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Bmw 740i 1998 battery replaced but wont hold charge keeps going dead

The battery that came with the car was to small so replaced it with a bigger Bosch battery was ok for 2 days now keeps going dead, when i attach jump leads it does start the car as soon as leads come off after 3-4 minutes car switches off and wont turn over again.

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 1999 Durango will not start, no fire

ALTERNATOR NOT CHARGING

Posted on Apr 06, 2009

localwonder
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SOURCE: Nissan Wont hold a charge

Hi. this is defiantly a slow or major drain that is occurring within this vehicle. Here is a test that you can preform that will help you find this battery drain so you can illuminate this issue.



--BATTERY DRAINAGE TEST PROCEDURE--


Using a 12-volt test light, hook one end to the negative battery post the other end to the negative battery cable you just disconnected. The test light will glow or "light" if there is a drain. If the "light or glow" is faint, that is probably normal draw for the clock or computer. If the "light or glow" is bright, then there is a large drain. That should be corrected. Now start removing and replacing the fuses one by one until the light goes out; that one will be the circuit with the drain. Remember to hold in the button in the door jam for the interior lights.


Please rate and god bless:)

Posted on Apr 23, 2009

  • 1 Answer

SOURCE: 2000 BMW 740i starting/battery problem. Battery

I am having the same problem same car & year

did you ever find a solution?

Posted on Mar 13, 2010

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