The exact meaning of “4WD” seems to depend on manufacturer. Toyota’s 4WD works fine on hard surfaces because the differentials are normally open, which makes it a lot more like AWD. The center differential needs to be locked for it to behave like your described.
The exact meaning of “4WD” seems to depend on manufacturer. Toyota’s 4WD works fine on hard surfaces because the differentials are normally open, which makes it a lot more like AWD. The center differential needs to be locked for it to behave like your described.