Yes you do need a service, lubricants age regardless if used or not, fluid levels need checking, brake fluid may need to be replaced, there may be items subject to recalls that may need addressing. There is a long list of why yes and an extremely short list of no reasons which would include being kept in a controlled atmosphere.
As you probably wish to rely on their warranty, they state usually number of kilometres or time whichever arrives sooner so if km are not there yet it will be the period of time that is of primary importance.
