Learn about Citroën C8 2002-2008 fuse box and relay’s locations, functions, and maintenance tips for optimal vehicle electrical system.
The Citroën C8 (2002-2008) is a large multi-purpose vehicle (MPV) that was popular for its spacious interior and versatility, offered in different body styles to suit family and business needs. Known for its sliding doors and a roomy cabin, the C8 provides ample space for passengers and luggage. The MPV’s electrical system is vital for powering features like automatic sliding doors, climate control, and lighting, all of which are supported by the car’s fuse box and relays. The fuse box, located under the dashboard and in the engine compartment, houses essential fuses for these systems, ensuring safe and efficient operation. Regular maintenance of the fuse box and relays is key to avoiding electrical faults in this model.
MUST READ: DYI – How to Check Car Fuses?
(2002-2008) Citroën C8 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 C8 2002-2008 fuse assignment
- Cigar lighter (power outlet) fuses in the Citroen C8 are the fuse F9 (Cigar lighter) in the Instrument panel fuse box, and fuses F11 (3rd row 12V accessory socket) and F12 (2nd row 12V accessory socket) on the battery.
Year of production: from 2002, 2003, 2004, 2005, 2006, 2007, 2008
Dashboard fuse box
Fuse box location
Left-hand drive vehicles:
Open the lower glove box on the right-hand side, pull the handle to open the cover.
Right-hand drive vehicles:
Unscrew the bolt a quater of a turn with a coin, then, pull the handle to open the cover.
Fuse box diagram
Assignment of the fuses in the Dashboard Fuse box
| Ref. | Rating | Functions |
|---|---|---|
| F1 | 15 A | Rear wipe |
| F3 | 5 A | Airbag |
| F4 | 10 A | Steering angle sensor – ESP – Photochromic interior rear view mirror – Diagnostic socket – Clutch – Air conditioning – Suspension – Particle filter |
| F5 | 30 A | Sun roof – Front window |
| F6 | 30 A | Rear window |
| F7 | 5 A | Interior lamps – Vanity mirrors – Glovebox |
| F8 | 20 A | Displays – Alarm – Radio – CD changer – Diesel fuel additive system – Deflation detection – Sliding side door |
| F9 | 30 A | Cigar lighter |
| F10 | 15 A | Trailer relay unit – Controls at the steering wheel |
| F11 | 15 A | Diagnostic socket – Siren – Automatic gearbox – Ignition |
| F12 | 15 A | Seat belts warning lamp – Sliding doors – Airbag – Parking assistance – Driver’s seat memorisation – Passenger’s electric seat – Hands-free kit. |
| F13 | 5 A | Trailer relay unit |
| F14 | 15 A | Rain sensor – Sun roof – Air conditioning – Odometer warning lamp control unit -Instrument panel – Telematics |
| F15 | 30 A | Locking – Deadlocking – Child safety |
| F17 | 40 A | Heated rear screen |
Engine compartment fuse box
Fuse box location
To open the engine compartment fusebox, unclip the screen wash fluid reservoir then detach the cover.
Fuse box diagram
Assignment of the fuses in the Engine compartment
| Ref. | Rating | Functions |
|---|---|---|
| F1 | 20 A | Engine ECU – Exhaust Gas Recycling electrovalve – Diesel fuel high pressure regulation electrovalve – EGR electrovalve |
| F2 | 15 A | Horn |
| F3 | 10 A | Windscreen/rear screen wash pump |
| F4 | 20 A | Headlamp wash pump |
| F5 | 15 A | Fuel pump – Regulation electrovalve |
| F6 | 10 A | Gearbox – Power steering – Air flowmeter – Preheater unit – Engine oil level -Brakes – Headlamps adjustment |
| F7 | 10 A | ESP |
| F8 | 20 A | Starter motor |
| F9 | 10 A | Engine ECU |
| F10 | 30 A | Electrovalves – Oxygen sensor – Injectors – Ignition coil – ECU -Diesel fuel heater |
| F11 | 40 A | Air flow |
| F12 | 30 A | Windscreen wipe |
| F13 | 40 A | Built-in Systems Interface (lgnition+) |
| F14 | – | Free |
Fuses on the battery
Fuse box location
Pull back the floor mat, unclip the cover, located under the floor beneath the front right hand seat, to gain access.
Fuse box diagram
Assignment of the fuses on the battery
| Ref. | Rating | Functions |
|---|---|---|
| F1 | – | Free |
| F2 | – | Free |
| F3 | 5 A | Brakes |
| F4 | 25 A | Driver’s seat memorisation |
| F5 | 25 A | Passenger’s seat memorisation – Sun roof |
| F6 | 20 A | Sun roof |
| F7 | 20 A | Sun roof |
| F8 | 10 A | Passenger’s heated seat |
| F9 | 10 A | Driver’s heated seat |
| F10 | 15 A | Signalling |
| F11 | 20 A | 3rd row 12V accessory socket |
| F12 | 20 A | 2nd row 12V accessory socket |
Conclusion
For owners and enthusiasts of classic Citroën C8 2002-2008, 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.
