This is the procedure to setup a keyfob:
put key in driver door lock (all windows closed)

turn to unlock position 3 times holding for approx 1/2 second each time & within 5 seconds! remove the key & observe the red led in the door flash

press & hold lock botton

whilst still pressing "lock" press & release "unlock" 3 times, the door LED & the key fob LED should now flash 5 times to indicate you were successful.

if you have another key, you must repeat from "press & hold lock button" & work fairly quickly (book says within 15 seconds for each key) if no second key then wait until door LED goes out & then try the remote key fob