2004 Lexus LS 430 User Guide - Page 314

STARTING AND DRIVING "ON" - Engine on and all accessories on. This is the normal driving position. 31L346 NOTICE Do not leave the ignition switch in the "ON" position if the engine is not running. The battery will discharge and the electronic ignition system could be damaged. "ACC" - Accessories such as the radio operate, but the engine is off. When you enter the vehicle carrying a smart key and push the ignition switch, the electronic code in the key is automatically checked as to whether it corresponds to the registered ID code for the vehicle. The smart indicator light comes on, the steering column lock is released, and the engine immobilizer system is cancelled. At this time, the security indicator light goes off and you can start the engine when you turn the ignition switch and the smart indicator light does not come on. When you turn the ignition switch, turn it slowly and surely. If you turn it quickly, it may become stuck. To free it, turn the steering wheel slightly in either direction with the ignition switch pushed in. If you push the ignition switch when the smart key is not within the effective range of the smart key system, a warning tone sounds and "Key is not Detected" appears on the display. "START" - Starter motor on. The ignition switch will return to the "ON" position when released. For starting tips, see page 300. 296