One problem related to wiring has been reported for the 2009 Ford Fusion. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Ford Fusion based on all problems reported for the 2009 Fusion.
Herky jerky acceleration. Dealership said it was a sensor. 6 months later, same problem. Dealership said a small oil leak burned through some wires. Stated some sort of issue with a wiring harness. Stated wiring harness needed replaced, but was virtually impossible to locate. Brakes constantly need repairs/replacements. Multiple times per year.