[Dave92270]

you should definititely order the manual/user-guide, it has more good info about your H3.... Also, in order to switch between 4HiLock and 4LowLock (center and right button), your vehicle should be shifted to neutral and be either stopped or moving very slow. I always fully stop and shift to N before switching 4HiLock/4LowLock; not 100% sure if not doing so will only prevent 4WD mode switch, or will switch but with possible resulting damage...