This procedure covers removal and replacement of the engine bay fuse box assembly on a 2017 Maserati Levante with 3.0L V6 Twin Turbo engine, including proper disconnection of electrical connections and grounding components.

Warnings

Tools required

Parts

• Engine bay fuse box assembly × 1 — Use OEM specification
• Fuse box cover × 1 — Use OEM specification
• Fuse box mounting bracket × 1 — Use OEM specification if damaged
• Ground strap terminal hardware × 1 — Use OEM specification if corroded

Preparation

1. Park vehicle on level surface and engage parking brake
2. Ensure engine has been off for at least 2 hours and is completely cool
3. Gather all tools and replacement parts before beginning
4. Take multiple photographs of fuse box layout, relay positions, and wire routing for reference
5. Prepare labels or tape to mark electrical connectors during removal
6. Obtain radio security code if equipped to reprogram after battery disconnection

Procedure

1. 1

   Disconnect battery and allow system discharge
   Open hood and locate battery in engine bay. Loosen negative battery terminal bolt using 10mm socket and remove cable from terminal. Secure cable away from battery post. Wait minimum 15 minutes for electrical system capacitors to discharge and airbag system to deactivate.
   Torque spec

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

   Remove engine cover and access panels
   Remove plastic engine cover by lifting at rear and pulling forward to release mounting grommets. Set aside carefully. Remove any air intake components or trim panels obstructing access to fuse box area on passenger side of engine bay.
3. 3

   Document and remove fuses and relays
   Open fuse box cover by releasing tabs or removing cover screws. Using fuse puller tool, carefully remove all fuses and relays one at a time, documenting their positions. Store fuses and relays in organized manner matching their original locations. Inspect each fuse for damage or corrosion.
   ℹ️Some relays may be secured with small screws. Do not force removal as tabs can break easily.
   Torque spec

   Cover Screws11 Nm (8 lb-ft)
4. 4

   Disconnect electrical connectors
   Locate all electrical connectors attached to rear and sides of fuse box assembly. Release locking tabs using flat blade screwdriver or by pressing release mechanisms. Label each connector with position reference. Carefully disconnect all harness connectors from fuse box, noting any secondary locking devices that must be released first.
   ⚠Connector locking mechanisms vary. Do not force connectors as tabs break easily. Some connectors require sliding secondary locks before main connector can be released.
5. 5

   Remove ground connections
   Locate ground strap(s) attached to fuse box assembly or mounting bracket. Using wire brush, note condition of contact surfaces. Remove ground strap bolts using appropriate socket. If ground connections show corrosion, clean contact surfaces thoroughly with wire brush until bright metal is visible on both strap terminal and mounting surface.
   ℹ️Ground connections are critical for proper electrical system operation. Clean contact surfaces are essential.
   Torque spec

   Ground Bolt14 Nm (11 lb-ft)

   Ground Strap Bolt14 Nm (10 lb-ft)
6. 6

   Disconnect terminal bolts and power feeds
   Locate main power feed terminal bolts connecting battery power to fuse box. These are typically large gauge wires with crimped terminals. Remove terminal bolts using appropriate socket, supporting wire harness to prevent strain on connections. Mark power feed positions for correct reinstallation.
   Torque spec

   Battery Terminal Bolts6 Nm (4 lb-ft)
7. 7

   Remove fuse box mounting hardware
   Locate fuse box mounting bolts securing assembly to body or mounting bracket. Remove mounting bolts using appropriate socket. If fuse box has additional module mounting bolts for internal components, note their locations. Support fuse box assembly as final bolts are removed.
   Torque spec

   Module Mounting Bolts8 Nm (6 lb-ft)

   Bracket Bolts22 Nm (16 lb-ft)
8. 8

   Remove fuse box assembly
   Carefully lift fuse box assembly from mounting location, ensuring no wire harnesses or connectors are still attached. Check underneath and sides for any hidden brackets or fasteners. Remove assembly from engine bay and place on clean work surface. Inspect mounting area for damage, corrosion, or debris.
9. 9

   Transfer components to new fuse box
   If replacing fuse box, transfer any removable modules, connector screws, or mounting hardware from old unit to new unit. Ensure all connector housings are clean and free of corrosion. Inspect seals and gaskets for damage. Apply small amount of dielectric grease to connector terminals if specified.
   ℹ️Some fuse boxes require programming or initialization. Verify with dealer if new unit needs coding before installation.
   Torque spec

   Connector Screws4 Nm (3 lb-ft)
10. 10

    Install new fuse box assembly
    Position new or serviced fuse box into mounting location, aligning with mounting bracket holes. Install mounting bolts hand-tight first to ensure proper alignment. Tighten mounting bolts to specification using torque wrench in cross pattern. Install any bracket bolts and module mounting bolts to specification.
    Torque spec

    Module Mounting Bolts8 Nm (6 lb-ft)

    Bracket Bolts22 Nm (16 lb-ft)
11. 11

    Reconnect ground connections
    Ensure ground contact surfaces on fuse box mounting area and ground strap terminals are completely clean and free of paint, corrosion, or debris. Position ground straps to mounting points and install ground bolts. Tighten ground connection bolts to specification using torque wrench. Verify solid metal-to-metal contact.
    ⚠Poor ground connections will cause multiple electrical faults. Ensure clean, tight connections.
    Torque spec

    Ground Bolt14 Nm (11 lb-ft)

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

    Reconnect power feeds and terminals
    Reconnect main power feed terminals to fuse box in correct positions as marked during removal. Install terminal bolts and tighten to specification using torque wrench. Ensure wire terminals are seated flat against contact surfaces with no gaps.
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)
13. 13

    Reconnect electrical harness connectors
    Using reference photos and labels, reconnect all electrical harness connectors to fuse box in correct positions. Ensure each connector clicks fully into place and locking tabs engage properly. Install any secondary locking devices. Verify no connectors are crossed or forcing into wrong positions.
14. 14

    Reinstall fuses and relays
    Using documentation from removal, reinstall all fuses and relays into correct positions in fuse box. Ensure each fuse and relay seats fully into socket. Install fuse box cover and secure with cover screws torqued to specification. Verify cover seals properly to prevent water intrusion.
    Torque spec

    Cover Screws11 Nm (8 lb-ft)
15. 15

    Reconnect battery and initialize systems
    Reconnect negative battery cable to battery terminal. Tighten battery terminal bolt to specification - do not overtighten as terminal can be damaged. Turn ignition to ON position without starting engine. Observe instrument cluster for warning lights. Clear any stored fault codes using scan tool if needed. Reset radio, clock, and windows as necessary.
    ⚠Battery terminal bolts have low torque specification. Overtightening will damage terminal or post.
    Torque spec

    Battery Terminal Bolts6 Nm (4 lb-ft)

Reassembly

1. Reinstall any air intake components or trim panels removed for access
2. Reinstall engine cover ensuring all mounting grommets engage properly
3. Perform visual inspection of all connections and hardware
4. Verify no tools or parts are left in engine bay

Verification

• Start engine and verify it runs normally without warning lights
• Test all major electrical systems: lights, windows, wipers, climate control, infotainment
• Verify no warning lights remain on instrument cluster after initialization period
• Test both low and high beam headlights, turn signals, and brake lights
• Check for proper operation of power windows and door locks
• Verify climate control blower operates at all speeds
• Use scan tool to verify no fault codes present in any control modules
• Road test vehicle to confirm all systems function normally under driving conditions
• Inspect fuse box area for any signs of heat, smoke, or unusual odors after test drive

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