I have an 06 x and I recently had some issues driving in the snow. While it was generally pretty good, I got temporarily stuck on an inclined snow-covered driveway. It was a situation where the rear wheels had dug out little trenches for themselves and had essentially zero traction (and before someone asks, I have mud+snow tires). The odd thing is that even though I had snow-mode on, at one point only my rear wheels were spinning (a friend was watching from outside).

I was initially worried that my AWD system was broken, but I'm wondering if this is just a design limitation of the ATTESA system. The central transfer case locks the torque split at 50/50 in snow mode, but that isn't the same thing as locking the differential in a conventional 4x4 (which forces the wheels to turn together as if on a solid axle). With a torque splitter, it seems plausible that the torque sent to the front would be limited by the torque sent to the back - and if the rear wheels have _no_ traction then they might not be able to absorb any meaningful torque. Now I don't understand the system well enough to say for sure, but it certainly seems plausible.

Could someone who actually understands the transfer-case design (NOTE: someone *who actually knows something* only please) weigh in on this? Is it designed to send power to the front even if the rear has _zero_ traction? Do I need to get my AWD serviced or is this behavior within the design specs? Has anyone else experienced anything similar?

 

Hello? Anyone know the answer to this?

 

Cant explane how the system work but with mine never got stuck and living in montreal canada.

When im almost stuck in deep heavy snow i put vdc off and it goes.

Your vdc must be off snow mode or not.