An Aston Martin DB9 has 3 separate fuse boxes, one in the engine compartment, one in the passenger compartment and the last in the boot.   You may need to access the Cabin Fuse Box for a variety of service reasons as it contains fuses for a myriad of the vehicles systems.  In addition to the fuses, this is also the location of the Fuel Pump Relay, something you may need to remove to depressurize the fuel system if you are working on your fuel injectors.

Accessing the Cabin Fusebox is pretty easy once you know where it is.  From the owners manual diagram above you’d think it was under the dash on the right.   Actually, its under the floor mat on the Passenger side, so it’s different than in the diagram shown if you have a Right Hand Drive (RDH) car.   That’s right, under the floor mat, not hidden under the dash.  Check out my video below for a clear view of where it is.

Tools Required

All you will need is a T30 Torx bit.  I had it on a 6″ long 3/8″ drive extension so I could use it as a handle, and a ratchet of course to crack them loose and tighten them.  A small inspection light might be handy to peer up at where the carpet tucks in to see how that’s done.

Removal Procedure

The process is pretty simple and will only take a couple of minutes:

• Move the passenger side seat as far rearward as possible to make the next steps easier.
• Remove the passenger side floor mat/carpet.   It’s beautiful carpet, and goes WAAY up under the dash, and tucks under some of the HVAC system, so just take your time.  Have a good look at where the carpet gets tucked in so you can put it back that way.
• Once you’ve removed the carpet, you’ll see the toe kick panel cover over that Fuse Box.  It’s held in place with seven (7) T30 Torx screws.  Remove the screws.

• 

  Carefully remove the cover panel.   Some caution should always be used working near an exposed electrical fuse box.  Since the battery may still be connected, be sure not to drop a screw or tool into this area that could accidentally short out.

With the cover off, you now have full access to all the fuses, relays and wiring harness connectors.

Re-installation Procedure

Normally I’d have a separate video for putting it back together, but there isn’t much to this or extra wisdom to chip in.  Just put it back together in the reverse order.  Start all the T30 Torx bolts loosely first to make sure you can get them all aligned and started, then snug them up.  I can’t find an official Aston Martin torque spec for this, but since they aren’t structural just snug them up (gee Aston, you think 7 bolts is enough to hold this small plate in place – yeesh!).

Here is a quick video of how to tackle this process.

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What are all the fuses for?

Fuse F43 – 10 Amp – Multi media module display / Phone (option) / GPS tuner (option) / Media player

Fuse F44 – 10 Amp – Airbag Module

Fuse F45 – 15 Amp – Accessory Socket and illumination

Fuse F46 – 5 Amp – Deployable Rollbars (Volante) / Convertible roof switch (Volante) / Driver Information / Master lamp switch / Glove box relay / Master lock switch / Battery off switch

Fuse F47 – 5 Amp – Interior lamps (front / footwell / rear) / Trunk lamps

Fuse F48 – 15 Amp – Front windshield washer relay and pump

Fuse F49 – 10 Amp – Airbag module

Fuse F50 – 5 Amp – Spare

Fuse F51 – 10 Amp – Diagnostic inputs / Centre stack switches

Fuse F52 – 5 Amp – Start button

Fuse F53 – 10 Amp – Headlamp levelling module / power steering module

Fuse F54 – 10 Amp – Engine Fuse Box, Trunk fuse box

Fuse F55 – 20 Amp – Spare

Fuse F56 – 10 Amp – Centre console module / Sounder module / Hazard switch

Fuse F57 – 15 Amp – Diagnostic connectors / Brake pedal switch

Fuse F58 – 10 Amp – High Beam (RH)

Fuse F59 – 10 Amp – High Beam (LH)

Fuse F60 – 15 Amp – Drivers seat heater

Fuse F61 – 15 Amp – Passenger seat heater

Fuse F62 – 20 Amp – A/C module

Fuse F63 – 20 Amp – Spare

Fuse F64 – 5 Amp – AM/FM receiver module

Fuse F65 – 5 Amp – Media play / Multi media module and display / Antenna amplifiers / Audio amplifier

Fuse F66 – 10 Amp – Centre console module / Infotainment control module

Fuse F67 – 15 Amp – Spare

Fuse F68 – 5 Amp – Spare

Fuse F69 – 5 Amp – Convertible roof module (Volante)

Fuse F70 – 15 Amp – Spare

Fuse F71 – Spare

Fuse F72 – Spare

Fuse F73 – 5 Amp – Spare

Fuse F74 – 15 Amp – Fuel pump

Fuse F75 – Spare

Fuse F76 – Spare

Fuse F77 – 15 Amp – Trunk power outlet

Fuse F78 – Blank

Fuse F79 – 5 Amp – Reversing lamps / Parking Assist module

Fuse F80 – 5 Amp – Battery ‘Off’ switch

Fuse F81 – 20 Amp – Ignition Switch

Fuse F82 – 25 Amp – Passenger door module

Fuse F83 – 25 Amp – Driver door module

Fuse F84 – 30 Amp – Passenger seat power and switch pack

Fuse F85 – 30 Amp – Driver seat power and switch pack

Fuse F86 – 5 Amp – Start button, Driver and passenger seats

Cabin Stand Alone Fuses

Fuse F1 – 40 Amp – Cabin Fuse box supply

Fuse F2 – 30 Amp – Cabin Fuse box supply

Fuse F3 – Blank

Fuse F4 – 40 Amp – Cabin Fuse box supply

Fuse F5 – 20 Amp – Cabin Fuse box supply