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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 01-17-2009, 03:26 PM
david892101 david892101 is offline
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Mein Auto: E65 745i
745i Recharge Battery Warning when sitting in car with ignition on

If I am In the Car Listening to the Radio with the Engine Off I get a Recharge Battery Warning after a Couple of Minutes.
I have read the Threads and have Replaced the Battery.
I still get this Message Every Time the Engine is Off. Any suggestions?
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  #2  
Old 01-17-2009, 03:51 PM
johndade johndade is online now
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Mein Auto: 2002 bmw 745li
Dont run electronics with engine off eventually you will get that error message. These cars need to much juice to do that.
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  #3  
Old 01-17-2009, 04:06 PM
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csmeance csmeance is offline
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was the new battery programed to the car?
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  #4  
Old 01-18-2009, 01:53 AM
david892101 david892101 is offline
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No I have not done that!
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  #5  
Old 01-18-2009, 02:34 AM
stonedjoseph stonedjoseph is offline
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program you battery first to your car.. then tell us what happened..
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  #6  
Old 01-18-2009, 05:04 AM
srtbeem srtbeem is offline
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If you want to listen to the audio system with the car off, stop the engine and take the key out, then push the volume control that is next to the cd slot. Now only the audio is on and not the whole electrical system and your battery won't be as taxed
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  #7  
Old 01-22-2009, 09:14 AM
journeyfan journeyfan is offline
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My 745 does this still after a new battery and regognition at a BMW dealership.
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  #8  
Old 01-22-2009, 09:40 AM
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jgriffith007 jgriffith007 is offline
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Quote:
Originally Posted by journeyfan View Post
My 745 does this still after a new battery and regognition at a BMW dealership.
+1, I have a brand new battery and if I just listen to the radio for less than a minute after shutting it off, I am having the same problem.
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  #9  
Old 01-25-2009, 07:49 PM
mgokool mgokool is offline
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+1 same problem here....

Quote:
Originally Posted by jgriffith007 View Post
+1, I have a brand new battery and if I just listen to the radio for less than a minute after shutting it off, I am having the same problem.
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  #10  
Old 02-05-2009, 05:29 AM
mgokool mgokool is offline
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Have my car at the dealer getting serviced, mentioned this problem again...first few times they said "cannot duplicate problem."....now this time i get a call back and they tell me it's not a bmw battery thats installed in the vehicle. I had bought the vehicle from a NON-BMW dealer...on the car fax it shows as the battery was replaced...dunno by who...anyways, they want to replace the battery with a BMW battery and re-program it to the vehicle....

heres the best part....SA is telling me its a $850 job! The battery is $244 and the rest is labor! I have no choice, We all know these cars are computers on wheels, last thing I need is to say no and they mess something up and say my "non-bmw" battery caused this failure and its not covered....cuz they started mentioning that this is a future possibility...

Numerous owners on here have paid some very low prices while some of us are getting killed with pricing....what can one do...why dont they have a standard price....geeeez!
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  #11  
Old 02-05-2009, 07:41 AM
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jgriffith007 jgriffith007 is offline
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I had an issue with my nav and my stereo cutting out. They said I did not have a factory battery and that my battery did not have enough cranking amps so I had to buy a new battery from the dealership that was only $300 and some change and that was installed. They said it did not require programming and now I am having this recharge battery pop up. good thing is I have an awesome SA that is going to get it checked out since the warranty is expired. My generic battery never had any issues.
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  #12  
Old 02-06-2009, 11:53 AM
bembo19 bembo19 is offline
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i also have this warning come up but ignore it ! why dont you do the same !!? battery was replaced at a specialists with over 30 years in the business so i'm sure if programming was the cure he would have done it at install ! i just think that with the amount of electric kit on these cars it makes sense to remind the owner when using the power without the engine running !!
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  #13  
Old 02-06-2009, 07:45 PM
745ByMySide 745ByMySide is offline
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Quote:
Originally Posted by bembo19 View Post
i also have this warning come up but ignore it ! why dont you do the same !!? battery was replaced at a specialists with over 30 years in the business so i'm sure if programming was the cure he would have done it at install ! i just think that with the amount of electric kit on these cars it makes sense to remind the owner when using the power without the engine running !!
If you keep ignoring it, sooner or later you will be left stranded in the middle of nowhere. I say when it comes to these cars, use OEM parts because it will save you in the long run. just my .02
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  #14  
Old 09-24-2009, 08:28 AM
jogger35 jogger35 is offline
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where is the battery located in 745
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  #15  
Old 09-24-2009, 12:34 PM
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Seven11 Seven11 is offline
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trunk
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  #16  
Old 09-24-2009, 01:58 PM
bembo19 bembo19 is offline
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i'm still ignoring it and cars fine ! i'm going to try taking the key out though ! just out of curiosity !
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  #17  
Old 11-11-2009, 02:41 PM
AQ 745i-03 AQ 745i-03 is offline
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see if it is the boomerang system.
bmw told me thats the reason why the battery was draining.
i called boomerang and they said that if you leave the keys in the ignition, the systems stays activated. the keys have to be atleast 30 feet away for the system to shut off.

bmw was going to charge me 2 hours of labor at 125/hr to remove the boomerang system.
i called boomerang and they said they could remove it for 40 bucks.
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  #18  
Old 11-11-2009, 07:25 PM
badgerbob badgerbob is offline
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How can does the battery get programmed? Is this a dealer only for OEM only battery? Or could an aftermarket shop handle this task? Anyone had any luck with someone other than a dealer?
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  #19  
Old 11-12-2009, 06:29 PM
cjennjr cjennjr is offline
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My car was doing the same thing - I could only listen to the radio for two minutes before that dreaded msg popped up. Since then, I've had another OEM battery installed (under warranty), but I turn the radio/CD (key fob out of slot) on via the button located on the left side of the cd player. No "battery low" msgs have popped up, and I've listened to my CD's for at least 30 minutes.
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  #20  
Old 05-22-2010, 04:41 PM
Nader UK Nader UK is offline
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Quote:
Originally Posted by Seven11 View Post
trunk
amazing ride....

I have the same AC kit on my 745.... I want to lower it, how low did u lower urs? and is the front dipped? Also my 7 didnt come with xenons, did ur HID fit ok? I checked under the hood and there seems to be not much space?
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  #21  
Old 05-23-2010, 11:17 AM
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t_clealy t_clealy is offline
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On these 7s, everytime you replace the battery, I was told, you must reprogram the new battery to car or that battery WILL NEVER exacpt the charging system. Don't ask me why. Checking the charging system all the way from under the hood to the battery terminals, charging system is great. It just won't go into the battery. The PM ( Power Module ) has a lot to do with this.
Now...aftermarket battery or OEM almost doesn't matter or it might as long as you buy the right CCA ( Cold Cranking Amperage ) and AH ( Amp Hour ) ratings. The BMW must look at your battery then the Tech will reprogram it accordingly, regardless of brand.
And here's one way to replace battery avoiding the reprogramming by hooking up a known good battery to the terminals under the hood prior to replacing the new battery. With this prosedure...Some say it worked for them and some say no.
Personally, if the batteries are somewhat fairly new, because you choose this one over the other, and you wanna do it this, it might work. But...if the battery is OLD and you're going to replace it and trying avoid the charge of registering the battery, it is not going to work. Because the PM would still recognize it as it is still an OLD one.
Does that make sense ???
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  #22  
Old 05-24-2010, 06:45 PM
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patshah patshah is offline
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Register the battery
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  #23  
Old 05-25-2010, 06:44 AM
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t_clealy t_clealy is offline
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I know it's soooooo saaaaaad, driving this kinda car, and you can not enjoy your radio while sitting in the car waiting for someone without having to running your engine. It sucks !!!
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  #24  
Old 07-20-2010, 09:39 PM
iblanky1 iblanky1 is offline
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Mein Auto: 2002 BMW 745Li
Same here

I've been having the same issues, I let my car sit for a while (maybe a month) starting it every now and again, and now that I've started driving it again, it wont hold a charge for a whole 8 hours at the job, I keep my jump box in my trunk just in case it goes on me ... then I get weird messages when I try to crank it like ... transmission failure, DTC inactive, parking brake malfunction, stuff like that. Weird.
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  #25  
Old 07-21-2010, 09:29 AM
Keif Keif is offline
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Time for a new battery. Many modules freak out and protect themselves by turning off when low voltage is seen.

Last edited by Keif; 07-21-2010 at 09:30 AM.
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