There are 2 functions here. One is the central locking and the other is the immobiliser. You can program the central locking system manually but the immobiliser needs to be coded with diagnostic equipment.
To program the central locking:
Have both keys ready.
1. switch ignition ON and OFF 6 times within 10 secs. Do not remove key from ignition switch.
2. after 2 secs indicators will flash twice.
3. Programming mode activated for 2 mins.
4. press and hold unlock button.
5. press lock button 3 times.
6. release unlock button.
7. indicators will flash once to confirm correct programming.
8. repeat for spare key.
9. switch ignition ON, indicators will flash twice and programming mode is deactivated.
Then try keys to see if successful.
For the immobiliser you will need a 4 digit code (may be in the pack with manual) and a diagnostic scanner. Auto locksmiths, auto elects etc can do this.