One problem related to battery has been reported for the 2005 Ford Focus. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Ford Focus based on all problems reported for the 2005 Focus.
While driving in the early morning or evenngs I notice that the abs light and battery light glow on. They come on and go off. Last evening the car was sitting in my driveway with the doors locked and windows up. The dome light came on and went off several times. I looked into the car and found that the oil light and the door ajar light were on when the dome light was off. Also, when the door ajar and oil light are on, the wireless remotes do not work. I have taken the vehicle in for the abs and battery light 2 times with no resolve. I took the vehicle in for service today with video of the dome light, oil light, and the door ajar light.