http://www.brandwood.net/supra/handbook/1/2/doors.html
You don't need to hold the outside handle if you use the power lock switch.
Also....
There is a switch in the ignition lock that won't let you lock the doors electrically if you leave the key in the ignition.
That switch is very sensitive (probably worn out a bit). Mine sometimes WILL allow it to lock doors when key is still in ignition.