Since you're on the road, maybe just stop at a dealer and ask. They should be able to show you how it works. I would assume they would show you at no cost, unless something needs to be repaired. May also be able to get you a manual.
Might be kind of difficult if you're on the net with your phone, but might be able to find a copy on the net. If Frogg chimes in she may even have one to download.