This procedure covers the removal and replacement of the factory subwoofer in a 2015-2020 Ford F-150 crew cab or SuperCrew model, typically located under the rear seat.

Warnings

Tools required

Parts

• Subwoofer speaker assembly × 1 — Ford OEM or aftermarket 8-inch or 10-inch subwoofer depending on trim
• Push-pin retainers (if damaged) × 4 — Ford W713184-S437

Preparation

1. Park vehicle on level ground and engage parking brake
2. Disconnect battery negative terminal and wait 2 minutes for airbag system to discharge
3. Ensure rear seat area is clear of debris and personal items
4. Verify replacement subwoofer matches factory specifications (impedance and size)

Procedure

1. 1

   Remove rear seat cushion
   Locate the two seat cushion release straps at the front bottom edge of the rear bench seat. Pull both straps upward firmly while lifting the front edge of the seat cushion. Once released, lift the cushion up and out of the vehicle. The cushion is held by clips at the rear.
2. 2

   Remove rear seat back
   Locate the two lower mounting bolts at the base of the seat back where it meets the floor. Use a 10mm socket to remove both bolts. Pull the seat back release lever and fold the seat forward, then lift upward to disengage the upper hooks and remove the seat back from the vehicle.
3. 3

   Access subwoofer enclosure
   With both seat sections removed, locate the carpeted subwoofer enclosure on the floor behind the rear seat area, typically on the driver side. The enclosure is a rectangular box secured to the floor pan.
4. 4

   Remove enclosure cover fasteners
   Using a T20 Torx driver, remove the screws securing the top cover of the subwoofer enclosure (typically 4-6 screws around the perimeter). Set screws aside in a container to prevent loss.
   Torque spec

   Cover Screws14 Nm (10 lb-ft)
5. 5

   Lift enclosure cover
   Carefully lift the cover off the subwoofer enclosure. You may need to use a panel tool to gently pry if carpet adhesive is present. The subwoofer will now be visible inside the enclosure.
6. 6

   Disconnect electrical connector
   Locate the electrical connector on the back of the subwoofer. Press the locking tab and pull the connector straight off the subwoofer terminals. If equipped with a separate amplifier connector in the enclosure, disconnect it as well.
7. 7

   Remove subwoofer mounting hardware
   Using a 10mm socket, remove the bolts securing the subwoofer to the enclosure (typically 4 bolts through the speaker frame). Support the subwoofer with one hand while removing the final bolts to prevent it from falling.
8. 8

   Extract subwoofer
   Carefully lift the subwoofer out of the enclosure. Note the orientation of the speaker and any foam gasket material between the speaker and enclosure for proper reinstallation.
9. 9

   Install replacement subwoofer
   Position the new subwoofer in the enclosure in the same orientation as the original. Ensure any foam gasket or seal is properly positioned. Align the mounting holes with the enclosure mounting points.
10. 10

    Secure subwoofer
    Install the mounting bolts through the subwoofer frame into the enclosure. Start all bolts by hand, then tighten in a cross-pattern to ensure even seating. Torque to specification using a 10mm socket.
    Torque spec

    Module Mounting Bolts8 Nm (6 lb-ft)
11. 11

    Reconnect electrical connector
    Push the electrical connector firmly onto the subwoofer terminals until you hear or feel the locking tab engage. Ensure the connection is secure and fully seated. Reconnect amplifier connector if applicable.
12. 12

    Reinstall enclosure cover
    Position the cover back onto the subwoofer enclosure, aligning all screw holes. Install all T20 Torx screws by hand first, then tighten in a cross-pattern to the specified torque.
    Torque spec

    Cover Screws14 Nm (10 lb-ft)
13. 13

    Reinstall rear seat back
    Position the seat back and engage the upper hooks into their mounting points in the body. Push down firmly to seat. Install the two lower 10mm mounting bolts and tighten securely.
14. 14

    Reinstall rear seat cushion
    Position the rear edge of the seat cushion into its mounting clips. Press down firmly on the front edge until both sides click into place. Verify the seat is secure by attempting to lift the front edge.
15. 15

    Reconnect battery and test
    Reconnect the battery negative terminal and torque to specification. Turn the ignition to ON position (engine off) and test the audio system at low volume to verify subwoofer operation. Check for proper sound output and absence of rattles or distortion.
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)

Reassembly

1. Ensure all seat mounting points are secure and seats are properly latched
2. Verify no tools or parts were left in the rear seat area or enclosure
3. Check that all electrical connectors are fully seated and locked

Verification

• Test audio system through all sources (radio, Bluetooth, auxiliary) to confirm subwoofer function
• Play bass-heavy audio at moderate volume and listen for rattles, buzzing, or distortion
• Verify rear seats are securely mounted and operate normally
• Confirm no warning lights or audio system error messages on instrument cluster

More procedures for this vehicle