Rebuilt Transmission Question.

Weasel · #1 09-03-2009, 09:24 PM

If your X5 is 2004 and up it has the x-drive transfer case. In the case is a clutch pack just like in the transmission, and can cause exactly what you are describing. As a quick diagnosis method to see if it is the case as I suspect would be to simply unplug the actuator motor on the case. If you look under the X5 at the left rear side of the transfer case you will see a wiper motor sized motor, unplug it and go for a test drive. (you may get a DSC light on, but this is the easiest diagnosis) If the ride smooths out and feels normal with it unplugged, you may need a new unit. I think the new clutch friction plates may be available, but the motor has a coding plug that is determined by the clutch characteristics, and adaptations further adjust as you drive over the miles. You would need to register whatever is done in the VTG (transfer case control module) via the GT1 tester to clear adaptations for it.

diyanich · #2 09-03-2009, 10:30 PM

Hi Weasel!

Thank you for your reply.
Mine is 4.4 2000,so no X-Drive here.
I was told that there's a 500 kms breaking in for the friction material,I have feeling that it's not gonna disappear...

I feel that transmission overall acts fine,but I still have the rear endings when it warms up.
How about a transfer case for my model?
Also,why is it smoother now after a rebuild,so I suspect the issue should be within the tranny case.
Any idea is appreciated.

Quote:

Originally Posted by Weasel

If your X5 is 2004 and up it has the x-drive transfer case. In the case is a clutch pack just like in the transmission, and can cause exactly what you are describing. As a quick diagnosis method to see if it is the case as I suspect would be to simply unplug the actuator motor on the case. If you look under the X5 at the left rear side of the transfer case you will see a wiper motor sized motor, unplug it and go for a test drive. (you may get a DSC light on, but this is the easiest diagnosis) If the ride smooths out and feels normal with it unplugged, you may need a new unit. I think the new clutch friction plates may be available, but the motor has a coding plug that is determined by the clutch characteristics, and adaptations further adjust as you drive over the miles. You would need to register whatever is done in the VTG (transfer case control module) via the GT1 tester to clear adaptations for it.