If it is a two button plip (fob). (Which is should be for that YoM.) The car/plip you not need recoding when you replace the battery. (If it is a one button plip it may need it but not usually.)
Only if the following procedure fails should they car and plip need resetting and it needs to be done by a dealer with a diagnostic laptop.
Get a CR2032 battery. Remove the old battery. Press and hold each button in turn for five seconds. Fit the new battery. Unlock the vehicle using the key and then operate the lock button at least four times. It is now ready for use.
t
August 2008