Remove and replace the starter motor on a 2015-2020 Ford F-150 with 5.0L V8 Coyote engine, including disconnecting battery, removing mounting hardware, and reconnecting electrical connections.

Warnings

Tools required

Parts

• Starter motor × 1 — Motorcraft SA-1049-RM or equivalent
• Starter mounting bolts (if corroded) × 2 — Use OEM specification

Preparation

1. Park vehicle on level surface and apply parking brake
2. Place wheel chocks behind rear wheels
3. Allow engine to cool completely if recently operated
4. Disconnect negative battery cable and secure away from battery post
5. Raise front of vehicle and support securely on jack stands
6. Remove plastic engine under-shield if equipped (push-pin fasteners)

Procedure

1. 1

   Disconnect negative battery terminal
   Using a 10mm socket, loosen and remove the negative battery terminal bolt. Remove the cable from the battery post and secure it away from the battery to prevent accidental reconnection during the repair.
2. 2

   Locate starter motor
   From underneath the vehicle on the passenger side, locate the starter motor mounted to the engine block behind the alternator. The starter is positioned where the engine meets the transmission bellhousing. Use a flashlight to identify the mounting bolts and electrical connections.
3. 3

   Remove heat shield (if equipped)
   Some F-150 models have a heat shield protecting the starter from exhaust heat. If present, remove the heat shield bolts using a 10mm socket and set the shield aside.
   Torque spec

   Heat Shield Bolts10 Nm (7 lb-ft)
4. 4

   Disconnect starter solenoid wire
   Locate the small push-on connector on the starter solenoid (S-terminal). Pull the connector straight off the solenoid terminal. This is the trigger wire from the ignition system.
5. 5

   Disconnect main power cable
   Using a 13mm socket, remove the nut securing the main battery cable (B+ terminal) to the starter solenoid. The cable will have a large ring terminal. Carefully move the cable aside to provide clearance for starter removal.
   ⚠Ensure battery is disconnected before removing this cable. This is a direct connection to battery positive voltage.
   Torque spec

   Starter Solenoid Nut12 Nm (9 lb-ft)
6. 6

   Remove upper starter mounting bolt
   Using an 18mm socket with a long extension (10-inch) and universal joint, access the upper starter mounting bolt from underneath. This bolt threads into the engine block/bellhousing. The universal joint is necessary due to limited access angle. Remove the bolt completely.
   ℹ️The upper bolt is longer than the lower bolt and may require a long extension to clear surrounding components.
   Torque spec

   Starter Mounting Bolts50 Nm (37 lb-ft)
7. 7

   Remove lower starter mounting bolt
   Using an 18mm socket with extension, remove the lower starter mounting bolt. This bolt is typically easier to access than the upper bolt. Once removed, the starter is free from the engine block.
   Torque spec

   Starter Mounting Bolts50 Nm (37 lb-ft)
8. 8

   Remove starter motor
   Support the starter motor weight with one hand while guiding it away from the engine block. Maneuver the starter forward and downward to clear the bellhousing and surrounding components. The nose of the starter engages with the flywheel/flexplate area, so pull straight back initially before rotating for removal.
   ⚠Starter weighs approximately 15-18 lbs. Maintain secure grip to prevent dropping on yourself or damaging components below.
9. 9

   Inspect mounting surface and flywheel
   With starter removed, inspect the mounting surface on the engine block for corrosion or damage. Clean mounting bolt holes with a wire brush if necessary. Visually inspect the flywheel/flexplate teeth through the starter opening for damage or missing teeth. Check the starter nose bushing area for wear.
10. 10

    Prepare new starter for installation
    Compare new starter to old unit to verify correct part. Check that the nose cone is clean and the pinion gear moves freely when rotated by hand. Ensure all electrical terminals are clean and free of corrosion.
11. 11

    Install new starter motor
    Guide the new starter into position, aligning the nose cone with the bellhousing opening. Ensure the starter seats fully against the mounting surface before installing bolts. The mounting bolt holes should align easily if properly positioned.
12. 12

    Install starter mounting bolts
    Thread both mounting bolts by hand first to ensure proper thread engagement. Install the lower bolt first, then the upper bolt using the extension and universal joint. Tighten both bolts to specification using a torque wrench and 18mm socket.
    Torque spec

    Starter Mounting Bolts50 Nm (37 lb-ft)
13. 13

    Reconnect main power cable
    Position the main battery cable ring terminal over the solenoid B+ stud. Install the nut and tighten to specification using a 13mm socket and torque wrench. Ensure the connection is clean and secure.
    Torque spec

    Starter Solenoid Nut12 Nm (9 lb-ft)
14. 14

    Reconnect solenoid trigger wire
    Push the small connector firmly onto the solenoid S-terminal until it clicks into place. Verify the connection is secure by gently pulling on the wire.
15. 15

    Reinstall heat shield and reconnect battery
    If heat shield was removed, reinstall it and tighten bolts to specification. Lower vehicle from jack stands. Reconnect negative battery cable to battery terminal and tighten to specification using a 10mm socket and torque wrench.
    Torque spec

    Heat Shield Bolts10 Nm (7 lb-ft)

Reassembly

1. Ensure all electrical connections are secure and properly routed away from heat sources
2. Verify no tools or parts were left in the engine compartment or under vehicle
3. Reinstall engine under-shield if it was removed
4. Double-check that both starter mounting bolts are torqued to specification

Verification

• Turn ignition key to ON position (without starting) and verify dash lights illuminate normally
• Attempt to start engine - starter should engage smoothly without grinding or excessive noise
• Engine should crank at normal speed and start readily
• Listen for any abnormal sounds from starter area during cranking
• Verify no warning lights remain illuminated after engine starts
• Test start engine 3-4 times to confirm consistent operation
• Check for any fluid leaks or loose connections after test starts
• Verify starter disengages immediately when engine starts (no continued spinning noise)

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