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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 07-08-2013, 02:52 PM
MR.BM745Li MR.BM745Li is offline
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hello guys.my 1st post

i just bought my 02 745li about 2 months ago...2 days ago it gave me this massage"parking brake malfunction''yesterday this pop up''recharge battery''also dsc malfunction!" I went to start the car this morning everything was shut no power at all.the battery died completely...I need ya help please
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  #2  
Old 07-08-2013, 03:00 PM
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1bad540 1bad540 is offline
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Your battery is dead guy, may as well chek the alternator too.
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  #3  
Old 07-08-2013, 03:22 PM
MR.BM745Li MR.BM745Li is offline
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what about these messages right before the battery dead
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  #4  
Old 07-08-2013, 03:24 PM
MR.BM745Li MR.BM745Li is offline
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the battery its only 2 months old
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  #5  
Old 07-08-2013, 03:26 PM
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Quote:
Originally Posted by MR.BM745Li View Post
what about these messages right before the battery dead
most of those errors should be cleared after you either charge your battery
or buy a new 1 & have it registered to the car .

Not to change the subject , but how is the weather out the in Brooklyn ???
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  #6  
Old 07-08-2013, 03:30 PM
MR.BM745Li MR.BM745Li is offline
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its nice and hot here......how do I know if the alternator is bad or should I try to get a jump cable?
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  #7  
Old 07-08-2013, 04:51 PM
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745iguy 745iguy is offline
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hello guys.my 1st post

If ur batt is only 2 months old and it died, either you didn't register it properly or your alt crapped the bed. If u check the alt at a pep boys or auto zone it'll probably test good even if it ain't. Get codes read. If the alt is trash you should have a generator fault in your car even if no check engine light is on. Either way by the sound of things you're going to need an indy.


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  #8  
Old 07-08-2013, 08:51 PM
MR.BM745Li MR.BM745Li is offline
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thanks
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  #9  
Old 07-09-2013, 06:12 AM
Salmantheman Salmantheman is offline
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First of all your parking lights and battery dying are two completely separate issues... Second i have gone through the whole alternator issue 4 months ago so follow these steps


1. Get you battery registered. its a 3 mins process
2. (if it shows the same errors and dyes on you) Jump start the car and after 10 mins of engine running. Pull out the negative terminal. if the Charge dyes on you again, get the alternator replaced.

Best of luck and hope its just a 20$ visit for a battery registration...
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  #10  
Old 07-09-2013, 06:15 AM
MR.BM745Li MR.BM745Li is offline
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hello guys.my 1st post

What's the negative terminal?


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  #11  
Old 07-09-2013, 06:16 AM
MR.BM745Li MR.BM745Li is offline
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hello guys.my 1st post

The car is dead right now I'm going to try get a bust to start the car then take it to a Mec


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  #12  
Old 07-09-2013, 06:58 AM
Salmantheman Salmantheman is offline
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Quote:
Originally Posted by MR.BM745Li View Post
What's the negative terminal?


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in the boot, on the right handside, under the Jack to lift your car, on top of your battery.. there is a Positive terminal and there is a negative terminal...


Take out the negative terminal.
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  #13  
Old 07-09-2013, 06:58 AM
AngelE66 AngelE66 is offline
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Hope its just a battery registration issue only. Good luck
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  #14  
Old 07-09-2013, 07:22 AM
Thesatman Thesatman is offline
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Its funny how many first posts are from people with battery issues. First off welcome to the fest. You will learn a ton hear about your car and if it hasn't been modified yet...you will find tons of things you will want to do.

Now on to your batt/alt issue. First thing to know is that these cars don't use a typical lead acid battery like most cars...they need to have an absorbed glass mat (AGM) style battery. First thing to do is make sure it is of that variety and if not replace.

Second, remove the battery and get a ride to ann autoparts store that has a battery charger. Have them test/charge the battery...again AGM batteries have a different charge setting then lead acid. If it is discharged but not dead expect it to take at least 30-40 min to charge...you may need to just drop it off and come back for it. Once it is recharged it needs to go back in the car, BUT the way this car works as far as charging the battery is also different from most other cars...it needs to be "registered" to the vehicle. This tells one of the many computer modules in the car that there is a new battery in the vehicle and that it should adjust the charge curve as well as re-enable certain things. Yes, i said re-enable...your car starts to shut certain things down when the battery state of charge starts to get low. Now you CAN register the battery yourself but you need a special ODB2 cable and some software you can download. If you do the research and take your time it will be a piece of cake once you get the cable (which you will most likely have to order online). Otherwise you NEED to take the vehicle to the stealership to have it registered...expect to pay around $100. Welcome to owning a BMW

I would do all of that before going to the alternator. Now once all of that is done and IF you are still having problems then there is a "secret" diagnostic menu that you can use to monitor the output of your alternator...just do a search and you will find a tutorial.

If you are planning to ignore this advice and jump start the car make sure you do it from under the hood (there are connections there) and not directly at the battery in the trunk.

When removing the battery look for a switch up on the top of the fuse panel over the battery...move that switch before you remove the battery and switch it back after you install the new one. For what its worth...i would NOT use the disconnect the battery method of checking the alternator...but its your choice. Also be careful removing the battery...remove the negative (black) terminal first and secure it so it isn't going to touch anything or cover it with something insulating like a plastic freezer bag. Be careful removing the positive terminal as well.

Good luck and let us know how it goes.
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  #15  
Old 07-09-2013, 07:26 AM
Piers1989 Piers1989 is offline
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Do your guys power modules not contain coding options for lead acid batteries?

Maybe its different in europe but when I had my battery replaced (was already a lead acid battery in the car when I got it and had been in there 6 years) I just changed the coding line to the appropriate number of AH and chose the option without AGM. I also registered it after the replacement for good practice. (Also it was not coded for AGM when I got it, I only changed it as the replacement was a different capacity).

Haven't had a problem since and the only issue previously was the recharge battery message if sat in the car for a few mins without the engine running.

Just wanted to ask since on this (mainly USA) forum I haven't heard a single person mention this and the battery topic comes up again and again.
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  #16  
Old 07-09-2013, 07:43 AM
Thesatman Thesatman is offline
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Quote:
Originally Posted by Piers1989 View Post
Do your guys power modules not contain coding options for lead acid batteries?

Maybe its different in europe but when I had my battery replaced (was already a lead acid battery in the car when I got it and had been in there 6 years) I just changed the coding line to the appropriate number of AH and chose the option without AGM. I also registered it after the replacement for good practice. (Also it was not coded for AGM when I got it, I only changed it as the replacement was a different capacity).

Haven't had a problem since and the only issue previously was the recharge battery message if sat in the car for a few mins without the engine running.

Just wanted to ask since on this (mainly USA) forum I haven't heard a single person mention this and the battery topic comes up again and again.
I think you are correct and you CAN use a lead acid battery if it is coded for it since they do charge differently...but here in America we are just power hungry.
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  #17  
Old 07-09-2013, 07:46 AM
MR.BM745Li MR.BM745Li is offline
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hello guys.my 1st post

Thanks a lot guys
I really appreciate...I love this site
it.i'm about to remove it battery and take it to auto zone.hope it just the battery...ill let ya know what happen later


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  #18  
Old 07-09-2013, 07:46 AM
Piers1989 Piers1989 is offline
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Thats cool, just a piece of information I thought people may be interested in since a lot of people seem to post on here after they buy a shiny new Lead Acid battery and everyone tells them to buy another new one thats AGM.

Seems to me like if they've already bought the Lead Acid one it would be easier just to get a coding guy to recode the car for Lead Acid and register it rather than replace again!
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Old 07-09-2013, 08:11 AM
Thesatman Thesatman is offline
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Quote:
Originally Posted by Piers1989 View Post
Thats cool, just a piece of information I thought people may be interested in since a lot of people seem to post on here after they buy a shiny new Lead Acid battery and everyone tells them to buy another new one thats AGM.

Seems to me like if they've already bought the Lead Acid one it would be easier just to get a coding guy to recode the car for Lead Acid and register it rather than replace again!
Sometimes finding a coding guy is difficult. While a LA batt is good enough an AGM is still better for these cars since they have so much current draw. (especially in cold climates)
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  #20  
Old 07-09-2013, 08:17 AM
Piers1989 Piers1989 is offline
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Originally Posted by Thesatman View Post
Sometimes finding a coding guy is difficult. While a LA batt is good enough an AGM is still better for these cars since they have so much current draw. (especially in cold climates)
I guess its easier for me since I do it myself and love to tinker :P

Its not that cold in the UK apart form the sudden ridiculous winters, but the car was ok during the bad winter we had this year so I think I should be ok
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Old 07-09-2013, 08:22 AM
Thesatman Thesatman is offline
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Originally Posted by Piers1989 View Post
I guess its easier for me since I do it myself and love to tinker :P

Its not that cold in the UK apart form the sudden ridiculous winters, but the car was ok during the bad winter we had this year so I think I should be ok
I'm sure you'll be fine. But you probably aren't the guy (im sure there are a few on here) that is sitting in the parking lot of some hangout with their L7 amp maxed out and their follow me home lights on to attract the honeys either.
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  #22  
Old 07-09-2013, 08:31 AM
Piers1989 Piers1989 is offline
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Originally Posted by Thesatman View Post
I'm sure you'll be fine. But you probably aren't the guy (im sure there are a few on here) that is sitting in the parking lot of some hangout with their L7 amp maxed out and their follow me home lights on to attract the honeys either.
What do you mean, these are my favourite activities!

But instead of the Logic 7 which I don't have I use my rear blinds (The ladies love it when i slide them up and down ) and I turn on every light possible in and outside the car ^^

On a more serious note I also have the engine running pretty much whenever I'm doing anything in the car and drive long journeys regularly so that is probably more of a factor
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  #23  
Old 07-10-2013, 04:53 AM
MR.BM745Li MR.BM745Li is offline
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hello guys.my 1st post

I charged the battery put it back in the car start right away.i took it to my friend he register the battery for me
Now I'm good.thanks guys.ya the bestClick image for larger version

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