sensor Citroen C4 AIRCROSS RHD 2017 1.G User Guide
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Under-inflation alert
The alert is given by the fixed 
illumination of this warning lamp and 
the display of a message.
F
 
R
educe speed immediately, avoid sudden 
steering movements or harsh brake 
applications.
F
 
S
top as soon as it is safe to do so. The loss of pressure detected does not 
always lead to visible deformation of the 
tyre. Do not rely on just a visual check. The alert is maintained until the 
reference pressure is reinitialised after 
the inflation, repair or replacement of 
the tyres concerned. In the event of 
the repair or replacement of tyres, the 
sensor identifiers must be registered in 
the system by a CITROËN dealer or a 
qualified workshop.
The spare wheel does not have 
a sensor, so there is no need to 
reinitialise the system for driving with 
the spare wheel fitted.
F
 I f you have a compressor (the one in the 
temporary puncture repair kit, for example), 
check the four tyre pressures when cold.
 I
f it is not possible to check the tyre 
pressures immediately, drive carefully at 
reduced speed.
 
or
F
 
I
 n the event of a puncture, use the 
temporary puncture repair kit or the spare 
wheel (depending on equipment).
Reinitialising the reference 
pressure
Before reinitialising the system, ensure 
that the pressures in the four tyres are 
suitable for the conditions of use of the 
vehicle and are as specified on the tyre 
pressure label.
The under-inflation detection system 
cannot warn of an incorrect pressure at 
the time of reinitialisation.
The system must be reinitialised after any 
adjustment of tyre pressures and after 
changing one or more wheels. 
4 
Driving  
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The reinitialisation instruction is entered in 
the screen menu, with the ignition in the "ON" 
position and the vehicle stationary.
F Press several times on the INFO  button, 
located below the instrument panel to the 
left of the steering wheel.
F
  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:
-
 
a
 t least one wheel 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, after a puncture, to have the original 
wheel, equipped with a sensor, refitted. 
Driving  
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Parking sensors
This function cannot, in any 
circumstances, take the place of the 
vigilance of the driver.
Rear parking sensors
This system indicates the proximity of an 
obstacle (person, vehicle, tree, gate, etc.) 
which comes within the field of detection of 
sensors located in the bumper.
Certain types of obstacle (stake, roadworks 
cone, etc.) detected initially will no longer be 
detected at the end of the manoeuvre due to 
the presence of blind spots.
Audible assistance
The proximity information is given by an 
intermittent audible signal, whose frequency 
increases as the vehicle approaches the 
obstacle.
Below a certain distance between the vehicle 
and the obstacle, the audible signal becomes 
continuous.
The system is switched on by engaging reverse 
gear. This is accompanied by an audible signal.
The indicator lamp in the button comes on to 
confirm that the system is active.
The system is deactivated when you come out 
of reverse gear. 
4 
Driving  
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Visual assistance
Front parking sensors
Deactivation / Activation of the 
front and rear parking sensors
The function is deactivated by pressing this 
button. The indicator lamp in the button 
goes  off.
Pressing this button again reactivates the 
function. The indicator lamp in the button 
comes on.
Operating fault
The front parking sensors are triggered when 
an obstacle is detected in front, a gear is 
engaged (position  D for vehicles with a CVT 
gearbox) and the speed of the vehicle remains 
below 6 mph (10 km/h).
The front parking sensors are interrupted if 
the vehicle stops for more than five seconds 
in for ward gear, if no further obstacles are 
detected or when the speed of the vehicle 
exceeds 6 mph (10 km/h). Remember to deactivate the system if 
towing a trailer or caravan.In bad weather or in winter, ensure that 
the sensors are not covered with mud, 
ice or snow.
When the vehicle is moving at a speed 
below 6 mph (10 km/h), certain sound 
sources (motorcycle, lorry, pneumatic 
drill, etc.) may trigger the audible 
signals of the parking sensor system.
In the event of an problem, when reverse gear 
is engaged this lamp in the button flashes, 
accompanied by an audible signal.
This supplements the audible 
signal by displaying bars in the 
screen, in front of or behind the 
vehicle. If one of the sensors is faulty, it 
flashes in the instrument panel 
screen.
Contact a CITROËN dealer or a qualified 
workshop.
These bars flash at the start of the manoeuvre 
then become fixed from a certain distance 
between the vehicle and the obstacle. 
4 
Driving  
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Reversing camera
Linked with the navigation option, the reversing 
camera complements the parking sensor 
system and is activated automatically when 
reverse gear is engaged.The image from the camera is displayed in the 
navigation screen.
The zone (A)
 
represents the upper part of the 
rear bumper.
The red line represents the distance of 50 cm 
from the edge of the rear bumper.
The green lines represent the width of the 
vehicle increased by 20 cm on each side.
The marks on the green lines correspond to the 
edges of the rear bumper (B), then the distance 
of 1 metre from the edge of the rear bumper (C)  
and 2 metres (D) . In no circumstances can the reversing 
camera replace the need for vigilance 
on the part of the driver.
Clean the reversing camera from time 
to time using a soft dry cloth.
High pressure jet wash
When washing your vehicle, do not 
direct the lance to within 30 cm of the 
camera lens. 
Driving  
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In foggy weather or in snow, the 
sunshine sensor may detect sufficient 
light. The lighting will not come on 
automatically.
Do not cover the sunshine sensor, the 
associated functions will no longer be 
controlled.
Automatic switching off
When the lighting control stalk is at "dipped or 
main beam headlamps", if the ignition switch 
is at "LOCK" or "ACC" or if the key has been 
removed from the ignition switch, the lamps 
switch off automatically when the driver's 
door is opened.
Daytime running lamps
Daytime lighting which comes on automatically 
when the engine is started making the vehicle 
more visible to other users.
This function is assured by special lamps.
The lighting control stalk must be placed in 
position "0" or "AUTO" (day mode).
Automatic illumination of headlamps
The sidelamps and the dipped beam headlamps 
come on automatically, without any action on the 
part of the driver, if a low level of exterior light is 
detected or if the wipers are switched on.
When the light returns to a sufficient level or the 
wipers are switched off, the lighting is switched off 
automatically.
The sensor is located at the base of the windscreen.
Contact a CITROËN dealer or a qualified workshop 
to adjust the sensitivity of the sensor. 
Lighting and visibility  
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Manual controls
Windscreen wipers
B. intermittent operation or rain sensor sensitivity adjustment ring.
Windscreen wash
Pull the wiper stalk towards you. The 
windscreen wash then the wipers operate for a 
set time.
The headlamp wash is also activated if the 
dipped beam headlamps are on .
Headlamp wash
Press the end of the lighting stalk to activate 
the headlamp wash, when the dipped beam 
headlamps are on.
single wipe.
park.
intermittent (the speed can be set 
manually).
or
automatic rain sensitive wipers  
(the speed can be set manually).
slow.
fast.
A.
 w
iping speed selection stalk:
You can increase or decrease:
-
 
t
he wiping frequency when the intermittent 
mode is active,
-
 t
he sensitivity of the rain sensor when the 
automatic mode is active.
-
 
"
+": high sensitivity.
-
 
"
-": low sensitivity. To reduce the consumption of 
screenwash fluid, the headlamp 
washers only operate with the first 
operation of the screenwash. 
5 
Lighting and visibility  
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Automatic rain sensitive 
wipers
Operating fault
Do not cover the rain sensor, linked with the 
sunshine sensor and located in the centre of 
the windscreen behind the rear view mirror.
Activation
F Move the stalk A to the "AUTO" p osition. Switch off the automatic rain sensitive 
wipers when using an automatic car 
wash.
To protect the rubber of the wiper, it is 
advisable to deactivate the automatic 
mode when the vehicle is parked and 
when the exterior temperature is below 
0 °C.
In winter, it is advisable to wait until 
the windscreen is completely clear of 
ice before activating the automatic rain 
sensitive wipers.
Deactivation
F Move the stalk A to the "OFF"  position.
The windscreen wipers operate automatically, 
without any action on the part of the driver, if 
rain is detected (sensor behind the rear view 
mirror), adapting their speed to the intensity of 
the rainfall. 
Lighting and visibility  
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Advice on driving when towing
Distribution of loads
F Distribute the load in the trailer so that the heaviest items are as close as possible to 
the axle and the nose weight approaches 
the maximum permitted without 
exceeding
  it.
Air density decreases with altitude, 
thus
  reducing engine per formance. Above 
1
  000 metres, the maximum towing load must 
be reduced by 10
  % of the GTW and so on for 
every 1
  000 metres of altitude.
For more information on Petrol weights  or 
Diesel weights  and in particular the towed 
loads which apply to your vehicle, refer to the 
corresponding section.
Side wind
F Take into account the increased sensitivity  to side wind.
Cooling
Towing a trailer on a slope increases the 
temperature of the coolant.
As the fan is electrically controlled, its cooling 
capacity is not dependent on the engine speed.
F
 
T
 o lower the engine speed, reduce your 
speed.
The maximum towed load on a long slope 
depends on the gradient and the exterior 
temperature.
In all cases, pay attention to the coolant 
temperature.
F
 
I
 f this message is displayed, stop your 
vehicle as soon as it is safe to do so.
Braking
Towing a trailer increases the braking distance.
To limit heat build-up in the brakes, use of the 
engine brake is recommended.
Ty r e s
F Check the tyre pressures of the towing  vehicle and of the trailer, observing the 
recommended pressures.
Lighting
F Check the lighting and signalling on the trailer and the adjustment of the vehicle's 
headlamps.
For more information on Headlamp 
adjustment , refer to the corresponding 
section.
If the message flashes slowly, wait for the 
engine to cool before topping up the level, if 
necessary.
If the message flashes rapidly, contact a 
CITROËN dealer or a qualified workshop 
without delay.
The rear parking sensors will be 
deactivated automatically when a 
genuine CITROËN towbar is used. 
Practical information  
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Dashboard fuses
The fusebox is located in the lower dashboard 
(left-hand side).
Access to the fuses
F Unclip the cover and remove it completely by pulling it towards you. Fuse N°
Rating Functions
1 * 30 ACabin fan.
2 15 ABrake lamps, third brake lamp.
3 10 ARear foglamps.
4 30 AWindscreen wiper, screenwash.
6 20 ACentral locking, electric door mirrors.
7 15 AAudio equipment, telematics, USB unit, hands-free system.
8 7. 5  ARemote control key, air conditioning control unit, instrument 
panel, electric windows, rain and sunshine sensors, alarm, 
switch panel, steering mounted controls.
9 15 AInstrument panel and interior lighting.
10 15 AHazard warning lamps.
11 15 ARear wiper.
12 7. 5  AInstrument panel, multifunction screen, parking sensors, 
heated seats, heated rear screen, electric blind, automatic 
headlamp adjustment.
13 15 ACigarette lighter, accessory socket.
15 20 AElectric blind.
16 10 ADoor mirrors, audio equipment. 
In the event of a breakdown