2021 CITROEN C3 AIRCROSS brake fluid

9
Instruments
1If a warning lamp remains lit
The references (1), (2) and (3) in the warning
and indicator lamp description indicate whether
you should contact a qualified professional in
addition to the immediate recommended actions.
(1): You must stop the vehicle.
Stop as soon as it is safe to do so and switch off
the ignition.
(2): Contact a CITROËN dealer or a qualified
workshop.
(3): Visit a CITROËN dealer or a qualified
workshop.
List of warning and
indicator lamps
Red warning/indicator lamps
STOP
Fixed, associated with another warning lamp, accompanied by the display of a
message and an audible signal.
A serious fault with the engine, braking system,
power steering or a major electrical fault has
been detected.
Carry out (1) and then (2).
Parking brakeFixed.The parking brake is applied or not
properly released.
BrakingFixed.The brake fluid level in the braking circuit
has dropped significantly.
Carry out (1), then top up with fluid that complies
with the manufacturer's recommendations. If the
problem persists, carry out (2).
Fixed.The electronic brake force distribution (EBFD) system is faulty.Carry out (1) and then (2).
Door(s) openFixed, associated with a message identifying the access.
A door or the tailgate is not properly closed
(speed less than 6 mph (10 km/h)).
Fixed, associated with a message identifying the access, accompanied by
an audible signal.
A door or the tailgate is not properly closed
(speed above 6 mph (10 km/h)).
Seat belts not fastened / unfastened
Fixed or flashing, accompanied by an increasing audible signal.
A seat belt has not been fastened or has been
unfastened.
12 V battery chargeFixed.
The battery charging circuit has a fault
(dirty terminals, slack or cut alternator belt, etc.). Clean and retighten the terminals. If the warning
lamp does not go off when the engine is started,
carry out (2).
Engine oil pressureFixed.There is a fault with the engine lubrication
system.
Carry out (1) and then (2).
Maximum engine coolant temperatureFixed.The temperature of the cooling system is
too high.
Carry out (1), then wait until the engine has
cooled down before topping up the level, if
necessary. If the problem persists, carry out (2).
Engine self-diagnostics systemFixed.A major engine fault has been
detected.
Carry out (1) and then (2).
Orange warning/indicator lamps
Engine self-diagnostics system
Fixed.A minor engine fault has been
detected.
Carry out (3).
Flashing.The engine management system has a
fault.
There is a risk that the catalytic converter will be
destroyed.

131
Practical information
7► Clip the stay in its housing.► Lower the bonnet and release it near the end of its travel.► Pull on the bonnet to check that it is locked correctly.
Because of the presence of electrical
equipment under the bonnet, it is strongly
recommended that exposure to water (rain,
washing, etc.) be limited.
Engine compartment
The engine represented is an example given for
illustration purposes only.
The locations of the following elements may
vary:
– Air filter.– Engine oil dipstick.– Engine oil filler cap.– Priming pump.
* Depending on engine.
Petrol engine

Diesel engine

1. Screenwash fluid reservoir
2. Engine coolant reservoir
3. Brake fluid reservoir
4. Battery
5. Remote earth point (-)
6. Fusebox
7. Air filter
8. Engine oil filler cap
9.Engine oil dipstick
10. Priming pump *
The Diesel fuel system operates under
very high pressure.
All work on this circuit must be carried out
only by a CITROËN dealer or a qualified
workshop.
Checking levels
Check all of the following levels regularly in
accordance with the manufacturer's service
schedule. Top them up if required, unless
otherwise indicated.
If a level drops significantly, have the
corresponding system checked by a CITROËN
dealer or a qualified workshop.
The fluids must comply with the manufacturer's requirements and with
the vehicle's engine.
Take care when working under the bonnet, as certain areas of the engine
may be extremely hot (risk of burns) and the
cooling fan could start at any time (even with
the ignition off).

132
Practical information
Used products
Avoid prolonged contact of used oil or fluids with the skin.
Most of these fluids are harmful to health and
very corrosive.
Do not discard used oil or fluids into sewers or onto the ground.
Empty used oil into the containers reserved
for this purpose at a CITROËN dealer or a
qualified workshop.
Engine oil
The level is checked, with the engine having been switched off for at least 30
minutes and on level ground, either using the oil
level indicator in the instrument panel when the
ignition is switched on (for vehicles equipped
with an electric gauge), or using the dipstick.
It is normal to top up the oil level between two
services (or oil changes). It is recommended
that you check the level, and top up if necessary,
every 3,000 miles (5,000 km).
In order to maintain the reliability of the
engine and emissions control system,
never use additives in the engine oil.
Checking using the dipstick
For the location of the dipstick, please refer
to the illustration of the corresponding engine
compartment.
► Grasp the dipstick by its coloured grip and pull it out completely.► Wipe the end of the dipstick using a clean, lint-free cloth.

► Reinsert the dipstick and push fully down, then pull it out again to visually check the oil
level: the correct level is between marks A (max) and B (min).
Do not start the engine if the level is:
– above mark A: contact a CITROËN dealer or a
qualified workshop.
– below mark B: top up the engine oil
immediately.
Oil grade
Before topping up or changing the engine
oil, check that the oil is suitable for the engine
and complies with the recommendations in
the service schedule supplied with the vehicle
(or available from your CITROËN dealer and
qualified workshops).
Use of non-recommended oil may invalidate
the contractual warranty in the event of
engine failure.
Topping up the engine oil level
The location of the oil filler cap is shown in the
corresponding underbonnet layout view.
► Add oil in small quantities, avoiding any spills on engine components (risk of fire).► Wait a few minutes before checking the level again using the dipstick.► Add more oil if necessary .► After checking the level, carefully refit the oil filler cap and the dipstick in its tube.
During the 30 minutes after topping up
the oil, the check performed with the oil
level indicator in the instrument panel when
the ignition is switched on is not valid.
Brake fluid
The level of this fluid should be close to
the "MAX" mark. If not, check the brake
pad wear.
To know how often the brake fluid should be
replaced, refer to the manufacturer's servicing
schedule.
Clean the cap before removing it to refill.
Use only DOT4 brake fluid from a sealed
container.
Engine coolant
It is normal to top up this fluid between two services.
The check and top-up must only be done with
the engine cold.
A low level presents a risk of serious damage to
the engine.
The level of this fluid should be close to the
"MAX" mark but should never exceed it.
If the level is close to or below the " MIN” mark, it
is essential to top up.
When the engine is hot, the temperature of this
fluid is regulated by the fan.
As the cooling system is pressurised, wait at
least one hour after switching off the engine
before carrying out any work.
In order to avoid the risk of scalding if you need
to top up in an emergency, wrap a cloth around
the cap and unscrew the cap by two turns to
allow the pressure to drop.
Once the pressure has dropped, remove the cap
and top up to the required level.
Cooling of the engine when stopped
The engine cooling fan may start after
the engine has been switched off.
Take care with objects or clothing that
could be caught in the blades of the fan!
Screenwash fluid
Top up to the required level when necessary.

134
Practical information
For more information on the precautions
to take before any work on the 12 V battery, refer to the corresponding section.
Versions equipped with Stop & Start are fitted with a 12 V lead-acid battery of specific technology and specification.
Its replacement should be carried out only by
a CITROËN dealer or a qualified workshop.
Passenger compartment
filter
Depending on the environment and the use of the vehicle (e.g. dusty atmosphere,
city driving), change it twice as often, if
necessary .
A clogged passenger compartment filter
can adversely affect air conditioning
system performance and generate
undesirable odours.
Air filter
Depending on the environment and the use of the vehicle (e.g. dusty atmosphere,
city driving), change it twice as often, if
necessary .
Oil filter
Change the oil filter each time the engine oil is changed.
Particle filter (Diesel)
When the particle filter is approaching saturation, this warning lamp comes on
temporarily, accompanied by a message warning
of the risk of filter clogging.
As soon as the traffic conditions permit,
regenerate the filter by driving at a speed of at
least 37 mph (60 km/h) until the warning lamp goes off.
If the warning lamp stays on, this
indicates a low Diesel additive level.
For more information on Checking levels,
refer to the corresponding section.
Following prolonged operation of the
vehicle at very low speed or at idle, you
may, in exceptional circumstances, notice the
emission of water vapour at the exhaust while
accelerating. This has no impact on the
vehicle’s behaviour or the environment.
New vehicle
During the first few particle filter
regeneration operations, you may notice a
"burning" smell. This is perfectly normal.
Manual gearbox
The gearbox does not require any maintenance (no oil change).
Automatic gearbox
The gearbox does not require any maintenance (no oil change).
Brake pads
Brake wear depends on the style of driving, particularly in the case of vehicles
used in town, over short distances. It may be
necessary to have the condition of the brakes
checked, even between vehicle services.
Unless there is a leak in the circuit, a drop in the
brake fluid level indicates that the brake pads
are worn.
After washing the vehicle, moisture, or in wintry conditions, ice can form on the
brake discs and pads: braking efficiency may
be reduced. Gently dab the brakes to dry and
defrost them.
Brake disc wear
For information on checking brake disc
wear, contact a CITROËN dealer or a
qualified workshop.
Manual parking brake
If you notice excessive brake lever travel or decreased effectiveness, the parking
brake must be adjusted, even between two
services.
This system must be checked by a CITROËN
dealer or a qualified workshop.
Wheels and tyres
The inflation pressure of all tyres, including the spare wheel, must be
checked on "cold” tyres.
The pressures indicated on the tyre pressure
label are valid for "cold" tyres. If you have driven
for more than 10 minutes or more than 6 miles
(10 kilometres) at over 31 mph (50 km/h), add 0.3 bar (30 kPa) to the values indicated on the
label.
Under-inflation increases fuel
consumption. Non-compliant tyre
pressure causes premature wear on tyres and
has an adverse effect on the vehicle's road
holding - risk of an accident!
Driving with worn or damaged tyres reduces the
braking and road holding performance of the
vehicle. It is recommended to regularly check the
condition of the tyres (tread and sidewalls) and
wheel rims as well as the presence of the valves.
When the wear indicators no longer appear set
back from the tread, the depth of the grooves is
less than 1.6 mm; it is imperative to replace the
tyres.
Using different size wheels and tyres from those
specified can affect the lifetime of tyres, wheel
rotation, ground clearance, the speedometer
reading and have an adverse effect on road
holding.
Fitting different tyres on the front and rear axles
can cause the ESC to mistime.

216
Alphabetical index
Fittings, boot 51Fittings, interior 47–48, 50Fittings, rear 50Flap, fuel filler 123–124Flashing indicators 56, 147Floor, boot, adjustable 52Fluid, brake 132Fluid, engine coolant 133Foglamp, rear 55
Foglamps, front 55, 59–60, 147–148Foglamps, rear 55Folding the rear seats 38–40Frequency (radio) 203Fuel 6, 123Fuel consumption 6Fuel tank 123–124Fusebox, dashboard 150, 152Fusebox, engine compartment 150, 152Fuses 150–152
G
Gauge, fuel 123–124Gearbox, automatic 92, 94–96, 134Gearbox, manual 91–92, 95–96, 134Gear lever, manual gearbox 91–92Gear shift indicator ~ Gear efficiency indicator 94Glove box 48G.P.S. 197Grab handles 50
Grip control 68
H
Hazard warning lamps 64headlamp adjustment 59Headlamp adjustment 59Headlamps, automatic dipping 58–59
Headlamps, automatic illumination 57–58Headlamps, dipped beam 55, 147–148Headlamps, halogen 147Headlamps, main beam 55, 147–148Head restraints, front 36Head restraints, rear 38–40Head-up display 99–101Heating 42–44Hill Assist Descent 69Hill Assist Descent Control (HADC) 69–70Hill Descent Control 69–70Hill start assist 94–95Hooks 52Horn 65
I
Ignition 45, 90, 207Ignition on 90Ignition switch 87–88Immobiliser, electronic 87Indicator, AdBlue® range 14
Indicator, coolant temperature 13Indicator, engine oil level 14Indicators, direction 56Inflating tyres 135, 163Inflating tyres and accessories (using the kit) 140, 142Infrared camera 99Instrument panel 7–8, 99Instrument panel, matrix 7
Instrument panels 7Internet browser 199ISOFIX mountings 80
J
Jack 140, 143, 204Jump starting 153
K
Key 23–27Key, electronic 24–26Keyless Entry and Starting 24–26, 87, 89Key not recognised 90Key with remote control 87Kit, hands-free 170–171, 184–185, 205–206Kit, puncture repair 140Kit, temporary puncture repair 139–142

217
Alphabetical index
L
Labels, identification 162Lamp, boot 54, 149Lamps, parking 56Lamps, rear 148Lane Departure Warning System (LDWS) 112–113LEDs - Light-emitting diodes 57, 147
Level, AdBlue® 133Level, brake fluid 132Level, Diesel additive 133–134Level, engine coolant 13, 133Level, engine oil 14, 132Levels and checks 131–133Level, screenwash fluid 61, 133Light-emitting diodes - LEDs 57, 147Lighting, cornering 60Lighting, directional 59Lighting, exterior 55Lighting, guide-me home 57Lighting, interior 53Lighting, mood 53Lighting, welcome 58Load reduction mode 128Locating your vehicle 24Locking 24, 26Locking from the inside 30Locking the doors 30Low fuel level 123–124
M
Maintenance (advice) 137Maintenance, routine 99, 133Manoeuvring aids (recommendations) 98Map reading lamps 53Markings, identification 162Mat 50, 99Memorising a speed 101
Menu 183Menu, main 165Menus (audio) 178–179, 192–193Messages 207Messages, quick 208Mirror, rear view 42Mirrors, door 41–42, 113Misfuel prevention 124Mountings, ISOFIX 80MP3 CD 169
N
Net, storage 50
O
Obstacle detection 114Oil change 132Oil consumption 132OIl, engine 132
On-board tools 53, 139–140Opening the bonnet 130Opening the boot 24–25, 29Opening the doors 24–25, 29
P
Pads, brake 134
Paint 138, 162Paint colour code 162Parcel shelf, rear 51Park Assist 118Parking brake 91, 134Parking sensors, audible and visual 114Parking sensors, front 11 5Parking sensors, rear 11 5Plates, identification 162Player, Apple® 170, 182, 205Player, MP3 CD 169, 204Player, USB 168, 181, 204Port, USB 49, 168, 181, 204Pressures, tyres 135, 143, 163Pre-tensioning seat belts 72Priming pump 139Priming the fuel system 139Profiles 186, 209Protecting children 74–81, 83Puncture 140–141, 143