I have been experiencing this problem on rare occations on my '07, 3.7l Nitro. Now it is happening much more often. When the car is warmed up and then shut off for 10-15 minutes it will continue to crank over when the key is switched to the momentary start position and then released. I must shut the key off to get the starter to stop running. While it is spinning over I have tried stepping on the throttle to see if the engine was actually running but there is no response. Key must be turned off and tried again. Most times on the second try it will start, but I have had it do this up to five times before it actually will start. Dealer says it needs a new battery, but I think they are grasping at straws. I'll try the new battery and see what happens. Has anyone else had this problem?