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E63 / E64 6 Series (2004 - 2010)
The E63/E64 BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

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  #1  
Old 06-10-2015, 08:08 AM
Red_Robbo Red_Robbo is offline
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Location: UK
 
Join Date: Oct 2014
Posts: 35
Mein Auto: 645CI Convertable
New Battery / Codes ?

Hi Folks, me again.
Having had that excess battery discharge for ages now, and my battery showing 12.2 volts even after a long run, am gonna bite the bullet and get a new battery.

I have heard that you need to program the new batter in, is that the case ? Mine is a 2005 645CI, bit older so I might get away with that.

Any advise most welcome.

Cioa for now.
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  #2  
Old 06-10-2015, 10:34 AM
rebel.ranter rebel.ranter is offline
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Location: Cork, Ireland
 
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Mein Auto: 630i, 525i, 320iC
Hi, yes you do need to "register" the new battery to ensure that the correct charging profile is in place for a new battery.
A shop with Autologic, DIS, Rheingold or INPA/NCS Expert to do this.
Your car will drive fine without registering but the battery life will be shortened.
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Current cars
1996 e36 320iC (convertible)
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2007 e63 M6


Previous Cars: 2002 e39 525iA Sport, 1994 e36 318i, 1990 e34 520i, 1989 e30 325i, 1986 e30 316
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  #3  
Old 06-10-2015, 05:47 PM
HerbP HerbP is offline
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If you do decide to buy a new battery, go ahead & buy the AGM. Your current battery might be a lead cell battery? If you have 12.2 vdc, that should be good. Turn the lights on, then check to see how far the voltage drops? This is BMW's suggestion while checking the voltage. Are you getting a lot of random codes at startup?
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  #4  
Old 06-11-2015, 12:28 AM
rebel.ranter rebel.ranter is offline
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Mein Auto: 630i, 525i, 320iC
Quote:
Originally Posted by HerbP View Post
If you do decide to buy a new battery, go ahead & buy the AGM. Your current battery might be a lead cell battery? If you have 12.2 vdc, that should be good. Turn the lights on, then check to see how far the voltage drops? This is BMW's suggestion while checking the voltage. Are you getting a lot of random codes at startup?
Good suggestion. Note that the lead acid to AGM will also need to be reflected in the coding in the cars module (ie, e AGM change needs to be registered.
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Current cars
1996 e36 320iC (convertible)
2006 e63 630i Sport w/SMG
2007 e63 M6


Previous Cars: 2002 e39 525iA Sport, 1994 e36 318i, 1990 e34 520i, 1989 e30 325i, 1986 e30 316
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  #5  
Old 06-11-2015, 02:35 AM
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645/333 645/333 is offline
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The original batteries have always been AGM. You could consider getting a larger battery, the next one up! and still code it the same way. Also worth checking the voltage regulator as, having read so many threads on here, that if it has to work harder due to lower voltage, they seem to fail fairly quickly with people believing they have an alternator failure when they do not!!!!
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  #6  
Old 06-11-2015, 03:05 AM
Red_Robbo Red_Robbo is offline
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Quote:
Originally Posted by HerbP View Post
If you do decide to buy a new battery, go ahead & buy the AGM. Your current battery might be a lead cell battery? If you have 12.2 vdc, that should be good. Turn the lights on, then check to see how far the voltage drops? This is BMW's suggestion while checking the voltage. Are you getting a lot of random codes at startup?
Its just the same alarm, when I start the car - Excessive battery discharge. Funny thing is (yes always a funny with BMW) when I start the car, and then turn the engine off. Start again the alarm does not show, it goes away...

I have checked with altimeter and there is quite drain, pulled all the fused one by one and made no difference.

Read that the battery should be 12.6 volts and mine shows 12.2 even after a long run, so thinking what the hell put a new battery in, maybe (seeing other posts about battery funnies) that this will fix it.

Thanks for the other posts guys, most apreciated.
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Last edited by Red_Robbo; 06-11-2015 at 03:06 AM.
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  #7  
Old 06-11-2015, 06:39 PM
HerbP HerbP is offline
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Quote:
Originally Posted by 645/333 View Post
The original batteries have always been AGM. You could consider getting a larger battery, the next one up! and still code it the same way. Also worth checking the voltage regulator as, having read so many threads on here, that if it has to work harder due to lower voltage, they seem to fail fairly quickly with people believing they have an alternator failure when they do not!!!!
The 2004 to 2005 were lead cell batteries.
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  #8  
Old 06-11-2015, 06:49 PM
HerbP HerbP is offline
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Location: Georgia
 
Join Date: Jul 2009
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Mein Auto: 2005 645Ci & 2007 750Li
Quote:
Originally Posted by Red_Robbo View Post
Its just the same alarm, when I start the car - Excessive battery discharge. Funny thing is (yes always a funny with BMW) when I start the car, and then turn the engine off. Start again the alarm does not show, it goes away...

I have checked with altimeter and there is quite drain, pulled all the fused one by one and made no difference.

Read that the battery should be 12.6 volts and mine shows 12.2 even after a long run, so thinking what the hell put a new battery in, maybe (seeing other posts about battery funnies) that this will fix it.

Thanks for the other posts guys, most apreciated.
Have you been getting any other codes such as Dynamic Drive? This code will usually point to the voltage regulator going bad. I would also check to make sure your hood alarm switch is in place, not keeping the car awake all of the time. On the US cars the switch is at the passenger side cabin air filter. Our cars are temperamental at times, driving us crazy. A new battery is a cheap item, & who knows what might happen?
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  #9  
Old 06-12-2015, 03:29 AM
Red_Robbo Red_Robbo is offline
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Location: UK
 
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Mein Auto: 645CI Convertable
Thanks Herb, its the only alarm I get mate. Will check under the hood as you say for that for that switch.

ADD; Just checked the switch, easy to find. What I have done is un-plugged the wires just to see for a bit if that
stops the battery drain.

Knowing BMW will get something else strange happen now I did that, lol

Thanks again,
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Last edited by Red_Robbo; 06-12-2015 at 04:15 AM.
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