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|3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.|
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| How to Respond When Your Car's Battery Light Goes On |
By eHow Cars Editor
The battery light is misnamed: It doesn't go on when the battery is low. The battery light will go on only if the alternator is not charging the battery.
Things You’ll Need:
Step1: Do not panic - you have some time. You don't have to pull over right away. But don't ignore this light! You have anywhere from a half-hour to a day or even longer, depending on how much charge is left in the battery.
Step2 Turn off all unnecessary electrical accessories, such as the radio, heater, defroster headlights and windshield wipers.
Step3 Avoid using the horn, turn signals, flashers, dome light and power windows.
Step4 Avoid turning the engine off and on. Starting your car uses more of the battery's charge than anything else.
Step5 Drive to your auto repair shop if you can. Ask your mechanic to do an alternator output test to check if the alternator is charging.
Step6 Take the following steps if you can't visit the mechanic right away.
Step7 Turn the engine off and open the hood.
Step8 Look for whitish/bluish powdery corrosion on the battery cable ends. Clean with a wire brush if it's in evidence.
Step9 Make sure the battery cable ends are tight. You shouldn't be able to turn them at all.
Step10 Check the negative battery cable end. Make sure it's tight and secure at both ends.
Step11 Check the alternator belt (see "Check Your Engine Belts," under Related eHows). A loose belt will cause the alternator to undercharge and trip the battery light.
Step12 Make sure all the connections at the back of the alternator are secure.
any flickering if you were to turn on your radio, headlights and other accessories?
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