The TC (TSS) and Output Speed Sensor (OSS) are transmission speed sensors which are used to calculate the actual gear ratio of the transmission while in use. After registering data, the two transmission speed sensors, also commonly referred to as a vehicle speed sensor (VSS), send data to the Powertrain Control Module (PCM); which compares these two inputs and calculates which gear the transmission should be engaged for efficient driving.
Consumers have reported failure of these sensors resulting in the inability to accelerate and or harsh or improper shifting, both of which pose a significant safety issue for the occupants of the vehicle.
If you have a Ford Flex and experienced a problem with the TSS or OSS sensors of your vehicle we would like to hear from you. You may contact us privately using the contact attorney privately box below and/or share your story publicly using the submit button.