how do i unlock the immobiliser?

Hello,

Try this method to reset the immobilizer in your vehicle:

Press and hold the panic button on the key for for 2 seconds.
Close all the doors.
Use the key (not the fob) to lock and unlock the driver door.
This should reset the immobilizer.

Here is a helpful article:

https://www.2carpros.com/articles/how-to-reset-a-security-system

Please let me know of any questions.
Thank you.