I was in the boat business but had to shut down in 2004. I knew Mercury was updating to a new computer based diagnostic system and they sent me the latest and what they said was the last update for my scan tool which was ver. 4.1. shortly after I shut down my business and put all my parts and tools in storage. I still work on a few boats for some of my older customers that are still running their pre 2004 year model boats. Lately I have been seeing a few later model engines showing up that need work. I have a 2007 200 hp Optimax sn. 1B505533 that is sick and need some TLC.
Not knowing if it would work on the late year model I hooked up my scan tool to get an idea of what it may have gone through but it couldn't read the ECM. What I'm asking is will the scan tool even work on these engines? I have heard that they did do a couple later update cartridge but I wasn't a Mercury dealer then. Can someone please give me the straight skinny on the absolute limits of the old Mercury DDT. I know there are other options out there but didn't really want to go that route right now if I don't have to. Thanks in advance for your help.