I checked for a safe and don't see one. The leveling jack doesn't take a key (engine has to be started though), slide and gas cap don't have locks. My main door has 2 locks with 2 keys also but I have those.
I searched the interior and ground level exterior yesterday and couldn't find a use for this key. Ill have to get on the roof and see if there is something up there. If I ever find out where it goes i'll post an update.
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