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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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Old 12-03-2015, 07:42 PM
Avila97 Avila97 is offline
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Location: New york
Join Date: Dec 2015
Posts: 13
Mein Auto: 03 bmw 530i
My car won't start

Hey my 03 530i won't start. The car battery seems to not hold the charge. I jumped the battery and left it overnight next morning it didn't start but the dash lights came on. I bought a new battery thinking that was the problem but it's not. I don't know what else it could be. I tested the alternator and that's not the problem.
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Old 12-03-2015, 07:52 PM
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Brandon002 Brandon002 is offline
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Location: US
Join Date: Aug 2015
Posts: 1,983
Mein Auto: 2002 530I Sport
Does it crank? You're going to need to provide a lot more details before anyone can even begin to help.
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Old 12-04-2015, 11:21 AM
Avila97 Avila97 is offline
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Location: New york
Join Date: Dec 2015
Posts: 13
Mein Auto: 03 bmw 530i
Yes it clicks line it wants to start but it doesn't
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Old 12-04-2015, 01:23 PM
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sixpot_simon sixpot_simon is offline
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Location: Australia
Join Date: Sep 2013
Posts: 1,313
Mein Auto: E30, E39
Hi Avila,
Check out the Battery Drain section of the wiki:

What voltage was the new battery when you first tried to start it?
Then what did it drop to in the morning?
Does it have any aftermarket electrics (eg stereo or alarm)
Has any work been done to the car recently? Or any other problems?
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Old 12-04-2015, 01:46 PM
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SSJRICH 540i SSJRICH 540i is offline
2000 M5
Location: Vancouver, BC
Join Date: Feb 2010
Posts: 810
Mein Auto: '00 M5
First, did you buy the right battery? 49 series? Did you make sure that the battery you bought was fully charged?

How did you test the alternator if the car didn't start? Assuming that you jump started your car, how did you test? What voltage were you getting?

When you say clicks, do you mean cranks, or literally clicks. If it cranks and doesn't start, is your security light on while you crank?

Have you scanned the car for codes?

Current - '00 M5 - '02 530i M sport - '02 X5 4.4i Sport - Old - 00 540i/6 M sport -Old - 97 540i/6
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Old 12-04-2015, 08:30 PM
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mattmar1 mattmar1 is offline
Location: Louisiana
Join Date: Dec 2014
Posts: 1,672
Mein Auto: 1999 5281 5 sp msport
hi avila..youll need a little bit of test equipment here, mainly a voltmeter, cheap enough. first off, charge the battery overnight, then read the voltage. it should be 12.5+. after starting the car, with it running, read the voltage at 1500 rpm or so, it should be 14v thereabouts. when sitting overnight, does the battery voltage drop? with the headlights turned on, engine off, does the battery voltage drop much? that kinda covers battery, charging and parasitic drain probs, but your description of the problem doesnt give much to go by.
99 528i 5sp sport

be alert...the world needs more lerts
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