Q: How to replace the VSS and speed sensors in a Ford Fusion's transaxle?
A: The manual transaxle's Vehicle Speed Sensor (VSS) is on the right rear corner of the transaxle. To replace, raise the vehicle, remove the engine undercover, disconnect the VSS electrical connector, and remove the mounting bolt. The FNRS (5-speed) transaxle has three-speed sensors: the ISS, TSS, and OSS. The ISS and TSS are on top of the transaxle, while the OSS is near the lower left rear corner.