2023 CITROEN C4 CACTUS heating

32
Ease of use and comfort
The manual air conditioning operates when the
engine is running.
1.Recirculation of interior air.
2. Temperature adjustment.
3. Air distribution adjustment.
4. Air flow adjustment.
5. Air conditioning on / off.
► Select the Air conditioning touch
screen menu to display the controls page
for the system.
Temperature adjustment
► Press one of the arrows 2, or move the
slider from blue (cold) to red (hot) to adjust the
temperature to your liking.
Air flow adjustment
► Press one of the buttons 4 to increase or
decrease the speed of the air booster fan.
The air flow symbol (a fan) is filled in
progressively as the speed of the fan is
increased.
By reducing the air flow to a minimum, you are
stopping ventilation.
Avoid driving for too long without ventilation - risk of misting and
deterioration of air quality!
Air distribution adjustment
You can vary the air distribution in the passenger
compartment using the buttons 3.
Advice
Using the ventilation and air
conditioning system
►

T

o ensure that air is distributed evenly,
keep the external air intake grilles at the base
of the windscreen, the nozzles, the vents, the
air outlets and the air extractor in the boot
free from obstructions.
►

Do not cover the sunshine sensor located
on the dashboard; this sensor is used to
regulate the automatic air conditioning
system.
►


Operate the air conditioning system for at
least 5 to 10 minutes once or twice a month to
keep it in perfect working order

.
►

If the system does not produce cold air
,
switch it off and contact a CITROËN dealer or
a qualified workshop.
When towing the maximum load on a steep
gradient in high temperatures, switching off
the air conditioning increases the available
engine power, enhancing the towing capacity.
Avoid driving for too long with the ventilation off or with prolonged operation
of interior air recirculation. Risk of misting and
deterioration of the air quality!
If the interior temperature is very high
after the vehicle has stood for a long
time in the sunshine, air the passenger
compartment for a few moments.
Put the air flow control at a setting high
enough to quickly change the air in the
passenger compartment.
Condensation created by the air
conditioning results in a discharge of
water underneath the vehicle. This is perfectly
normal.
Servicing the ventilation and air
conditioning system
►

Ensure that the passenger compartment
filter is in good condition and have the filter
elements replaced regularly

.
We recommend using a composite passenger
compartment filter. Thanks to its special active
additive, this type of filter helps to purify the
air breathed by the occupants and keep the
passenger compartment clean (by reducing
allergic symptoms, unpleasant odours and
greasy deposits).
►

T

o ensure correct operation of the
air conditioning system, have it checked
according to the recommendations in the
Maintenance and Warranty Guide.
Stop & Start
The heating and air conditioning systems
only operate when the engine is running.
Temporarily deactivate the Stop & Start
system to maintain a comfortable temperature
in the passenger compartment.
For more information on the Stop & Start,
refer to the corresponding section.
Heating / Manual air
conditioning


The heating only operates when the engine is
running.

34
Ease of use and comfort
It allows you:
– lower the temperature, in summer,
– increase the effectiveness of the demisting in
winter, above 3°C.
► Press button 5 to activate/deactivate the air
conditioning system.
When the indicator lamp is on, the air
conditioning function is activated.
The air conditioning does not operate when the air flow adjustment is inhibited.
Ventilation function with the
ignition on
When the ignition is switched on, you can
use the ventilation system to adjust the air
flow settings and the air distribution in the
passenger compartment for a duration which
depends on the battery charge.
This function does not operate the air
conditioning.
Recirculation of interior air
The intake of exterior air helps avoid and
eliminate misting of the windscreen and side
windows.
Recirculating the interior air isolates the
passenger compartment from exterior odours
and fumes.
Temperature adjustment
► Press one of the buttons 2 to decrease (blue)
or increase (red) the value.
The value indicated corresponds to a level of
comfort and not to a precise temperature.
For maximum cooling or heating of the
passenger compartment, press the
temperature setting button down or up until
LO or HI is displayed.
Automatic comfort programme
► Press the “ AUTO“ button 7 to activate
or deactivate the automatic mode of the air
conditioning system.
The air conditioning system operates
automatically: the system manages the
temperature, air flow and air distribution in the
passenger compartment in an optimum way
according to the comfort level you have selected.
►

Go to the secondary page by pressing button
6

“OPTIONS ” to adjust the automatic comfort
programme by choosing one of the available
settings.
Mode AUTO► To change the current setting, press
the button several times in succession to
access the desired mode:
"Soft": provides soft and quiet operation by
limiting air flow.
"Normal": offers the best compromise between
a comfortable temperature and quiet operation
(default setting).
"Fast": provides strong and effective air flow.
This setting is associated with AUTO mode only.
However, on deactivation of AUTO mode, the
last selected setting remains.
Changing the setting does not reactivate AUTO
mode if deactivated.
In cold weather with the engine cold, the
air flow is increased gradually until the
comfort setting has been reached, in order to
limit the delivery of cold air into the passenger
compartment.
On entering the vehicle, if the interior
temperature is much colder or warmer
than the comfort setting requested, there
is no need to alter the value displayed in
order to reach more quickly the required
level of comfort. The system compensates
automatically and corrects the temperature
difference as quickly as possible.
You can manually adjust the air flow and distribution.
As soon as you modify a setting, the automatic
comfort programme is deactivated.
►

Press the “
AUTO“ button 7 to activate the
automatic comfort programme again.
Air flow adjustment
► Press one of the buttons 4 to increase or
decrease the air flow.
The air flow symbol (a fan) is filled in
progressively as the speed of the fan is
increased.
By reducing the air flow to minimum, you are
stopping ventilation.
"OFF " is displayed alongside the fan.
Avoid driving for too long without
ventilation - risk of misting and
deterioration of air quality!
Air distribution adjustment
You can vary the air distribution in the passenger
compartment using the buttons 3.
Windscreen.
Central and side vents.
Footwells.
Each press on a button activates or deactivates
the function.
The three buttons can be activated simultaneously. In this case, the flows of
air from the central and side vents and the
footwell vents are favoured.
Air conditioning On / Off
The air conditioning is designed to operate
efficiently in all seasons, with the windows
closed.

35
Ease of use and comfort
3It allows you:
– lower the temperature, in summer ,
–

increase the effectiveness of the demisting in
winter

, above 3°C.
►

Press button
5 to activate/deactivate the air
conditioning system.
When the indicator lamp is on, the air
conditioning function is activated.
The air conditioning does not operate when the air flow adjustment is inhibited.
Ventilation function with the
ignition on
When the ignition is switched on, you can
use the ventilation system to adjust the air
flow settings and the air distribution in the
passenger compartment for a duration which
depends on the battery charge.
This function does not operate the air
conditioning.
Recirculation of interior air
The intake of exterior air helps avoid and
eliminate misting of the windscreen and side
windows.
Recirculating the interior air isolates the
passenger compartment from exterior odours
and fumes.
When required, this function also allows
faster heating or cooling of the air in the
passenger compartment.
►

Press button
1 to recirculate the interior air or
allow the intake of exterior air.
Avoid prolonged use of interior air recirculation (due to the risk of misting
and deteriorating air quality).
System switch-off



► Press this button; the indicator lamp in the
button comes on.
This action switches off all of the functions of the
system.
T
emperature is no longer regulated. A slight flow
of air can still be felt, resulting from the forward
movement of the vehicle.
Pressing any button reactivates the system
with the settings that were in use before the
deactivation.
Avoid driving for long periods with the system off - risk of misting and
deterioration of air quality!
Front demisting
- defrosting




On / Off
► Press this button to demist or defrost the
windscreen and side windows as quickly as
possible.
The indicator lamp in the button comes
on.
The system automatically manages the air
conditioning (depending on version), air flow
and air intake, and provides optimum distribution
towards the windscreen and side windows.
►

T
o switch off demisting, press this button
again. The indicator lamp goes off.
With Stop & Start, when demisting
- defrosting has been activated, STOP
mode is not available.

67
Driving
6Driving recommendations
► Observe the driving regulations and remain
vigilant whatever the traffic conditions.
►

Monitor your environment and keep your
hands on the wheel to be able to react to
anything that may happen any time.
►


Drive smoothly
, anticipate the need for
braking and maintain a longer safety distance,
especially in bad weather.
►

Stop the vehicle to carry out operations that
require close attention (such as adjustments).
►


During long trips, take a break every two
hours.
Important!
Never leave the engine running in a
closed space without sufficient
ventilation. Internal combustion engines emit
toxic exhaust gases such as carbon
monoxide. Danger of poisoning and death!
In severe wintry conditions (temperature
below -23°C), let the engine run for 4
minutes before moving off, to ensure the
correct operation and durability of the
mechanical components of your vehicle
(engine and gearbox).
Never drive with the parking brake
applied . Risk of overheating and
damage to the braking system!
Do not park the vehicle or leave the
engine running on a flammable
surface (dry grass, dead leaves, etc.). The
exhaust system of your vehicle is very hot,
even several minutes after the engine stops.
Risk of fire!
Never leave a vehicle unattended with
the engine running. If you have to leave
your vehicle with the engine running, apply
the parking brake and put the gearbox into
neutral or position N or P (depending on the
type of gearbox).
Never leave children inside the vehicle
unsupervised.
On flooded roads
We strongly advise against driving on flooded
roads, as this could cause serious damage to
the engine or gearbox, as well as to the electrical
systems of your vehicle.


If you are obliged to drive on a flooded road:
► check that the depth of water does not
exceed 15 cm, taking account of waves that
might be generated by other users,
►

deactivate the Stop & Start function,
►


drive as slowly as possible without stalling. In
all cases, do not exceed 6 mph (10

km/h),
►

do not stop and do not switch off the engine.
On leaving the flooded road, as soon as safety
conditions allow

, make several light brake
applications to dry the brake discs and pads.
If in doubt about the state of your vehicle,
contact a CITROËN dealer or a qualified
workshop.
In case of towing
Driving with a trailer places greater
demands on the towing vehicle and
requires extra care from the driver.
Respect the maximum towable weights.
At altitude: reduce the maximum load by
10% per 1,000 metres of altitude; the density
of the air decreases with altitude and the
performance of the engine reduces.
New vehicle: do not pull a trailer before
having driven at least 620 miles (1,000
kilometres).
If the outside temperature is high, let the
engine idle for 1 to 2 minutes after the
vehicle comes to a stop, to help it to cool.

68
Driving
automatically to preserve the remaining battery
charge.
Starting the engine
With the parking brake applied:
► With a manual gearbox, place the gear lever
in neutral then fully depress the clutch pedal.
► With an automatic gearbox, place the gear
selector in mode N or P then fully depress the
brake pedal.
► Insert the key into the ignition switch; the
system recognises the code.
► Unlock the steering column by simultaneously
turning the steering wheel and the key.
In certain cases, you may have to apply
significant force to move the steering
wheel (wheels on full lock, for example).
► With a petrol engine , operate the starter
motor by turning the key to position 3 without
pressing the accelerator pedal, until the engine
starts. Once the engine starts, release the key.
With petrol engines , after a cold start,
preheating the catalytic converter can
cause noticeable engine vibrations for
anything up to 2 minutes while stationary with
the engine running (accelerated idle speed).
► With a Diesel engine, turn the key to position
2, ignition on, to operate the engine preheating
system.
Before setting off
Nose weight
► Distribute the load in the trailer so that the
heaviest items are as close as possible to the
axle and the nose weight (at the point where it
joins your vehicle) approaches the maximum
permitted without exceeding it.
Tyres
► Check the tyre pressures of the towing
vehicle and of the trailer , observing the
recommended pressures.
Lighting
► Check the electrical signalling on the trailer
and the headlamp beam height of your vehicle.
If a genuine CITROËN towing device is
used, the rear parking sensors will be
deactivated automatically to avoid the audible
signal.
When driving
Cooling
Towing a trailer uphill increases the temperature
of the coolant. The maximum towable load
depends on the gradient and the exterior
temperature. The cooling capacity of the fan
does not increase with engine speed.
►

Reduce speed and lower the engine speed,
so as to limit the heating-up. In all cases, pay attention to the coolant
temperature.
If this warning lamp and the
STOP
warning lamp come on, stop the vehicle
and switch off the engine as soon as possible.
Brakes
Braking distances are increased when towing a
trailer. To avoid overheating of the brakes, the
use of engine braking is recommended.
Side wind
Bear in mind the increased susceptibility to the
wind that the vehicle will have.
Anti-theft protection
Electronic immobiliser
The key contains an electronic chip which has a
special code. When the ignition is switched on,
this code must be recognised in order for starting
to be possible.
This electronic engine immobiliser locks the
engine management system a moment after
the ignition is switched off, and prevents
unauthorised engine starting.
In the event of a fault, you are informed
by illumination of this warning lamp, an
audible signal and a message in the screen.
In this case, your vehicle will not start; contact
a CITROËN dealer or a qualified workshop as
soon as possible.
Starting / Switching off the
engine with the key
Key ignition switch

It has 3 positions:
– 1. Stop: inserting and removing the key ,
steering column locked.
–

2. Ignition : steering column unlocked, ignition
on, Diesel preheating, engine running.
–


3. Starting
.
Avoid attaching heavy objects to the key or the remote control. It would weigh
down on its shaft in the ignition switch and
could cause a malfunction.
Ignition on position
It allows the use of the vehicle's electric
equipment or portable devices to be charged.
Once the state of charge of the battery drops to
the reserve level, the system switches to energy
economy mode : the power supply is cut off

69
Driving
6automatically to preserve the remaining battery
charge.
Starting the engine
With the parking brake applied:
► With a manual gearbox, place the gear lever
in neutral then fully depress the clutch pedal.
►

With an
automatic gearbox, place the gear
selector in mode N or P then fully depress the
brake pedal.
►

Insert the key into the ignition switch; the
system recognises the code.
►


Unlock
the steering column by simultaneously
turning the steering wheel and the key.
In certain cases, you may have to apply
significant force to move the steering
wheel (wheels on full lock, for example).
►

With a
petrol engine , operate the starter
motor by turning the key to position 3 without
pressing the accelerator pedal, until the engine
starts. Once the engine starts, release the key.
With petrol engines , after a cold start,
preheating the catalytic converter can
cause
noticeable engine vibrations for
anything up to 2 minutes while stationary with
the engine running (accelerated idle speed).
►

With a
Diesel engine, turn the key to position
2, ignition on, to operate the engine preheating
system.
Wait until this warning lamp goes off in the
instrument panel, then operate the starter
motor by turning the key to position 3 without
pressing the accelerator pedal, until the engine
starts. Once the engine starts, release the key.
In wintry conditions, the warning lamp
may stay on for a longer period. When
the engine is hot, the warning lamp does not
come on.
If the engine does not start straight away,
switch off the ignition. Wait a few
seconds before operating the starter motor
again. If the engine does not start after a few
attempts, do not keep trying - risk of
damaging the starter motor and the engine.
Contact a CITROËN dealer or a qualified
workshop.
In mild conditions, do not leave the
engine at idle to warm up but move off
straight away and drive at moderate speed.
Switching off the engine
► Immobilise the vehicle.
► With the engine at idle, turn the key to
position 1
.
►

Remove the key from the ignition switch.
►


T
o lock the steering column, turn the steering
wheel until it locks.
To facilitate unlocking of the steering column, it is recommended that the
wheels be returned to the straight ahead
position before switching off the engine.
Never switch off the ignition before the
complete immobilisation of the vehicle.
With the engine off, the braking and steering
assistance systems are also cut off - risk of
loss of control of the vehicle!
Check that the parking brake is correctly
applied, particularly on sloping ground.
When leaving the vehicle, keep the key in
your possession and lock the vehicle.
Energy economy mode
After the engine has stopped (position 1. Stop),
for a maximum combined duration of about thirty
minutes, you can still use functions such as the
audio and telematics system, courtesy lamps,
windscreen wipers, dipped beam headlamps,
etc.
For more information on Energy
economy mode, refer to the
corresponding section.
Key left in
When opening the driver's door, an alert
message is displayed, accompanied by an

70
Driving
Switching on the ignition
without starting the engine


With the electronic key in the passenger
compartment, pressing the “START/STOP”
button, without pressing any of the pedals ,
allows the ignition to be switched on without
starting the engine (turning on the instrument
panel and accessories such as the audio system
and the lighting).
► Press this button again to switch off the
ignition and allow the vehicle to be locked.
Key not detected
Back-up starting
A back-up reader is fitted underneath the
parking brake lever so that the engine can be
started if the system does not detect the key
in the recognition zone, or if the battery in the
electronic key is flat.

audible signal, to remind you that the key is
still in the ignition switch at position 1 (Stop).
If the key has been left in the ignition switch
at position 2 (Ignition on) , the ignition will be
switched off automatically after one hour.
To switch the ignition back on, turn the key
to position 1 (Stop), then back to position 2
(Ignition on) .
Starting / Switching off the
engine with Keyless Entry
and Starting
The electronic key must be present in the
passenger compartment.
If it is not detected, a message is displayed.
Move the electronic key so that the engine
can be started or switched off.
If there is still a problem, refer to the "Key
not detected - Back-up starting or Back-up
switch-off" section.
Starting

► With a manual gearbox, place the gear lever
in neutral and fully depress the clutch pedal.
►

With an
automatic gearbox, select mode P
or
N and press the brake pedal.


► Press the " START/STOP" button while
maintaining pressure on the pedal until the
engine starts.
For Diesel engines, when the temperature is
below zero and/or the engine is cold, starting will
only occur once the preheating warning lamp is
off.
If this warning lamp comes on after
pressing the " START/STOP" button:
►

Keep the pedal fully depressed and do not
press the "

START/STOP" button again until the
engine is running.
If one of the starting conditions is not met, a
message is displayed.
In some circumstances, a message indicates
that it is necessary to turn the steering wheel
while pressing the " START/STOP" button to
assist unlocking of the steering column.
With petrol engines , after a cold start,
preheating the catalytic converter can
cause noticeable engine vibrations for
anything up to 2 minutes while stationary with
the engine running (accelerated idle speed).
Switching off
► Immobilise the vehicle, with the engine at
idle.
►

With a
manual gearbox, ideally put the gear
lever into neutral.
►

With an
automatic gearbox, ideally select
mode
P or N.
►

Press the "
START/STOP" button..
In some circumstances, it is necessary to turn
the steering wheel to lock the steering column.
If the vehicle is not immobilised, the
engine will not switch off.
With the engine off, the braking and
steering assistance systems are also cut
off - risk of loss of control of the vehicle!
Never leave your vehicle with the
electronic key still inside.

173
Alphabetical index
G
Gauge, fuel 94–95
Gearbox, automatic
72, 74–75, 77, 103
Gearbox, manual

37, 39, 72, 75, 77, 103
Gear lever, manual gearbox

72
Gear shift indicator ~ Gear efficiency
indicator

74
Glove box

37–38
G.P.S.

154
H
Hazard warning lamps 49, 108
headlamp adjustment
44
Headlamp adjustment

44
Headlamps, automatic illumination

43
Headlamps, dipped beam

42, 116
Headlamps, halogen

11 5
Headlamps, main beam

42, 116
Head restraints, front

28
Head restraints, rear

31
Heating

31–34
Hill start assist

75
Hooks

40
Horn

50
I
Ignition 35, 71, 164
Ignition on 71
Ignition switch
68–69
Immobiliser, electronic

21, 68
Indicator, AdBlue® range

12
Indicator, engine oil level

11–12
Indicator lamps, operation

42
Indicators, direction

43
Inflating tyres

103, 131
Inflating tyres and accessories
(using the kit)

108–109, 111
Infrared camera

79
Instrument panel

7, 79
Internet browser

158
ISOFIX mountings

62
J
Jack 111–112, 161
Jump starting
122
K
Key 17–19, 21–22
Key, electronic
19–20
Keyless Entry and Starting

19–21, 70
Key not recognised

71
Key with remote control

17–18, 68
Kit, hands-free

140–141, 163
Kit, puncture repair

109
Kit, temporary puncture
repair
40, 108–109, 111
L
Labels, identification 130
Lamp, boot
37, 118
Lamps, parking

43
Lamps, rear

11 7
Lane Departure Warning System (LDWS)

89
LEDs - Light-emitting diodes

44, 116
Level, AdBlue®

102
Level, brake fluid

101
Level, Diesel additive

102–103
Level, engine coolant

101
Level, engine oil

11–12, 101
Levels and checks

100–102
Level, screenwash fluid

46, 102
Light-emitting diodes - LEDs

44, 116, 118
Lighting

42
Lighting dimmer

16
Lighting, directional

45
Lighting, exterior

42
Lighting, guide-me home

44
Load reduction mode

97
Locating your vehicle

18
Locking

18, 21
Locking from the inside

20
Locking the doors

20–21
Low fuel level

94–95
Lumbar

27