I havent driven my 2008 Scion tc in about 3 months. I would ocassionally turn on, but made noises. Car would not start but the radio and alarm worked. Today I tried to open car through alarm key but it didnt work. I had to open door manually with key. Also, I tried to turn on car and it didnt turn on at all. What could this be, hope its just the battery.

 

could be the battery... you have to jump the car and see if it starts first before you try anything else.

if it starts, by all means drive it around and/or let it run for a good 30 minutes or so to build up the charge again.