Why would the battery light go on and off intermittently on your car?

Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alt belt.

A light in your car might be on, running down the battery!!

This could be the voltage regulator. Both the positive from the battery and the starter would be connected to it.

The car light? YES! Leaving your car light on WILL make your battery run out. Things like leaving your car door open if the light is on because it is open will cause the lgiht to Mae your car battery run out. There is a big difference between shorted out a car battery and running the battery down. Lighting in itself won't short a battery out but will run it down.

Dead/disconnected battery or bad starter if it starts intermittently. Probably the battery though.

the battery light means that your battery is being charged properly. so let it light.

The the alternator is defective.

there are lots more amps in a car battery eg there about 1.5 in a flash light and in a car battery there about 300 A car battery is a wet cell battery and a flashlight battery is a dry cell battery.

A dead cell in the battery will cause this. Also, any light that is on pulling power from the battery. Another possibility is a stuck relay.

its the alternator if the car is running with a battery light on. but check fuses first

No, a car battery does not have mercury in it. It would be very dangerous to have mercury in a car battery.

This same thing happened to me. The battery light would come on but my car would run fine then a few days later my engine started overheating and it turned out the fan belt had went. Once i replaced the fan belt everything was fine.

Light bulb in the home - alternating current (A/C) Light bulb in a car - direct current (D/C) Output of a battery charger - direct current Input of a battery charger - usually alternating current

The alternator is failing.

Alternator is no longer working properly.

it's either your wiring or the wrong alternator or a bad battery !!

nope the battery light would go on :P and btw i hope u get ur car over to BMW right away :P

If your 1997 Mercury Tracer has a battery light that blinks on and off while the car is running, it most likely means that the battery is not charging. This could be an issue with your alternator.

That light doesn't mean that your battery needs to be replaced. It means that your battery is not being charged while the car is running. Have your alternator tested.

Every car today contains a rechargeable 12-volt battery. This battery powers everything electrical: the engine's control computer, the ignition system, the radio, the headlights, etc. So the battery is vital to the car's operation. Like all batteries, a car's 12-volt battery would eventually go dead if it were not recharged, so your car has a built-in recharging system. Most cars have an alternator, along with a voltage regulator, that keeps the battery charged and also provides electricity to the vehicle when the engine is running. A typical alternator can put out between 500 and 1,000 watts when necessary. Because your car is so dependent on the battery, all cars have a battery light on the dashboard that is designed to warn you if the recharging system fails. A simple circuit looks at the voltage that the alternator is producing, and turns the battery light on if it is low. The battery light indicates a battery charging problem. If the battery light comes on and stays on while you are driving, the most common cause is a broken alternator belt or it more than likely total failure of the alternator is another possibility. The reason why your car can operate normally even though the battery light is on is because your car can run off the energy stored in the battery. Your car will run fine until the battery goes dead. At that point, nothing in your car will work. When the battery light is on, you can still drive your car to the garage -- you will not damage anything. But you want to get to the garage before the battery fails and your car dies.

That would be "indicator lights" - any light that indicates anything. When the light is on, it may mean a piece of equipment is on; when another light is on, it may indicate an error condition. For example, when the battery in your car is running low, a red light will indicate that fact. That would be "indicator lights" - any light that indicates anything. When the light is on, it may mean a piece of equipment is on; when another light is on, it may indicate an error condition. For example, when the battery in your car is running low, a red light will indicate that fact. That would be "indicator lights" - any light that indicates anything. When the light is on, it may mean a piece of equipment is on; when another light is on, it may indicate an error condition. For example, when the battery in your car is running low, a red light will indicate that fact. That would be "indicator lights" - any light that indicates anything. When the light is on, it may mean a piece of equipment is on; when another light is on, it may indicate an error condition. For example, when the battery in your car is running low, a red light will indicate that fact.

There is an easy way to find out what is draining the battery on your car. Disconnect the positive or negative battery terminal. Not both. Connect a test light between the post of the battery to the cable end of the battery. If your car is draining the batt ery the light will show it. To find out where the drain is coming from just pull fuses until the light goes out. Then you will know what is draining the battery by the function of the fuse you just pulled. For example, if you pulled the fuse for "radio" and the light went out you would know the radio is drawing the current off your battery.

Reasonable chance of an alternater and/or battery.

What brand is the car?

If the ashtray light is not working it will not drain the battery.