2004 Lexus IS 300 Owners Manual - Page 28

03 07.09 KEYS AND DOORS Flat key Starting the engine using a flat key SV11020 SV11011 Since a transponder chip is built in its key case, you can start the engine with this key. The flat key works in every lock. A transponder chip for engine immobilizer system has been placed in the key case of the flat key. This chip is needed to enable the system to function correctly, so be careful not to lose this key. If you make your own duplicate key, you will not be able to cancel the system or start the engine. Insert your key plate in its key case as shown. We recommend that you always carry this with you for emergency use. Do not leave it in your vehicle. 1. Remove the key plate from the key case. 2. Insert the key plate into the ignition switch. The indicator light keeps flashing. 3. Bring the key case closer to the ignition switch within 10 seconds as indicated by the arrow head. The indicator light goes out. This means the engine immobilizer system is automatically cancelled. (For details, see "Engine immobilizer system"on page 12.) You can put the key case away then. You cannot cancel the engine immobilizer system if 10 seconds have past after you inserted the key plate. You need to remove the key plate from the ignition switch and try it again from the step 2. 4. Start the engine within 20 seconds after the security indicator light goes out. You cannot start the engine if 20 seconds have past after the security indicator went off. You need to remove the key plate from the ignition switch and try it again from the step 2. 9