehicle computer systems are vert notorious for this, giving out false indications and light signs on the dashboard is one of there hobbies. Try and have your mechanic check and run a test on your vehicles computer system as this could be the reason why the service battery charging system light it on.

So bear this in mind there is no one single answer to as why the battery or charging system light is on. Either the alternator, battery, broken or loose belt and even the vehicle’s computer system could be the cause.

All the above mentioned are indicators and problem cause why your vehicles battery light is on. If you do not have the technical know how to check this and identify the problem, do yourself a favors and visit a professional for diagnostics check.

Why is my battery light still on after replacing battery?

A dead battery is not the only cause of the battery light been on, a bunch of other reasons could cause this. Other common cause of battery light includes loose connection, failing alternator and even a faulty computer system.

However a battery light problem could be localized to the battery or battery cable terminals. Corrosion as big challenge, it cases a weak connection between electrical connecting surfaces.

What should I do if my battery light is on?

If the battery light come on the logical thing to do is park and take some time to check and inspect the vehicle. A check battery light might look simple but i can as well lead to an an unimaginable damage.

If the check battery light come on, even the radiator fan is at risk of not working. Apart from the the radiator fan, the alternator is driven by serpentine belt and if it breaks then other components of the cooling system could be affected as well.

If the cooling system stops working, the engine is at the risk of overheating. When the engine overheats then many other damages can happen to engine other parts.

If you ever notice that the service battery charging system light is on this are things you can try doing

  1. check for loose drive belt
  2. check for loose battery terminal cable
  3. test for faulty or bad alternator
  4. Check for corroded wires and connectors

This four points would lead you to identify why the battery light on your vehicles dashboard is on. Do not continue driving until you fix any of this problems if you notice them in your car.

Doing the necessary checks will help you to reset service battery charging system light whenever it comes on. If you still have any more questions please use the comment sections to as us.

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