sensor CITROEN C3 2023 Owners Manual
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Contents
  ■
Overview
  ■
Driving tips
 1InstrumentsInstrument panel  5
Warning and indicator lamps  5
Indicators  7
Trip computer  7
 2AccessKey  9
Key with remote control function  9
Central locking  10
Back-up procedures  10
Doors  11
Boot  11
Windows  12
 3Ease of use and comfortFront seats  14
Steering wheel adjustment  15
Rear seats  15
Heating and Ventilation  16
Manual air conditioning  17
Front demist - defrost  18
Interior fittings  18
Front courtesy lamps  19
Boot fittings  19
 4Lighting and visibilityExterior lighting control stalk  20
Direction indicators  20
Headlamp beam height adjustment  20
Wiper control stalk  21
Changing a wiper blade  21
 5SafetyGeneral safety recommendations  23
Hazard warning lamps  23
Horn  23
Seat belts  24
Airbags  26
Child seats  28
Child lock  30
 6DrivingDriving recommendations  31
Starting / Switching off the engine  31
5-speed manual gearbox  32
6-speed manual gearbox  32
Gear efficiency indicator  33
Overspeed alert  33
Parking sensors  33
 7Practical informationRefuelling  35
Bonnet  35
Engine compartment  36
Checking levels  37
Checks  39
Advice on care and maintenance  41
 8In the event of a breakdownTool kit  42
Spare wheel  42
Changing a bulb  45
Changing a fuse  48
12
 
V battery  56
Towing the vehicle  58
 9Technical dataEngines technical data  60
Dimensions  60
Identification markings  60
 1010" Touch Screen
  ■
Alphabetical index   
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Safety
Clean the seat belt straps with soapy water or 
a textile cleaning product, sold by CITROËN 
dealers.
Airbags
General information
The airbags have been designed to optimise the 
safety of the occupants in the event of a violent 
collision.
The airbags are supplementary restraint systems 
(SRS) that help cushion the impact force to the 
head and chest during severe frontal collisions. 
The SRS includes Airbags, Seatbelts, Airbag 
ECU, Collision sensors and SRS warning lamp. 
Electronic detectors record and analyse the front 
impacts sustained in the impact detection zones:
– 
In the event of violent impact, the airbags 
deploy instantly and help better protect the 
occupants of the vehicle; immediately after the 
impact, the airbags deflate rapidly in order not 
to hinder the visibility or the possible exit of the 
occupants.
–
 
In the event of a slight impact, a rear impact 
and under certain rollover conditions, the airbags 
may not deploy; only the seat belt helps to 
protect you in these situations.
During a frontal crash, children could be fatally 
injured if they are sitting on driver
’s lap/standing 
very close to the dashboard, as the airbags exert 
severe force levels during deployment. 
The seriousness of the impact depends on the 
nature of the obstacle and the speed of the 
vehicle at the moment of collision.
The airbags do not operate when the 
ignition is switched off.
This equipment will only deploy once. If a 
second impact occurs (during the same or a 
subsequent accident), the airbag will not be 
deployed again.
When one or more airbags are deployed, 
the detonation of the pyrotechnic charge 
incorporated in the system makes a noise and 
releases a small quantity of smoke.
This smoke is not harmful, but sensitive 
individuals may experience slight irritation.
The detonation noise associated with the 
deployment of one or more airbags may result 
in a slight loss of hearing for a short time.
The airbags will deploy irrespective of  whether the seat belt is buckled or not. In 
order to reduce the risk of SERIOUS INJURY 
or DEATH, we recommend occupants to 
always be buckled. 
Front airbags 
 
This system protects the driver and front 
passenger in the event of a serious front impact, 
in order to limit the risk of head and chest 
injuries.
The driver's airbag is fitted in the centre of the 
steering wheel; the front passenger airbag is 
fitted in the dashboard above the glove box.
Deployment
1. Frontal collision Airbags may deploy during severe front 
collision when the crash intensity is above 
the threshold and the angle of impact is less 
than or equal to 30 degrees with respect to 
longitudinal axis of vehicle.
2. Collision with utility poles or trees Airbags may deploy when the vehicle hits 
pole or tree with sufficient intensity to trigger 
the airbag. The crash intensity should be 
above the threshold to inflate the airbag.
3. Underride collision Airbags may deploy when the vehicle rides 
under the trucks or vehicles with higher 
ground clearance. The crash intensity should 
be above the threshold to inflate the airbag.     
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Driving
6Only engage reverse gear when the 
vehicle is stationary with the engine at 
idle.
As a safety precaution and to facilitate  starting the engine:
–
 
Always select neutral.
–
 
Press the clutch pedal.
Gear efficiency indicator
This system helps reduce fuel consumption by 
recommending the most appropriate gear.
Operation
The system advises to change gear.The information appears in the instrument  panel in the form of an ascending or 
descending arrow.
The number displayed is the current gear.
Gear shift recommendations should not be 
considered compulsory. In fact, the road layout, 
the traffic density and safety remain the deciding 
factors when choosing the best gear. The driver 
therefore remains responsible for deciding 
whether or not to follow the indications issued by 
the system.
This function cannot be deactivated.
The system adapts its gear shift  recommendation according to the driving 
conditions (slope, load, etc.) and the driver’s 
requirements (power, acceleration, braking, 
etc.).
The system never suggests:
–
 
engaging first gear;
–
 
engaging reverse.
Overspeed alert
An audible overspeed alert is triggered when the 
vehicle exceeds predefined speed thresholds.
When the vehicle speed is greater than 80 km/h, 
the alert is emitted every 2 minutes.
When the vehicle speed is greater than 120 
km/h, the alert is emitted every 2 seconds.
This system cannot be modified nor deactivated.
Parking sensors 
 
Using sensors located in the bumper, this 
system signals the proximity of obstacles 
(e.g.
  pedestrian, vehicle, tree, barrier) present in 
their field of detection.
Rear parking sensors
The system is switched on by engaging reverse 
gear.
The system is switched off when disengaging 
reverse gear.
Audible assistance 
 
The system signals the presence of obstacles 
within the sensors’ detection zone.
The proximity information is given by an 
intermittent audible signal, the frequency of 
which increases as the vehicle approaches the 
obstacle.
When the distance between the vehicle 
and the obstacle becomes less than about 
60
  centimetres, the audible signal becomes 
continuous.
Operating limits
If the boot is heavily loaded, the vehicle may tilt, 
affecting distance measurements.   
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Practical information
7Timing and accessory kits
Timing and accessory kits are used from 
the time the engine is started until it is 
switched off. It is normal for them to wear over 
time.
A
 faulty timing or accessory kit can damage 
the engine, rendering it unusable. Observe the 
recommended replacement frequency, stated in 
distance travelled or time elapsed, whichever is 
reached first. 
Advice on care and  maintenance
General recommendations
Observe the following recommendations to avoid 
damaging the vehicle.
Exterior
Never use a high-pressure jet wash in 
the engine compartment - risk of 
damaging the electrical components!
Do not wash the vehicle in bright sunshine or 
extremely cold conditions.
When washing the vehicle in an 
automatic roller-brush car wash, be sure 
to lock the doors.
When using a pressure washer, hold the 
lance at least 30 cm from the vehicle 
(particularly when cleaning areas containing 
chipped paint, sensors or seals).
Promptly clean up any stains containing 
chemicals liable to damage the vehicle's paint 
(including tree resin, bird droppings, insect 
secretions, pollen and tar).
If justified by the environment, clean the 
vehicle more frequently to remove salty 
deposits (in coastal areas), soot (in industrial 
areas) and mud (in wet or cold areas). These 
substances can be highly corrosive.
Contact a CITROËN dealer for advice on 
removing stubborn stains requiring special 
products (such as tar or insect removers).
Preferably, have paint touch-ups performed 
by a CITROËN dealer.
The versions provided with roof rails are  not designed for fitting roof racks. It is 
only for aesthetic factor. 
Do not apply loads on the roof rails. 
Interior
When washing the vehicle, never use a 
water hose or high-pressure jet to clean 
the interior.
Liquids carried in cups or other open 
containers can spill, presenting a risk of 
damage if they come into contact with the 
controls in the dashboard and centre console. 
Be vigilant!
Bodywork
High-gloss paint
Do not use abrasive products, solvents, 
petrol or oil to clean the bodywork.
Never use an abrasive sponge to clean 
stubborn stains - risk of scratching the 
paintwork!
Do not apply polish in strong sunshine, or to 
plastic or rubber parts.
Use a soft cloth and soapy water or a pH 
neutral product.
Gently wipe the bodywork with a clean 
microfibre cloth.
Apply polish with the vehicle clean and dry.
Comply with the instructions for use stated on 
the product.    
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In the event of a breakdown
8Relays
RelayColourRating (A) Functions
MICRO Brown 20Ignition Loads
Engine compartment fuses
The fusebox is placed in the engine 
compartment near the battery.
Access to the fuses 
 
► Remove the  cover.
►  Change the fuse.
►
 
When you have finished, close the cover 
carefully then engage the two latches, to ensure 
correct sealing of the fusebox.
Version 1
Engine fuse cum relay box
Fuse No. ColourRating (A) Functions
FF01 Green 30ABS ECU
FF02 Red 10HVAC Compressor
FF03 Red 10Horn
FF04 Green 30ECM Loads (Ignition Coil / Injectors / Fuel Pump)
FF05 Blue 15ECM Loads (Canister Valve / O2 Sensors)
FF06 Ta n 5ECM Loads (VVT Valve)    
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In the event of a breakdown
8Fuse No.ColourRating (A) Functions
FF03 Red 10Horn
FF04 Green 30ECM Loads (Ignition Coil
  / Injectors   / Fuel Pump)
FF05 Blue 15ECM Loads (Canister Valve
  / O2 Sensors)
FF06 Ta n 5ECM Loads (VVT Valve)
FF07 Yellow 20ECM Power Supply
FF08 Ta n 5Radiator Fan Relay Coil Supply
FS01 Black 80Cabin Fuse Box Loads (CFB-1)
FS02 Yellow 60Electric Power Steering (EPS) Motor
FS03 Green 40ABS Motor
FS04 Green 40Radiator Fan
FS05 Green 40Accessory Load (HVAC Blower/Washer)
FF Green 30Service
FF Blue 15Service
FF Red 10Service
Relay ColourRating (A) Functions
MICRO Brown 20HVAC Compressor
MICRO Brown 20Horn
MICRO Brown 20Starter Solenoid
MICRO Grey 35ECM Main    
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In the event of a breakdown
Engine fuse cum relay box turbo
Fuse No.ColourRating (A) Functions
FF01 Green 30ABS ECU
FF02 Red 10HVAC Compressor
FF03 Red 10Horn
FF04 Green 30ECM Loads (Ignition Coil
  / Fuel Pump)
FF05 Blue 15ECM Loads (Canister Valve
  / O2 Sensors)
FF06 Blue 15ECM Loads (VVT
 
/ Thermostat   / Oil Pump Valve)
FF07 Yellow 20ECM Power Supply & Injectors
FF08 Ta n 5Radiator Fan Relay Coil Supply
FS01 Black 80Cabin Fuse Box Loads (CFB-1)
FS02 Yellow 60Electric Power Steering (EPS) Motor
FS03 Green 40ABS Motor
FS04 Yellow 60Radiator Fan
FS05 Green 40Accessory Load (HVAC Blower/Washer)
FF Green 30Service
FF Blue 15Service
FF Red 10Service
Relay ColourRating (A) Functions
MICRO Brown 20HVAC Compressor
MICRO Brown 20Horn
MICRO Brown 20Starter Solenoid
MICRO Grey 35ECM Main    
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In the event of a breakdown
8Engine relay box
Version 1
Fuse No.ColourRating (A) Functions
FS06 Green 40Cabin Fuse Box Loads (CFB-2)
Relay ColourRating (A) Functions
MINI Grey 40Radiator Fan
MINI Grey 40Accessory load (HVAC Blower/Wiper/Washer)
MAXI Grey 70ECM Power
Version 2
Fuse No. ColourRating (A) Functions
FS06 Green 40Cabin Fuse Box Loads (CFB-2)
Relay ColourRating (A) Functions
MINI Grey 40Radiator Fan
MINI Grey 40Accessory load (HVAC Blower/Washer)
MAXI Grey 70ECM Power
Engine relay box turbo
Fuse No. ColourRating (A) Functions
FS06 Green 40Cabin Fuse Box Loads (CFB-2)
FF09 Blue 15ECM Loads (Electric Dump Valve
  / Blow-by Heater)
FF10 Ta n 5Battery Sensor (BECB)
FF11 Black 1ECM Main Relay Coil Control (Diode)    
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In the event of a breakdown
8at least equal to that of the discharged 
battery.
The two vehicles must not be in contact with 
each other.
Switch off all electricity-consuming equipment 
on both vehicles (audio system, wipers, 
lighting, etc.).
Make sure that the jump leads are well away 
from the engine’s moving parts (fan, belt, 
etc.).
Do not disconnect the (+) terminal while the 
engine is running.
During jump start, extra care should be taken 
to ensure right terminals are connected. If 
terminal connections are reversed, it will 
lead to failure of alternator & other electrical, 
electronic components. 
Never power electrical or electronic 
components directly from battery terminals 
as it will lead to poor battery charging, poor 
performance of components and battery 
sensor malfunction, which will impact fuel 
economy. For Naturally Aspirated engine version 
 
► Lift the cover on the (+) terminal, if the vehicle 
has one.
► 
Connect the red cable to the (+) terminal 
of flat battery
  A, then to the (+) terminal of the 
backup battery
  B or of the booster.
►
 
Connect one end of the green or black cable 
to the (-) terminal of the backup battery
  B or of 
the booster (or to an earth point on the assisting 
vehicle).
►
 
Connect the other end of the green or black 
cable to the (-) terminal of flat battery
  A.
►
 
Start the engine on the assisting vehicle and 
leave it running for a few minutes.
►
 
Operate the starter on the broken down 
vehicle and let the engine run.
If the engine does not start immediately
, switch 
off the ignition and wait a few moments before 
trying again.
►
 
W
 ait for it to return to idle.
►
 
Disconnect the jump leads  in reverse order: 
first remove (-) terminal then (+) terminal.
► Refit the cover to the (+) terminal, if the 
vehicle has one.
►
 
Allow the engine to run for at least 
30
  minutes, with the vehicle stationary, so that 
the battery reaches an adequate state of charge.
For Turbo engine version 
 
The negative cable must be connected to  the car ground (not to the battery 
negative terminal) so that the battery sensor 
can detect all charging and discharging 
currents.
►
 
Lift 
 the cover on the (+) terminal, if the vehicle 
has one.
►
 
Connect the red cable to the (+) terminal of 
flat battery
  A (at the metal elbow), then to the 
(+) terminal of the backup battery
  B or of the 
booster.
►
 
Connect one end of the green or black cable 
to the (-) terminal of the backup battery
  B or of     
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Alphabetical index
P
Pads, brake    40
Paint     
41
Parking sensors, audible and visual
    
33
Parking sensors, rear
    
33
Plates, identification
    
60
Port, USB
    
18
Pressures, tyres
    
40, 61
Pre-tensioning (seat belts)
    
25
Protecting children
    
26–28
Puncture
    
42
R
Recirculation, air     18
Reminder, lighting on     
20
Remote control
    
9–10
Removing a wheel
    
43–44
Replacing bulbs
    
45–47
Replacing fuses
    
48
Replacing the air filter
    
40
Replacing the oil filter
    
40
Replacing the passenger compartment  
filter
    
40
Reservoir, screenwash
    
38
Reversing lamps
    
47
Roof rack
    
41
S
Safety, children    26–28
Screenwash     
21
Screenwash, front
    
21
Seat belts
    
24–25
Seats, front
    
14
Seats, rear
    
15–16
Serial number, vehicle
    
60
Servicing
    
7, 39, 40–41
Sidelamps
    
47
Starting the engine
    
31
Starting the vehicle
    
31–32
Starting using another battery
    
56
Stay, engine bonnet
    
36
Steering wheel (adjustment)
    
15
Stopping the vehicle
    
31–32
Storage
    
18
Suspension
    
40
Switch, ignition
    
31
Switching off the engine
    
31
T
Tables of engines     60
Tables of fuses     
48, 51
Tank, fuel
    
35
Technical data
    
60
Temperature, coolant
    
7
Tools
    
42
Towing
    
58–59
Trip computer    7–8
Tyres     
40, 61
U
Unlocking     9
Unlocking from the inside     
10
Unlocking the doors
    
10
V
Ventilation     16
W
Warning and indicator lamps     5
Warning lamp, driver's seat belt not  
fastened
    
25
Warning lamps
    
5
Warning lamp, seat belts
    
25
Warnings and indicators
    
5
Washing (advice)
    
41
Wheel, spare
    
40, 42–44
Wipers
    
21
Wipers, windscreen
    
21