I've got a 1991 celica which has had the alarm/remote (Fujitsu i think)locking disabled - i'm trying to get a new fob reprogrammed for it but to no avail. With the car came two small circular keys - a bit like the ones you get on expensive bicycle locks. They're coded to the individual alarmYou need these to turn off the unit under the bonnet. I think.
Best of luck,
Paul Effeny, August 2007