Fuel Pump Relay

Replace the fuel pump relay in a 2017 Maserati Levante 3.0L V6 Twin Turbo, located in the vehicle's power distribution center.

Warnings

Tools required

Parts

• Fuel pump relay × 1 — Use OEM specification - Maserati part number recommended

Preparation

1. Park vehicle on level surface and apply parking brake
2. Turn ignition off and remove key fob from vehicle interior
3. Allow engine to cool for at least 30 minutes if recently operated
4. Open hood and secure with prop rod
5. Locate battery in engine compartment (passenger side)
6. Photograph or document relay position and orientation before removal
7. Have vehicle documentation ready to identify correct relay position

Procedure

1. 1

   Disconnect battery negative terminal
   Using a 10mm socket, loosen the battery negative terminal bolt. Remove the negative cable from the battery post and secure it away from the battery to prevent accidental reconnection. Wait at least 5 minutes for electrical system capacitors to discharge.
   ⚠Always disconnect negative terminal first to prevent short circuits. Do not allow terminal to contact battery post during procedure.
   Torque spec

   Battery Terminal Bolts7 Nm (5 lb-ft)
2. 2

   Locate power distribution center
   The main power distribution center (fuse/relay box) is located in the engine compartment on the driver's side near the firewall. Remove the protective cover by releasing the clips on each side of the cover. Lift cover straight up to avoid damaging mounting tabs.
3. 3

   Identify fuel pump relay
   Locate the fuel pump relay using the diagram on the underside of the power distribution center cover or in the owner's manual. The fuel pump relay is typically labeled 'F/PUMP' or similar. On the Levante, it is usually a standard micro relay in position designated for fuel pump control. Take a photo of the relay position for reference.
   ⚠Several relays may appear identical. Removing the wrong relay can cause diagnostic trouble codes or system malfunctions. Verify position twice before proceeding.
4. 4

   Test old relay (optional but recommended)
   Before removing the relay, note its exact orientation. Using a multimeter, test the old relay to confirm it is faulty. Check for continuity between terminals 85 and 86 (coil), and verify switching function between terminals 30 and 87 when 12V is applied to the coil. This confirms diagnosis before replacement.
5. 5

   Remove fuel pump relay
   Firmly grasp the relay body and pull straight up with steady, even pressure. If relay is difficult to remove, use a relay puller tool or gently rock the relay side-to-side while pulling upward. Do not pry against the relay socket or surrounding components. Inspect the socket terminals for corrosion, burn marks, or damage.
   ⚠Excessive force or prying can damage socket terminals, requiring replacement of entire power distribution center. Apply only straight upward force.
6. 6

   Inspect and clean relay socket
   Examine the relay socket terminals for corrosion, discoloration, or heat damage. If corrosion is present, spray contact cleaner into the socket and allow to dry completely. Use compressed air to remove any debris. Check that all socket terminals are straight and properly aligned. If socket shows heat damage or terminal deformation, the power distribution center may require replacement.
7. 7

   Verify new relay specifications
   Compare the new relay to the old relay. Verify that pin configuration, amperage rating, and physical dimensions match exactly. The relay should have matching part numbers or be confirmed as a direct OEM replacement. Check that the relay terminal arrangement matches the socket (typically 4 or 5 pin configuration).
   ⚠️Using incorrect relay amperage rating can cause fuel pump failure or electrical fire. Verify specifications match OEM requirements exactly.
8. 8

   Install new fuel pump relay
   Apply a small amount of dielectric grease to the relay terminals if desired for corrosion protection. Align the new relay with the socket, ensuring correct orientation matching the removed relay. Press the relay firmly into the socket until it seats completely and is flush with surrounding relays. The relay should click into place and not wobble or sit proud of the socket.
9. 9

   Reinstall power distribution center cover
   Position the cover over the power distribution center, ensuring all relay and fuse positions are accessible and nothing is pinched. Press down evenly on all corners until mounting clips engage with an audible click. Verify the cover is fully seated and secure.
10. 10

    Reconnect battery negative terminal
    Clean battery terminal and cable clamp contact surfaces if corrosion is present. Place negative cable over negative battery post and hand-tighten bolt. Using a 10mm socket and torque wrench, tighten the negative terminal bolt to specification. Ensure connection is tight and cable cannot rotate on post.
    ⚠Over-torquing can damage battery post. Under-torquing creates high resistance connection that can cause voltage drop and system malfunctions.
    Torque spec

    Battery Terminal Bolts7 Nm (5 lb-ft)

Reassembly

1. Ensure all power distribution center clips are fully engaged and cover is secure
2. Verify battery terminal connection is tight and shows no signs of looseness
3. Confirm no tools or parts were left in engine compartment
4. Close hood securely

Verification

• Turn ignition to ON position (do not start engine). Listen for fuel pump priming sound (2-3 second hum from rear of vehicle). This confirms relay is functioning.
• Check instrument cluster for any warning lights related to fuel system or electrical faults
• Start engine and verify it starts normally without extended cranking. Engine should start within normal cranking time (2-4 seconds).
• Allow engine to idle for 2-3 minutes and verify smooth operation with no stumbling or fuel starvation symptoms
• Turn engine off, wait 30 seconds, and restart to verify fuel pump primes correctly on subsequent starts
• Use OBD-II scanner to check for any fuel system or electrical diagnostic trouble codes. Clear codes if any were set during battery disconnection.
• Test drive vehicle to confirm normal acceleration and no fuel delivery issues under load
• After test drive, verify no fuel odor is present and check power distribution center area for any signs of overheating or burning smell

Related trouble codes on this vehicle

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