When I had my GS300 Mk1 I drove down to Shropshire to see some relatives. As we were leaving their house to drive them about I opened the boot, put my car keys in and shut the boot. About two minutes later the doors locked and I was stumped. I called CLub Lexus and within fifteen minutes the RAC van arrived. He spent over an hour with every tool under the sun to try to get a piece of wire into the window and push the door unlock button. No joy so he called another RAC van to help out. ! After two more hours and several cups of tea later they managed to unlock the doors. Then they spent another hour and half trying to work out how to get the boot open (by disabling the car immobiliser). It took several phone calls to an engineer who specialises in the GS300 immobiliser wiring to disconnect the correct wires to open the boot.
After over four hours of muckiing about they gave me my keys back and there was no damage at all to the interior ! They couldn't do enough for me. That day proved two things to me. One that Club Lexus is ace and two that the Mk1 GS300 is bloody secure !