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  #51  
Old 02-28-2015, 09:16 PM
ard ard is offline
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Originally Posted by forum1 View Post
It seems to me like a highly over engineered system.
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Agree.

One reason for NOT having the battery show up in CBS, is then BMW will have to pay for it under the maintenance plan.... but thats just me being cynical
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  #52  
Old 03-03-2015, 11:27 AM
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One reason for NOT having the battery show up in CBS, is then BMW will have to pay for it under the maintenance plan.... but thats just me being cynical
A healthy dose of cynicism seems obligatory when it comes to this stuff. But on that note, and my comment about nominal battery life, if the typical battery lasts long enough to exceed the 4 year/50k mile threshold then the Maintenance Program would not apply.

I don’t know how much thought BMW put into it, but maybe they were not comfortable with the projected number of batteries that would fail prior to 4 years/50k miles. Or maybe they felt too many customers would complain about healthy batteries being in CBS and showing a projected replacement interval that was beyond the Maintenance Program coverage period. It just seems to me that the battery is a prime example of something that should be in a CBS type display, regardless of it being due in or out of warranty.

Alternatively, if it’s so important to register the battery, they could allow the battery to be registered/reset similar to the way the TPMS is reset by a user. While not ideal due to lack of CBS estimated replacement duration, not to mention the increased likelihood of accidental/improper reset (reset via CBS service menu is a bit more protected), I’d be satisfied with at least this ability to reset upon replacement.

I think it comes down to consistency in design philosophy and implementation, as there are makes with models that don’t allow you to swap TPMS sensors without using a special hardware/software tool. Thankfully BMW doesn’t do that, but they failed in applying the same philosophy to the vehicle’s battery.
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  #53  
Old 03-03-2015, 07:19 PM
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^ Remember they sell a 6/100 maintenance extension. Covering a battery would almost surely add $300+ to that plan. At a minimum. So cars will need batteries sooner due to BMWs silly charging algorithms. Actually BMW has a 'driving distance histogram' that dealers can call up in order to deny warranty claims/blame the owner. They even cover their legal bases on this specific issue with a curious little advisory in the manual. I expect they have put quite a bit of thought into this....

And why would they make the battery change user resettable?! There is absoultely nothing in it for them to make these cars less 'mysterious'...read through the manual, it is nothing but a litany of "go to your SAV center" for EVERYTHING. "Dont open the hood- its a special BMW that is only serviceable by the BMW priests"

And making it harder to swap TPMS sensors, DON'T give them any new ideas....
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  #54  
Old 03-05-2015, 12:37 PM
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^ Remember they sell a 6/100 maintenance extension. Covering a battery would almost surely add $300+ to that plan. At a minimum.
Right. I was just addressing what the car comes with and working within those parameters. I’m sure BMW would adjust the program extension price to maintain the desired profit margins.

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And why would they make the battery change user resettable?! There is absoultely nothing in it for them to make these cars less 'mysterious'...read through the manual, it is nothing but a litany of "go to your SAV center" for EVERYTHING. "Dont open the hood- its a special BMW that is only serviceable by the BMW priests"
Yup, clearly BMW wants the vehicle back to dealers for service. As much as I dislike this notion, BMW is not alone in this endeavor. Every time I turn around I see another car maker implementing a feature in a way that arbitrarily requires dealer service. That doesn’t change my observations about inconsistencies in design and how BMW could or should do things, in my opinion. One can always dream, right? Also, there are instances where if enough people complain, and are clear on what they want, the manufacturer actually makes a change.

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And making it harder to swap TPMS sensors, DON'T give them any new ideas....
To your earlier point, I'm sure BMW has given this thought as well. But they decided that being able to do seasonal tire/wheel changes using a second set of mounted sensors or being able to replace the sensors when the embedded battery dies is not something that should require a dealer visit. That's the type of logic that makes me want to buy a given car vs. looking for something else. Of course at some point you have to compromise because there is no vehicle that scores perfectly in the design for serviceability category. At any rate, this BMW battery silliness definitely goes in the con column for me.
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  #55  
Old 03-05-2015, 01:40 PM
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Another angle manufacturers are using, the more simple tasks that require dealer service, the more chance they have in putting your butt into a newer model that they want you to trade up to.

In effect, an unwanted test drive of a new BMW, and the CEO saying I WANT!!!
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  #56  
Old 03-05-2015, 02:29 PM
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Agree.

One reason for NOT having the battery show up in CBS, is then BMW will have to pay for it under the maintenance plan.... but thats just me being cynical
For the N63 vehicles, they are under the revised maintenance but you need to be under the initial 4/50k.
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  #57  
Old 04-08-2015, 03:59 PM
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Newbie here, trying to be helpful. Would not volatile memory loss be prevented by use of a charge maintainer, a low current 12 nominal VDC supply across the battery terminal leads?
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  #58  
Old 04-08-2015, 04:25 PM
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Why not just use the charging points under the hood? Far safer and the charging cables won't be in the way. BMW also doesn't want you to charge the battery the way you described...RTFM.
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  #59  
Old 05-09-2015, 05:42 PM
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hello need a little help I got the same battery for my e70 MegaTron Plus/Interstate Battery. MTP-49/H8100 AH registering all the same steps and I get this error can someone help

error_ecu_conditions_not_correct_or_request_sequen ce_error
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  #60  
Old 11-04-2015, 05:07 PM
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I can't believe it's this 'hard' to change a freaking battery! all my life it's just swap out the old in put in the new and voila you're in business

anyways, I bought the Carly adapter and the BMW What app for iOS so I can register the new battery, my wife's new to us X5 is a 2008 3.0si still on the original battery and I want to get it swapped out before the cold of NJ winters sets in. I don't have experience with AGM batteries other than putting one meant for snowmobiles into my e36 M3 track car since it's tiny and ultra lightweight. How can I tell which battery to buy AGM or not? I took a look in the trunk and I see the current battery does have a vent and it says 900cca on it, can I tell AGM or not without removing it and seeing if it has water in it? I want to make sure I buy the correct battery since replacing the battery in these cars is not as straightforward as my experiences with e30s/e36s/e39s/e46s and non-BMW cars

Is there any chance of the modules flaking out while unplugged? I'm also going to be replacing front right passenger seat belt receptacle while the battery is unplugged since it 'exploded' likely in the accident the car was in previously
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Last edited by bjerols; 11-05-2015 at 10:15 AM.
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