Mazda RX-8 fuse box and relay

The Mazda RX-8  sports car was produced in 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 and 2012. During this time, the car has been restyled. Some people call it generational change. In this article you will find a description of the Mazda RX8 fuses and relays with box diagrams and their locations. Note the cigarette lighter fuse.

Mazda px8

The number of elements in boxes may differ from the one presented. Check your diagrams.

Passenger compartment fuse box

Located on the pillar under the dashboard on the driver’s side.

Block under the hood

Photo – scheme

Photo scheme


115А CIGAR – Cigarette lighter
27.5A ACC – Audio system, mirror control unit
320A AUX PWR / OUTLET – 2002-2007: Socket
47.5A A / C – Air Conditioning
510A METER – 2005-2012: Instrument Cluster
610A TCM – 2005-2007: Transmission Control Module
7SPARE – Free
8SPARE – Free
910A M.DEF – Heated mirrors
107,5A DSC – dsc system
1120 / 25A AUDIO – Audio system
1230А D.LOCK – Central locking, sunroof
1330A P.WIND – 2002-2007: Glass lifters 15A OUTLET 2008-2012: Socket
1415A ROOM – Interior lighting
15SPARE – Free
16SPARE – Free

For the operation of the cigarette lighter, the fuse number 1 at 15A, designated as CIGAR, is responsible for the additional OUTLET sockets.

Engine compartment fuse box

Located on the left side of the engine compartment.

Block under the hood photo

Circuit breakers


Block diagram under the hood


1120A MAIN – Main fuse
240A HEATER – Heater
360А AIR PUMP – Air blower
430A BTN – Glass lifts, central locking, sunroof, lighting
550А DEFOG – Heated rear window
630 / 40А FAN – Fan
830A ACC – Cigarette lighter, power mirrors, socket, audio system
930A FAN 2 – 2008-2012: Fan 2
1015A HEAD – High beam, headlight washer
1115A HEAD LOW R – Dipped right light
1215A HEAD LOW L – Low beam left
1315А DRL – Daytime running lights (high beam)
1430А DSC – DSC
1520А SEAT WARM – Heated seats
1620А H / CLEAN – Headlight washer
17R.FOG – Rear fog light
1815A FOG – Fog light
1910A A / C – Air conditioner
2030 / 40A IG – Engine Electronics
2130A P.WIND 1 – 2008-2012: Glass lifters
2215A IG KEY – Engine Electronics
2310 / 15A STOP – Brake light bulbs
2420А FUEL PUMP – Fuel pump
2515А HORN – Sound signal
2615А HAZARD – Hazard warning system and direction indicators
2715A ETV – Throttle body
2810A ST – Starter
2920А WIPER – Screen wiper and washer
3020A P.WIND – 2002-2007: Glass lifters
15A TCM – 2008-2012: Transmission Control Module
3115A ENGINE – Engine control unit, airbags, ABS, steering
3210A TAIL – Side light, license plate lighting
337,5 / 10А ILLUMI – Lighting
3410 / 15A EGI COMP1 – Engine control unit
3615A EGI IN.I – Engine Electronics
3720А P.WIND 2 – Glass lifters

The EPS 60A steering fuse can be located separately on the battery terminal.

For akb



Relay circuit


1 Trunk lid opener relayTrunk lid release relay
2 AIR pump relayPump relay
3 ACC relayACC relay
4 Horn relayHorn relay
5 Front fog light relayFront fog lamp relay
6 Drive-by-wire relayElectronic relay
7 Main relayMain relay
8 Headlight relayHeadlight relay
9 Starter relayStarter relay
10 Ignition relayIgnition relay
11 TNS relayRelay dimensions
12 Cooling fan relay No.3Cooling fan relay # 3
13 A/C relayAir conditioner relay
14 Rear window defroster relayHeated rear window relay
15 Cooling fan relay No.1Cooling fan relay # 1
16 Seat warmer relaySeat heating relay
17 Fuel pump relayFuel pump relay
18 Cooling fan relay No.2Cooling fan relay # 2
19 Blower relayFan relay
20 Fuel pump speed control relayFuel pump speed control relay


There is something to add to the material – we will be glad to receive your comments.

Comments 1

  • Can you please tell me how the prongs are on the ignition relay are? Mine is stuck and I need to order one NOW!! I can’t get it out. It is crumbling while I am trying to get it out!! But I need to order one so it will get here quickly!!
    I have a 2004 Mazda RX8.
    Thank you so much!!!

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