gizmo,
The manual for the security system references the starter cutout. Unfortunately it only lists the solution of overriding the cutout by disarming the system via the key FOB. They don't list any other solutions so if you don't have a FOB for that vehicle, you may have to program one of the ones from your other VX to this one.
Tom
EDIT:
The only other solution I could find when googling was to "disconnect the cable from the security system brain under the dash". I don't know enough about the system to tell you if that would work or not.
EDIT again:
The one thing that I have heard for sure is that disconnecting the battery does NOT reset this security function.