You will be able to renew your card 120 days prior to the expiry date on your card.
To Renew your card, just log into your account. You will be prompted immediately to renew your card.
Click on "Renew now" button.
Once you begin the renewal process, it will bring up a new application but with your previous details copied over. You must review and check that all the information is correct before you proceed to each step in the application.
You will still be required to supply your proof of ID details and redo all inductions and Tests.