2003 Lexus LS 430 Owners Manual - Page 192

THEFT DETERRENT 137.THEFT DETERRENT SYSTEM 17L014 17L013 "Security indicator light To deter theft of the vehicle, this system is designed to sound an alarm if any of the doors, trunk or hood is forcibly unlocked or opened or the battery terminal is disconnected and then reconnected while the vehicle is locked. The alarm blows the horn intermittently, flashes the headlights, tail lights, turn signal lights and other exterior lights, and illuminates the interior lights. After the alarm is activated, when you unlock any door or the trunk using an ignition key or wireless remote control, the tail lights turn on for about 2 seconds to inform you that the system was activated. Setting the system 1. Turn the ignition key to the "LOCK" position and remove it. The engine immobiliser system causes the indicator light to flash. 2. Close and lock all the doors, trunk and hood using an ignition key or wireless remote control. If you lock them with the wireless remote control, the turn signals flash once.* NOTE: *The turn signals can be set not to flash. Ask your Lexus dealer for details. The flashing indicator light will remain on when all the doors, trunk and hood are closed and locked. 178