The second-generation Volvo S40 was produced from 2003 to 2012 , sharing its platform with the Volvo V50, C30, and C70. Known for its compact executive styling, advanced safety systems, and efficient engine lineup, the S40 became a strong competitor in the premium compact sedan segment.
In this article, you will find fuse box diagrams for the Volvo S40, covering model years 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 and 2012. These diagrams provide crucial details to help you locate, check, and replace fuses and relays when necessary.
What’s Included:
Fuse Box Diagrams – Detailed illustrations showing the fuse and relay layout.Fuse Panel Locations – Guidance on where to find the fuse panels inside the vehicle.Fuse Assignments – Explanations of each fuse and relay’s role, aiding in troubleshooting and repair.
Whether you’re replacing a blown fuse or diagnosing an electrical problem, this guide is an essential tool for keeping your Volvo S40 (2004–2012) running reliably and safely.
The fuse box is located under the glove compartment.
Assignment of fuses in the engine compartment
№ Description Amp 1 Cooling / radiator fan 50 2 Power steering 80 3 Feed to passenger compartment fuse box 60 4 Feed to passenger compartment fuse box 60 5 PTC element, air preheater (opt). 80 6 2007, 2009–2011: Not in use / Reserve. 2008: Glow plugs (4-cyl 60 A; 5-cyl 70 A). 2012: Glow plugs (DRIVe 60 A; 5-cyl 70 A).— 7 ABS pump 2007–2011: 30A; 2012: 40A8 ABS valves 20 9 Engine functions 30 10 Climate system / ventilation blower 40 11 Headlamp / headlight washers 20 12 Heated rear window (feed) 30 13 Starter motor relay / actuator solenoid 30 14 Trailer wiring / connector (option) 40 15 Not in use / Reserve — 16 Feed to audio / infotainment system 30 17 Windscreen wipers 30 18 Feed to passenger compartment fuse box 40 19 Not in use / Reserve — 20 Horn 15 21 2007, 2009–2011: Not in use. 2008 & 2012: Fuel-driven additional heater / passenger compartment heater (opt).— 22 Not in use / Reserve — 23 ECM / TCM feed ECM (5-cyl) & TCM (5-cyl) (10A ) / TCM (4-cyl) (15A ). 24 2007, 2009–2011: Not in use. 2008 & 2012: Heated fuel filter; PTC element, oil trap (5-cyl diesel).— 25 2007–2011: Not in use / Reserve. 2012: CEM (Start/Stop).— 26 Ignition switch 15 27 A/C compressor (incl. water shut-off valve on some years) 10 28 Not in use / Reserve — 29 Front fog lamps / DRL (opt). 15 30 2007, 2009–2011: Not in use. 2008: ECM (1.6 l petrol; 2.0 l diesel) (3A). 2012: Coolant pump (Start/Stop) (10A).3-10 31 2007, 2009–2011: Not in use. 2008 & 2012: Voltage regulator, alternator (4-cyl petrol).10 32 Fuel injectors / engine-management loads (per engine) 10 33 Heated oxygen sensor; vacuum pump (variant-dependent) 20 34 Ignition coils; climate unit pressure sensor (plus listed engine-variant loads) 10 35 Engine sensor valves; A/C relay; EVAP / VVT / MAF / related engine controls (per engine) 15 36 ECM; throttle/accelerator sensor; lambda (per engine) 10
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Fuses 1–18 are relays/circuit breakers and should only be removed or replaced by an authorized Volvo service technician.
Fuses 19–36 may be changed at any time when necessary.
Location of fuses for the Start/Stop function
№ Component Amp 11M/1 Engine compartment, electrical distribution unit 125 11M/2 Sensor, battery monitoring 15 25 Central electronic module (CEM) (Reference voltage standby battery), diesel engine 10
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Assignment of fuses in the passenger compartment
№ Description Amp 37 Not in use / Reserve – 38 Not in use / Reserve – 39 Not in use / Reserve – 40 Not in use / Reserve – 41 Not in use / Reserve – 42 Not in use / Reserve – 43 Telematics (option), Audio, RTI (option), Bluetooth (option) 15 44 SRS; ECM (5-cyl, DRIVe) 10 45 12-V socket 15 46 Glovebox, instrument panel, and footwell lighting (courtesy) 5 47 Interior lighting (2012 add: remote garage door opener, option) 5 48 Windshield washers 15 49 SRS; Occupant Weight Sensor (OWS) 10 50 Not in use / Reserve – 51 2007: Park assist (opt), AWD, Bi-Xenon (opt) | 2008: Additional passenger-heater; AWD; fuel-filter relay (heating) | 2009–2011: AWD; fuel-filter relay | 2012: PTC air preheater (opt); relay coil heated fuel filter (5-cyl diesel); AWD10 52 Transmission control module (TCM); ABS 5 53 Power steering 10 54 Park assist (opt), Bi-Xenon (opt) 10 55 2007, 2009–2011: Not in use | 2008, 2012: Keyless control module20 56 Remote control module; siren module 10 57 OBD-II data link connector; brake light switch 15 58 Right main/high beam; auxiliary lights relay coil 7.5 59 Left main/high beam 7.5 60 Seat heating, driver (option) 15 61 Seat heating, passenger (option) 15 62 Sunroof / Moonroof (option) 20 63 Power window & door lock — rear passenger door 20 64 Audio; RTI (opt) 5 65 Audio / Infotainment 5 66 ICM (infotainment control module); climate control 10 67 Not in use / Reserve – 68 Cruise control 5 69 Climate system; rain/light sensor; 2008: + BLIS button | 2009–2011: + BUS button (opt) | 2012: + parking assist (opt), DRIVe 5 70 Not in use / Reserve – 71 Not in use / Reserve – 72 Not in use / Reserve – 73 Sunroof; overhead console for interior lighting; rear seatbelt reminder; auto-dim mirror (option) 5 74 Fuel pump relay 15 75 Not in use / Reserve – 76 Not in use / Reserve – 77 Electrical socket (cargo), Accessories control module (opt) 15 78 Not in use / Reserve – 79 Reversing / back-up lights (2012 add: mirror dimming signal) 5 80 Not in use / Reserve – 81 Power window & door lock — rear driver door 20 82 Power window — front passenger door 25 83 Power window & door lock — front driver door 25 84 Power passenger seat 25 85 Power driver seat 25 86 Interior/trunk lighting relay; power seats (2012 add: fuel level display on some engines) 5
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