I saw on the Cruiser forum, that you can program the locking mode the way you want or disable it completely.
Following is what I have saved on my computer:
Again, this is from the 100 series LandCruiser:
"SETTING FUNCTIONS
Do all of this within 10 seconds of inserting the key. Make sure to hold for exactly 5 seconds.
You can set the following functions by yourself. To set the mode 1 (the automatic locking operation linked to shift lever position):
1. Set the parking brake, close all doors and turn the ignition switch to the “ON” position.
2. Shift the selector lever into the “P” position.
3. Press the driver’s side power door lock switch on the front side for about 5 seconds, within 10 seconds after the ignition switch is turned to the “ON” position.
4. The doors will be locked and unlocked to indicate that the function is set. To cancel the function, do the above operation again.
To set the mode 2 (the automatic locking operation linked to vehicle speed):
1. Set the parking brake, close all doors and turn the ignition switch to the “ON” position.
2. Shift the selector lever from the “P” into the “N” position.
3. Press the driver’s side power door lock switch on the front side for about 5 seconds, within 10 seconds after the ignition switch is turned to the “ON” position.
4. The doors will be locked and unlocked to indicate that the function is set. To cancel the function, do the above operation again.
To set the mode 3 (the automatic unlocking operation linked to the ignition switch):
1. Set the parking brake, close all doors and turn the ignition switch to the “ON” position.
2. Shift the selector lever into the “P” into the “N” position.
3. Press the driver’s side power door lock switch on the rear side for about 5 seconds, within 10 seconds after the ignition switch is turned to the “ON” position.
4. The doors will be locked and unlocked to indicate that the function is set. To cancel the function, do the above operation again.
To set the mode 4 (the automatic un-locking operation linked to shift lever position):
1. Set the parking brake, close all doors and turn the ignition switch to the “ON” position.
2. Shift the selector lever into the “P” position.
3. Press the driver’s side power door lock switch on the rear side for about 5 seconds, within 10 seconds after the ignition switch is turned to the “ON” position.
4. The doors will be locked and unlocked to indicate that the function is set. To cancel the function, do the above operation again."