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Your Immobilizer system checks whether the engine is allowed to start with the key being used. If the transponder in the key is recognised, the engine can be started.
The electronic immobiliser activates itself automatically after the key has been removed from the ignition switch. If control indicator "spanner light" flashes when the ignition is on, there is a fault in the system; the engine cannot be started.
Switch off the ignition and then repeat the start attempt. If the control indicator continues flashing, attempt to start the engine using the spare key and seek the assistance of a workshop.
I believe you are referring to the immobilizer in your key for your car. Unfortunately there is not a way around this factory anti theft system. However most delearships have the ability program new keys for you.
If you had two valid keys that were already programed to the car's immobilizer you can simply buy another key with a programmable immobilizer chip, usually referred to as a sentry key. These keys are available at some hardware stores for cheaper then you would find at a dealership. So if you have the old keys and a new blank key you can follow the following procedure in most cars to program the new key:
1. Bring the replacement sentry key to a hardware store or dealership. Have it cut to match the original valid sentry keys.
2. Place the first valid key into the PT Cruiser's ignition and turn to the ON position for a minimum of three seconds and a maximum of 15 seconds. Turn ignition switch off until it is in the LOCK position and remove the key.
3. Within 15 seconds, insert the second valid key and turn the ignition to the ON position. Wait ten seconds or until a chime sounds and the vehicle security light begins to flash. Turn the ignition off until it is in the LOCK position and remove the key.
4. Within 60 seconds, insert the new blank sentry key into the ignition switch and turn it to the ON position. Wait 10 seconds or until you hear a single chime and the vehicle security light stops flashing. Look for the indicator light on the dashboard. If it turns on for three seconds and then turns off, the key has been successfully programmed.
to reprogram new key first you need to use 2 factory program keys.place first factory key in the ignition first turn ignition on for 3 seconds. then turn off ignition then install second factory in the ignition on position for 10 seconds.when immobilizer warning lamp begins to flash a acoustic signal is emitted.within 60 seconds. switch ignition off and remove key.then insert new key and switch on for 10 seconds a acoustic signal is emitted and immobilizer warning lamp remain illuminated for 3 seconds indicating programming completed.if all fails dealership has to reprogram new keys.
TRY ANOTHER KEY YOUR VECHICLE SHOULD HAVE 2 PROGRAM KEYS. TRY THE OTHER KEY.PUT IN IGNITION.TURN ON IGNITION SWITCH FOR 10 SECONDS UNTIL IMMOBILIZER WARNING LAMP BEGIN TO FLASH AN ACOUSTIC SIGNAL IS EMITTED.SWITCH OFF THE IGNITION SWITCH.IF THIS PROCEDURE DONT WORK.TURN KEY ON IN THE IGNITION FOR 60 SECONDS.UNTIL IMMOBILIZER WARNING LAMP FLASHES AND ACOUSTIC SIGNAL IS EMITTED. THEN TURN OFF IGNITION SWITCH.
PUT THE RIGHT KEY IN THE IGNITION SWITCH TURN IGNITION SWITCH TO ON POSITION UNTIL IMMOBILIZER WARNING LAMP ILLUMINATES FOR FEW SECONDS.KEY HAS RESET.IF IMMOBILIZER WARNING LAMP FLASHES RAPIDLY KEY DID NOT RESET.TRY TURN SWITCH ON WITH KEY UNTIL IMMOBILIZER LIGHT ILLUMINATES FEW SECONDS TURN OFF YOU READY TO GO GO GO.IF CANT RESET HONDA DEALERSHIP HAS TO USE DIAGNOSTIC EQUIPMENT TO RESET KEYS TO IMMOBILIZER MODULE.
"Security" or Key-shaped light flashes on the dashboard ? Your car might be equipped with an immobilizer. (you can find more information about the immobilizer in your owner's manual). The immobilizer allows the engine to run only if the correct key is used. If your car has an immobilizer, you probably see a "Security" or Key-shaped light coming on on the dashboard every time you turn the ignition ON. If this light is flashing when you turn the ignition ON, it could mean that there is some problem with an immobilizer or the system does not recognize the key. If the immobilizer doesn't recognize the key, the engine wold not start at all, or would start and then die in few seconds. You can try a spare key, if it won't work, your dealer is the place to call. Sometimes, the key is just need to be reprogrammed.
That's your immobilizer system light:
The Immobilizer System protects your car from theft. A properly coded master or valet key must be used in the ignition switch for the engine to start.
If an improperly coded 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 vehicle’s key and the ignition switch while trying to start the engine.
Do not attempt to alter this system or add other devices to it. Electrical problems could result that may make your car undriveable.
This indicator will also blink several times when you turn the ignition switch from ON (II) to ACCESSORY (I) or LOCK (0).
If the system repeatedly does not recognize the coding of your key, contact your Honda dealer.
If you have lost your key and you cannot start the engine, contact your Honda dealer.
Hope this lets you understand the light, and what should be happening.