How to Remove the Rear Subwoofer in a 1998 Ford Expedition

Select models of the 1998 Ford Expedition were built with a premium sound system, known as the Mach Audio System. The Expedition Mach Audio System also features an 8-inch subwoofer installed in the passenger side rear cargo area. Removing the subwoofer involves some disassembly of the interior panels, but no special tools or knowledge.

Things You'll Need

• Panel tool
• Ratchet
• 9/16 socket
• Torx T47 driver
• Phillips-head screwdriver
• 6mm socket

Instructions

1. Open the rear cargo door and pry off the cargo door header trim with a panel tool. This is a rectangular plastic panel at the back edge of the ceiling.

2. Pry off the scuff plate at the back edge of the cargo area with a panel tool.

3. Fold down the middle seats. Pry up the floor trim plate behind the seats with a panel tool.

4. Pry off the seat belt anchor cover on the right side middle pillar and remove the 9/16-inch nut with a ratchet tool and a 9/16-inch socket. Pry off the cover and remove the bolt from the bottom seat belt anchor located by the floor with a Torx T47 driver. Pry off and remove the middle pillar trim panel with your panel tool.

5. Remove the seat belt anchor cover from the passenger side rear pillar and remove the bolt underneath with a Torx T47 driver. Pry off the trim panel with your panel tool.

6. Fold back the carpet from the bottom edge of the rear side panel and remove the Phillips screw located by the wheel well.

7. Unscrew the cargo net hooks on the passenger side back panel by grasping them with pliers and twisting them off.

8. Pry up the scuff plate from the passenger rear side door.

9. Pry around the edges of the rear side quarter panel to release the clips. Remove the panel when it's completely loose.

10. Take out the six 6mm bolts surrounding the subwoofer with the 6mm socket. Disconnect the speaker wiring connector attached to the sub and remove the sub from the vehicle.

References

• "Car Stereo Cookbook"; Mark Rumerich; 2005