maintenance CITROEN C3 AIRCROSS 2021 Handbook (in English)

133
Practical information
7Engine 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.
Fluid specification
The fluid must be topped up with a ready-to-use
mixture.
In winter (temperatures below zero), a liquid
containing an agent to prevent freezing must
be used which is appropriate for the prevailing
conditions, in order to protect the elements of the
system (pump, tank, ducts, jets, etc.).
Filling with pure water is prohibited under
all circumstances (risk of freezing,
limestone deposits, etc.).
Diesel fuel additive (Diesel
with particle filter)
On reaching the minimum level in the particle filter additive tank, this warning
lamp comes on fixed, accompanied by an
audible warning and a message warning that the
additive level is too low.
Topping up
This additive must be topped up without delay by
a CITROËN dealer or a qualified workshop.
AdBlue (BlueHDi)
An alert is triggered when the reserve level is
reached.
For more information on the AdBlue range
indicators, refer to the corresponding section.
To avoid the vehicle being immobilised in
accordance with regulations, you must top up the
AdBlue tank.
For more information on the Supply of AdBlue,
refer to the corresponding section.
Checks
Unless otherwise indicated, check these
components in accordance with the
manufacturer's service schedule and according
to your engine.
Otherwise, have them checked by a CITROËN
dealer or a qualified workshop.
Only use products recommended by
CITROËN or products of equivalent
quality and specification.
In order to optimise the operation of
components as important as those in the
braking system, CITROËN selects and offers
very specific products.
12 V battery
The battery does not require any maintenance.
However, check regularly that the terminals
are correctly tightened (versions without quick
release terminals) and that the connections are
clean.

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.

137
Practical information
7► Switch off the ignition and remove the key from the switch to switch off the engine.
or
► With Keyless Entry and Starting, press the "START/STOP" button to switch off the engine.

► With the vehicle unlocked and the fuel filler flap open, turn the blue cap of the AdBlue® tank
a quarter turn anti-clockwise.
Filling up
► With a container of AdBlue®: after checking
the expiry date, read the instructions on the
label carefully before pouring the contents of the
container into the vehicle's AdBlue tank.► With an AdBlue® pump: introduce the nozzle
and fill the tank until the nozzle automatically
cuts out.
In order not to overfill the AdBlue® tank:
– Add between 10 and 13 litres using AdBlue® containers.
– Stop after the nozzle’ s first automatic cut-out, if you are refilling at a service station.
The system only registers AdBlue® top-ups of 5 litres or more.
If the AdBlue® tank is completely empty
– which is confirmed by the message
"Top up AdBlue: Starting impossible" – it is essential to add at least 5 litres.
After refilling
► Perform the same sequence of operations in reverse order.
Do not dispose of AdBlue® containers in
the household waste.
Place them in a container reserved for this
purpose or take them back to where you
purchased them.
Advice on care and
maintenance
General recommendations
Observe the following recommendations to avoid
damaging your vehicle.
Exterior
Never use a high-pressure jet wash in
the engine compartment, due to the risk
of damaging electrical components.
Do not wash the vehicle in strong sunshine or
extremely cold conditions.
When washing the vehicle at an
automatic roller-brush car wash, be sure
to lock the doors and, depending on version,
remove the electronic key and deactivate the
“hands-free” function (“Hands-Free Tailgate
Access”).
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
estates) and mud (in wet or cold areas).
These substances can be highly corrosive.
Contact a CITROËN dealer or a qualified
workshop if you require advice on removing
stubborn stains requiring special products
(such as tar or insect removers).

140
In the event of a breakdown
Access to the kit

This kit is installed in the storage box, under the
boot floor.
Repair procedure
Do not remove any foreign bodies (e.g.
nail, screw) which have penetrated into
the tyre.
► Park the vehicle without obstructing traffic and apply the parking brake.► Follow the safety instructions (hazard warning lamps, warning triangle, high visibility
vest, etc.) according to the legislation in force in
the country of driving.
► Switch off the ignition.► Uncoil the pipe stowed under the compressor.
3.Removable towing eye and flat blade
screwdriver
The flat blade screwdriver allows the cover
plate on the front or rear bumper to be
opened to screw in the removable towing
eye.
For more information on Towing the vehicle
and using the removable towing eye, refer to the
corresponding section.
With temporary puncture repair kit

4.12 V compressor with a cartridge of sealant and a speed limit sticker
For temporary repair of a tyre and to adjust
the tyre pressure.
For more information about the Temporary
puncture repair kit, refer to the corresponding
section.
With spare wheel

5. Wheelbrace
For removing the wheel trim and the wheel
bolts.
6. Jack with integrated handle
To raise the vehicle.
7. Wheel bolt cap removal tool (depending on
equipment)
For removing the wheel bolt head finishers on
alloy wheels.
For further information on the Spare wheel,
please refer to the corresponding section.
These tools are specific to the vehicle and may vary according to the level of
equipment.
Do not use them for any other purpose.
The jack must only be used to change a wheel with a damaged or punctured tyre.
Do not use any jack other than the one
supplied with the vehicle.
If the vehicle does not have its original jack,
contact a CITROËN dealer or a qualified
workshop to obtain the one that was intended
by the manufacturer.
The jack meets European standards, as
defined in the Machinery Directive 2006/42/
CE.
The jack does not require any maintenance.
Temporary puncture repair kit
Scan the QR Code on page 3 to view
explanatory videos.
Made up of a compressor and a sealant
cartridge, it allows you to carry out a temporary
repair of the tyre so that you can drive to the
nearest garage.
It is designed to repair most punctures located
on the tyre tread.
For more information on the Tool kit,
refer to the corresponding section.

165
Bluetooth® audio system
10Radio:Select the previous / next preset radio
station.
Select the previous / next item in a menu or a
list.
Media:
Select the previous / next track.
Select the previous / next item in a menu or a
list.
Radio:Short press: display the list of radio
stations.
Long press: update the list.
Media:
Short press: display the list of folders.
Long press: display the available sorting options.
Other than telephone call:Short press: changing audio source
(radio; USB; AUX (if equipment connected); CD;
streaming), confirmation if the "Telephone"
menu is open.
Long press: open the " Telephone" menu.
In the event of a telephone call:
Short press: accept the call.
Long press: reject the call.
During a telephone call:
Short press: open the contextual telephone
menu.
Long press: end the call.
Confirm a selection.
Increase volume.
Decrease volume.
Mute / Restore sound by simultaneously pressing the increase and decrease
volume buttons.
Steering mounted controls -
Type 2

Access to the main menu.
Increase volume.
Mute / Restore the sound.
Decrease volume.
Other than telephone call:Short press: changing audio source
(radio; USB; AUX (if equipment connected); CD;
streaming), confirmation if the "Telephone"
menu is open.
Long press: open the " Telephone" menu.
In the event of a telephone call:
Short press: accept the call.
Long press: reject the call.
During a telephone call:
Short press: open the contextual telephone
menu. Long press: end the call.
Start voice recognition on your smartphone via the system.Radio:Short press: display the list of radio
stations.
Long press: update the list.
Media:
Short press: display the list of folders.
Long press: display the available sorting options.
Radio:Select the previous / next preset radio
station.
Select the previous / next item in a menu or a
list.
Media:
Select the previous / next track.
Select the previous / next item in a menu or a
list.
Press the thumbwheel: confirm.
Menus
Depending on version."Multimedia": Media settings, Radio
settings.
"Telephone": Call, Directory
management, Telephone management,
Hang up.
"Trip computer".
"Maintenance": Diagnosis, Warning log,
etc.

214
Alphabetical index
180° rear vision 118
A
ABS 67Accessories 64Active Safety Brake 108–109, 111AdBlue® 14, 135
AdBlue® tank 136Additive, Diesel 133–134Adjusting headlamps 59Adjusting head restraints 36Adjusting seat 37Adjusting the air distribution 44Adjusting the air flow 44–45Adjusting the date 17, 22, 187, 210Adjusting the height and reach of the steering wheel 41Adjusting the seat angle 37Adjusting the seat belt height 71Adjusting the temperature 44Adjusting the time 17, 22, 187, 210Advice on care and maintenance 137Advice on driving 6, 86Airbags 73, 75, 77Airbags, curtain 74–75Airbags, front 74–75, 78Airbags, lateral 74–75Air conditioning 43–44Air conditioning, automatic 44Air conditioning, manual 43–44
Air intake 44Air vents 42Alarm 30–32Anti-lock braking system (ABS) 67Antitheft / Immobiliser 26Apple CarPlay connection 183, 199Armrest, front 49Armrest, rear 50Assistance call 65
Assistance, emergency braking 67, 110Audible warning 65Audio streaming (Bluetooth) 170, 182, 204
B
Battery 128, 152–155Battery, 12 V 133–134, 154Battery, charging 154Battery, remote control 26–27Blind 32–33Blind spot sensors 113Blinds, side 50BlueHDi 14, 133, 139Bluetooth (hands-free) 170–171, 184–185, 205–206Bluetooth (telephone) 184–185, 205–207Bodywork 138Bonnet 130Boot 29, 54Brake discs 134Brake lamps 148
Brakes 134Braking assistance system 67Braking, automatic emergency 108–111Brightness 186Bulbs 147Bulbs (changing) 146–148
C
Cable, audio 204Cable, Jack 204Capacity, fuel tank 123–124Cap, fuel filler 123–124Care of the bodywork 138CD 169, 182, 204CD, MP3 169, 182, 204Central locking 25, 30Changing a bulb 146–149Changing a fuse 150–152Changing a wheel 139, 143Changing a wiper blade 61–62Changing the remote control battery 27Charger, induction 48Charger, wireless 48Checking the engine oil level 14Checking the levels 131–133Checking tyre pressures (using the kit) 140, 142Checks 131, 133–134Checks, routine 133–134Child lock 84–85

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