BMW increased battery discharge diagnostic process how to check how to know if your battery is bad

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the increase battery discharge warning is a protection mode every BMW has to protect the battery and leave enough power to start tehe engine but in many cases the battery still fine but it is not to maintain all the components on. this problem affect all BMW with Idrive from 2002 and up.

good voltages
12.1v + ignition on engine off
12.5v + ignition off engine off
14.5 v ignition on engine on

if the voltage is lower than 12.0 v that means that the battery needs replacement. the battery can still be good for other older vehicles.

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Vehicles in this video
2013 BMW X5 Xdrive50i M performance

This proces is going to be Similar to all bmw models with N54 N55 S55 N62 N63 S63 (etc,..) engines

E60 E61 530i 535i 545i 550i M5
E63 E64 645i 650i M6
E65 E66 745i 750i 760i
F01 F02 740i 740Li 750i 750Li 760i 760Li
E70 E71 X5 X6 XDRIVE 30i 35i 48i 50i
E90 E91 E92 E93 325i 328i 330i 335i 335d M3
F06 F12 F13 640i 650i M6
F07 F10 F11 528i 535i 535d 550i M5
F15 F16 X5 X6 Xdrive50i M
F30 F31 F34 320i 328i 335i 335d 340i
F32 F33 F34 428i 435i 440i
G11 G12 750i 750Li
G30 550i M550i
etc,... all bmw with Idrive from 2002 up to date.

years 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

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