2003 Honda Civic Owner's Manual - Page 82

Keys and Locks Immobilizer System The Immobilizer System protects your car from theft. A properlycoded master or valet key must be used in the ignition switch for the engine to start. If an improperlycoded key (or other device) is used, the engine's fuel system is disabled. When you turn the ignition switch to ON (II), the Immobilizer System indicator should come on for a few seconds, then go out. If the indicator starts to blink, it means the system does not recognize the coding of the key. Turn the ignition switch to LOCK (0), remove the key, reinsert it, and turn the switch to ON (II) again. The system may not recognize your key's coding if another immobilizer key or other metal object is near the ignition switch when you insert the key. To make sure the system recognizes the key code: Do not keep other immobilizer keys on the same key ring. Use a plastic or leather key fob, not metal. Keep other keys away from your car's key and the ignition switch while trying to start the engine. If the system repeatedly does not recognize the coding of your key, contact your Honda dealer. The Immobilizer System indicator will also blink several times when you turn the ignition switch from ON (II) to ACCESSORY (I) or LOCK (0). Do not attempt to alter this system or add other devices to it. Electrical problems could result that may make your car undriveable. If you have lost your key and you cannot start the engine, contact your Honda dealer. CONTINUED Instruments and Controls 81