2011 Lexus IS 350 Owners Manual - Page 570

Theft Deterrent System The theft deterrent system includes the following features to help protect your vehicle from theft. n Engine immobilizer system The engine immobilizer system prevents the engine from being started in the event that an attempt is made to start the vehicle using an unregistered key. The security indicator light flashes to indicate that the system is set. n Alarm The system sounds the alarm and flashes lights when forcible entry is detected. To set the alarm: lock all the doors from outside the vehicle. The security indicator light comes on to indicate that the alarm is in its preparation state. When the indicator light begins to flash, the system is armed. To deactivate or stop the alarm: turn the "ENGINE START STOP" switch to ACCESSORY or IGNITION ON mode, start the engine or unlock the doors or trunk. n Steering lock The steering wheel locks when the "ENGINE START STOP" switch is OFF. When the steering lock cannot be released, the green indicator light on the "ENGINE START STOP" switch will flash and a message will be shown on the multi-information display. To release it, gently turn the wheel left or right while pressing the "ENGINE START STOP" switch. 8