Quote:
Originally Posted by Lawfarm
I haven't read a good explanation, anywhere, of the AWD system on the E70s.
What kind of center differential do they have? What about front and rear? Is the traction control strictly brake-based, or do they have electronically modulated differential lockup? If it is electronically modulated, are they hydraulic, clutch-based or mechanical?
If it matters, I have an 09 xDrive35d.
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IIRC, no center differential per se only transfer case. Transfer case is multi-disc clutch with electronic stepper motor engagement with a multi-link chain connecting the driveshafts bathed in TC oil.
Front and rear diffs are conventional and open with no limited slip differential, only DSC 'brake the spinning wheel' traction control.
Beat me to it Jeff! Props on the detailed explanation!
