This procedure covers the removal and replacement of the interior fuse box assembly on a 2018-2024 Toyota Camry with the 2.5L I4 engine, including proper disconnection and reconnection of all electrical circuits.

Warnings

Tools required

Parts

• Interior fuse box assembly × 1 — Use OEM specification
• Fuse box mounting bracket (if damaged) × 1 — Use OEM specification
• Electrical connector grease (dielectric) × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake
2. Turn ignition off and remove key or ensure push-start system is completely off
3. Allow vehicle to sit for at least 5 minutes to allow all control modules to enter sleep mode
4. Open driver's door and locate the interior fuse box on the lower left dashboard panel
5. Photograph the fuse box cover diagram and all installed fuses for reference

Procedure

1. 1

   Disconnect battery negative terminal
   Open the hood and locate the battery in the engine compartment. Using a 10mm socket, loosen and remove the negative battery terminal. Secure the cable away from the battery post. Wait a minimum of 90 seconds for airbag system capacitors to discharge.
   Torque spec

   Battery Terminal Bolts6 Nm (4 lb-ft)
2. 2

   Remove fuse box access cover
   Open the driver's door fully. Locate the fuse box cover on the lower left side of the dashboard. Pull the cover open using the integrated pull tab. Remove all fuses and relays from the box, keeping them organized in their photographed positions. Store them in a clean, dry container.
3. 3

   Remove lower dashboard trim panel
   Locate and remove the Phillips screws securing the lower dashboard trim panel below the steering column (typically 2-3 screws). Gently pull the panel away from the dashboard, releasing the plastic clips. Disconnect any electrical connectors for the hood release illumination or other features if equipped. Set panel aside.
4. 4

   Remove fuse box cover mounting screws
   With the access panel removed, locate the cover screws securing the fuse box housing to the dashboard structure (typically 3-4 screws). Using a Phillips screwdriver or 8mm socket, remove these screws completely. Keep screws organized for reassembly.
   Torque spec

   Cover Screws11 Nm (8 lb-ft)
5. 5

   Disconnect main fuse box connectors
   Locate the large multi-pin connectors on the back and sides of the fuse box assembly (typically 3-5 connectors with locking tabs). Press the locking tab on each connector while pulling firmly straight back to disconnect. Note the orientation and position of each connector. Some connectors may have secondary locks that must be released first.
   ⚠Do not force connectors. Each has a specific release mechanism. Forcing can break connector tabs and require replacement of expensive wiring harnesses.
6. 6

   Remove ground strap connections
   Locate the ground strap(s) attached to the fuse box bracket or housing. Using a 10mm socket, remove the ground strap bolts. Clean the contact surfaces on both the strap terminals and mounting points using a wire brush to remove any corrosion or oxidation. This ensures proper electrical continuity upon reassembly.
   ⚠Ground connections are critical for proper electrical system operation. Corroded or loose grounds can cause multiple electrical malfunctions.
   Torque spec

   Ground Strap Bolt14 Nm (10 lb-ft)
7. 7

   Remove fuse box bracket bolts
   Locate and remove the bracket bolts securing the fuse box assembly to the dashboard support structure. There are typically 2-3 bolts accessible from the front and side. Use a 10mm socket to remove these bolts completely. Support the fuse box assembly while removing the final bolt.
   Torque spec

   Bracket Bolts20 Nm (15 lb-ft)
8. 8

   Remove fuse box assembly
   Carefully maneuver the fuse box assembly out from the dashboard opening. It may require tilting or rotating to clear the dashboard structure. Inspect the mounting bracket and dashboard structure for any damage or cracks. Inspect all connector terminals on the fuse box for corrosion, burning, or damage.
9. 9

   Prepare new fuse box assembly
   Unpack the new fuse box assembly and verify it matches the original part number and connector configuration. Apply a thin coat of dielectric grease to all connector pins on the new fuse box to prevent corrosion. Do not apply grease to the actual contact surfaces inside connectors.
10. 10

    Install new fuse box assembly
    Position the new fuse box assembly into the dashboard opening, carefully aligning it with the mounting bracket holes. Ensure no wiring is pinched or stressed. Hand-thread all bracket bolts before tightening any of them. Once all bolts are started, torque them to specification in a cross-pattern to ensure even mounting pressure.
    Torque spec

    Bracket Bolts20 Nm (15 lb-ft)
11. 11

    Reconnect ground straps
    Position the ground strap(s) onto their mounting points, ensuring the cleaned contact surfaces mate properly. Install the ground strap bolts and torque to specification. Verify solid metal-to-metal contact at all ground points.
    Torque spec

    Ground Strap Bolt14 Nm (10 lb-ft)
12. 12

    Reconnect main electrical connectors
    Reconnect all main fuse box connectors in reverse order of removal, referring to your photos. Each connector should click firmly into place. Engage all secondary locks if present. Tug gently on each connector to verify it is fully seated and locked.
13. 13

    Reinstall fuse box cover and mounting hardware
    Position the fuse box cover and install the cover screws, torquing to specification. Ensure the cover is flush and properly aligned with the dashboard. Reinstall the lower dashboard trim panel, reconnecting any electrical connectors, and secure with the Phillips screws.
    Torque spec

    Cover Screws11 Nm (8 lb-ft)
14. 14

    Reinstall fuses and relays
    Using your reference photos, reinstall all fuses and relays in their correct positions. Verify each fuse is the correct amperage rating for its position. Ensure all fuses are fully seated in their sockets.
15. 15

    Reconnect battery and initialize systems
    Reconnect the negative battery terminal and torque the terminal bolt to specification. Do not overtighten. Start the vehicle and verify basic operation. The power windows, radio presets, and clock will need to be reset. Some systems may require initialization procedures outlined in the verification section.
    ℹ️Multiple warning lights may illuminate initially. Most will clear after a short drive cycle once systems reinitialize.
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)

Reassembly

1. Reinstall the fuse box access cover, ensuring it closes and latches properly
2. Verify all dashboard trim panels are secure and properly aligned
3. Check that no tools or hardware were left in the dashboard area
4. Ensure all electrical connectors are fully seated and locked

Verification

• Turn ignition to ON position without starting and verify instrument cluster illuminates normally
• Start the engine and verify it starts normally without hesitation
• Test all interior electrical functions: lights, windows, door locks, climate control, radio, and wipers
• Verify all warning lights extinguish after engine start (except normal indicators like maintenance reminder)
• Test all exterior lighting functions: headlights, brake lights, turn signals, and reverse lights
• If equipped with power windows, perform auto-up/down initialization: roll each window fully down, then fully up and hold switch for 2 seconds after window stops
• Check for any stored diagnostic trouble codes using an OBD-II scanner; clear any communication-related codes that may have set during battery disconnection
• Verify horn, hazard lights, and other safety-critical electrical systems function properly
• Test drive vehicle and verify no electrical issues or warning lights appear during operation

More procedures for this vehicle