Here is the battery replacement SIB for ALL F15 X5

[Kewl X5]

It is not just for N63TU engines...includes N55 and N57 engines as well...

http://www.bimmerfest.com/forums/sho...5&postcount=12

[Babs]

Interesting and thanks for sharing.

[puckybadger]

I knew there was a reason why the N63TU/50i costs 14K more than the 35i

[Taran.J]

Hmm, well at least I'll only need a battery every 25k

[Xeno]

Thanks for the alert!

[Alan l.]

Seems like an old post. I wonder if my recent build already comes with a 105ah battery. Time to open it up to take a look.....

[Stunnaz]

Hmm, the F16 isn't listed, but it should be right?

[E90Fleet]

Originally Posted by Taran.J

Hmm, well at least I'll only need a battery every 25k

You dont "need it"
BMW are just replacing them as a precaution since many low daily mileage cars arnt getting their batteries charged enough and batteries dont like that.

If you drive enough or charge your battery weekly there is no reason to replace it at that interval when out of warranty.

[xweb10]

What engine does the 35d have?

[Babs]

Originally Posted by xweb10

What engine does the 35d have?

N57

[sssmokie]

Does this mean that the M50D engine (N57S) is also affected? Thanks

[Kewl X5]

Originally Posted by puckybadger

I knew there was a reason why the N63TU/50i costs 14K more than the 35i

The N55 35i engine is also affected and BMW dealer should replace your battery at every 2nd oil change too...

[Kewl X5]

Originally Posted by Alan l.

Seems like an old post. I wonder if my recent build already comes with a 105ah battery. Time to open it up to take a look.....

Well, the SIB is from January 2015. Not sure if there is another one that supersedes the Jan 2015. But anyhow ask your BMW service rep...

[Kewl X5]

Originally Posted by sssmokie

Does this mean that the M50D engine (N57S) is also affected? Thanks

Sorry, this is a SIB for BMW NA and we don't have the M50D in the U.S. (even though it is built in the U.S.)

[stewy604]

New battery at every 2nd oil change?!?! I've run batteries in other vehicles for 5 years / 80,000 kms without issue.

[sonomaX5]

Originally Posted by Alan l.

Seems like an old post. I wonder if my recent build already comes with a 105ah battery. Time to open it up to take a look.....

Is it easy to tell which battery is which? I have a mid-January 2015 build, so I'll have to take a look as well.

[Alan l.]

I will find out. I know its located under the trunk floor with a plastic cover over it. It can't be that difficult to remove to take a peek.

Alan

[DaveChapin]

I noticed in the specifications for the new x5m and x6m that it describes the battery like this:
90 + 50 Ah

So I guess this means those models have *two* batteries?? Or is that some kind of typo?

If so, I wonder if this (significant) extra juice is all for this issue.

[Alan l.]

Another user here with the 50i mentioned that his X5 has two batteries too.

[Ashot12]

Originally Posted by Alan l.

Another user here with the 50i mentioned that his X5 has two batteries too.

Two batteries on 35i

[DaveChapin]

Thanks for the confirmation.
I guess the specs pages for these models are out of date:
http://www.bmwusa.com/Standard/Conte...fications.aspx

That still says the 50i for example has the one 90 Ah battery

[butchlv]

I own 2015 x5 35i, being my first BMW I have learned that if you do not drive it enough your battery will lose it charge. The times that I drive it are short trips in stop and go traffic. Should I trickle charge it weekly.