2020 CITROEN C3 AIRCROSS battery

172
Load reduction mode
System which manages the use of certain
functions according to the level of charge
remaining in the battery.
When the vehicle is being driven, the load
reduction function temporarily deactivates
certain functions, such as air conditioning,
heated rear screen, etc.
The deactivated functions are reactivated
automatically as soon as conditions permit.
Energy economy mode
System which manages the duration of use of
certain functions to conser ve a sufficient level
of charge in the battery.
After the engine has stopped, you can still use
functions such as the audio and telematics
system, windscreen wipers, dipped beam
headlamps,
courtesy lamps, etc. for a
maximum combined duration of about forty
minutes.
Switching to this mode
A message appears in the instrument panel
screen indicating that the vehicle has switched
to economy mode and the active functions are
put on standby.
If a telephone call is being made at this
time, it will be maintained for around
10
minutes with the hands-free kit of your
audio system.
Exiting the mode
These functions will be automatically restored
the next time the vehicle is used.
In order to restore the use of these functions
immediately, start the engine and let it run:
-

f
or less than ten minutes, to use the
equipment for approximately five minutes, A flat battery prevents the engine from
starting.
For more information on the 12
V batter y
,
refer to the corresponding section.
Obser ve the maximum authorised towable
weight, indicated on your vehicle's
registration certificate, the manufacturer's
label as well as in the Technical data

section of this guide.
Complying with the maximum
authorised nose weight (towball)
also includes the use of accessories
(bicycle carriers, tow boxes, etc.).
Obser ve the legislation in force in the
country in which you are driving. -
f
or more than ten minutes, to use the
equipment for up to approximately thirty
minutes.
Let the engine run for the duration specified to
ensure that the battery charge is sufficient.
Do not repeatedly and continuously restart the
engine in order to charge the battery.
Practical information

176
3.Brake fluid reser voir.
4. Battery.
5. Fusebox.
6. A i r f i l t e r.
7. Engine oil dipstick.
8. Engine oil filler cap.
9. Remote earth point.
10. Priming pump*.
The Diesel circuit is under very high
pressure.
All work on this circuit must be carried out
only by a CITROËN dealer or a qualified
workshop.
*
D

epending on engine.
Checking levels
Check all of these levels regularly, in line with
the manufacturer's service schedule. Top them
up if necessary, unless other wise indicated.
If a level drops significantly, have the
corresponding system checked by a CITROËN
dealer or a qualified workshop. The fluid must comply with the
manufacturer's recommendations 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).
Used products
Avoid prolonged contact of used oil or
fluids with the skin.
Most of these fluids are harmful to health
or indeed very corrosive.
Do not discard used oil or fluids into
sewers or onto the ground.
Take used oil to a CITROËN dealer or
a qualified workshop and dispose of
it in the containers reser ved for this
purpose.
Engine oil level
The check is carried out either when
the ignition is switched on using the
oil level indicator in the instrument
panel for vehicles so equipped, or
using the dipstick. To ensure that the reading is correct, your
vehicle must be parked on a level sur face
with the engine having been off for more
than 30


minutes.
It is normal to top up the oil level between
two ser vices (or oil changes). CITROËN
recommends that you check the level, and top
up if necessary, every 3,000 miles (5,000 km).
Checking using the dipstick
The location of the dipstick is shown in the
corresponding underbonnet layout view.
F

T
ake the dipstick by its coloured grip and
pull it out completely.
F

W
ipe the end of the dipstick using a clean
non-fluffy cloth.
F

R
efit the dipstick and push fully down, then
pull it out again to make the visual check:
the correct level is between marks A and B .
Practical information

178
When the engine is warm, the temperature of
the coolant is regulated by the fan.
In addition, as the cooling system is
pressurised, wait at least one hour after
switching off the engine before carrying out any
work.
To avoid the risk of scalding when you need to
top up in an emergency, place 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 the coolant.The cooling fan may star t after
switching off the engine: take care
with articles and clothing that might be
caught by the fan blades.
Fluid specification
The fluid must conform to the manufacturer's
recommendations.
Screenwash fluid level
A low coolant level presents a risk of serious
damage to your engine.
Top up the fluid when necessary.Fluid specification
The screenwash fluid must be topped up with a
ready for use mix.
In winter (temperatures below zero), a fluid with
antifreeze must be used that is appropriate for
the prevailing conditions, in order to preser ve
the elements of the system (pump, tank, ducts,
e t c .) .
Filling with pure water is prohibited under all
circumstances (risk of freezing, limestone
deposits, etc.).
Diesel fuel additive level
(Diesel with particle filter)
The additive tank minimum level is
indicated by fixed illumination of this
warning lamp, accompanied by an
audible signal and a message that
the particle filter additive level is
too low.
To p p i n g u p
The reser voir must be topped up without delay
by a CITROËN dealer or a qualified workshop.
AdBlue level
An alert is triggered once the reser ve level is
reached.
To avoid the vehicle being immobilised as per
regulations, you must top up with AdBlue.
For more information on AdBlue
® and the SCR
system, and, in particular, topping it up, 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.
Other wise, have them checked by a CITROËN
dealer or a qualified workshop.
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.
Practical information

179
For more information on the precautions
to take before starting 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.
Air filter
Depending on the environment
(e.g. dusty atmosphere) and the
use of the vehicle (e.g. city driving),
replace it twice as often if
necessary .
Passenger compartment filter
Depending on the environment
(e.g. dusty atmosphere) and the
use of the vehicle (e.g. city driving),
replace it twice as often if
necessary. A clogged passenger compartment
filter may have an adverse effect on
the per formance of the air conditioning
system and generate undesirable odours.
Oil filter
Replace the oil filter each time the
engine oil is changed.
Particle filter (Diesel)
The start of saturation of the particle
filter is indicated by the constant
illumination of this warning lamp
accompanied by an alert message.
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
and particularly on the level of Diesel
additive, refer to the corresponding
section.
On a new vehicle, the first particle
filter regeneration operations may be
accompanied by a "burning" smell, which
is per fectly normal.
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 on acceleration. This does not
affect the behaviour of the vehicle or the
environment.
Manual gearbox
The gearbox does not require any
maintenance (no oil change).
7
Practical information

201
Fuses under the bonnet
The fusebox is placed in the engine
compartment near the battery.
Access to the fuses
F Unclip the cover.
F C hange the fuse.
F

W
hen you have finished, close the cover
very carefully to ensure correct sealing of
the fusebox. Fuse
No. Rating
(A) Functions
F15 10Front left foglamp.
F16 10Front right foglamp.
F18 10Right-hand main beam headlamp.
F19 10Left-hand main beam headlamp.
F29 40Windscreen wipers (front).
8
In the event of a breakdown

202
12 V battery
Procedure for starting the engine using another
battery or charging a discharged battery.
Lead-acid starter batteries
Batteries contain harmful substances
such as sulphuric acid and lead.
They must be disposed of in
accordance with regulations and must
not, in any circumstances, be discarded
with household waste.
Take used remote control batteries and
vehicle batteries to a special collection
point.
Protect your eyes and face before
handling the battery.
All operations on the battery must be
carried out in a well ventilated area and
away from naked flames and sources of
sparks, so as to avoid the risk of explosion
or fire.
Wash your hands afterwards.
Access to the battery
The battery is located under the bonnet.
For access to the (+) terminal:
F

r
elease the bonnet by activating the internal
control, then the external control,
F

l
ift the bonnet, then hold it in place with its
st ay.
(+) Positive terminal.
It has a quick-release clamp.
(-) Negative terminal.
The battery (-) terminal is not accessible, use
the engine mounting.
Starting using another
battery
When your vehicle's battery is discharged, the
engine can be started using a back-up battery
(external or from another vehicle) and jump
leads or a battery booster. Never try to start the engine by connecting
a battery charger.
Never use a 24
V or higher battery
b o o s t e r.
Check beforehand that the back-up
battery has a nominal voltage of 12 V and
a capacity at least equal to that of the
discharged battery.
The two vehicles must not be in contact
with each other.
Switch off all the electrical consumers
on both vehicles (audio system, wipers,
lighting, etc.).
Make sure that the jump leads are not
close to moving parts of the engine (fan,
belts, etc.).
Do not disconnect the (+) terminal while
the engine is running.
F
L
ift the plastic cover on the (+) terminal, if
your vehicle has one.
In the event of a breakdown

203
F Connect the red cable to the positive terminal (+) of the flat battery A (at the metal
elbow) then to the positive terminal (+) of the
back-up battery B or the booster.
F

C
onnect one end of the green or black
cable to the negative terminal (-) of the
back-up battery B or the booster (or an
earth point on the other vehicle).
F

C
onnect the other end of the green or black
cable to the earth point C on the broken
down vehicle.
F

S
tart the engine of the vehicle with the
good battery and leave it running for a few
minutes.
F

O
perate the starter on the broken down
vehicle and let the engine turn.
If the engine does not start straight away,
switch off the ignition and wait a few moments
before trying again.
F

W
ait until the engine returns to idle then
disconnect the jump lead cables in the
reverse order.
F

R
efit the plastic cover to the positive
terminal (+), if your vehicle has one.
F

A
llow the engine to run for at least
30
minutes, by driving or with the vehicle
stationary, so that the battery reaches an
adequate state of charge. Some functions, including Stop & Start,
are not available if the battery is not
sufficiently charged.
Charging the battery using
a battery charger
For optimum ser vice life of the battery, it is
essential to maintain an adequate state of
charge.
In some circumstances it may be necessary to
charge the battery:
-

i
f you use your vehicle mostly for short
journeys.
-

i
f the vehicle is to be taken off the road for
several weeks.
Contact a CITROËN dealer or a qualified
workshop.
If you plan to charge your vehicle's battery
yourself, use only a charger compatible
with lead-acid batteries of a nominal
voltage of 12
V.
Follow the instructions provided by the
manufacturer of the charger.
Never reverse polarities. It is not necessary to disconnect the
battery.
F
S
witch off the ignition.
F
S
witch off all electrical consumers (audio
system, lighting, wipers, etc.).
F
S
witch off the charger B before connecting
the cables to the battery, so as to avoid any
dangerous sparks.
F

E
nsure that the charger cables are in good
condition.
F

R
aise the plastic cover, if your vehicle has
one, on the positive (+) terminal.
F

C
onnect the charger B cables as follows:
-

t
he positive (+) red cable to the (+)
terminal of the battery A ,
-

t
he negative (-) black cable to the earth
point C on the vehicle.
F

A
t the end of the charging operation, switch
off the charger B before disconnecting the
cables from the battery A .
8
In the event of a breakdown

204
Never try to charge a frozen battery – risk
of explosion!
If the battery has frozen, have it checked
by a CITROËN dealer or by a qualified
workshop who will check that the internal
components have not been damaged and
that the container has not cracked, which
would mean a risk of toxic and corrosive
acid leaking. If this label is present, it is essential to
use only a 12 V charger to avoid causing
irreversible damage to the electrical
components related to the Stop & Start
system.
Disconnecting the battery
In order to maintain an adequate state
of charge for starting the engine, it is
recommended that the battery be disconnected
if the vehicle is taken out of ser vice for a long
period. Before disconnecting the battery:
F

c
lose all openings (doors, tailgate, windows,
sunroof),
F
s
witch off all electrical consumers (audio
system, wipers, lighting, etc.),
F
s
witch off the ignition and wait for four
minutes.
At the battery, it is only necessary to
disconnect the (+) terminal.
Quick-release terminal clamp
Disconnecting the (+) terminal
F

Ra
ise the lever A fully to release the
clamp


B.
F

R
emove the clamp B by lifting it off. Reconnecting the (+) terminal
F

Ra
ise the lever A fully.
F R efit the open clamp B on the (+)
terminal.
F P ush the clamp B fully down.
F

L
ower the lever A to lock the clamp B.
Do not force the lever as locking will not
be possible if the clamp is not positioned
correctly; start the procedure again.
Following reconnection of the battery
After reconnecting the battery, turn on the
ignition and wait 1 minute before starting
the engine, in order to enable the electronic
systems to initialise.
In the event of a breakdown