2021 CITROEN C4 AIRCROSS battery

99
Changing the mode of
the vehicle
With the electronic key inside the vehicle; each
press on the "START/STOP " button, with no
action on the pedals , changes the vehicle's
mode:
F

F
irst press (ACC mode), the button's
warning lamp comes on in orange.
T

he accessories (radio, 12V socket...) can
be used.
F

S
econd press (ON mode), the button's
warning lamp comes on in green.
S

witching on the ignition.
F

T
hird press (OFF mode), the warning lamp
in the button goes off. If you use the accessories for a
prolonged period with the ignition
switch in position 2 (ACC)
, you risk
discharging the battery. Starting your
vehicle will then no longer be possible.
Ta k e c a r e .
See the "Automatic power cut-off to
accessories" section.
Starting - stopping the engine with the Keyless Entry and
Starting system
If the warning lamp flashes orange,
contact a CITROËN dealer or a
qualified workshop as soon as possible.
F

P
ress and release the "S TA R T/
STOP " button.
F

W
ith the electronic key inside the vehicle,
depress the clutch pedal fully on vehicles
with a manual gearbox or press the brake
pedal on vehicles with a CVT gearbox.
Starting using the
electronic key
For vehicles fitted with a manual gearbox, put
the gear lever in neutral.
For vehicles fitted with a
CVT gearbox, put the
gear lever in P .
4
Driving

109
Emergency release
If the battery is discharged or if the gear lever
locking mechanism is damaged, it is possible
for the gear lever to be locked in position P,
even when you press the brake pedal firmly. However, if you have to move the vehicle,
release the gear lever using the following
procedure:
F

A
pply the parking brake.
F

S
witch off the engine if necessary.
F

R
emove the cap A, using a flat screwdriver
covered with a cloth.
F

P
ress the brake pedal firmly.
F

P
ut the ignition switch into position ACC
(ACC mode, if you vehicle has the Keyless
Entry and Starting system).
F

I
nsert the screwdriver into the aperture.
F

W
hile pushing the screwdriver downwards,
move the gear lever to position N .
You must contact a CITROËN dealer
or a qualified workshop to have the
system checked
.
4
Driving

111
Stop & Start (auto Stop & Go) function
Operation
Going into engine STOP mode
The "AS &G" warning lamp comes on in
the instrument panel or the instrument
panel screen and the engine goes into
standby after a few seconds:
-

w

ith a manual gearbox , with the vehicle
stationary and your foot on the brake, when
you put the gear lever into neutral and
release the clutch pedal.
Never refuel with the engine in STOP
mode; you must switch off the ignition
with the key or the START/STOP
button. When the engine is stopped
automatically, the operation of certain
vehicle systems, such as for example,
braking, power steering... are modified.
Ta k e c a r e.
Special cases: STOP mode not
available
STOP mode is not invoked when:
-
t he driver's seat belt is not fastened,
-

t
he driver's door is open,
-

t
he bonnet is open,
-

t
he minimum time period of 30 seconds
since starting the engine has not elapsed,
-

t
he vehicle has not exceeded 3 mph
(5
km/h) since the last engine start,
-

t
he vehicle has restarted less than
10
seconds ago,
-

t
he engine is needed to maintain a
comfortable temperature in the passenger
compartment,
-

d
emisting is active,
-

s
ome special conditions (battery charge,
engine temperature, braking assistance,
ambient temperature...) where the engine is
needed to assure control of a system.
-

t
he "AS &G" warning lamp is
flashing in the instrument panel.
This operation is perfectly normal.
The Stop & Start (Auto Stop & Go) function puts the engine temporarily into standby during stops in the traffic (red lights, traffic jams, or other...).
The

engine restarts automatically as soon as you want to move off. The restart takes place instantly, quickly and silently.
Per fect for urban use, the Stop & Start (Auto Stop & Go) function reduces fuel consumption and exhaust emissions as well as the noise level when
stationary.
If you move the gear lever, the "AS &G"
warning lamp flashes, accompanied by
an audible signal.
The alert stops as soon as the gear
lever is returned to the neutral position.
4
driving

112
Going into engine START mode
The "AS &G" warning lamp goes off
and the engine starts automatically:
-

w

ith a manual gearbox , when you fully
depress the clutch pedal. For safety reasons or to ensure smooth
operation, START mode is invoked
automatically when:
Special cases: START invoked
automatically
- the speed of the vehicle exceeds 2 mph
(3 km/h),
-

y
ou open the driver's door,
-

y
ou unfasten the driver's seatbelt,
-

s
ome special conditions (battery charge,
engine temperature, braking assistance,
ambient temperature...) where the engine is
needed to assure control of a system.
If the system has been deactivated in
STOP mode, the engine will not start.
At any time, press the "AS &G O FF "


switch to
deactivate the system.
Deactivation
In this case the "AS &G" warning lamp
flashes for few seconds, then goes off.
This operation is perfectly normal.This is confirmed by the "AS &G O FF "
warning lamp coming on in the instrument
panel or instrument panel screen.
If the bonnet is opened while the engine
is in standby, the "AS &G" warning lamp
flashes, accompanied by an audible
signal. The engine will not restart
automatically.
To restart the engine with the bonnet
open, use the ignition key or press the
START/STOP button, while pressing
fully on the brake and clutch pedals.
Driving

113
The system is reactivated automatically
at every new start using the key or the
START/STOP button.
Reactivation
Press the "AS &G O FF " switch again.
The system is active again; this is confirmed by
the "AS &G O FF " warning lamp going off in the
instrument panel or instrument panel screen.
Operating fault
In the event of a malfunction with the system,
the "AS &G O FF " warning lamp flashes in the
instrument panel or instrument panel screen,
and the system no longer operates.
have it checked by a CITROËN dealer or a
qualified workshop. This system requires a specific
battery with a special specification
and technology (reference numbers
available from a CITROËN dealer or a
qualified workshop).
Fitting a battery not listed by CITROËN
introduces the risk of malfunction of the
system.
Maintenance
The "Auto Stop & Go" system makes
use of advanced technology. All work
on this type of battery must be done
only by a CITROËN dealer or a qualified
workshop.
In the event of a fault in STOP mode, the
vehicle may stall. The following warning lamps
come on in the instrument panel or instrument
panel screen:
It is then necessary to switch off the ignition,
then restart the engine using the key or the
START/STOP button.
4
Driving

116
The reinitialisation instruction is entered in
the screen menu, with the ignition on and the
vehicle stationary.
F Press repeatedly on the INFO button
to select "REINITIALISE" (located in
menu
2/3 or 3/3 depending on the
instrument panel) .
F

P
ress and hold the INFO button for at least
3 seconds to reinitialise the under-inflation
detection system.
Reinitialisation of the system is confirmed
by the flashing of the warning lamp in the
instrument panel. The under-inflation alert is only reliable
if the system has been reinitialised
with the four tyre pressures correctly
adjusted.
Operating fault
The flashing and then fixed illumination of the
under-inflation warning lamp accompanied by
the display of a message indicates a fault with
the system.
In this case, monitoring of the tyre pressures is
not assured.
This alert is also displayed if:
-

o
ne or more wheels is not fitted with a
sensor (spare wheel in use),
-

a w
ireless device operating on the same
frequency is close to the vehicle,
-

t
here are accumulations of snow or ice in
the wings or wheels,
-

t
he state of charge of the tyre pressure
monitoring system battery is too low,
-

t
he wheel sensor identifiers have not been
memorised in the system by a CITROËN
dealer or a qualified workshop. Any tyre repair or replacement on a
wheel fitted with this system must be
carried out by a CITROËN dealer or a
qualified workshop.
If you fit the second set of tyres
memorised in the system, a fault will
be signalled until the second set is
selected in the configuration menu. Go to a CITROËN dealer or a qualified
workshop
to have the system checked
or, following the repair of a puncture, to
have the original wheel, equipped with a
sensor, refitted.
Driving

139
Rear courtesy lamp
Position 1 "ON"
The courtesy lamp is permanently on.
Position 2 "●"
The courtesy lamp comes on when a door or
the tailgate is opened. When the door or the
tailgate is closed again, the lighting gradually
dims for a few seconds before switching off.
However, the courtesy lamp is switched off
immediately in the following cases:
-
W
hen the doors and the tailgate are
closed and the ignition switch is placed in
the
"ON" position.
-

W
hen the doors and the tailgate are closed
and you lock the vehicle.
Position 3 "OFF"
The courtesy lamp is permanently off.
Courtesy lamps automatic
switch off
With the engine off, the courtesy lamps,
map reading lamps and boot lamp switch
off automatically after 30 minutes to prevent
discharging of the battery.
The courtesy lamps are switched on again if
the ignition switch is placed in the "ON"
or "ACC " position, if you open then close a
door or the tailgate or if you use the remote
control.
5
Visibility

194
12 V battery
The battery is located under the bonnet.
To gain access to it:
F
o
pen the bonnet using the interior release
lever, then the exterior safety catch,
F

s
ecure the bonnet stay,
Access to the battery
Procedure for charging your battery when it is flat or for starting the engine using another battery and jump leads.
F
r
emove the retaining pins A,
F

r
emove the protective cover B,F

r
emove the retaining pins C,
F

r
emove the air duct D.
Practical information