DS3 (2017-2020) – fuse and relay box
Diagrams of fuse and relay boxes – DS3
Applies to vehicles manufactured in the years:
2017, 2018, 2019, 2020.
The cigarette lighter (sockets) on the DS3 is provided by fuse F9 in the instrument panel fuse box.
Dashboard fuse box
Left-hand drive vehicles:
The fuse box is located on the bottom of the dashboard (left-hand side).
Unclip the cover by pulling it from the side, remove the cover completely.
Right-hand drive vehicles:
The fuse box is located in the glove compartment.
Open the glove box cover, unfasten the fuse box cover by pulling the side, remove the cover completely.
| Number | Amperes [A] | Description |
|---|---|---|
| F1 | 15 A. | Rear wiper. |
| F2 | – | Not used. |
| F3 | 5 A. | Control unit for airbags and seatbelt tensioners |
| F4 | 10 A. | Air conditioning;
Clutch switch; Electrochromic mirror; Diesel Particulate Filter Pump; Diagnostic socket; Air flow sensor (Diesel). |
| F5 | 30 A. | Power window panel;
Electric passenger window control; Electric windshield motor. |
| F6 | 30 A. | Electric driver’s window motor. |
| F7 | 5 A. | Ceiling lamp, glove box lighting |
| F8 | 20 A. | Multifunction screen;
Audio system; Navigation radio; Alarm switchboard; Alarm siren. |
| F9 | 30 A. | 12V socket;
Portable power to assist with navigation. |
| F10 | 15 A. | Steering wheel controls. |
| F11 | 15 A. | Ignition;
Diagnostic socket; Automatic gearbox control unit. |
| F12 | 15 A. | Rain and sun sensor;
Trailer relay. |
| F13 | 5 A. | Main switch;
Engine relay assembly. |
| F14 | 15 A. | Parking sensor controller;
Airbag controller; Instrument panel; Digital air conditioning; USB box; Hi-Fi amplifier. |
| F15 | 30 A. | Central lock. |
| F 16 | – | Not used. |
| F17 | 40 A. | Evaporation and defrosting of the rear window and side mirrors. |
| CII | – | PARC shunt. |
| FH36 | 5 A. | Trailer relay. |
| FH37 | – | Not used. |
| FH38 | 20 A. | Hi-fi amplifier. |
| FH39 | 20 A. | Heated seats |
| FH40 | 40 A. | Trailer relay. |
Fuse box in the engine compartment
It is located in the engine compartment near the battery (left side).
| Number | Amperes [A] | Description |
|---|---|---|
| F1 | 20 A. | Engine control unit power supply;
Cooling fan assembly control relay; Multifunctional main engine control relay; Injection pump (Diesel). |
| F2 | 15 A. | Horn. |
| F3 | 10 A. | Washer fluid, front and rear. |
| F4 | 20 A. | LED lamps. |
| F5 | 15 A. | Diesel heater (Diesel);
Particulate filter additive pump (Diesel); Air Flow Sensor (Diesel); Purge heater; Solenoid valves (VTi). |
| F6 | 10 A. | ABS / DSC control unit;
Secondary stop switch. |
| F7 | 10 A. | Electric power steering;
Automatic Transmission. |
| F8 | 25 A. | Starter control. |
| F9 | 10 A. | Changeover and protection unit (Diesel). |
| F10 | 30 A. | Fuel heater (diesel);
Purge Heater (Diesel); Fuel pump (VTi); Injectors; Ignition coils (gasoline). |
| F11 | 40 A. | Heater blower. |
| F12 | 30 A. | Windscreen wipers slow / fast. |
| F13 | 40 A. | Embedded system interface power supply (positive ignition). |
| F14 | 30 A. | Valvetronic (VTi) power supply. |
| F15 | 10 A. | Right high beam headlamps. |
| F 16 | 10 A. | Left high beam. |
| F17 | 15 A. | Left dipped beam. |
| F18 | 15 A. | Right-hand dipped headlamps. |
| F19 | 15 A. | Oxygen sensors and solenoid valves (VTi);
Solenoid valves (diesel); EGR (Diesel) solenoid. |
| F20 | 10 A. | Pumps;
Electronic thermostat (VTi); Timing solenoid valve (THP); Water in fuel (diesel) sensor. |
| F21 | 5 A. | Power supply to control the fan assembly;
ABS / DSC; Turbo pump (THP). |
| MF1 * | 60 A. | Fan assembly. |
| MF2 * | 30 A. | ABS / DSC pump. |
| MF3 * | 30 A. | ABS / DSC solenoid valves. |
| MF4 * | 60 A. | Power for the embedded system interface (BSI). |
| MF5 * | 60 A. | Power for the embedded system interface (BSI). |
| MF6 * | 30 A. | Additional cooling fan (THP). |
| MF7 * | 80 A. | Dashboard fuse box. |
| MF8 * | – | Not used. |
| * Maxi fuses provide additional protection for electrical installations. All work on maxi fuses must be carried out by a CITROËN dealer or a specialist workshop. |