On mine all I have to do is release the brake and it restartsAfter being paused for a few seconds with the foot on the brake it will turn the engine off dependent upon the status of the battery to sustain current turned on features such as air conditioning. When you release the brake and step on the gas the engine fires up and away you go. This has been my limited experience with this feature thus far.
Actually the Shark Racing module retains in memory the last selected position of the ISG and Auto-Hold functions. If you select to have the ISG off, and shut off your car, it will remember and keep it off. If you select to have the ISG active, it will be so when you restart it the next time. Same with the Auto-Hold feature as the one module works on both functions. Now, if they would come up with one to keep the rear parking sensor turned off until you turn it back on, that would be great.Sorry no shuts lol..just disables it. Fat fingers today.