Seat - Front

Procedure for removing and installing the front seat assembly on a 2009 Aston Martin DB9, including seat belt buckle disconnection, electrical harness removal, and seat track fasteners.

Warnings

Tools required

Parts

• Front seat assembly (if replacing) × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake.
2. Disconnect battery negative terminal and wait 15 minutes for airbag system discharge.
3. Move seat to full forward position using power adjustment controls to access rear mounting bolts.
4. Lower seat to lowest position to provide clearance for removal.
5. Open door fully to allow clearance for seat extraction.

Procedure

1. 1

   Disconnect seat belt buckle anchor
   Locate the seat belt buckle anchor at the inboard side of the seat, mounted to the seat frame or floor. Remove the Torx fastener securing the buckle stalk to the mounting point. Verify the exact fastener type, size, and torque for the seat belt buckle anchor against the Aston Martin DB9 workshop manual before removal. Set buckle assembly aside. Note: Verify the exact Torx size against the OEM DB9 workshop manual before removal. Note: Install Torx fastener and tighten to the Aston Martin-specified torque for the seat belt buckle anchor (verify exact value in official DB9 workshop manual).
2. 2

   Disconnect electrical connectors
   Identify all electrical connectors under the seat. DB9 front seats typically have 3-5 connectors for power adjustment motors, heating elements, occupancy sensor, and side airbag module (if equipped). Press release tabs and disconnect each connector. Note routing of harnesses for reinstallation.
3. 3

   Remove rear seat track mounting bolts
   With seat in full forward position, locate the rear mounting bolts on both seat tracks. Remove 2 bolts (one per track) securing the rear of the seat tracks to the floor. Verify the exact fastener type and size against the Aston Martin DB9 workshop manual before removal (do not assume E-Torx without confirmation). Place bolts aside in organized manner. Note: The exact fastener type and size must be verified against the OEM DB9 workshop manual (commonly E-Torx or hex-head on Aston Martin applications, but confirm before ordering tools).
   Torque spec

   Seat Mounting Bolts43 Nm (32 lb-ft)
4. 4

   Move seat to access front mounting bolts
   Manually slide seat rearward as far as possible to expose front mounting bolts. If seat will not slide freely, verify that all electrical connectors were disconnected in Step 2 and no harnesses are caught.
5. 5

   Remove front seat track mounting bolts
   Locate the front mounting bolts on both seat tracks. Remove 2 bolts (one per track) securing the front of the seat tracks to the floor. Verify the front fastener type and size against the Aston Martin DB9 workshop manual before removal (do not assume E-Torx without confirmation). Keep front and rear bolts separate if they differ.
   Torque spec

   Seat Mounting Bolts43 Nm (32 lb-ft)
6. 6

   Extract seat from vehicle
   With all four mounting bolts removed and all electrical connections disconnected, carefully tilt the seat rearward slightly to clear the front mounting points. Lift seat assembly upward and angle it to extract through the door opening. Use caution not to contact door frame, B-pillar trim, or center console. An assistant is recommended due to seat weight and awkward extraction angle.
7. 7

   Position replacement or serviced seat
   Align new or serviced seat assembly with mounting points. Guide seat through door opening at an angle, then lower into position over the four floor mounting points. Ensure seat tracks align with mounting holes and no wiring harnesses are pinched beneath seat.
8. 8

   Install front seat track mounting bolts
   With seat positioned fully rearward to access front bolts, install the two front mounting bolts (one per track) finger-tight. Do not fully torque at this stage to allow for alignment adjustment.
   Torque spec

   Seat Mounting Bolts43 Nm (32 lb-ft)
9. 9

   Install rear seat track mounting bolts
   Slide seat forward to access rear mounting points. Install the two rear mounting bolts (one per track) finger-tight. Verify all four bolts are started and seat is properly aligned before proceeding.
   Torque spec

   Seat Mounting Bolts43 Nm (32 lb-ft)
10. 10

    Torque all seat mounting bolts
    Using torque wrench, tighten all four seat mounting bolts to the manufacturer-specified torque (verify exact value in the Aston Martin DB9 workshop manual) in a cross-pattern (front left, rear right, front right, rear left) to ensure even seating. Verify each bolt reaches specified torque and seat does not shift during tightening. Note: Using torque wrench, tighten all four seat mounting bolts to the Aston Martin specified torque (verify value in DB9 workshop manual before final tightening). Tighten evenly in stages, confirming the seat does not shift during tightening. Note: Using torque wrench, tighten all four seat mounting bolts to the Aston Martin-specified torque (verify exact value in official DB9 workshop manual before tightening) in a cross-pattern (front left, rear right, front right, rear left) to ensure even seating.
    Torque spec

    Seat Mounting Bolts43 Nm (32 lb-ft)
11. 11

    Reconnect electrical connectors
    Route electrical harnesses as photographed during removal. Reconnect all connectors under seat, ensuring each clicks fully into place. Verify no harnesses are stretched, pinched, or interfering with seat movement.
12. 12

    Reinstall seat belt buckle anchor
    Position seat belt buckle stalk to mounting point on seat frame or floor. Install Torx fastener and tighten securely. Verify buckle operates freely and is not twisted.
13. 13

    Reconnect battery and clear fault codes
    Reconnect battery negative terminal. Use an Aston Martin-capable diagnostic scan tool (generic OBD scanners often cannot access the SRS/occupancy modules on this platform) to clear any airbag or occupancy sensor fault codes that may have been set during disconnection. If codes do not clear or return immediately, verify all electrical connections were properly seated in Step 11.

Reassembly

1. Reassembly is performed in reverse order of disassembly as outlined in steps 7-13.
2. Ensure all electrical connectors are fully seated and wiring harnesses are routed to avoid interference with seat travel.
3. Torque all seat mounting bolts to specification in a cross-pattern to ensure proper load distribution.

Verification

• Test all seat power adjustment functions (fore/aft, recline, height, lumbar if equipped) through full range of motion.
• Verify seat heaters activate if equipped.
• Confirm seat belt buckle latches and releases properly.
• Check for airbag warning light on instrument cluster - light should extinguish after brief self-test at ignition on.
• Physically attempt to rock seat to verify all mounting bolts are secure with no movement.
• Test occupancy sensor if equipped by verifying passenger airbag status light responds correctly to weight in seat.

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