something is causing a drain on the battery when switch is turned off
Yes, alternators are designed to maintain the battery, or recharge a battery that has been slightly discharged from starting the car. When the alternator is used to recharge a dead battery, it causes the alternator work harder and longer than it is designed for, causing it to overheat, thus causing damage to the alternator. A battery charger should be used instead. They are designed for charging dead batteries. After the battery is charged, let the alternator maintain the charge.
weak or faulty battery, faulty alternator (or slipping alternator belt causing battery not to charge) or faulty starter motor
An auto battery could be leaking for a couple of reasons. The alternator could be overcharging the battery causing the leakage. Or the battery itself could have a short or other internal problem causing it to leak when charging.
It can happen. The bearings on the alternator of my Silverado did that once, and it ended up causing the vehicle to shut down. the alternator on your car charges the battery which in turn runs the electrical supply to the car. if your alternator is damaged the battery will deliver power to the eletrical system until it no longer can and the car will stop running.if i were you i would replace the alternator,recharge the battery if it is still good and then happy motoring.
Alternator Belt has snapped, causing you alternator to stop charging causing you battery light to come on, but this belt also runs your power steering pump which if that's not working your steering will become heavy
You have a short - it's hard to be more exact than that, but if you disconnect the battery and charge it outside of the car and it stays charged, you have a short. If it does not stay charged, you need a new battery.
If its an old battery the cells could be dried up, meaning there is not enough battery acid in it, or if you leave your lights on, or a bad alternator could be causing the battery to not charge while the car is running.
Loose or worn fan belt would cause alternator not to spin fast enough to charge battery. Worn bearing in alternator could be causing it to seize and causing belt to slip
All that would be left would be a short in the wiring to the alternator.
Some light may be on pulling power from the battery. Can also be a stuck relay. The new battery is possibly defective. Alternator can be weak.
Your vehicles primary battery will drain eventually causing it to not start. If you drive for a long time with a dead alternator the vehicle can (rarely) shut off.
Have you had the alternator tested? It may not be regulating the energy to the battery, causing it to drain
It sounds like you simply need to change the alternator. Easy test: if vehicle will start, carefully remove the ground/negative cable from the battery (may help to llosen slightly beforehand). If vehicle runs, turn on lights; if it still runs, the alternator is fine. All vehicles should run on alternator only. If the vehicle sputters and dies, the alternator is dead. Replace alternator, and VERY IMPORTANT, fully charge battery before engaging alternator. A weak battery can damage a new alternator causing alternator death.
Nothing, the battery did it's only job by cranking the vehicle. Now it is up to the alternator to keep all electrical working while the car is in operation.
i would start by testing the battery , i have seen cases where the battery was good enough to start the vehicle but was causing the alternator to do all the work resulting in premature failure. my f150 went through a brand new ford alternator in 2 months .
Don't believe a word AutoZone tells you. My battery died so I went there and they tested my battery and alternator and told me it was the battery. So I bought a new battery and 2 days later, dead again. Went back and they tested again and THIS time, it was the alternator. I went nuts on them and ended up getting both my battery AND alternator for free for their mistake that left me stranded at 12am.
The battery light comes on when the alternator is not charging. Changing the battery did nothing. Either put a gauge on the battery to see if it is charging, or while running, disconnet the positive cable from the battery. If the car dies that means the alternator is not charging. Most parts stores will check it for free. Oriely's , Autozone, etc.
The low voltage light should come on if you have a bad alternator. Without a good alternator, the battery will die causing the low voltage.
Depending on how dim, it could be your battery, alternator, or poor power supply at the headlight socket. Poor power supply meaning corroded wires causing high voltage drop. Have the battery and alternator tested and go from there.
A bad battery will not turn on a check engine light. A bad alternator however will. Have your vehicle checked and see if the alternator is putting out at least 13.5 volts and if so there may be another issue causing the light .
It may be that your alternator is overcharging and causing the the battery acid to expand and blow out the filler cap vents. Use a volt meter to check the charging system when running. It should be in the area of 13.8 to 14.2 volts max. If the voltage exceeds these values, the voltage regulator may be deffectivie or the alternator could also be defective.
In most cases the air conditioner does not affect the battery or the alternator unless you are running it than yes, any pull on the electrical system such as a bad compressor that has been turned on for any period of time could more than likely drain a battery. Its not likely that it would kill the alternator or the battery, it is more then likely that if you find your alternator is dead and does not work it was on its way out anyway. But, by turning a bad compressor on you force the brushes and the armature to exert themselves causing them to burn out faster.
Problem with the charging system. Altenator, Battery, etc.. (may even be a loose belt causing the alternator not to spin fast enough to charge the battery).
A short in the car's electrical system, a bad alternator OR a bad battery.