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Old 11-11-2019, 01:05 PM
Mia328xi Mia328xi is offline
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transmission fluid deteriorated

On my 2007 328xi coupe, I get a 00578E error code, transmission fluid deteriorated.

Does that mean it is low? Bad?

I thought BMW does not recommend changing transmission fluid
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  #2  
Old 11-11-2019, 03:47 PM
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banglenot banglenot is offline
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There are many threads concerning the right time to change auto tranny fluid.

ZF: ZF recommends a max of 70K miles. BMW says 100K miles on it's ZF's.

GM (which you likely have in this model): On the GM, I've not been able to find the GM recommendation, so I use the ZF 70K mi one. Review this: https://www.bimmerfest.com/forums/sh....php?t=1042993 It discusses the GM, and apparently that tranny has a fluid condition sensor. I changed the filter and fluid on my '07 328xiT with Dex VI synthetic at 103K.

Almost no one now says "lifetime" as was proposed by BMW ten-fifteen years ago. It just isn't true.

You may also be seeing the change fluid flag on your transfer case, controlling your AWD activity. That happens around 100K or so. May not light the SES light, but does come up under ISTA+ diagnostics.
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Last edited by banglenot; 11-11-2019 at 03:49 PM.
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Old 11-11-2019, 05:27 PM
Mia328xi Mia328xi is offline
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Mine just hit 100k miles so I'm am guessing that has something to do with it. I will plan to change the fluid and filter then find someone with a fancy code reader to reset the code. Thanks
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Old 11-11-2019, 05:58 PM
nsjames nsjames is offline
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Quote:
Originally Posted by banglenot View Post
There are many threads concerning the right time to change auto tranny fluid.

ZF: ZF recommends a max of 70K miles. BMW says 100K miles on it's ZF's.

GM (which you likely have in this model): On the GM, I've not been able to find the GM recommendation, so I use the ZF 70K mi one. Review this: https://www.bimmerfest.com/forums/sh....php?t=1042993 It discusses the GM, and apparently that tranny has a fluid condition sensor. I changed the filter and fluid on my '07 328xiT with Dex VI synthetic at 103K.

Almost no one now says "lifetime" as was proposed by BMW ten-fifteen years ago. It just isn't true.

You may also be seeing the change fluid flag on your transfer case, controlling your AWD activity. That happens around 100K or so. May not light the SES light, but does come up under ISTA+ diagnostics.
GM 6l is 45K severe duty, 97.5K for normal service.

that's what GM says for the cadillac models using the same trans.
says do the filter when you change the fluid.

70K is probably a safe average number.
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Old 11-11-2019, 08:23 PM
wilt wilt is offline
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Last edited by wilt; 11-11-2019 at 08:39 PM.
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Old 11-14-2019, 12:50 PM
07whitebmw328i 07whitebmw328i is offline
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Getting the same code.... I dropped the pan, changed filter, and top off the fluid. However, I still get the same error code every time I scan/reset with the code reader. Is there anything I might be missing when I did the maintenance?
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Old 11-14-2019, 02:16 PM
wilt wilt is offline
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The transmission is a Condition Based Service sensing unit, so perhaps the connection to the sensor got disrupted, or the sensor has gone bad. Or perhaps the CBS needs a Reset status.

Last edited by wilt; 11-14-2019 at 02:19 PM.
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Old 11-14-2019, 02:35 PM
Yukoner Yukoner is offline
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FWIW and it's merely my own opinion - vehicle owners (in general, not BMW specific) go way too long between automatic transmission fluid and filter changes. I presume it's because the cost is substantially higher than, say, an engine oil change. For my X1, it's a ~$1,500.00 USD maintenance item.

Personally, I'd be changing the fluid and filter every ~4 or ~5 years, or every ~40K miles.

I've had my 335i and 328i both done within the last 2 years (with less than 10K miles driven since). My X1 will need it done next year, as it's approaching ~79K miles and I doubt the previous owner(s) ever did it before.
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Old 11-15-2019, 10:17 AM
nsjames nsjames is offline
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you can reset the fluid life in ISTA.
I never got to the deteriorated fluid message so I can't say for sure if that resets it, but probably.

it reset for my transfercase when I changed the fluid and hit the button in ISTA.


It's time for me to change the fluid again anyhow. 50K miles.
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Old 11-15-2019, 10:17 PM
gbalthrop gbalthrop is offline
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Quote:
Originally Posted by nsjames View Post
you can reset the fluid life in ISTA.
I never got to the deteriorated fluid message so I can't say for sure if that resets it, but probably.
it reset for my transfercase when I changed the fluid and hit the button in ISTA.
My 2007 328xi E91 had the GM6 "578E" Oil Wear Fault appear @ ~ 132,000 miles, and the Transfer Case had "54C6" Oil Wear Fault appear at ~ 133,000 miles. After changing Transfer Case Fluid, I was able to CLEAR the 54C6 TC fault and it has NOT returned.

NO SUCH LUCK with GM6 Fault. After Changing filter & TWO drains & refills of Dexron VI (about 6.5 Liter of new fluid each time, about one year elapsed between procedures), 578E Fault IMMEDIATELY returns after clearing. Resetting Transmission Adaptations does NOTHING. All using INPA.

So if you have ANY clue what ISTA does when you "reset the fluid life", please advise. My SWAG is that the GM system is quite different from BMW, and it simply uses a mileage counter, or something similar and is "RESET" to a new "count" of whatever, when the proper signal is received. IF So the question becomes, WHAT does ISTA call that signal, and what do you see on any screen in ISTA when you "Reset fluid life". I do NOT find anything about "fluid life" in INPA, NOR do I find anything that suggests there is an "oil quality sensor" in the GM6, similar to BMW's OZS for oil quality at the oil sump. My best guess is that BMW did NOT want to share information with GM, or more likely vice-versa.

BTW, my GM6 has NO other faults, and has NO shift performance issues, whether driven easy or hard, WOT shifts 1-2, 2-3, or 3-4, etc.

Thanks,
George
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  #11  
Old 11-16-2019, 07:54 AM
nsjames nsjames is offline
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who knows what it does.

at 150K miles mine still doesn't display anything about fluid deterioration.

AFAIK there's no means for the trans itself to monitor the fluid condition with a dielectric sensor, so I assume you're right that it's entirely a software based timer of some sort.

it would be nce if there were an option like the oil life to simply delete it, or set it to a fixed mileage.

I don know that the bimmer geeks people told me the GM6 has issues with the can adapters. Perhaps it's a failure of the adapter to actually reset it?
an ICOM adapter is on my short list of things to purchase soon. I want to flash my transmission to 330 things.
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