Transmission Temperature Sensor/Switch: Service and Repair

2012 Ford E 450 V8-5.4LSECTION Service and Repair



Transmission Fluid Temperature (TFT) Sensor





Removal

1. Remove the transmission fluid pan gasket and filter. For additional information, refer to Fluid Pan, Gasket and Filter Automatic Transaxle/Transmission - TorqShift(R).

2. Disconnect the Transmission Fluid Temperature (TFT) sensor connector.





3. Press the tab, rotate the sensor counterclockwise and pull out.





4. Inspect the O-ring. If the O-ring is damaged install a new TFT (Transmission Fluid Temperature) sensor.

Installation

1. Lightly lubricate the O-ring with automatic transmission fluid and install a new TFT (Transmission Fluid Temperature) sensor. Make sure to slightly rotate the sensor to lock it in place.





2. Connect the TFT (Transmission Fluid Temperature) sensor connector.





3. Install the transmission fluid filter, pan gasket and pan. For additional information, refer to Fluid Pan, Gasket and Filter Automatic Transaxle/Transmission - TorqShift(R).

4. NOTICE: The use of any other transmission fluid than specified can result in the transmission failing to operate in a normal manner or transmission failure.

Fill the transmission.
- Add 7.0L (7.5 qt) of transmission fluid to the transmission through the transmission fluid filler tube.


5. Start the engine. Move the selector lever through all the gear ranges, checking for engagements.

6. With the vehicle in NEUTRAL, engine running and the transmission at normal operating temperature 66-77°C (150-170°F), check and adjust the transmission fluid level and check for any leaks. If transmission fluid is needed, add transmission fluid in increments of 0.24L (0.5 pt) until the correct level is achieved (transmission fluid should be in the hot range cross-hatched area of the transmission fluid level indicator).
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.