Your wrong there. I have a 2003 4runner with the V6. It will run in 2HI and 4HI. It also has a low range. It has the torsen transfer case which allows you to run in full time 4 wheel drive on the highway as well as lock it up when needed off road.muzikman said:Most part time 4wd systems you should not drive on dry pavement as the system can bind. AWD systems you can run in 4wd all the time as it works a bit different (all 4 tires are not usually turning all the time).
I am not sure what type of system the 4Runner has, but I bet it's not selectable 4wd.