ECU CITROEN C3 AIRCROSS 2021 Handbook (in English)

30
Access
Interior volumetric monitoring
The system checks for any variation in volume in
the passenger compartment.
The alarm is triggered if anyone breaks a
window, enters the passenger compartment or
moves inside the vehicle.
Anti-tilt monitoring
The system checks for any change in the attitude
of the vehicle.
The alarm goes off if the vehicle is lifted or
moved.
When the vehicle is parked, the alarm
will not be triggered if the vehicle is
knocked.
Self-protection function
The system checks for the putting out of service
of its components.
The alarm is triggered if the battery, the central
control or the siren wiring is put out of service or
damaged.
For all work on the alarm system, contact
a CITROËN dealer or a qualified
workshop.
Locking the vehicle with full
alarm system
Activation
– Switch off the ignition and exit the vehicle.

► Insert a small screwdriver into hole A of the
lock to unlock the tailgate.
► Move the latch to the left.
Locking after closing
If the fault persists after closing again, the boot
will remain locked.
Central locking


Manual
► Press this button to lock/unlock the vehicle (doors and boot) from inside the vehicle.
The indicator lamp comes on to confirm the
central locking of the vehicle.
Central locking does not take place if any
of the doors are open.
When locking/deadlocking from the
outside
When the vehicle is locked or deadlocked
from the outside, the indicator lamp flashes
and the button is inoperative.
► After normal locking, pull one of the interior door controls to unlock the vehicle.► After deadlocking, it is necessary to use the remote control, Keyless Entry and Starting
or the integral key to unlock the vehicle.
Automatic (anti-intrusion security)
The doors and boot lock automatically while driving (speed above 6 mph (10 km/h)).To deactivate/reactivate this function (activated
by default):
► Press the button until an audible warning is triggered and a confirmation message appears.
Transporting long or voluminous
objects
Press the central locking control to drive
with the boot open and the doors locked.
Otherwise, every time the speed of the
vehicle exceeds 6 mph (10 km/h), the locks
will rebound and an alert will appear.
Pressing the central locking button unlocks
the vehicle.
Above 6 mph (10 km/h), this unlocking is
temporary.
Alarm


System which protects and provides a deterrent
against theft and break-ins.
Exterior perimeter monitoring
The system checks for opening of the vehicle.
The alarm is triggered if anyone tries to open a
door, the boot or the bonnet, for example.

36
Ease of use and comfort
Correct driving position
For safety reasons, adjustments must
only be made when the vehicle is
stationary.
Before taking to the road and to make the most
of the ergonomic layout of the instruments and
controls, carry out these adjustments in the
following order:
– head restraint height.– seat backrest angle.– seat cushion height.– longitudinal seat position.– steering wheel height and reach.– rear view mirror and door mirrors.

Once these adjustments have been
made, check that the instrument panel
can be viewed correctly from your driving
position.
Front head restraints
Height adjustment

Upward:► pull the head restraint up to the desired position; the head restraint can be felt to click
into position.
Downward:
► press the lug A and push the head restraint
down to the desired position.
The adjustment is correct when the upper edge of the head restraint is level
with the top of the head.
Removing a head restraint
► Pull the head restraint up as far as it will go.► Press the lug A to release the head restraint
and remove it completely.
► Stow the head restraint securely .
Refitting a head restraint
► Introduce the head restraint rods into the guides in the seat backrest.► Push the head restraint down as far as it will go.► Press the lug A to free the head restraint and
push it down.
► Adjust the height of the head restraint.
Never drive with the head restraints
removed; they should be in place and
correctly adjusted for the occupant of the
seat.
Front seats
For safety reasons, seat adjustments
must only be made when the vehicle is
stationary.
Adjustments
Forwards-backwards

► Raise the control bar and slide the seat forwards or backwards.► Release the bar to lock the seat in position on one of the notches.
Before moving the seat backwards,
ensure that there is no person or object
that might prevent the full travel of the seat.
There is a risk of trapping or pinching
passengers if present in the rear seats or of
jamming the seat if large objects are placed
on the floor behind the seat.
Height
(driver only)

50
Ease of use and comfort

This allows the storage of a toll ticket or a
parking card for example.
Mats
Fitting

When fitting the mat for the first time on the
driver's side, use only the fasteners supplied in
the enclosed sachet.
The other mats are simply laid over the carpet.
Removing/refitting
► To remove it on the driver's side, move the
seat backwards and unclip the fasteners.
► To refit it, position the mat and secure it by pressing.► Check that the mat is secured correctly .
To avoid any risk of jamming the pedals:– Only use mats which are suitable for the fasteners already present in the vehicle;
these fasteners must be used.
– Never fit one mat on top of another.The use of mats not approved by CITROËN
may interfere with access to the pedals and
hinder the operation of the cruise control/
speed limiter.
The approved mats have two fasteners
located underneath the seat.
Rear fittings
Seat backrest pockets
They are located in the backrests of the front
seats.
Side blinds
Fitted to the windows in the second row, they
protect the passenger compartment from the
sun's rays.


► Pull the tab A and anchor the blind on the
hook B.
Always guide the blind slowly using the tab, both up and down.
Clothes hooks

They are located above each rear door.
Rear armrest and ski flap
It has two cup holders (depending on version).
It gives direct access to the boot for transporting
long objects.

52
Ease of use and comfort
► push the shelf down towards to pins to clip it,► hook the two cords.
Hooks

These can be used to secure shopping bags.
Take care to only hang up lightweight
bags.
Closed storage
compartments


► Pull upwards to unclip and open the removable grill.
Depending on the version you have, the storage
compartment on the right may contain the
vehicle tools.
2-position boot floor
This two-position floor allows the boot volume to
be optimised using the lateral stops located on
the sides:
– High position (100 kg max .): to obtain a flat
floor up to the front seats, when the rear seats
are folded down and fully back (depending on
version).
– Low position: maximum boot volume.

To change the height:► Lift and pull the floor towards you using its central handle, then use the lateral stops to
move it.
► Push the floor fully forwards to place it in the desired position.
Ensure that the boot is empty before
moving the boot floor.
Storage compartment

► Raise the boot floor as much as possible to
access the storage well.
Depending on the version, it includes:
– a temporary puncture repair kit with the vehicle tools,– a single spare wheel with the vehicle tools.
Courtesy lamps
1. Front courtesy lamp
2. Front map reading lamps
3.Rear courtesy lamp
4. Rear map reading lamps

72
Safety
Fastening

► Pull the strap, then insert the tongue in the buckle.► Check that the seat belt is fastened correctly by pulling on the strap.
Unlocking
► Press the red button on the buckle.► Guide the seat belt as it is reeled in.
Seat belt not fastened/
unfastened alerts


A.Front and rear seat belts not fastened/
unfastened warning lamp


1.Front left seat belt warning lamp
2. Front right seat belt warning lamp
3. Rear left seat belt warning lamp
4. Rear centre seat belt warning lamp
5. Rear right seat belt warning lamp
If the corresponding seat belt is not fastened
or is unfastened, when the ignition is switched
on, the seat belts warning lamp comes on in the
instrument panel and the corresponding warning
lamp (1 to 5) comes on in red in the seat belt and
front passenger airbag warning lamps display.
If a rear seat belt is not fastened, the
corresponding warning lamp ( 3 to 5)
comes on for around 30 seconds.
From about 12 mph (20 km/h) and for 2
minutes, each warning lamp corresponding to
an occupied seat whose seat belt is unfastened
flashes, accompanied by an audible signal. After
these 2 minutes, the corresponding seat warning
lamp remains on until the driver or the front/rear
passenger fasten their seat belt.
Advice
The driver must ensure that passengers use the seat belts correctly and that they
are all fastened before setting off.
Wherever seated in the vehicle, you must
always fasten the seat belt, even for short
journeys.
Do not interchange the seat belt buckles, as
they will not fulfil their role fully.
Before and after use, ensure that the seat belt
is reeled in correctly.
After folding or moving a seat or rear bench
seat, ensure that the seat belt is positioned
and reeled in correctly.
Installation
The lower part of the strap must be
positioned as low as possible on the pelvis.
The upper part must be positioned in the
hollow of the shoulder.
In order to be effective, a seat belt:
– must be tightened as close to the body as
possible;– must be pulled in front of you with a smooth movement, ensuring that it is not twisted;– must only be used to secure one person;– must not show signs of tearing or fraying;– must not be changed or modified, in order to avoid affecting its performance.
Recommendations for childrenUse a suitable child seat if the passenger
is less than 12 years old or shorter than one
and a half metres.
Never use the same seat belt to secure more
than one child.
Never carry a child on your lap.
For more information on Child seats, refer to
the corresponding section.
Maintenance
In accordance with current safety
regulations, for all repairs on your vehicle's
seat belts, go to a qualified workshop with
the skills and equipment needed, which a
CITROËN dealer is able to provide.
Have the seat belts checked regularly by a
CITROËN dealer or a qualified workshop,
particularly if the straps show signs of
damage.
Clean the seat belt straps with soapy water or
a textile cleaning product, sold by CITROËN
dealers.
Airbags
General information
System designed to help improve the safety
of the occupants sitting in the front seats and
the rear outer seats, in the event of a violent
collision. The airbags supplement the action

73
Safety
5Recommendations for children
Use a suitable child seat if the passenger
is less than 12 years old or shorter than one
and a half metres.
Never use the same seat belt to secure more
than one child.
Never carry a child on your lap.
For more information on Child seats, refer to
the corresponding section.
Maintenance
In accordance with current safety
regulations, for all repairs on your vehicle's
seat belts, go to a qualified workshop with
the skills and equipment needed, which a
CITROËN dealer is able to provide.
Have the seat belts checked regularly by a
CITROËN dealer or a qualified workshop,
particularly if the straps show signs of
damage.
Clean the seat belt straps with soapy water or
a textile cleaning product, sold by CITROËN
dealers.
Airbags
General information
System designed to help improve the safety
of the occupants sitting in the front seats and
the rear outer seats, in the event of a violent
collision. The airbags supplement the action
of the seat belts equipped with a force limiting
system.
Electronic detectors record and analyse the
front and side 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.
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.
Impact detection zones
A.Front impact zone
B. Side impact zone
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.

75
Safety
5Advice
For the airbags to be fully effective,
observe the safety recommendations
below.
Adopt a normal upright sitting position.
Fasten the seat belt ensuring it is correctly
positioned and adjusted.
Do not leave anything between the occupants
and the airbags (a child, pet, object, etc.), nor
fix or attach anything close to or in the way of
the airbag release trajectory; this could cause
injuries during their deployment.
Never modify the original definition of your
vehicle, particularly in the area directly around
the airbags.
After an accident or if the vehicle has been
stolen, have the airbag systems checked.
All work on the airbag systems must only
be performed by a CITROËN dealer or a
qualified workshop.
Even if all of the precautions mentioned
are observed, a risk of injury or of minor
burns to the head, chest or arms cannot be
ruled out when an airbag is deployed. The
airbag inflates almost instantly (within a few
milliseconds) then deflates within the same
time discharging the hot gas via openings
provided for this purpose.
Front airbags
Do not drive holding the steering wheel
by its spokes or resting your hands on the
centre part of the wheel.
Passengers must not place their feet on the
dashboard.
Do not smoke as deployment of the airbags
can cause burns or the risk of injury from a
cigarette or pipe.
Never remove or pierce the steering wheel or
hit it violently.
Do not fix or attach anything to the steering
wheel or dashboard, as this could cause
injuries when the airbags are deployed.
Lateral airbags
Use only approved covers on the seats,
compatible with the deployment of the lateral
airbags. For information on the range of seat
covers suitable for your vehicle, contact a
CITROËN dealer.
Do not fix or attach anything to the seat
backrests (clothes, etc.), as this could cause
injuries to the thorax or arm when the lateral
airbag is deployed.
Do not sit with the upper part of the body any
nearer to the door than necessary.
The vehicle's front door panels include side
impact sensors.
A damaged door or any unauthorised or
incorrectly executed work (modification or
repair) on the front doors or their interior trim
could compromise the operation of these
sensors - risk of malfunction of the lateral
airbags!
Such work must only be done by a CITROËN
dealer or a qualified workshop.
Curtain airbags
Do not fix or attach anything to the roof,
as this could cause head injuries when the
curtain airbag is deployed.
Do not remove the grab handles installed on
the roof, as they play a part in securing the
curtain airbags.
Child seats
The regulations on carrying children are specific to each country. Refer to the
legislation in force in your country.
For maximum safety, please observe the
following recommendations:
– In accordance with European regulations, all
children under the age of 12 or less than 4
ft 11” (150 cm) tall must travel in approved
child seats suited to their weight , on seats
fitted with a seat belt or ISOFIX mountings.
– Statistically, the safest seats in your
vehicle for carrying children are the rear
seats.
– Children weighing less than 9 kg must
travel in the "rear facing" position, whether in
the front or rear of the vehicle.

76
Safety
It is recommended that children travel
on the rear seats of the vehicle:
– ‘rear facing’ up to the age of 3,– ‘forward facing’ over the age of 3.
Make sure that the seat belt is correctly
positioned and tightened.
For child seats with a support leg, ensure that
the support leg is in firm and steady contact
with the floor.
Advice
An incorrectly installed child seat compromises the child's safety in the
event of an accident.
Ensure that there is no seat belt or seat belt
buckle under the child seat, as this could
destabilise it.
Remember to fasten the seat belts or the
harness of child seats, keeping the slack
relative to the child's body to a minimum,
even for short journeys.
When installing a child seat using the seat
belt, ensure that the seat belt is tightened
correctly on the child seat and that it secures
the child seat firmly on the seat of the vehicle.
If the passenger seat is adjustable, move it
forwards if necessary.
Remove the head restraint before
installing a child seat with a backrest on a
passenger seat.
Ensure that the head restraint is stored or
attached securely to prevent it from being
thrown around the vehicle in the event of
sharp braking. Refit the head restraint once
the child seat has been removed.
Installing a booster seat
The chest part of the seat belt must be
positioned on the child's shoulder without
touching the neck.
Ensure that the lap part of the seat belt
passes correctly over the child's thighs.
Use a booster seat with backrest, equipped
with a belt guide at shoulder level.
Additional protections
To prevent accidental opening of the
doors and rear windows, use the "Child lock".
Take care not to open the rear windows by
more than one third.
To protect young children from the rays of the
sun, fit side blinds on the rear windows.
As a safety precaution, do not leave:
– a child alone and unattended in a vehicle,– a child or an animal in a vehicle which is exposed to the sun, with the windows closed,– the keys within reach of children inside the vehicle.
Child seat at the rear
"Forward facing" or "Rearward
facing"



► Move the vehicle's front seat forward and straighten the backrest so that the legs of the
child in the "forward facing" child seat or the
"rearward facing" child seat itself do not touch
the vehicle's front seat.
► Verify that the backrest of the "forward facing" child seat is as close as possible to the backrest
of the vehicle's rear seat, and is ideally in contact
with it.
Centre rear seat
A child seat with a support leg must never be
installed on the centre rear passenger seat .
Child seat at the front

► Adjust the front passenger seat to the maximum rear longitudinal position , with the
backrest straightened .
"Rearward facing"

The front passenger airbag must be
deactivated before installing a rearward
facing child seat. Otherwise, the child risks
being seriously injured or killed if the
airbag deploys.

78
Safety
Deactivating/Reactivating the front
passenger airbag
The control is located in the glove box.

With the ignition off:► To deactivate the airbag, turn the key in the switch to the "OFF" position. ► To reactivate it, turn the key to the "ON"
position.
When the ignition is switched on:
This warning lamp comes on and remains lit to signal the deactivation.
Or
This warning lamp comes on for about 1 minute to signal the activation.
Recommended child seats
Range of recommended child seats secured
using a three-point seat belt.
Group 0+: from birth to 13 kg

L1
"RÖMER Baby-Safe Plus"
Installed in the "rearward facing" position.
Groups 2 and 3: from 15 to 36 kg

L5
"RÖMER KIDFIX XP"
Can be fitted to the vehicle's ISOFIX mountings.
The child is restrained by the seat belt.
Only suitable for installation on the side rear seats.
The head restraint on the vehicle seat must be removed.
Groups 2 and 3: from 15 to 36 kg

L6
"GRACO Booster"
The child is restrained by the seat belt.
Only suitable for installation on the front
passenger seat or on the rear side seats.
Locations for child seats secured using the seat belt
In accordance with European regulations, this table indicates the options for installing child seats secured using the seat belt and universally approved (a)
in relation to the weight of the child and the seat position in the vehicle.
Weight of the child
/ indicative age
SeatUnder 13 kg(groups 0 (b) and
0+)
Up to about 1 year
oldFrom 9 to 18 kg(group 1)
From about 1 to 3
years oldFrom 15 to 25 kg(group 2)
From about 3 to 6
years oldFrom 22 to 36 kg(group 3)
From about 6 to
10 years old
Row 1 (c) Passenger seat with
passenger airbag
deactivated "OFF"


U UX X
Passenger seat with
passenger airbag
activated "ON" X
XU U
Row 2 (d) (e) Rear side seats


U UU U
Rear central seat


X XX X
U
: seat position suitable for installing a child seat secured using the seat belt and universally approved for "rearward facing" and/or "forward facing" use.X: seat position not suitable for installing a child seat for the weight group indicated.
(a): Universal child seat: child seat which can be installed in any vehicle using the seat belt.
(b)
: Group 0: from birth to 10 kg. Carrycots and "car" infant carriers cannot be installed on the front passenger seat.(c): refer to the legislation in force in your country before installing your child in this seat position.
(d): to install a "rearward facing" or "forward facing" child seat at the rear , move the front seat forward, then straighten the backrest to allow enough room
for the child seat and the child's legs.
(e):: to install a "rearward facing" or "forward facing" child seat at the rear , slide the rear seat as far backwards as possible, with the backrest straightened.

79
Safety
5Locations for child seats secured using the seat belt
In accordance with European regulations, this table indicates the options for installing child seats secured using the seat belt and universally approved (a)
in relation to the weight of the child and the seat position in the vehicle.
Weight of the child / indicative age
SeatUnder 13 kg(groups 0 (b) and
0+)
Up to about 1 year
oldFrom 9 to 18 kg(group 1)
From about 1 to 3
years oldFrom 15 to 25 kg(group 2)
From about 3 to 6
years oldFrom 22 to 36 kg(group 3)
From about 6 to
10 years old
Row 1 (c) Passenger seat with
passenger airbag
deactivated "OFF"


U UX X
Passenger seat with
passenger airbag
activated "ON" X
XU U
Row 2 (d) (e) Rear side seats


U UU U
Rear central seat


X XX X
U
: seat position suitable for installing a child seat secured using the seat belt and universally approved for "rearward facing" and/or "forward facing" use.X: seat position not suitable for installing a child seat for the weight group indicated.
(a): Universal child seat: child seat which can be installed in any vehicle using the seat belt.
(b)
: Group 0: from birth to 10 kg. Carrycots and "car" infant carriers cannot be installed on the front passenger seat.(c): refer to the legislation in force in your country before installing your child in this seat position.
(d): to install a "rearward facing" or "forward facing" child seat at the rear , move the front seat forward, then straighten the backrest to allow enough room
for the child seat and the child's legs.
(e):: to install a "rearward facing" or "forward facing" child seat at the rear , slide the rear seat as far backwards as possible, with the backrest straightened.