Hopefully it's the same, In my '07 owners manual it says to assign a pin by:
pick a 5 digit number (ABCDE)
turn ignition key on-off-on-off-on quickly
left turn signal 3 times
right turn signal 1 time
turn signals should flash 3 times, the current pin should show with the first
digit flashing.
enter 1st digit (call it A) by pressing left signal A time(s)
press right signal to set 1st digit (new A replaces old A in pin number)
enter 2nd digit (call it B) by pressing left signal B time(s)
press right signal to set 1st digit (new B replaces old B in pin number)
repeat for numbers 345 represented by CDE in your pin
after setting E, turn off key before the security module rearms to set the
new 5 digit code.
and welcome to the forum!