If you need the 4 digit code If my memory serves me it is the last 4 digits of your key code, Or it is the last 4 digits of the vin #. The security code is for the owner to enter and change, It is not factory set. 99.9% of all stereo's do not have a code in place. Personally I wouldn't worry about it.
Welcome to the club
Thanks! I was planning some extensive maintenance (only had the car 2 months) and didn't want to go through dealership drama.