Basically my car has been off the road a while, I had lost the blade off the key so it was still programmed but no metal piece.

I ordered a key from vauxhall for £75. Its a different type of key compared to my old one.

This is the new one...

When i put the key in the ignition the immobizer light comes up. My question is how do I take the transponder out the new key so it dosnt get confused and reads my old transponder?