Technical Service Bulletins

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This bulletin applies to 2009-2011 Ford Taurus, Edge and Flex vehicles. Some vehicles equipped with a 6F50 or 6F55 transmission and built on 3-13-2009 through 6-30-2010 may intermittently exhibit one or more of the following concerns:

  • Transmission slipping or neutral-out
  • 5th gear start from stop
  • Backup camera on in the Drive position
  • Speed control dropping out or inoperative

This may be due to high resistance in the digital transmission range (TR) sensor.


1. With brakes applied, engine off and key on, move the shifter to low gear (L or M position).

2. Turn the key off.

3. Disconnect connector C168 from the transmission.

4. Measure the resistance between the transmission connector pins:

  • 8 and 4
  • 8 and 5
  • 8 and 6
  • 8 and 7

The top row of the transmission’s pins are numbered 1-10 from left to right. If any of the four measurements are above 5 ohm, proceed to Step 5. If all measurements are within specification, this bulletin does not apply.

5. Replace the TR sensor. Refer to workshop manual section 307-01. Use only essential special service tool 307-696 to remove the retaining pin that holds the TR sensor in the transmission case. Attach tool 307-696 to the transmission case with two pan bolts. Slide the cylinder over the head of the retaining pin and tighten the nut on the threaded shaft to pull the cylinder up and retaining pin out of the transmission case.

6. Do not allow the park pawl actuator rod to become disengaged from the park pawl and the abutment. Keep the end of the park pawl actuator rod behind the machined valve body mating surface of the transmission case. If the park pawl actuator rod becomes disengaged from the park pawl and the abutment, transmission removal and disassembly is required to install the actuator rod.

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