If you are using the original release of the Kohler Diagnostic System version 2.09 you may not be able to communicate with early models of the C26 Engine (specific versions of the "Metal-Can" ECU) or the latest 32-pin ECU's (starting in mid 2009). A Service Pack Update, now available in the Downloads area, eliminates this problem.

Click Here to Download this update

To install this update, click "Open" when asked by your web browser and follow the instructions.

Once you have installed this update, the Version Number displayed in the lower right of the screen when you start the software should say "Version 2.09 SP4"

This is the last service pack for Version 2.09.