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Bmw x5 battery light stay on

I change battery an alternator an its still is on

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Check your manual for what the battery light indicates. It is just a general light for the electrical....not always the battery.

Posted on Mar 26, 2014

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The battery light comes on when the alternator isn't charging or because the instrument cluster can't see that the alternator is charging. Make sure the BSD cable is connected and the wire isn't damaged. I have had a new alternator be defective and left the battery light on. If the BSD cable looks ok try another new alternator. bmw x5 battery light stay on - 038d35ef-096f-4be7-822d-10c551d0133c.jpg

Posted on Mar 27, 2014

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SOURCE: I remplace a new alternator and battery on a BMW x5 2001 it won'

theres an anti-theft system. take positive terminal off battery, have someone holding the key on like trying to start it, then put the terminal back on and that should start it right up (had same problem in my dodge ram) if not, check all you're connections

Posted on Aug 16, 2009

SOURCE: BMW X5 battery light flashes. Is it the battery or alternator?

Think what your asking

You have the car & we are on the internet !!!

If the battery is 5 years old-- it may have failed
You could test it & then if necessary replace

The alternator has nothing to do with starting & that
also can be checked for voltage & current output,
but not from where we are here at our homes,need
the car to test it

Posted on Dec 01, 2012

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Brother Mark, changing the battery with a new one being done won't make the light go out, as you noticed. Light is still on so you changed the alternator. Good, but the battery light is STILL on. This only means that the charging circuit from the alternator is not working in the voltage regulator or the wiring is not connected properly to the alternator/regulator. A new battery will show over 13 to 13.5 volts not connected. An old battery will still show 12 volts and still be weak or bad. After connected and engine running, the system will show at least 14 volts because alternator/regulator is working properly, using a voltmeter/load tester connected to the battery. If after replacing the battery and alternator it is still reading 12 to 13.5 volts, it is not working and the light will stay lit on the dash. You may have purchased a faulty alternator if the system tests out this way. Have your system checked with a volt meter or load tester bit be sure all the connections are proper and clean.

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Think what your asking

You have the car & we are on the internet !!!

If the battery is 5 years old-- it may have failed
You could test it & then if necessary replace

The alternator has nothing to do with starting & that
also can be checked for voltage & current output,
but not from where we are here at our homes,need
the car to test it

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