Car Will Not Start problems of the 2017 Honda Civic

Sometimes, when trying to start the vehicle, it will not crank and start. The electric power will come on (dash board icons, headlights, etc. ), but it will not crank. It takes from 2 to 7 turns of the key, before it cranks and starts. This problem occurs sometimes once a week, sometimes 2 or 3 times. I took it to a Honda dealer for repair. However, on the day I took it in, of course, it was working fine. The service manager said that their computer could not diagnosis it, unless the problem occurred while it was hooked to the computer. He told me to bring it back when the problem got worse, or the car would not start at all. I have not returned to the dealer yet. This problem began in early July of this year. The vehicle had approximately 36,000 miles on it.