Learn about Citroën C4 2004-2010 fuse box and relay’s locations, functions, and maintenance tips for optimal vehicle electrical system.

The Citroën C4 (2004-2010) is available in multiple body styles, including a five-door hatchback and a three-door coupe, both characterized by their modern, sleek design and innovative technology. These models come equipped with various electrical features such as power windows, mirrors, lighting systems, and infotainment, all of which rely on a well-functioning electrical system. The fuse box and relays are key components of this system, ensuring that each electrical feature operates smoothly. The main fuse box is usually located under the dashboard, while additional relays may be found in the engine compartment, controlling components like the air conditioning, lighting, and fuel pump. Proper maintenance of the fuse box and relays ensures reliability of the car’s electrical components.

MUST READ: DYI – How to Check Car Fuses?

(2004-2010) Citroën C4 fuse box and relay with Diagram

WARNING

  • Never replace a fuse with one that has a higher amperage rating.
  • A fuse with a too-high amperage could damage the electrical part and cause a fire.
  • On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
  • If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
  • Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

Citroën C4 2004-2010 fuse assignment

  • Cigar lighter (power outlet) fuses are the fuses F8 (Front 12V socket) and F9 (Cigar lighter / Rear 12V socket) in the Instrument panel fuse box.

Year of production: from 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011

Fuse box location

There are two fuseboxes under the dashboard, one fusebox in the engine compartment and another on the battery.

Dashboard fuse boxes

The location of the fuses in the passenger compartment (LHD): Citroen C4 (2004-2010)

Left-hand drive vehicles:

It is located in the lower dashboard (left-hand side).

The location of the fuses in the passenger compartment (RHD): Citroen C4 (2004-2010)

Right-hand drive vehicles:

Citroen C4 2004 2010 20180321142856805
Citroen C4 2004 2010 20180321142751357

To access the fuses below the dashboard, pull back the access cover, undo the screws a quarter turn and tilt the whole unit.

Engine compartment

The location of the fuses in the engine compartment: Citroen C4 (2004-2010)
Citroen C4 2004 2010 20180321142828356

To access the engine compartment fusebox, detach and remove the cover.

Fuses on the battery
Citroen C4 2004 2010 20180321142840993

Detach and remove the cover

Fuse box diagrams

2004

Dashboard Fuse box 1
Instrument panel fuse box diagram: Citroen C4 (2004)

Assignment of the fuses in the Dashboard Fuse box 1 (2004)

NumberRatingFunctions
F115 ACentral locking
F230 ACentral locking – Deadlocking
F35 AAirbags and pretensioners
F410 ADiagnostic socket – Brake switch – Photochromic rear view mirror – ESP – Coolant level sensor – Diesel fuel additive system – Power steering Clutch pedal switch (ESP, cruise control and speed limiter)
F530 AElectric front windows – Heated exterior rear view mirrors
F630 AElectric rear windows
F75 AInterior lighting
F820 AAudio system – NaviDrive – Display – Alarm – Front 12V socket – Trailer relay unit -Driving school module
F930 ACigar lighter – Rear 12V socket
F1015 ATyre pressure sensor – Auto. – STOPLAMP switch
F1115 AIgnition – Diagnostic socket – Particle filter
F1215 AElectric seat – Lane wandering alert – Parking assistance
F135 ARain sensor – Sunlight sensor – (6 speed) Electronic Gearbox System – Engine relay unit
F1415 AAir conditioning – Instrument panel – Tachometer – Airbags and pretensioners -Trailer relay unit – Bluetooth telephone
F1530 ACentral locking – Deadlocking
F16SHUNT
F1740 AHeated rear screen
Dashboard Fuse box 2
Citroen C4 mk1 fuse box under dashboard1

Assignment of the fuses in the Dashboard Fuse box 2 (2004)

NumberRatingFunctions
F3620 AHi Fi amplifier
F3730 AFront left hand electric seat
F3920 AHeated seats
Engine compartment
Under-hood fuse box diagram: Citroen C4 (2004)

Assignment of the fuses in the Engine compartment (2004)

NumberRatingFunctions
F120 AECU engine management – Cooling fan
F215 AWarning
F310 AWindscreen and rear screen wash
F420 AHeadlamp washer
F515 AFuel pump
F610 AAuto. – Xenon lamps – Directional headlamps – Canister purge electrovalve (2.0 16V engine)
F710 AABS ECU/ESP ECU – Power steering
F820 AStarter
F910 AAdditional heating control unit (Diesel) – Engine coolant level switch
F1030 AEnqine electrovalve – Water-in-diesel-fuel sensor – ECU enqine manaqement -Injectors – Ignition coil – Oxygen sensor – Canister purge electrovalve (1.4 16V and 1.6 16V engines)
F1140 AAir blower – Air conditioning
F1230 AWindscreen wiper
F1340 ABuilt-in Systems Interface
F1430 AAir pump (engine 2.0i 16V)

2008, 2009, 2010

Dashboard Fuse box 1
Instrument panel fuse box diagram: Citroen C4 (2008, 2009, 2010)

Assignment of the fuses in the Dashboard Fuse box 1 (2008, 2009, 2010)

RatingFunctions
F115 ARear screen wipe
F230 ACentral locking – Deadlocking
F35 AAirbags and pretensioners
F410 ADiagnostic socket – Brake switch – Photochromic rear view mirror – ESP – Coolant level sensor – Diesel additive – Clutch pedal switch (ESP, cruise control and speed limiter)
F530 AFront windows, Heated exterior rear view mirrors
F630 ARear windows
F75 AInterior lighting
F820 AMultifunction screen, radio, steering wheel controls, Displays – Alarm – Front 12 V socket -Trailer unit – Driving school module
F930 ALighter – Rear 12 V socket
F1015 ADeflation detection – Automatic gearbox – STOP switch
F1115 AIgnition switch – Diagnostic socket – Particle filter
F1215 AElectric seat – Lane departure warning system – Parking assistance
F135 ARain sensor – Brightness sensor – Electronic gearbox system (6-speed) – Engine relay unit
F1415 AAir conditioning – Instrument panel – Rev counter – Airbags and pretensioners – Trailer unit Bluetooth® telephone
F1530 ACentral locking – Deadlocking
F16SHUNT
F1740 AHeated rear screen
Dashboard Fuse box 2
Citroen C4 mk1 fuse box under dashboard1

Assignment of the fuses in the Dashboard Fuse box 2 (2008, 2009, 2010)

NumberRatingFunctions
F3630 AHi Fi amplifier
F3730 ADriver’s electric seat
F3920 AHeated seats
Engine compartment
Under-hood fuse box diagram: Citroen C4 (2008, 2009, 2010)

Assignment of the fuses in the Engine compartment (2008, 2009, 2010)

RatingFunctions
F120 AEngine management control unit – Cooling fan
F215 AHorn
F310 AFront and rear screen wash
F420 AHeadlamp wash
F515 AFuel pump
F610 AAutomatic gearbox – Xenon headlamps – Directional headlamps – Canister discharge electrovalve
F710 AABS control unit/ESP control unit – Power steering
F825 AStarter motor
F910 AAdditional heating unit (Diesel) – Engine coolant level switch
F1030 AEngine electrovalve – Water in diesel sensor – Engine management control unit – Injectors -Ignition coil – Oxygen sensor – Canister discharge electrovalve (1.4i 16V and 1.6i 16V engines)
F1140 AAir blower – Air conditioning
F1230 AWindscreen wipe
F1340 ABuilt-in Systems Interface (BSI)
F14Not used
F1510 ARight-hand main beam
F1610 ALeft-hand main beam
F1715 ALeft-hand dipped beam
F1815 ARight-hand dipped beam
F1915 AEngine management control unit (1.4i 16V et 1.6i 16V engines)
F2010 AEngine electrovalve
F215 ACooling fan relay – Valvetronic
Fuses on the battery
Fuses on the battery: Citroen C4 (2008, 2009, 2010)

Assignment of the fuses on the battery (2008, 2009, 2010)

RatingFunctions
F1Not used
F2*30 AGearbox (electronic system or automatic)
F3Not used
F4Not used
F5*80 APower steering electropump assembly
F6‘70 AHeating unit (Diesel)
F7*100 ASwitching and protection unit
F8Not used
F9*30 AElectronic gearbox system electropump assembly
F10*30 AValvetronic electric motor
MF1*30 A / 50 ACooling fan
MF2*30 AABS/ESP pump supply
MF3*50 AABS/ESP control unit
MF4*80 ABuilt-in systems interface
MF5*80 ABuilt-in systems interface
MF6*80 APassenger compartment fuse box
MF7*20 ADiagnostic socket/PEF additive pump
MF8*Not used
* The maxi-fuses provide additional protection for the electrical systems. All work on these fuses must be carried out by CITROËN technicians.

Conclusion

For owners and enthusiasts of classic Citroën C4 2004-2010, understanding the fuse box and relay systems is essential for vehicle maintenance. Regular inspection and maintenance of these components helped ensure the vehicle’s longevity and reliability, preserving its status as a symbol of Citroën’s craftsmanship and innovation in the automotive industry during that era.

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