This procedure covers removal and replacement of the starter motor on a 2014-2019 Toyota Corolla with the 1.8L I4 engine, accessed from underneath the vehicle.

Warnings

Tools required

Parts

• Starter motor assembly × 1 — 28100-0T050 or equivalent OEM

Preparation

1. Park vehicle on level ground and apply parking brake
2. Place wheel chocks behind rear wheels
3. Allow engine to cool completely if recently operated
4. Disconnect negative battery terminal and secure cable away from battery post
5. Wait at least 90 seconds after battery disconnect for airbag system capacitors to discharge
6. Raise front of vehicle and secure on jack stands rated for vehicle weight
7. Remove engine under cover if equipped (plastic splash shield)

Procedure

1. 1

   Access starter location
   Position yourself under the vehicle with adequate lighting. The starter is located on the transmission bell housing, toward the passenger side of the engine block. Identify the starter motor, electrical connections, and two mounting bolts.
2. 2

   Remove heat shield if equipped
   Some models have a heat shield protecting the starter from exhaust heat. If present, remove the heat shield mounting bolts and set the shield aside. Clean any debris from the area around the starter.
   Torque spec

   Heat Shield Bolts10 Nm (7 lb-ft)
3. 3

   Disconnect starter solenoid wire
   Locate the small connector on the starter solenoid (S terminal). Press the tab and pull to disconnect the push-on connector. Note wire routing for reinstallation.
4. 4

   Remove B+ cable from solenoid
   Using a 12mm socket, remove the nut securing the battery positive cable to the starter solenoid (B+ terminal). Carefully pull the cable terminal off the solenoid stud. Support the cable to prevent it from falling or contacting ground.
   ⚠Ensure battery is disconnected - this cable carries full battery voltage when connected
   Torque spec

   Starter Solenoid Nut12 Nm (9 lb-ft)
5. 5

   Remove lower starter mounting bolt
   Using a 14mm socket and ratchet, remove the lower starter mounting bolt. This bolt threads into the transmission bell housing. Keep bolt for reinstallation or comparison with new hardware.
   Torque spec

   Starter Mounting Bolts50 Nm (37 lb-ft)
6. 6

   Remove upper starter mounting bolt
   The upper mounting bolt is longer and more difficult to access. Using a 14mm socket with a long extension, reach up to the upper bolt. This bolt may require a universal joint or wobble extension to align properly. Remove the bolt completely.
   ℹ️Support the starter as you remove the final bolt - it weighs approximately 7-9 lbs and may drop
   Torque spec

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

   Remove starter motor
   With both mounting bolts removed, carefully wiggle the starter forward to disengage the nose from the bell housing pilot hole. Tilt and maneuver the starter assembly to clear surrounding components and remove it from the vehicle. Inspect the mounting surface and pilot hole for damage or debris.
8. 8

   Prepare new starter for installation
   Compare new starter to old unit to verify correct replacement. Check that mounting ear positions match and electrical terminal locations are identical. Apply a thin coat of anti-seize to the starter nose (pilot section) if desired, but keep anti-seize away from electrical connections.
9. 9

   Install new starter motor
   Carefully maneuver the new starter into position, aligning the nose with the pilot hole in the bell housing. Ensure the starter is fully seated with mounting ears flush against the bell housing surface before installing bolts.
10. 10

    Install upper mounting bolt
    Thread the upper (longer) mounting bolt by hand using the long extension. Once bolt is started and threading properly, tighten to specification using a torque wrench. Ensure bolt threads smoothly without cross-threading.
    Torque spec

    Starter Mounting Bolts50 Nm (37 lb-ft)
11. 11

    Install lower mounting bolt
    Thread the lower mounting bolt by hand, then tighten to specification using a torque wrench. Verify both mounting bolts are properly torqued and the starter is secure with no movement.
    Torque spec

    Starter Mounting Bolts50 Nm (37 lb-ft)
12. 12

    Reconnect B+ cable to solenoid
    Position the battery positive cable terminal onto the solenoid B+ stud. Install the retaining nut and tighten to specification. Ensure connection is clean and tight with no corrosion at the terminal.
    Torque spec

    Starter Solenoid Nut12 Nm (9 lb-ft)
13. 13

    Reconnect solenoid signal wire
    Reconnect the push-on connector to the S terminal on the starter solenoid. Ensure the connector clicks fully into place. Route wire to match original installation and secure any clips.
14. 14

    Reinstall heat shield and under cover
    If heat shield was removed, reinstall it now and tighten bolts to specification. Reinstall engine under cover or splash shield if equipped. Verify all fasteners are secure and no tools or parts were left in the work area.
    Torque spec

    Heat Shield Bolts10 Nm (7 lb-ft)

Reassembly

1. Lower vehicle from jack stands safely
2. Reconnect battery negative terminal and torque to specification (13.0 Nm)
3. Verify battery cable connection is tight and secure

Verification

• Turn ignition to ON position (without starting) and verify all dashboard warning lights function normally
• Start the engine - starter should engage smoothly without grinding, clicking, or hesitation
• Listen for any unusual noises from starter area during cranking
• Verify engine starts promptly and starter disengages immediately when engine fires
• Perform at least 3 start cycles (cold start, warm start, and after sitting 10 minutes) to confirm reliable operation
• Check for any warning lights on dashboard after successful start
• Inspect under vehicle for any loose parts, tools, or fluid leaks before returning to service

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