Also is it possible to change the key blade of the replacement key so it fits my locks?
I doubt the key blade can be changed. Best asking a locksmith/key cutter.
Ok got myself a key of the type you suggested - what next?
You first will need to program the new key into the alarm system. Heres the procedure i nicked from an old thread as i can't be bothered looking up the procedure from the Fiat Manuals however i've read it and its correct.
You will a 4 digit code from an existing old blue key, then you will need to follow the procedure below.
all you have to do is:
-Press the button that is between your courtesy light and the ultrasonic sensors on the roof of your car (near sunroof switch)
-Release the button after a second or two
-After a couple of seconds the LED will flash once
-Enter the first digit of your 4 digit code by pressing the button the relevant number of times ( If you have a 0 then press nothing and wait for the next single LED flash)
-After a couple of seconds the LED will flash once
-Repeat this for the next 3 digits of the code.
If the code was correct the LED will flash for approximately 10 seconds.
(If the code was incorrect the LED will remain on for 10seconds, so start from the beginning when the LED goes out)
-With the LED flashing press and hold the button on the car and then press and hold the button on the key. Keep them both pressed until the LED stops flashing and remains on.
-Release the button on the remote, then the one on the car.
now what heppens next depends on the age of the car. some cars have a red LED others have a green LED.
for a red LED, if the programming was successful the LED will flash 6 times, but if it was unsuccessful the LED will flash 18 times
for a green LED, if the programming was successful the LED will flash 8 times (i think, maybe less), but if it was unsuccessful the LED will stay on for a few seconds (8 i think?)
Last question - once recoded will this new key also turn my alarm on/off like the originals did?
As above yes it will if its done correctly. If you mean will it start the car, no not yet. What you need to do is open up your old key and carefully remove the immobilisor chip, do the same for the new key. Now fit the old chip into the new key, then close the key.
Your new key will now work the central locking, alarm and will start the car.
