2007 Lexus SC 430 Owners Manual - Page 106

2-1. Driving procedures n If the engine does not start Check whether the other keys will start the engine. If they work, your key may be broken. Have the key checked at your Lexus dealer. n Leak detection pump Approximately five hours after the engine is turned off, you may hear sound coming from underneath the trunk for several minutes. This is normal operation and does not indicate a malfunction. (→For your information) n Starting the engine using the flat key 2 When driving Remove the flat key from its case. Insert the removed flat key into the ignition switch. Bring the key case close to the ignition switch within 10 seconds as indicated by an arrow. Put the key case away when the indicator light goes out. This means the engine immobilizer system has turned off. Start the engine within 20 seconds after the indicator light goes off. 91