Just purchased a used 2009 Pro-4 Crew 4x4. The locking side box will not open. The Nissan dealer wouldn't offer a solution. A locksmith took a quick look (the usual pushing and turning the key. The key is not sticking and felt like it was performing properly). The locksmith was at a loss and feels he could not do anything without know the type of locking mechanism that is installed. Yes, it is the right master key. Only cost me $300.00 from the local dealer to get it made. I took it upon myself to cut a hole on the backside of the plastic box thinking something inside must be jamming the box door. To my surprise there is nothing inside. What I did see is the locking mechanism seems to be a small vertical rod? Turning the key doesn't move it. WD40 in the lock and coating the vertical rod locking mechanism doesn't get the job done either. "Does anyone have a diagram detailing the lock mechanism"? If I can get one perhaps a good locksmith has a solution to gain entry and fix it so it is usable again....Any assistance would be appreciated...............THX