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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 06-30-2013, 12:05 PM
Moik Moik is offline
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xdrive temporary deactivation

Hi, I would like to deactivate x-drive for short time and test purposes on mud, wet grass, snow etc. just to test how RWD makes so I can decide about next BMW.

Does anybody know, what is the easiest safe way do do this? Error msgs doesnt matter.
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  #2  
Old 06-30-2013, 12:26 PM
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tturedraider tturedraider is offline
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Can't be done.
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  #3  
Old 06-30-2013, 12:26 PM
Infidel335 Infidel335 is offline
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It can be done. There is a fuse that you can pull that stops the transfer case from sending power to the front diff.
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  #4  
Old 06-30-2013, 12:27 PM
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tturedraider tturedraider is offline
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Quote:
Originally Posted by Infidel335 View Post
It can be done. There is a fuse that you can pull that stops the transfer case from sending power to the front diff.
Please elaborate.
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  #5  
Old 06-30-2013, 12:30 PM
Infidel335 Infidel335 is offline
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Pull fuse #26 5amp. The windshield wipers will go crazy while it's out but the car will be fully RWD.
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  #6  
Old 06-30-2013, 12:48 PM
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xdrive temporary deactivation

If you do this, a shadow code will pop up~


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  #7  
Old 06-30-2013, 12:50 PM
Infidel335 Infidel335 is offline
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A diagnostic tool can delete those codes.
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  #8  
Old 06-30-2013, 04:12 PM
iaebg iaebg is offline
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xdrive temporary deactivation

Is this solid info?


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  #9  
Old 06-30-2013, 06:12 PM
Infidel335 Infidel335 is offline
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I haven't tried it myself but the guys over at e90post.com have and say that it does the trick.
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  #10  
Old 07-01-2013, 12:27 AM
Moik Moik is offline
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Ok, fuse 26 and delete codes after...

Via cable it is not possible???
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  #11  
Old 07-01-2013, 12:59 PM
Infidel335 Infidel335 is offline
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You can clear codes with a diagnostic tool.
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  #12  
Old 07-01-2013, 02:38 PM
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Quote:
Originally Posted by Moik View Post
Ok, fuse 26 and delete codes after...

Via cable it is not possible???
If you are saying "I do not want to pull a fuse. Does anyone know a way to disable the xDrive via a software code change instead?", it appears that the answer is "No".
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  #13  
Old 07-01-2013, 06:21 PM
Infidel335 Infidel335 is offline
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Quote:
Originally Posted by Zooks527 View Post
If you are saying "I do not want to pull a fuse. Does anyone know a way to disable the xDrive via a software code change instead?", it appears that the answer is "No".
Another thread on e90post.com claims that the JB4 can do it but I haven't heard anyone else make that claim or provide supporting evidence. Honestly an open diff RWD car isn't that much fun.
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  #14  
Old 07-01-2013, 06:30 PM
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In a world of electronics, I doubt that it will work.

For the record, I owned for 3 years an Audi Quattro, 1 of them without the central driveshaft. Bad vibrations. It was in FWD mode and I preferred it ... in FWD mode.
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  #15  
Old 07-02-2013, 04:31 AM
Moik Moik is offline
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Quote:
Originally Posted by Infidel335 View Post
Another thread on e90post.com claims that the JB4 can do it but I haven't heard anyone else make that claim or provide supporting evidence. Honestly an open diff RWD car isn't that much fun.
Are you sure AWD has an open diff at the rear axle? I dont think so, but not 100% sure.

Is there any possibility of damaging the actuator motor? I guess fuse should be pulled out with ignition off or with battery disconnected...
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  #16  
Old 07-02-2013, 05:48 AM
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Quote:
Originally Posted by Moik View Post
Are you sure AWD has an open diff at the rear axle? I dont think so, but not 100% sure.
Yes, an xDrive car has an open rear differential, and uses the ABS sensors plus the brakes to control wheel spin in place of a limited slip differential.
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  #17  
Old 07-02-2013, 06:02 AM
Moik Moik is offline
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Quote:
Originally Posted by Zooks527 View Post
Yes, an xDrive car has an open rear differential, and uses the ABS sensors plus the brakes to control wheel spin in place of a limited slip differential.
Spining one rear wheel on the jack makes nothink with the opposite one. That's why I though there can't be normal open differential. Anyway, I will try fuse 26 and let here know.
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  #18  
Old 07-02-2013, 10:12 AM
fdriller9 fdriller9 is offline
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Yes fuse 26 for N52s and fuse 20 for N54/5s. This will disable all stability and traction control systems as well as some safety systems such as ABS. DTC, DSC, EBD, AWD, ABS, and a few other systems are disabled.

Your car will store multiple shadow faults when you do this so if you plan on taking this car to the dealer anytime soon, have a BMW scan tool handy. A JB4 or Cobb scanner will not work as that only clears the DME faults. You need a BavTech tool or an ISTA, DIS, INPA, etc setup.

I've done this before and there are no ill effects. Just don't do this with the engine on!
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  #19  
Old 07-02-2013, 02:28 PM
Infidel335 Infidel335 is offline
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^Or tell them you blew a fuse...just find a blown fuse.
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  #20  
Old 07-02-2013, 02:31 PM
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Why not just drive a car with RWD only?
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  #21  
Old 07-02-2013, 02:32 PM
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xdrive temporary deactivation

Or just save yourself the trouble and rent a RWD BMW?


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  #22  
Old 07-02-2013, 05:07 PM
Infidel335 Infidel335 is offline
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AWD makes a lot of sense for those of use that live in a state with frozen water 6 months out of the year. It's fun to have RWD from time to time but not worth sacrificing the driveability of AWD.
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  #23  
Old 07-02-2013, 05:41 PM
pspressart pspressart is offline
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I agree about AWD. When I lived in Louisville, KY in a hilly area of town, my 2002 325xi made a lot of sense during the winter. We had just enough snow to make it needed. However, now that I live in S. Florida, I do not ever hear the 37 degree beep, let alone have snow, so AWD is superfluous. That's part of the reason I now have a RWD 3351.
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  #24  
Old 07-03-2013, 02:04 AM
Moik Moik is offline
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Yes I am living in a hilly area and we are 5 months under snow. But I am living in a city and 80% driving on highways with no snow. So it is 1:1.

I borrowed RWD BMW but this is just a test on snowy parking place or so... I need to try it in hard conditions, where (I guess) I won't be able to succeed with FUSE 26 pulled out.
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  #25  
Old 07-03-2013, 03:38 AM
pspressart pspressart is offline
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I did not have snow often, but there were several times when more than 8 inches or more accumulated. One of the great features in my XI was hill descent control. My unplowed local street would go down a steep hill to the main road. Having HDC kept the car from going too fast down that hill. If I had to live in an area with a lot of snow and I had RWD, I would get a winter set of wheels and tires.
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