Hi guys here's the thing I started my car up fine at 6 this morning when the temp was -5 and it started fine first go. I finished work at 8pm I tried to start my car and it just wasn't starting. I thought the battery was low so I tried to get a jump start but it still didn't start. Could it be the immobiliser? The stereo comes on,All the lights work so I don't think its the battery. I had to call someone to give me a lift home. When I locked the car the alarm indicator on the door stayed on so it was a constant red light it wasn't flashing like it normally does. The front doors locked but the back doors were still unlocked. So i'm thinking the problem could be electrical any suggestions?