center differential Lock

[Bsktball55]

We are going to pick up a 2006 4Runner today and I don't quite understand what the center differential lock is for. The Salesman didn't either. After doing some research I think I have an idea, but am not sure. When you put it in 4wheel drive it still has all of the traction control stuff on and will almost act as an all wheel drive system transferring power where ever it thinks it needs it to keep the car under control. If I lock the center differential it will act more like a traditional 4 wheel drive like what is on my Tacoma? Do I have the general idea right or is there more to it?

[eric-the-red]

You have the gereral idea. With the centre diff unlocked you basically have the same set up as all-wheel drive, this can be used on any road surface. You can even leave it in 4wd all the time if you want. With the centre diff locked it is like a part time 4wd, and can only be used on surfaces with some slip. Locking the centre diff on dry roads will lead to drivetrain binding.
On my 2001 locking the centre diff turns off the stability control, but the traction control and ABS will still function normally.

[Bsktball55]

Thanks, it's actually my wife's car and she is not familiar with 4X4's so I just wanted to know what to tell her as far as using it.