I have a 2004 Ford Focus ST170. Some days I go to my car and it starts fine, but some days I put the key in and nothing happens. All the electrics fail like the battery is dead.
If I get out, close the door, put the key in the lock, turn it to lock then reopen it, it starts. I've taken the battery out and put it in another car and it started fine.
I've also put the other cars battery in my car and it starts fine. We drove to town in the morning. When we went to drive it 2 hrs later it wouldn't start. Then it was ok for few days then it did it again. Any ideas?