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X3 E83 (2004 - 2010)
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Old 08-28-2014, 05:07 PM
JOED14$ JOED14$ is offline
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Location: naples fl
Join Date: Aug 2014
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Mein Auto: 2007 bmwx3
2007 bmw x3 - Will the tranny go?

I have a 2007 x3 that has been amazing, virtually trouble free for 97,000 miles, but has always
had rough downshifting at very low speeds, and an occasional hard down shift at higher speeds, but nothing scary, or life threatening. I love the car and want to hang on to it, but worry that the tranny will fail.
I have read about the really bad experiences on this tranny. anybody driving one like mine, any ideas.
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Old 08-29-2014, 06:49 AM
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tim330i tim330i is offline
Location: Boston
Join Date: Dec 2001
Posts: 5,886
Mein Auto: Ti Silver 03 M3
Welcome to Bimmerfest! I've moved your question to the E83 X3 forum, you'll get more help in here.

Good luck,
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Old 08-29-2014, 07:33 AM
UncleJ UncleJ is offline
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Location: Silicon Valley
Join Date: May 2006
Posts: 6,549
Mein Auto: '06 X3
Nothing lasts forever -- and automatic transmissions, even with fluid and filter changes, are no exception. That said, you may well be looking at a rebuilt box in your future. These are GM boxes and so can be easily rebuilt by the professional rebuilders in your area -- the ones who rebuild boxes for the trade, not the franchise outfits. I would expect to pay around $3.5K for a quality rebuild around here (had a Tahoe box rebuilt at 180K miles for that). Before you do that however try getting a fluid and filter change in your present box -- it might hold off the rebuild for another couple of years. Good luck!
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Old 08-29-2014, 07:49 AM
swampX3 swampX3 is offline
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Location: New Orleans
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Posts: 679
Mein Auto: X3 and 330
search for resets etc

some folks have had good success getting the software updated and doing an adaptations reset ..... a good place to start an info search ....the 07 era had its gremlins that were successfully addressed by many
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Old 08-29-2014, 09:01 AM
joylove joylove is offline
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Location: USA
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Mein Auto: 08 e83 LCI
Change fluid in the transfer box (use BMW fluid only), rear diff and gearbox.
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Old 08-30-2014, 04:31 AM
mtbrdad mtbrdad is offline
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Mein Auto: 2007 X3.0si
I would bet you'll have many other things to worry about before the tranny fails, it's a GM 6L45R transmission here's a little info about it http://en.m.wikipedia.org/wiki/GM_6L50_transmission. I'm not sure what this transmissions current failure rate is , but I'd bet with a little digging around you may be able to find it and I would bet it's relatively low compared to previous band type transmissions.
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