Changed my own oil on a 2012 s60 t5. How do I re set the computer so it knows oil change has been done? HELP!

 

Press the start button once to get the cluster to turn on
Press and hold the trip button on the cluster till the trip zeros out.
Press and hold the start button ( while still pursuing trip button) until the lights turn on.
Wait till the [ i ] on the cluster flashes.