Nissan Back Over Prevention Camera System

I have a nissan sentra 2003 1.8 L. manual trani.  It crank longer than ussual to start and I'm loosing coolant. 
No puddles.  Oil cap has no coolent residue. Temp some times goes up to the line then back down after I rev the engine.
 I

2006 nissan altima, driver side window does not stop at the top rolls back down to the middle then stops

I have problem with my Nissan Frontier - it lost power and slowed down on the road. Took it to the dealer and have been told that comp cover was cracked and moisture got in to system. They changed computer - $2100. Dint help, went back, been told

I have a 2008 Versa hatchback manual, bought with 17K miles on the car. The car will often not start. Will hear 1-2 clicks, then silence for 4-5 seconds sometimes with a hard crank before it will start. Worrisome since sometimes it refuses to star