This procedure covers the removal and replacement of the transmission range sensor (neutral safety switch) on a 2015-2020 Ford F-150 with the 5.0L V8 and RWD configuration.

Warnings

Tools required

Parts

• Transmission range sensor × 1 — Motorcraft TR16 or equivalent
• Transmission range sensor O-ring × 1 — Often included with sensor

Fluids

• Motorcraft MERCON LV ATF — 1 qt

Preparation

1. Park vehicle on level surface and set parking brake firmly
2. Place wheel chocks behind rear wheels
3. Disconnect negative battery cable and wait 2 minutes for system de-energization
4. Raise front of vehicle and support securely on safety stands
5. Allow transmission to cool to ambient temperature if recently driven
6. Locate transmission range sensor on driver side of transmission near shift linkage

Procedure

1. 1

   Access transmission range sensor
   From underneath the vehicle, locate the transmission range sensor on the driver side of the 10R80 transmission case, near the manual shift shaft. It will have an electrical connector and is secured by two 10mm bolts. Clean the area around the sensor with brake cleaner to prevent contamination.
2. 2

   Disconnect electrical connector
   Press the tab on the transmission range sensor electrical connector and pull straight back to disconnect. Do not pull on the wires. Inspect connector pins for corrosion or damage.
3. 3

   Position drain pan
   Place a drain pan directly below the transmission range sensor. Expect approximately 0.5 to 1 quart of transmission fluid to drain when the sensor is removed, depending on fluid level.
4. 4

   Remove sensor mounting bolts
   Using a 10mm socket, remove the two bolts securing the transmission range sensor to the transmission case. Keep bolts for reinstallation if they are in good condition (not stripped or corroded).
5. 5

   Remove transmission range sensor
   Carefully pull the sensor straight out from the transmission case. Fluid will drain from the opening. If sensor is stuck, gently wiggle while pulling - do not pry against the transmission case as this can cause damage. Remove and discard the old O-ring from the sensor bore.
   ⚠Do not rotate or twist the manual shift shaft during sensor removal - this can affect shift linkage alignment.
6. 6

   Clean sensor mounting surface
   Clean the transmission case mounting surface thoroughly with a clean rag and brake cleaner. Inspect the manual shift shaft for damage or excessive wear. Remove any old O-ring material from the sensor bore. Allow fluid drainage to stop before proceeding.
7. 7

   Prepare new sensor
   Install the new O-ring onto the new transmission range sensor. Lightly lubricate the O-ring with clean MERCON LV transmission fluid. Verify the sensor alignment pin and shaft are clean and undamaged.
8. 8

   Install new transmission range sensor
   Align the sensor with the manual shift shaft, ensuring the alignment pin engages the transmission case properly. Push the sensor straight into the bore until it seats flush against the transmission case. Do not force - if resistance is felt, remove and check alignment.
   ⚠Ensure manual shift shaft detent is in PARK position before installing sensor. Misalignment will cause incorrect gear position reading.
9. 9

   Install and torque sensor bolts
   Install the two sensor mounting bolts and torque to specification in a criss-cross pattern. Ensure sensor remains fully seated during tightening.
   Torque spec

   Sensor Bolts14 Nm (10 lb-ft)
10. 10

    Reconnect electrical connector
    Reconnect the electrical connector to the transmission range sensor. Push firmly until the locking tab clicks into place. Gently tug on the connector to verify it is locked.
11. 11

    Check and top off transmission fluid
    Lower the vehicle and check the transmission fluid level with the engine running, transmission in PARK, and fluid at operating temperature. Add MERCON LV fluid as needed to bring level to the correct range on the dipstick. Fluid loss is typically 0.5-1.0 quarts.
12. 12

    Reconnect battery and clear codes
    Reconnect the negative battery cable. Use a scan tool to clear any diagnostic trouble codes stored during the repair. If no scan tool is available, drive the vehicle through several shift cycles to allow the system to relearn.

Reassembly

1. Verify transmission range sensor electrical connector is fully locked
2. Confirm transmission fluid level is correct with engine at operating temperature
3. Remove safety stands and lower vehicle completely

Verification

• Start the engine and verify the gear position indicator on the dash matches the actual shift lever position in all gear ranges (P, R, N, D)
• Verify engine only starts in PARK and NEUTRAL positions
• Test drive the vehicle and confirm smooth shifting through all gears with no delayed engagement
• Check for transmission fluid leaks around the sensor after test drive
• Use scan tool to verify transmission range sensor signal matches shift lever position in live data (if equipped)
• Verify no diagnostic trouble codes are present related to transmission range sensor circuit

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