Accessing the Cabin Fuse Box on an Aston Martin DB9

Aston Martin DB9 LHD Car Fusebox Location
Fuse Box Locations

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

Torx Bit Socket
T30 Torx Bit

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.
  • Aston Martin DB9 Cabin FuseBox
    Cabin Fusebox with Cover Removed

    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.


What are all the fuses for?

Aston Martin DB9 Cabin Fusebox Layout Diagram
Cabin Fuse Box Layout (click for better view)

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

Aston Martin DB9 Cabin Fusebox Closeup
Close-up view of fusebox

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

Aston Martin DB9 Cabin Fusebox Fuse List
Click here to see a full list of the fuses from the Owners Manual

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

Aston Martin DB9 Cabin Fusebox Stand Alone Fuses
Stand alone fuses F1 through F5

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

9 thoughts on “Accessing the Cabin Fuse Box on an Aston Martin DB9

  1. Pingback: Depressurizing the Fuel System on an Aston Martin DB9 – Aston 1936

  2. Donny Crayne

    2005 db9 coupe here. The cigarette lighter outlet has no power and my reasesrch says cabin fuse 55 which is 20A is probably the fuse for it. Only problem is the numbers on the cabin fuse block shows no number 55 fuse. Can you point me to fuse 55?

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  3. jay

    Great info Steve, thank you!

    If speedometer and dash light are not working check (5) AMP fuse 46 in the passenger footwell fuse box.

    the fuse in question is only a 5 amp fuse, so it will not take much to cause it to blow, you have the glove box relay, tops and roof switch(volante) battery off switch, master light switch and the driver information all on this fuse a spike in any of these will cause the issue, in this case the car was on charge, was the charger disconnected from the mains on connection disconnection from the car, and in most cases we have found that the glove box motor has failed which technically it is the glove box relay not a direct connection to the motor that is on this circuit but still causes this fuse to blow and not fuse 17 strange but true,the identical part is used for the fuel flap but we do not see these failing often but these are used a lot more than the glove box, is it the lack of been used that is causing the problem

    the V8 vantage and DB9 use the same instrument clusters albeit variations on years, in my experience I have not seen this as a common issue or with the wiring looms apart from the odd poor connection or bad earth, but four cars in as many weeks with instruments not showing and glove box not opening all have been this fuse blown and two I know of have required replacement of the glove box motor, the other two I have not looked at, I can \not remember the last time I replaced an instrument cluster,

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      1. jay brown

        Hi Steve, thanks for the reply! No I don’t work on them, but I wanted to pass on info I received with you since you did such a great job on your detailed analysis on every aspect!!

        Here is a Reply from Kin-dig-it in Utah, the Car builder and TV show on Velocity network. below is the only thing he would do to an Aston, I agree! Lol

        Good afternoon Jay,

        The only thing I would do with that DB9 is a set of wheels with red pinstripe tires, nothing else that I could think of and there is some really great looks on their website.

        Best regards, Dave Kindig

        Take a look at http://bforgedwheels.com and

        http://www.wheelsandmore.com

        Like

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