TRYING TO START MY CAR WITH EXTRA KEY WITHOUT THE CHIP IN IT

I'm sorry, but it is not possible to start a 2005 Ford Focus SE without the key chip. The key chip, also known as a transponder key, is a security feature that prevents unauthorized access to the vehicle. Without the key chip, the car's engine immobilizer system will prevent the car from starting.

If you do not have the original key with the chip, you will need to obtain a new key with a chip from a Ford dealership or a qualified automotive locksmith. They will be able to cut a new key to match the locks on your car and program the new key chip to work with your car's immobilizer system.

Please note that attempting to start the car without the key chip or trying to bypass the immobilizer system may cause damage to the car's electrical system and could potentially lead to other issues. It is important to have a proper working key chip to ensure the safe and reliable operation of your vehicle.

Man, you are stuck, stuck, stuck! Without that chip in the key, the car won't operate. There is no easy or quick fix, no little wires to snip and stick, no module to rip out and toss aside. The car maker has you at their mercy. I hope you have a second key somewhere.

Yes, this is the vats antitheft system. Your car will not start until you hanger the correct chip key or bypass the system. This link should help

http://vatspasslockpasskeysecurityhelp.yolasite.com/

you will need to call the dealer with VIN to get a new key.
i believe the key without the chip is a valet key, car will only run a short time with it

By trying to use another key yu triggered the antitheft system which prevents the car from starting. The only solution is to take it to a dealership and have them replace the ignition switch, the key and the module. About $1000.00. Or you can get a bypass system for about half that, maybe less. Check out this website before you do anything. http://newrockies.ca/vatsbypass.

this is not a chip key. a locksmith should be able to make a key for about 100

Go to a honda dealer near you { parts department } with the VIN, number of your car and they can cut a key with a chip in it ,There not cheap, buts its the only way,You have to prove its your car so bring your title with you,PS,your title will have your VIN, number on it,

Key must be made by the dealer and programmed to the vehicle. There is a chip in the key that the antitheft system must read to start the engine. Any key blank with matching cut can open the door, no chip necessary

You cannot start the car without the chip. That's why it's called anti-theft device. The purpose is just that: to prevent anybody to steal the car with a screwdriver.
You have to get a new cylinder and a new key from the authorized dealer. You'll probably need some proof of ownership.

Yes it is a coded key, the problem is without the resistance value of the original key (the little piece of resistive wire embedded in the key shaft) you will have re-program the system to the new key value. The keys will run about $20 US each and the programming about 1/2 hr or $50. Do yourself a favor get two keys done.