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.

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.

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.