Just a note that it took the service manager at my Volvo dealership two tries with no luck, then the head mechanic to come out before we could get the oil level to display on my XC60 R-Design D4 (5 cyl). And yes, I had RTFM.
My manual is about 200 pages long, almost all of which has no relation to the car I purchased (much info about options only fitted to the very top-end cars). So important details are glossed over or are just incorrect (try and replace a front indicator bulb from the bulb number shown).
There is a method posted here (different Volve, same engine) but I believe other factors must also be satisfied as the published info doesn't always seem to work.
http://support.volvocars.com/uk/cars...a801e801e1febb