One problem related to trunk wiring has 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.
Loss of brake lights to 2003 Ford Expedition, took it into dealership they found a fire in overhead wiring harness. Ford claims to have no problems with harness. None of these wires were visible to us , but had melted the underside of overhead compartment. Visible burn marks on metal interior of roof. All overhead wiring has to be replaced.