Sounds like a haldex system...which is rather poor indeeed. The older Highlanders had a 3 diff system with a center planetary diff. I'll agree to most of what he wrote. HangFire, The Subaru's act the same way, never fully disengaging the clutch to the rear and based on the incline sensor, throttle etc...send more power to the rear as needed. You can feel it when driving a little harder, adding more throttle pushes the car through the corner. I guess his beef is just the clutches in general. He would rather have center diffs on everything and done mechanically I bet. That is how my old Forester was and you could tell. It drove like a mostly RWD vehicle unless you pushed it.
Originally Posted By: edwardh1
how does the toyota highlander awd work? - says it (2 rear wheel drive) comes on when needed???????