brakes CITROEN C5 AIRCROSS 2019 Owners Manual

17
Engine self-
diagnostic
systemFlashing.
The engine management system has
a
fault.There is a risk that the catalytic converter will be destroyed.
C arry out (2) without fail .
Fixed. The emission control system has
a
fault.The warning lamp should go off when the engine is started.
Carry out (3) quickly.
Warning/indicator lamp StateCause Actions/Observations
Collision Risk
Alert/Active
Safety Brake Flashing.
The system is operating. The vehicle brakes briefly so as to reduce the speed
of frontal collision with the vehicle ahead.
Fixed, accompanied
by a
message and an
audible signal. The system has a
fault.Carry out (3).
Collision Risk
Alert/Active
Safety Brake Fixed, accompanied
by the display of
a


message.The system has been deactivated, via
the vehicle configuration menu.
Active Lane
Departure
Warning System Fixed.
The system has been automatically
deactivated or placed on standby.
Flashing. You are about to cross a
broken
lane marking without operating the
direction indicators. The system is activated, then corrects the trajectory
on the side of the lane marking detected.
+ Active Lane
Departure
Warning System
Fixed.
The system has a
fault.Carry out (3).
1
Instruments

92
Emergency braking assistance
(EBA)
In an emergency, this system enables you to
reach the optimum braking pressure more
quickly and therefore reduce the stopping
distance.
It is triggered in relation to the speed at which
the brake pedal is pressed. This is felt by
a reduction in the resistance of the pedal and
an increase in braking efficiency.
Anti-slip regulation (ASR)
This system optimises traction in order to
avoid wheel slip by acting on the brakes of
the driving wheels and on the engine. It also
improves the directional stability of the vehicle
on acceleration.
Dynamic stability control (DSC)
If there is a difference between the path
f ollowed by the vehicle and that required by the
driver, this system monitors each wheel and
automatically acts on the brake of one or more
wheels and on the engine to return the vehicle
to the required path, within the limits of the laws
of physics.
Trailer stability assist (TSA)
This system allows control of the vehicle to be
retained when towing a trailer, so as to avoid
the risk of snaking.
Anti-lock braking system
(ABS) and electronic brake
force distribution (EBFD)
The fixed illumination of this warning
lamp signals that there is a fault with
the ABS.
Illumination of this warning lamp,
coupled with the STOP and ABS
warning lamps, accompanied by the
display of a
message and an audible
signal, signals that there is a
fault
with the electronic brake force
distribution (EBFD). Normal operation of the ABS may make
itself felt by slight vibrations of the brake
pedal.
When braking in an emergency, press
very firmly and maintain this pressure.
When changing wheels (tyres and rims),
ensure that these are approved for your
vehicle.
After an impact, have these systems
checked by a
CITROËN dealer or
a


qualified workshop.
Intelligent traction control
system ("Snow motion ")
The vehicle retains conventional braking. Drive
carefully at moderate speed.
Contact a
CITROËN dealer or a qualified
workshop as soon as possible.
You must stop as soon as it is safe to do so.
Call a
CITROËN dealer or a qualified
workshop. Depending on version, your vehicle has
a
system to help driving on snow: intelligent
traction control.
This system detects situations of poor sur face
grip that could make it difficult to move off
or make progress on deep fresh snow or
compacted snow.
In these situations, the intelligent traction
control limits the amount of wheel spin to
provide the best traction and trajectory control
for your vehicle.
Safety

94
ASR/DSC
These systems offer increased safety
in normal driving, but they should not
encourage the driver to take extra risks or
drive at high speed.
It is in conditions of reduced grip (rain,
snow, ice) that the risk of loss of grip
increases. It is therefore important for your
safety to keep these systems activated in
all conditions, and particularly in difficult
conditions.
The correct operation of these
systems depends on obser vation of
the manufacturer's recommendations
regarding both the wheels (tyres and
rims), braking and electronic components
and the assembly and repair procedures
used by CITROËN dealers.
The use of snow tyres is recommended,
in order to be able to benefit from the
efficiency of these systems in winter
conditions.
In this case, it is essential to equip the
four wheels with tyres approved for your
vehicle.Trailer stability assist (TSA)
When towing, this system reduces the risk of
the vehicle or trailer swaying.
Operation
The system is activated automatically when the
ignition is switched on.
The electronic stability control (ESC) must not
have any faults.
If the system detects oscillations (snaking) in
the movement of the trailer at speeds between
37 and 99 mph (60 and 160 km/h), it acts
on the brakes to stabilise the trailer and, if
necessary, reduces the engine power to slow
down the vehicle.
The correction is signalled by the
flashing of this warning lamp in the
instrument panel and illumination of
the brake lamps.
For information on the weights and towed
loads, refer to the "Technical data" section or
the registration certificate for your vehicle.
To ensure complete safety while driving with
a
To w b a r d e v i c e , refer to the corresponding
section.
Operating fault
Should a fault occur with the system,
t his warning lamp comes on in the
instrument panel, accompanied by
the display of a
message and an
audible signal.
The trailer stability assist system offers
increased safety in normal driving,
provided that the recommendations on
towing a
trailer are obser ved. It should not
encourage the driver to take risks, such
as towing a
trailer in adverse operating
conditions (overloading, failure to obser ve
the trailer nose weight, worn or under-
inflated tyres, faulty braking system, etc.)
or drive at too high a
speed.
In certain cases, snaking of the trailer
may not be detected by the ESC system,
particularly with a


light trailer.
When driving on slippery or poor sur faces,
the system may not be able to prevent
sudden snaking of the trailer.
If you continue to tow a
trailer, reduce your
speed and drive carefully!
Contact a
CITROËN dealer or a qualified
workshop to have the system checked.
Safety

96
You can deactivate the ASR
and DSC systems by turning
the knob to the "OFF" position.
Recommendations
Your vehicle is designed principally to
drive on tarmac roads but it allows you to
occasionally drive on other less passable
terrain.
However, it does not permit off-road
driving such as:
-

c

rossing and driving on terrain which
could damage the underbody or strip
away components (fuel pipe, fuel
cooler, etc.) due to obstacles or stones
in particular,
-

d

riving on terrain with steep gradients
and poor grip,
-

c

rossing a stream.Hill Assist Descent
Control
System that provides assistance when
descending on loose or soft sur faces (gravel,
mud, etc.) or a steep gradient.
This system reduces the risk of slip or loss
of control of the vehicle when descending,
whether going forward or in reverse.
During a
descent, it assists the driver in
maintaining a


constant speed, depending
on the gear engaged, while progressively
releasing the brakes.
For the system to activate, the slope must
be greater than 5%.
The system can be used with the gearbox
in neutral.
Otherwise engage a


gear corresponding
to the speed to prevent the engine stalling.
With an automatic gearbox, the system
can be used with the selector at N , D or R.
When the system is regulating, the Active
Safety Brake system is automatically
deactivated. The system is not available:
-

i
f the speed of the vehicle is above
43 mph (70 km/h),
- i f the speed of the vehicle is being
controlled by the Adaptive Cruise
Control, depending on the type of
gearbox.
Operation
Switching on
By default, the system is not selected.
The state of the function is not saved when the
ignition is switched off.
The driver can select the system when
the engine is running, when the vehicle is
stationary or when moving at speeds up to
approximately 31
mph (50 km/h).
The ASR and DSC systems will no longer
act on the engine operation or the brakes
in the event of an involuntary change of
trajectory.
These systems are reactivated
automatically from 31

mph (50

km/h) or
every time the ignition is switched on.
With instrument panels with dialsF

T
o select the system, at a speed
below 31
mph (50 km/h), press
this button until its indicator lamp
comes on; up; this indicator lamp
appears in green in the instrument
panel.
Safety

97
F When the vehicle begins its descent, you can release the accelerator and brake
pedals; the system regulates the speed:
The system becomes active at a
speed below
19 mph (30 km/h).
With digital instrument panel
F
T
o select the system, at a speed
below 31 mph (50 km/h), press
this button until its green indicator
lamp comes on; this indicator lamp
comes on in grey in the instrument
panel.
F
T
he system becomes active at
a speed below 19 mph (30 km/h);
this indicator lamp comes on in
green in the instrument panel.
-
i
f the gearbox is in first or second
gear, the speed decreases and the
indicator lamp flashes rapidly,
-

i
f the gearbox is in neutral or if
the clutch pedal is depressed, the
speed decreases and the indicator
lamp flashes slowly; in this case,
the maintained descent speed is
l o w e r. On a
descent, with the vehicle stationary, if you
release the accelerator and brake pedals, the
system will release the brakes to set the vehicle
gradually in motion.
The brake lamps light up automatically when
the system is regulating.
If the speed exceeds 19 mph (30 km/h),
regulation is paused automatically, the indicator
lamp goes back to grey in the instrument panel,
but the green indicator lamp in the button
remains on.
Regulation resumes automatically when the
speed falls below 19 mph (30 km/h) again, if the
slope and pedal release conditions are met.
You can depress the accelerator or brake pedal
again at any time.
Switching off
Malfunction
If a fault occurs with the system, a message is
d isplayed in the instrument panel.
F

P

ress this button until its indicator lamp
goes off; the indicator lamp also goes off in
the instrument panel.
Above 43

mph (70

km/h), the system is
automatically deactivated; the indicator lamp in
the button goes off. Have it checked by a
CITROËN dealer or
a


qualified workshop.
Seat belts
Front seat belts
The front seat belts are fitted with a pyrotechnic
p retensioning and force limiting system.
5
Safety

117
In case of towing
Driving with a trailer places greater
d emands 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
decreased air density at altitude reduces
engine performance.
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.
Before setting off
Nose weight
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.
F

D
istribute 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.
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 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
t emperature 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.
F

R
educe 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.
6
Driving

127
With the engine running and the brakes
released, if R, D or M is selected, the
vehicle moves off, even without pressing
the accelerator pedal.
Never press the accelerator and brake
pedals at the same time – risk of damage
to the gearbox!
In the event of a
battery failure, you
must place the chocks supplied with the
vehicle tools against one of the wheels to
immobilise the vehicle.
Unlocking the gearbox
- From mode P :
F f ully depress the brake pedal,
F
press the Unlock button,
F

w
hile continuing to press the brake pedal
and the Unlock button, select another
mode.
-

F
rom neutral N , at a
speed below 3 mph
(5


km/h):
F

f
ully depress the brake pedal,
F

w
hile continuing to press the brake pedal,
select another mode.
Engaging reverse gear
F Slow down until you come to a stop.
F W ith your foot on the brake pedal, press the
Unlock button.
F

W
hile maintaining the presses, select
mode R .
Manual mode
Switching to the mode:
F
w ith mode D selected in advance,
F

p
ress button M ; the green indicator lamp in
the button comes on.
Exiting the mode:
F

p
ush for wards once to return to D .
or
F

p
ress button M ; the indicator lamp in the
button goes off.
Switching off the ignition
To switch off the ignition, the vehicle must be
stationary.
Changing to free-wheeling
To put the vehicle in free-wheeling mode, with
the engine switched off:
F

w
ith the vehicle stationary and the engine
running, select N ,
F

s
witch off the engine,
F

w
ithin 5 seconds, switch the ignition on
again,
F

w
ith your foot on the brake pedal, push the
selector for ward or back once to confirm N
and manually release the electric parking
brake,
F

s
witch off the ignition.
After this time limit, the gearbox engages mode
P ; it is then necessary to restart the procedure. If you open the driver's door while mode N
is engaged, an audible signal will sound. It
will stop when you close the driver's door
again.
Special aspects of automatic
mode
The gearbox selects the gear that offers
optimum per formance, taking account of the
exterior temperature, the profile of the road, the
load on the vehicle and the style of driving.
For maximum acceleration without touching the
selector, push the accelerator to the floor (kick-
down). The gearbox shifts down automatically
or holds the gear selected until the maximum
engine speed is reached.
The steering mounted controls allow the driver
to temporarily select a
gear, if the road and
engine speed permit.
Special aspects of manual mode
The change from one gear to another takes
place only if the road speed and engine speed
permit.
6
Driving

158
Collision Risk Alert
It warns the driver if their vehicle is at risk of
collision with the vehicle in front or a pedestrian
present in their traffic lane.
Modifying the alert trigger
threshold
This threshold determines how you wish
to be alerted of the presence of a moving
or stationary vehicle in front of you, or
a
pedestrian or cyclist present in your traffic
lane.
The current threshold can be
modified via the Driving /Vehicle
menu of the touch screen.
You can select one of three predefined
thresholds:
-
"Distant ",
-
"Normal ",
-
"Close ".
The last threshold selected is memorised when
the ignition is switched off.
Operation
Depending on the degree of risk of collision
detected by the system and the alert threshold
chosen by the driver, several different levels
of alert may be triggered and displayed in the
instrument panel.
They take account of the vehicle dynamics, the
speed of your vehicle and the one in front, the
environmental conditions and the operation of
the vehicle (cornering, actions on the pedals,
etc.) to trigger the alert at the best moment.
Level 1 (orange) : visual alert only,
signalling to you that the vehicle in
front is very close.
The " Vehicle close " message is
displayed.
Level 2 (red) : visual and audible
alert, warning you that a
collision is
imminent.
The message " Brake!" is displayed.
Level 3 : finally, in some cases, a
haptic alert in the form of micro-
braking can be given, confirming the
risk of collision. Where the speed of your vehicle is too
high when approaching another vehicle,
the level 2
alert may be displayed
immediately.
Important: the level 1
alert is never
displayed for a
stationary obstacle or
when the " Close" trigger threshold has
been selected.
Intelligent emergency
braking assistance
If the driver brakes, but not sufficiently to avoid
a collision, this system will supplement the
braking, within the limits of the laws of physics.
This assistance will only be provided if you
press the brake pedal.
After an impact, the function automatically
stops operating. Contact a

CITROËN
dealer or a

qualified workshop to have the
system checked.
Driving

159
Active Safety Brake
Operation
- The vehicle's speed does not exceed 50 mph (80 km/h) when a stationary vehicle
or a
cyclist is detected.
-

T
he vehicle's speed is above 6 mph
(10
km/h) (versions with camera and radar)
or between 6
mph and 53 mph (10 km/h and
85
km/h) (versions with camera alone) when
a
moving vehicle is detected.If the camera and/or radar have
confirmed the presence of a
vehicle,
a pedestrian or a
cyclist, this
warning lamp flashes (for about
10
seconds) when the function is
acting on the vehicle's brakes.
With an automatic gearbox, in the event of
automatic emergency braking until the vehicle
comes to a
complete stop, keep the brake
pedal pressed down to prevent the vehicle from
starting off again.
With a
manual gearbox, in the event of
automatic emergency braking until the vehicle
comes to a
complete stop, the engine may stall.
The driver can control the vehicle at any
time by making a
deliberate movement
of the steering wheel and/or pressing the
accelerator pedal. Operation of the function may be felt by
slight vibration in the brake pedal.
If the vehicle comes to a
complete stop,
the automatic braking is maintained for
1
to 2 seconds.
Malfunction
In the event of a fault with the
s ystem, you are alerted by the
continuous illumination of this
warning lamp, accompanied by the
display of a
message and an audible
signal.
Contact a
CITROËN dealer or
a
qualified workshop to have the
system checked.
This function, also called automatic emergency
braking, inter venes following the alert if the
driver does not react quickly enough and does
not operate the vehicle's brakes.
It aims to reduce the speed of impact or avoid
a

frontal collision by your vehicle where the
driver fails to react.
The system operates under the following
conditions:
-

T

he vehicle's speed does not exceed
37

mph (60

km/h) when a

pedestrian is
detected.
Fatigue detection system
Refer to the General recommendations on
the use of driving and manoeuvring aids .
Take a
break as soon as you feel tired or at
least every two hours.
The function comprises the "Coffee Break
Alert" system combined with the "Driver
Attention Alert" system.
6
Driving

161
The following situations may interfere with
the operation of the system or prevent it
from working:
-
p
oor visibility (inadequate lighting of
the road, falling snow, heavy rain,
dense fog, etc.),
-

d
azzle (headlamps of an oncoming
vehicle, low sun, reflections on a
damp
road, leaving a
tunnel, alternating
shade and light, etc.),
-

w
indscreen area located in front of the
camera: dirty, misted up, frost-covered,
snow-covered, damaged or covered by
a


s t i c ke r,
-
l

ane markings absent, worn, hidden
(snow, mud) or multiple (roadworks,
e t c .),
-

c
lose to the vehicle ahead (lane
markings not detected),
-

r
oads that are narrow, winding, etc.
Active Lane Departure
Warning System
Refer to the General recommendations on
the use of driving and manoeuvring aids .Using a
camera located at the top of the
windscreen to identify lane markings on the
road and at the edges of the road (depending
on version), the system corrects the trajectory
of the vehicle while alerting the driver if it
detects a risk of unintentionally crossing a line
or hard shoulder (depending on version).
This system is particularly useful on motor ways
and main roads.
Conditions for operation
The speed of the vehicle must be between
40 and 112 mph (65 and 180 km/h).
The driver must hold the wheel with both
hands.
The change of trajectory must not be
accompanied by operation of the direction
indicators.
The ESC system must not be faulty.
The ASR /DSC systems must be activated.
The system helps the driver only when
there is a
risk of the vehicle involuntarily
wandering from the lane it is being driven
in. It does not manage the safe driving
distance, the speed of the vehicle or the
brakes.
Operation
Once the system identifies a risk of the vehicle
i nvoluntarily crossing one of the lane markings
detected, it makes the correction to the
trajectory required to return the vehicle to its
initial path.
The driver will notice a
turning movement of the
steering wheel.
This warning lamp flashes during
trajectory correction.
The driver can prevent the correction by
keeping a
firm grip on the wheel (during
an avoiding manoeuvre, for example).
The correction is interrupted if the
direction indicators are operated.
If the system detects that the driver is not
holding the wheel firmly enough during
an automatic correction of trajectory,
it interrupts the correction. An alert is
triggered to encourage the driver to take
back control of the vehicle.
6
Driving