One problem related to battery dead has been reported for the 2003 Ford Explorer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Ford Explorer based on all problems reported for the 2003 Explorer.
String of electrical failures a the same time - resulted in loss of vehicle for 3-4 days and we had to rent a car to fill in while it was getting repaired - full battery failure, failure of the 4wd component, broken or detached wire in driver's door, resulting in inability to lock/alarm that door with remote.