i agree with you aiz 2azone, it should be done in a dealer... i've done that when i sense something wrong with the shifting after I replaced the battery.
I was advised to do this everytime I changed the battery bec the setting changes when the battery dies.... a bit costly.. but it was done correctly.
As a result, I got better gas mileage ( 17kms/liter hiway ave of 100kph and 12-13 kms city driving).