It has been left in the shop for about 4 months now but it has been started regularly. Just when it was about to come out today it wouldnt start. It is not the battery for sure because all the lights and even the hardtop still works. When I start the car, it doesnt even make that click sound like it usually does when your car is out of battery. Please help me figure this out because I have been waiting for 4 months to get that thing out of the shop.