Unshure what code 45 is...i have never seen that one.
i have come across a very few 1 out of about every 25 or so that for some reason will not reset unless done through VADIS.
if your service reminder was not reset at the last service at the dealer ...take it back, they should do it at no charge. if there are any other fault codes set in any of the systems and they try to do the "upsell"to you, ask for a print out of the codes.it can be done ...dont belive them when they say it cant.(some dealers for some bizzar reason dont like to give this info out)you can also have the interval changed for when the light returnes(there may be a charge to do this, this option should have been given to you free of charge when you took delivery of the car, sometimes returning to your salesman or sales dept. for these kind of problems works better than dealing with service).adjustment period for problems like this is 12 months 12k miles.