Two problems related to starter have been reported for the 2003 Ford Expedition. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Ford Expedition based on all problems reported for the 2003 Expedition.
As my fiance was coming from work the car suddenly just quit on him while doing 75 mph. He guided the car to the side of the road to a complete stop. He tried to crank the car again to only hearing a buzzing sound. The first mechanic thought it was the starter so he changed it out. The vehicle still would not start but kept making the buzzing sound. The mechanic came out again to see what the issue was told me to change my relay switch I did still hasn't started up yet. My vehicle has been sitting up for three weeks now.
The vehicle would randomly fail to start over a period of 2 months, usually in the morning. All lights, gauges, radio, and heater would work, but the engine would not crank. After turning the key 4-5 times, it would eventually start. One time, nothing worked and had to jump start the battery. I replaced the battery and 1 week later, it did not turn over again at all, but everything else was working. I let it sit, and tried it later in the day, of which it started right away. I took it to the dealer and they tested it. They had the problem happen twice on the first day and determined the cause to be the starter terminal wiring pigtail was corroded, and they replaced it with a new one.