Trunk Latch

Remove and replace the trunk latch assembly on a 2009 Aston Martin DB9, including electrical connector disconnection and trim panel access.

Warnings

Tools required

Parts

• Trunk latch assembly × 1 — Use OEM specification
• Trim panel clips (if damaged) × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake.
2. Open trunk fully and prop open if latch is malfunctioning using a suitable support.
3. Disconnect negative battery terminal and wait 2 minutes to allow electrical system discharge.
4. Gather all tools and position work light for visibility inside trunk latch area.

Procedure

1. 1

   Access trunk latch mounting area
   From inside the trunk, locate the trunk latch mechanism at the center-rear of the trunk opening. The latch is typically covered by a small trim panel or accessed through the trunk liner. Identify the trim panel surrounding the latch area—this may be a small rectangular or oval-shaped panel held by clips and/or fasteners. Note: OEM trunk latch part number must be verified against Aston Martin parts catalog for the specific 2009 DB9 VIN before ordering.
2. 2

   Remove trunk latch trim panel
   Carefully insert panel removal tool at the edges of the trim panel covering the latch area. Release the retaining clips by gently prying outward, working around the perimeter. Remove the trim panel to expose the latch assembly and electrical connector. Note the location of all clips for reinstallation.
3. 3

   Disconnect latch electrical connector
   Locate the electrical connector attached to the trunk latch assembly. Press the locking tab on the connector and pull straight back to disconnect. If connector is difficult to access, use a flashlight to verify the locking tab location. Take a photo of the connector orientation for reference during reinstallation.
4. 4

   Remove trunk latch mounting fasteners
   Locate the fasteners securing the trunk latch to the body structure. Using the appropriate driver, remove all mounting fasteners completely and set aside in a safe location. Support the latch assembly as you remove the final fastener to prevent it from falling. NOTE: Verify exact fastener count and drive type against OEM documentation before beginning. Note: Locate the fasteners securing the trunk latch to the body structure. Using the appropriate driver, remove all mounting fasteners completely and set aside in a safe location. Verify the exact fastener count and head type against the Aston Martin DB9 workshop manual before proceeding. Support the latch assembly as you remove the final fastener to prevent it from falling. Note: Locate the fasteners securing the trunk latch to the body structure. Using the appropriate driver, remove all mounting fasteners completely and set aside in a safe location. Support the latch assembly as you remove the final fastener to prevent it from falling. (Verify exact fastener count and head type against OEM documentation for the 2009 DB9.) Note: Fastener count and drive type unverified — confirm against the 2009 Aston Martin DB9 workshop manual before ordering tools or removing hardware.
5. 5

   Remove trunk latch assembly
   With all fasteners removed and electrical connector disconnected, carefully withdraw the trunk latch assembly from its mounting location. Maneuver the latch through the opening in the body structure, noting the orientation and position of any alignment pins or guides. Inspect the mounting area for damage or corrosion.
6. 6

   Prepare new trunk latch assembly
   Unpack the new trunk latch assembly and compare it to the removed unit to verify correct part number and configuration. Check that the latch mechanism operates smoothly by manually actuating it several times. Verify that the electrical connector matches the vehicle harness connector.
7. 7

   Install new trunk latch assembly
   Position the new trunk latch assembly into the mounting location, aligning any guide pins or tabs with their corresponding holes in the body structure. Ensure the latch is oriented correctly with the strike plate alignment—the latch hook should face toward the trunk opening. Hold the latch firmly in position while installing fasteners.
8. 8

   Install trunk latch mounting fasteners
   Thread all Torx mounting fasteners by hand first to ensure proper thread engagement and alignment. Once all fasteners are started, tighten them in a cross-pattern (if applicable) to the specified torque. Do not overtighten, as this may crack the latch housing or strip threads in the body structure. Note: manufacturer-specified torque (verify against Aston Martin DB9 OEM service documentation before tightening) Note: Refer to the Aston Martin DB9 workshop manual for the specific trunk latch fastener torque; do not apply a generic body panel bolt value. Note: torque per OEM specification for the trunk latch mounting fasteners (verify against 2009 DB9 workshop manual before applying) Note: Trunk Latch Mounting Fasteners (per DB9 OEM spec) Note: Torque unverified — obtain the specific trunk latch fastener torque from the 2009 Aston Martin DB9 workshop manual and do not substitute a generic body panel bolt value.
   Torque spec

   Body Panel Bolts25 Nm (18 lb-ft)
9. 9

   Reconnect latch electrical connector
   Align the electrical connector with the trunk latch connector terminal, referencing the photo taken during disassembly if needed. Push the connector firmly until the locking tab clicks into place. Gently tug on the connector to verify it is fully seated and locked.
10. 10

    Reinstall trunk latch trim panel
    Position the trim panel over the latch assembly, aligning all clip locations with their corresponding receptacles in the body structure. Press firmly around the perimeter of the panel to seat all clips. Verify the panel sits flush and does not have gaps or misalignment.
11. 11

    Reconnect battery and test latch operation
    Reconnect the negative battery terminal. Close the trunk and verify that the latch engages properly with the strike plate and holds the trunk securely closed. Open the trunk using all available release methods for this vehicle (interior release, key fob, and/or exterior button). Listen for proper latch/actuator operation and verify smooth operation without binding.

Reassembly

1. Reinstallation follows removal in reverse order.
2. Ensure all electrical connectors are fully seated and locked before testing.
3. Replace any damaged trim clips to ensure proper panel retention.
4. Do not force trim panels during reinstallation—alignment tabs must engage properly before pressing clips into place.

Verification

• Close trunk firmly and verify latch engages with audible click and trunk remains securely closed.
• Test trunk opening from all control points: interior release button, key fob remote, and exterior button/keyhole.
• Verify trunk warning light on instrument cluster extinguishes when trunk is properly closed.
• Check for proper alignment of trunk with body—latch should not cause misalignment or difficulty closing.
• Confirm no rattles or loose components when driving over bumps.

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