While driving my battery light came on and off, and as I made a stop to make a left turn. What does this mean?

While driving my battery light came on and off, and as I made a stop to make a left turn. What does this mean?

My car has 199237 miles.

Experienced mechanics share their insights in answering this question :
Hi, thanks for writing in. The most common parts that involve this issue are the battery and the alternator. The starting/charging system should be checked to see if the battery is going bad and getting weak. It can then put a larger load on the charging system. The alternator may not charge at the rate it is rated at, which would also cause the problem.

If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect your battery and your alternator for you, and make any repairs as needed.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

If your battery warning light comes on whilst you`re driving, it means that your battery is no longer being charged by the alternator and is running only on its own charge. That means that your car is only running on battery power that will eventually run out, bringing your car to a halt.
The alternator helps to manage the supply of electricity by recharging the battery. When there is a bad alternator, your car will shut off while driving. This primarily happens as it affects the power supply. Alternator issues will make the engine lose power.
This generally means that you have a weak battery or possibly a failing alternator or voltage regulator. The voltage regulator is a unit that regulates the charging of the battery by the alternator and maintaining a certain amperage while the engine runs.
The red battery light could indicate a problem with the alternator, battery or other parts of the electrical and charging system in the car. It could be a minor problem such as a malfunction rectifier unit, blown fuse or cabling short circuit.
There are many reasons why your battery light could turn on. It could indicate a bad battery or dead battery, a charging problem, a faulty alternator, a wiring issue, and so on. And while driving with the vehicle`s battery light on is possible, it`s not recommended.
The alternator belt is the connection that interfaces the crankshaft and alternator together. If your car`s alternator belt isn`t working properly, your car battery won`t get the charge it needs for your vehicle`s electrical parts. With that, your car battery light will frequently be on to indicate such an issue.
Symptoms of a burnt out diode:

The engine will begin to run rough, lack power and eventually stall and not start again. The battery warning light will turn on, warning you that there is a problem with your alternator charging system. The headlights will become dim due to reduced battery voltage.

Defective charging system – A car battery drains quickly if something called the alternator on your charging system fails to push out enough voltage, ideally between 13.5 – 14.5 volts. In this case, the battery will continue to drain even while the car is running.
Probably, the most common symptom associated with a bad regulator is flickering, dimming, or pulsing lights. To be more specific, you may notice that the vehicle`s: Headlights fluctuate between bright and dim, without you doing anything. High beam isn`t working as expected.
But when someone mentions the “alternator fuse”, they`re generally referring to the primary, high-amperage fuse (or fusible link) between the alternator and the battery. Like any fuse, the primary alternator fuse acts as a circuit protection device.
One of the most common problems you`re likely to experience with an alternator is a failure in the bearings. There are needle bearings in the alternator that allow the rotor to freely spin inside the housing, and those bearings can break down over time as a result of exposure to heat and dirt.
A failing alternator belt can cause the Battery Light to turn on, dimming or flickering lights in the car, and engine stalls.
It is unsafe to drive with your car battery light on. Issues that activate your car battery light, like a defective battery or faulty alternator, can cause your car to lose power. In these instances, your car won`t operate as it normally would.
The cause of the battery light could be a loose or corroded battery cable or other wire connecting components of the charging system, or it might be a problem with the alternator or voltage regulator. The alternator generates the power that is stored in the battery.
Can I Keep Driving My Car if the Battery Light Is On? Yes, you can, for a short time. The light indicates that the alternator isn`t charging the battery, which means your car`s electrical system isn`t getting the needed power.
I did a bit of research and found a battery reset is required to resolve the issue. The message can reset by itself, but the car needs to sit undisturbed for at least eight hours. Perhaps with your work/driving schedule the car doesn`t sit long enough.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

While driving my battery light came on and off, and as I made a stop to make a left turn. What does this mean?
ANSWER : Hi, thanks for writing in. The most common parts that involve this issue are the battery and the alternator. The starting/charging system should be checked to see if the battery is going bad and getting weak. It can then put a larger load on the charging system. The alternator may not charge at the rate it is rated at, which would also cause the problem.

If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect your battery and your alternator for you, and make any repairs as needed.

Battery light goes on when I start car then turns off, if I rev engine light comes back until rpms go down. Abs goes comes on/off
ANSWER : Batteries can die due to faults in the charging system so ideally a suspected "faulty" battery should be load tested before a decision is made to condemn it. The only exception to this rule is if the battery is already clearly "old" (greater than 5 years) but even then once you put a new battery in, as a replacement for a "dead" battery, you have to comprehensively check out the charging system. Diagnostic Trouble Code P0460 will result in disruption of the dashboard fuel gauge’s ability to accurately report your tank’s fuel levels. The fuel gauge readings may be erratic, or read somewhere off scale. Vehicles equipped with a low fuel warning light feature may also suffer from erratic low fuel warnings in the event of a code P0460. Unless the P0460 code has been reported alongside other trouble code, all of the vehicle’s essential systems should otherwise function normally. I would recommend that you request a check engine light diagnostic to first resolve the fault causing the P0460 code to set. The check gas cap light warning light could be due a faulty gas cap and/or small leaks in the EVAP system.

Okay so when I turn my lights on at night my brake lights do not work, when I don’t have my lights on they work fine.
ANSWER : Hi there. Based on your inquiry, it’s highly probable that you have a damaged light switch or some electrical fault inside the turn signal relay. However, it’s also possible that the brake switch above the brake pedal could also be the source of your problem. Due to the fact that multiple electrical components might be causing this issue, it’s a smart idea to first have a professional mobile mechanic complete a brake lights are not working inspection, so they can determine what’s causing all of these issues and recommend the right repairs.

My car stops when engine gets warm and while I am driving I stop on red light and car suddenly turn off and I have to hit starter
ANSWER : Hello, from what you’ve described it sounds like you are having several different issues. The starter should have nothing to do with it stalling, but it will have something to do with the car restarting if it doesn’t turn the engine well. The stalling can be from the distributor or possibly a computer sensor.

The scenario where you hit a car from behind may be from another problem, alongside with the idling of the engine. Without knowing the model and engine size of your car I can only say so much. I would suggest having a mechanic do a thorough check of the entire car to check the engine, brakes, and computer systems to see if the problems can be identified and repaired, or at the very least quoted.

My battery light came on when i was briving and so did some other lights on the dash board replaced battery and it still came on w
ANSWER : Hi there. What you are describing is common with an alternator failure or problems with the charging system in your Chrysler. The battery is supposed to supply power to the vehicle before starting the car, in which time the alternator takes over. If the alternator is damaged, the car will continue running off the battery and drain it. This is what tends to cause the clicking issue when you turn the key. It is probably a good idea to verify this problem before attempting repairs, by having a professional mobile mechanic come to your location and complete a battery will not hold a charge inspection.

Battery light and break light on at the same time???
ANSWER : It sounds like you may have a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine turns the alternator. The voltage regulator is a unit that regulates the charging of the battery by the alternator and maintaining a certain amperage while the engine runs. When the alternator is not working properly, this may result in the battery quickly losing charge and the car losing all power as you have described. You may also notice a whining sound as a result of the bearings inside the alternator begin to fail. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your charging system.

Purchased a battery last November…Recently my battery light came on. Then now my car lost power and it won’t drive forward?
ANSWER : Hello, thank you for writing in. The warning light is indicating an issue with the charging system in general. This means the alternator may also be having issues keeping the battery charged. This also validates you issues while driving, as the alternator is what supplies the vehicle with power once the car is started. When all of the warning lights illuminate, it is because they all depend on the alternator’s electrical supply, and are not getting it. You can have the alternator tested on the vehicle, or remove it and have it bench tested. For more help with this, contact our service department to schedule an appointment.

My brake light and battery light turned on
ANSWER : Hi there, thanks for writing in to YourMechanic.com about your 2008 Nissan Altima. When the brake light and battery light both illuminate, it’s sometimes caused by an electrical relay or damage to a sensor which triggers an error code that triggers these lights. The best way to find the source of the issue, is to contact one of our mechanics and ask them if they can complete a battery light is on inspection. Hope this helps and best of luck.