My 4 year old 2008 Grande did something similar recently. I left the internal light on one night by mistake. Next day no go. Engine would try to tick/turn but no go. Tried the emergency start but the battery was too weak. Got some jump leads and bang first time all ok! Weird thing it was only 4 year old battery - original dealer stock. The health indicator on the battery said all was fine, so I left it saying it was me... Then 2 weeks later - had all the doors open vacuuming the inside and the fans blowing, acc on, (no lights bar internal ones) and sat nav/radio on. Approx 1.5 hrs later again no start. Im assuming a weak battery but now i think about it I dont know....
