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Discussion Starter #1
Hi All,

Been a lurker for a while, but decided to join because I can't find the answer to my question. So much great info on the X3 here!

I have a 2004 X3 with the 3.0 M54, a 6 speed, and 153,000 on the clock. The car has been in limp mode with the dreaded 3 light combo since I purchased it. I've been focused on emissions work and haven't really had time to mess with the transfer case too much.

I have pulled the actuator motor and checked the gear which is just fine. It seems the motor itself may be the issue, but I haven't had time to learn INPA to test just yet. I will, of course, test the motor, change the oil, and check the wiring first.

However, an opportunity has come up to pick up a TC from a 2007 automatic car with 100K on the clock for a very attractive price. It seems like with the ATC400 and the X3, it's not a matter of if, but when on failure, so it seems like a prudent thing to have a spare, if nothing else.

My question is - will the 2007 ATC 400 fit and work without issue in my 2004? The OEM parts listing show my TC with a PN of 27 10 3 455 133, however, the 2007 TC part number is just slightly off with a PN of 27 10 3 455 137. From my searching, it really does appear that the parts differ in some way that they would not be compatible. 133 is for 2004 - 2006 while 137 is for 2007 - 2010.

Does anyone know if the newer TC is interchangeable with the older TC?
 

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Nuclear engineer
02/2012 X5 35d M57Y CPO 99K miles NOKIAN WR G3 12K miles
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From RealOEM, many super sessions of -133, but not to -137

Part number 27103455133. Transfer box. ATC 400

From:03/17/2009To:-Weight:23785.900 kgPrice:
Superseded by:

27103428186 (09/23/2005 - 02/12/2007), nonexchangeable retrospectively27100362791 (09/23/2005 - 02/13/2006), Exchangeable retrospectively
Supersedes:

27107573213 (01/16/2007 - 04/30/2009), Exchangeable retrospectively27107555294 (02/23/2005 - 09/10/2013), Exchangeable retrospectively27107545710 (08/30/2004 - 10/04/2005), Exchangeable retrospectively27107526278 (09/01/2003 - 09/27/2004)

Part 27103455133 was found on the following vehicles:
X3 E83 ***8195; (01/2003 - 07/2006)
X3 E83 LCI ***8195; (03/2006 - 08/2010)
 

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A quick perusal of RealOEM makes it absolutely clear: it may work. ;-)

It appears the basic unit did not change over the years, but there could be small differences - perhaps a threaded hole for a bolt or other slight difference. I can only speculate, but I'm guessing that a determined installer could make it work without too much difficulty.

AM.
 

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OP, when you say "limp mode" what do you mean?
 

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Discussion Starter #7
Thanks for the tips and info folks! I reached out to tcbmwx5 and he informed me that the splines are different between the 04 - 06 TC and the 07 - 10 TC. I believe he said the cutoff is September of 2006. Glad I didn't pick up a transfer case I can't use.
 

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Interesting. The flange part numbers didn't change, so the splines are the same. The rear output shaft might be longer/shorter as the rear driveshaft is not interchangeable. There was one supersession that was common between the two which led me to suspect that whatever differences there were must have been less significant than something like output shaft length. Hmmmmm....

AM.
 

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check that the battery is FULLY charged, even at 12.25V it will not be able to actuate the actuator. 12.5V to 12.7V is normal with the car not running.
 

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AM - now that's interesting. Now I'm tempted to pick it up if the price is right. Worst case, I can use it as a core.
I could be missing something, so don't rely just on what I've said. I've run into similar compatibility/incompatibility issues before on RealOEM. As an example, the towing modules that come with the OE trailer hitch for the E53 has several supersessions and, like the current situation, most say they are exchangeable retrospectively. Well, guess which one I have.... the one that is NOT exchangeable retrospectively. Despite that, when I install it in my X5 that it supposedly doesn't apply to, my lights all work just fine. Makes it hard to know when to believe and not believe what they say.

AM.
 

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Discussion Starter #12
Gaspain - thanks for the tip! The battery seems like a relatively new Interstate battery, but I'll do a voltage check before testing the actuator motor.

I could be missing something, so don't rely just on what I've said. I've run into similar compatibility/incompatibility issues before on RealOEM. As an example, the towing modules that come with the OE trailer hitch for the E53 has several supersessions and, like the current situation, most say they are exchangeable retrospectively. Well, guess which one I have.... the one that is NOT exchangeable retrospectively. Despite that, when I install it in my X5 that it supposedly doesn't apply to, my lights all work just fine. Makes it hard to know when to believe and not believe what they say.

AM.
AM - I hear you man. I recently searched for a new seatbelt on bimmercat and realoem. I provided my specific VIN and there is no indication as to having force limiting belts or not. I made the command decision that if an airbag is present, then a FL belt is called for.

It is interesting that there is an overlapping superseding part though. Regardless, I think I'll do OK in picking up a bunch of spare parts I need from this 07 x3.

Thanks for everyone's help!
 
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