I have my 04 sedan in my storage unit and I haven’t started it in about two full weeks.i live in the Midwest and these past weeks we’ve gotten 60s,rain,snow and freezing temps and winds all in two weeks haha.Anyways i went today to start my car and it won’t turn on!!! All the lights on dash come on but when I turn the key I hear a slow crank and eventually dies off.The radio and car lock/unlock still work so I don’t know what it could be.The abs like comes on when all the dash lights come but it flickers.Im hoping it’s not my cam sensors as I had this with my previous g.Could this be simply a drained battery or something serious?? I added a full tank and changed my oil before I took my car in for storage

 

Very possibly dead battery.

 

Try boosting it. As another member suggested- (near) dead battery. enough juice to power dash, but not enough to crank the engine