Mitsubishi MOTORS Shogun 2007 Owner's Manual page 228

Starting and driving
In the main gate, selector lever has 4 positions, and is equipped
with a lock button (A) to avoid inadvertent selection of the
wrong gear.
4
4-26
The lock button must be pushed while the brake pedal is
depressed to move the selector lever.
The lock button must be pushed to move the selector
lever.
The lock button need not be pushed to move the selector
lever.
WARNING
!
● If the lock button is always pushed to operate the
selector lever, the lever may be accidentally shifted
into the "P" (PARK) or "R" (REVERSE) position.
Be sure not to push the lock button when perform-
ing the operations indicated by in the illustration.