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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 07-24-2013, 09:48 AM
mikewhomiko mikewhomiko is offline
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Location: orange county
 
Join Date: Jul 2013
Posts: 16
Mein Auto: 2004 bmw 745li
power problems

hey, thanks for reading, Iwrote here about a week ago, my battery keeps on dieing. my alternator is great had it checked out twice.I registered new battery and nothing, do u think its the power moduel? or what can it be ? how much does that costs? thanks
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  #2  
Old 07-24-2013, 09:53 AM
fdriller9 fdriller9 is offline
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Mein Auto: '06 AW 330xi
You need to have a current draw test performed on your car and see what modules aren't going to sleep. There is a special command you send to the car to force it to sleep right away, then you can monitor the current draw of all the systems.
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  #3  
Old 07-24-2013, 10:09 AM
mikewhomiko mikewhomiko is offline
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Location: orange county
 
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Mein Auto: 2004 bmw 745li
thanks, how do I do that?
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  #4  
Old 07-24-2013, 11:42 PM
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wjjklj wjjklj is offline
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Mein Auto: 2009 750i
power problems

Use the hidden menu to check your alternator output. Did you replace the battery? Doubt it is the power module.


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  #5  
Old 07-26-2013, 10:56 AM
mikewhomiko mikewhomiko is offline
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Location: orange county
 
Join Date: Jul 2013
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Mein Auto: 2004 bmw 745li
how do i check that? i have had my alternator checked out , it is great.
some people say it is the ism or the power moduel.
yesterday i was driving, my a/c stop blowing as hard, my speakers were shifting from side to side, and then my abs, park, and transmission failsafe light when on.
after i shut it off , and let it sit , it will start up again, and then happen all over again.
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Old 07-26-2013, 11:11 AM
mikewhomiko mikewhomiko is offline
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Location: orange county
 
Join Date: Jul 2013
Posts: 16
Mein Auto: 2004 bmw 745li
Exclamation What is the best option to do? help please!

okay here i am again, i love my 2004 7 series and i want it fix because it is suppose to be reliable. the problems my car has are:

abs, park, brake lights come on while driving somtimes and then the transmission failsafe turns on. i turn it off for a bit then it all goes away for a while.

a/c blows very low speed on max when those lights start to turn on.
my speakers dont sound as well.\

all this happens when those lights to turn on.
ive changes my battery , had it registerd. (twice)
checked the alternator (twice) it is perfect.

people say it is the ISM, the power module , or the alternator.
what can it be?? ive checked the alternator and it is great.
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