Originally Posted by 85e150six4mtod
Don't some systems turn off the traction control in 4wd?
The Expy does not turn it off in 2H, 4AUTO or 4H, but you can. Also, in 4L it automatically turns off all stability and traction control, except the brake traction control, however you can do that manually if you want to loose almost all traction because of two open differentials (p. 276 and 277 in Expy '07 Owner's Guide.)
Pages 274-277 have a wealth of information to answer all your questions about 4x4 and AdvanceTrac W/RSC.