Technical New key does not work

[MK2lover]

The metal part of my key broke of from the wireless/plastic part, so I bought a new key (plastic + metal part):

I got the blade part cut to match the old blade and put all electronics from old key into new key.

Wireless lock/unlocking works, but the car does not start when turning the key. I'm pretty sure the Immobiliser prevents the car from starting. Why is that, when I used the old keys electronics?

 

[varesecrazy]

Damage?

The chip inside has to be read by an aerial around lock barrel

If the immob light doesnt go out.. then its probably the car not teading the keys chip

 

[chris3234]

Double check the old hey casino make sure the immobilise chip isn't still inside it may look like a small glass fuse

 

[varesecrazy]

Key casing..

 

[g8rpi]

Hi,
Either you have not transferred the transponder chip to the new housing or have damaged it. Hold the two halves of the old casing allong side the new key and see if the engine starts. If it does the transponder is still in the old key. It can look like a small glass tube with copper colour inside or an odd shaped plastic block .



Robert G8RPI.

 

[MK2lover]

Arh. I only switched the circuit board. I guess I haven't replaced the chip then.
Will give it a try

 

[maggers]

Stick the chip to the key reader with blu tac, works every time!