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6 Series
The 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 09-11-2009, 05:12 PM
NWS Alpine NWS Alpine is offline
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Battery replacement time

Well seems like I need to get my battery replaced. When I start my car the past day or two it sounds like it's slow to turn over. I was cleaning the interior last weekend and the battery drained in about 15 mins with the radio on and the car off. I jumped it properly and drove it to west palm so it charged up and had no issues but over the week it slowly drained due to me not driving it far/often. The battery warning is present on the iDrive and the indicator on the battery is black which by the label says the gel has almost no charge. It's not yellow which states it needs to be replaced but I have an appointment tomorrow at 9am to get it replaced.


I called one dealer and they said it the battery was only covered for 2 years and it would be $300 to replace. I called up the next one down the street and they said it was covered (I'm still under factory for a couple months). Anyone know for sure if it's covered under the factory warranty?
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  #2  
Old 09-11-2009, 06:22 PM
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BlaZinMJ3 BlaZinMJ3 is offline
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yes it is covered under factory
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  #3  
Old 09-11-2009, 11:01 PM
blee blee is offline
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Quote:
Originally Posted by BlaZinMJ3 View Post
yes it is covered under factory
There seem to be a few threads in this forum that may indicate otherwise, in cases where the owner has a "driving profile" that shows an excessive number of short trips in the car. This is what my dealer told me when I was experiencing some low battery issues a couple of months back. In those cases they told me it would NOT be covered under warranty, and when I called BMWNA they pretty much said the same thing.
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  #4  
Old 09-12-2009, 06:25 AM
3Pedals_6Speeds 3Pedals_6Speeds is offline
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I imagine they would have a very difficult time defending that if it isn't in the warranty as "blah blah blah, you have to have an average driving leg of X distance/time to preserve the battery warranty." I'd ask them to show you where that language is in the warranty.
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  #5  
Old 09-12-2009, 06:57 AM
Sandlapper Sandlapper is offline
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I have an 08 650i and also had the same battery condition problem as yours. Local dealer replaced the OEM battery under warranty but advised I get a BMW battery charger to keep it from discharging during periods of inactivity (week at a time, etc). I took the advice and use the charger if I'm not driving the car much. I also have a voltage meter which I use to see if the voltage drops to levels below what is recommended. A little bit of a hassle but this solution is working well for me.
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  #6  
Old 09-12-2009, 10:59 AM
NWS Alpine NWS Alpine is offline
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So everything went smoothly. I went to Vista BMW in Pompano Beach. My service advisor was Pete so any local guys I would reccomend him. I went in and told them my issues and he took care of me. Battery was replaced no questions asked and they also changed the oil since it was due in 1,900 miles. The tech working on my loved it other than he complained about it being so low :P he had to use a jack instead of the lift. He asked me before he was done if i wanted it washed since he prob knew I would say no. Would have walked out with no charge but I made a trip the the parts department and bought a couple things. I got the all weather trunk mat and cargo net. I also got a quart of oil and the case for it. It has some wipes and paper funnels to add it without making a mess. It also has velco on the back of the case so you just stick it to the side inside the trunk. Good thing to have since our cars eat oil.
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  #7  
Old 09-12-2009, 01:10 PM
WGMc WGMc is offline
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Does the battery have to be replaced at the dealer? My car had the battery replaced in May (before I bought the car) and the dealer told me BMW was the only one that could change the battery due to sensors having to be powered up after replacement. Sounds kinda strange but this is my first bimmer.
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  #8  
Old 09-12-2009, 02:36 PM
NWS Alpine NWS Alpine is offline
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Quote:
Originally Posted by WGMc View Post
Does the battery have to be replaced at the dealer? My car had the battery replaced in May (before I bought the car) and the dealer told me BMW was the only one that could change the battery due to sensors having to be powered up after replacement. Sounds kinda strange but this is my first bimmer.
You can change it yourself. You might trip a check engine or alert if any systems don't start up properly once they regain power. The tech doing my battery had a hard time getting rid of a code. He has to keep resetting it and now it's fine. I don't know the exact procedure to reset everything but I believe you can do it yourself.
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  #9  
Old 09-12-2009, 05:31 PM
blee blee is offline
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If changed by the dealer they will "register" the battery using some type of device that syncs up the battery to the car's internal computer. If the battery is not registered then I believe there's a chance for bogus battery alerts to occur...at least that's what I can gather from reading other posts on this topic.
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  #10  
Old 09-12-2009, 05:40 PM
NWS Alpine NWS Alpine is offline
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Quote:
Originally Posted by blee View Post
If changed by the dealer they will "register" the battery using some type of device that syncs up the battery to the car's internal computer. If the battery is not registered then I believe there's a chance for bogus battery alerts to occur...at least that's what I can gather from reading other posts on this topic.
Not sure if that is a specific process only BMW does or if it just happens with the regular reset clearing of the codes. There is a cable that links the battery diagnostic to the onboard system. It would be interesting to find out the process.
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Mods: OEM style 249 19" rims, H&R 10mm front spacers and 12mm rear spacers, KW v3 coilovers, Magnaflow exhaust (x-pipe, mufflers, resonator delete), RPi scoop, BMC filter (charcoal delete), LED angel eyes, 30% tint, OEM iPod interface, AC Schnitzer aluminum pedals, black kidney grill
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  #11  
Old 09-19-2009, 05:21 PM
agorski agorski is offline
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I just went to Sears and paid $180 for a better quality battery installed. Haven't had any issues at all.
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  #12  
Old 09-19-2009, 05:29 PM
blee blee is offline
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Did you attempt to have the battery registered? If you haven't done so already please take a look at this thread:

http://www.bimmerfest.com/forums/sho...d.php?t=356897

One of the "experts" there claims that the battery must be registered and must either be OEM or a spiral-cell type.
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  #13  
Old 09-20-2009, 01:50 PM
agorski agorski is offline
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Thanks for the link. I've had this battery for 9 months without any warning messages or other signs of problems. So I think I'll just leave sleeping dogs lie.
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  #14  
Old 09-21-2009, 03:23 PM
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E92-Lighting E92-Lighting is offline
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yea, its covered under factory warranty
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  #15  
Old 12-29-2009, 08:07 AM
Keif Keif is offline
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Quote:
Originally Posted by blee View Post
Did you attempt to have the battery registered? If you haven't done so already please take a look at this thread:

One of the "experts" there claims that the battery must be registered and must either be OEM or a spiral-cell type.
TIS says that you have to register the battery after each replacement. On the 7's, the power module will continue to use old seasonal values and temporal values for evaluating the battery if it's not registered. I'd have to look up the documents on the 6, but it's likely for the same reasons.

For reference, the E63/E64's (6's) take the same battery as the E65/E66 (7's), a type 49 AGM (absorbent glass mat).
Example of an appropriate battery --> here.

Battery registration can be done using INPA or DIS.
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Last edited by Keif; 12-29-2009 at 08:11 AM.
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  #16  
Old 12-29-2009, 08:25 AM
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Leslierc Leslierc is offline
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Very informative and good information. Thanks NWS Alpine!
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  #17  
Old 01-16-2010, 11:54 AM
bokmeipai bokmeipai is offline
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Quote:
Originally Posted by Sandlapper View Post
I have an 08 650i and also had the same battery condition problem as yours. Local dealer replaced the OEM battery under warranty but advised I get a BMW battery charger to keep it from discharging during periods of inactivity (week at a time, etc). I took the advice and use the charger if I'm not driving the car much. I also have a voltage meter which I use to see if the voltage drops to levels below what is recommended. A little bit of a hassle but this solution is working well for me.
What is the recommended voltage level ?
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  #18  
Old 01-17-2010, 01:54 PM
TXT650i TXT650i is offline
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I had a similar problem a couple of weeks ago:

http://www.bimmerfest.com/forums/sho...d.php?t=423610

I was told that the battery is a special battery and must be the right one or you will get all sorts of false alerts in the iDrive system, it has to be a minimum 900CCA (Cold Cranking Amps).
The dealer gave me a load of BS about the batteries being on back order and there weren't any in the country, I called another dealership and they had two in stock, I called my dealership back and told them and they said they "weren't allowed" to go get it, I called BMWNA and the next day my car was ready!
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  #19  
Old 01-17-2010, 07:24 PM
Sandlapper Sandlapper is offline
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battery charge level

Quote:
Originally Posted by bokmeipai View Post
What is the recommended voltage level ?
Shouldn't drop below 50%. Here are the percentage charges for the 650 battery.
Open Circuit Voltage-State of Battery Charge

OCV
(State of Charge)

12.65 volts
100%

12.45 volts
75%

12.24 volts
50%

12.06 volts
25%

11.89 volts
Discharged
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  #20  
Old 01-18-2010, 02:02 PM
blee blee is offline
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This thread also has some very useful information:

http://www.bimmerfest.com/forums/sho...=356897&page=2
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  #21  
Old 10-15-2012, 08:52 AM
Grpre95 Grpre95 is offline
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How can you check on the battery if its almost dead....does it show on the battery itelf. BTW 650I BMW has a a standard 850CCA
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  #22  
Old 10-15-2012, 10:34 PM
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Quote:
Originally Posted by Grpre95 View Post
How can you check on the battery if its almost dead....does it show on the battery itelf. BTW 650I BMW has a a standard 850CCA
The quickie way is to check the "magic eye" little window on top of the battery. If it's black the battery is probably near the end of it's life.

To be sure, you should take it to the nearest Pep Boys/Auto Zone and have it load tested - they do it for free.
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  #23  
Old 10-16-2012, 12:46 PM
Grpre95 Grpre95 is offline
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Quote:
Originally Posted by Yorgi View Post
The quickie way is to check the "magic eye" little window on top of the battery. If it's black the battery is probably near the end of it's life.

To be sure, you should take it to the nearest Pep Boys/Auto Zone and have it load tested - they do it for free.
I would if I could get the car started.....i need to jump started....the battery is dead
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  #24  
Old 10-16-2012, 04:32 PM
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Quote:
Originally Posted by Grpre95 View Post
I would if I could get the car started.....i need to jump started....the battery is dead
I would pull out the battery and bring it in to the store, it takes about 5 min to remove.

Have you tried trickle charging it?
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