engine CITROEN C5 AIRCROSS 2020 Handbook (in English)

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

95
Advanced Grip Control
Special patented traction control system which
improves traction on snow, mud and sand.
This system, the operation of which has been
optimised for each situation, allows you to
manoeuvre in most conditions of poor grip
(encountered during touring use).
Associated with all-season M+S (Mud and
Snow) tyres, this system offers a compromise
between safety, adhesion and traction.
The accelerator pedal should be pressed
sufficiently to allow the system to use the power
of the engine. Operation at high engine speeds
is completely normal.
A five-position selector knob allows you to
choose the setting best suited to the driving
conditions encountered.
An indicator lamp associated with each mode
comes on, accompanied by the display of
a
message to confirm your choice.
Operating modes
Standard (ESC)
This mode is calibrated for a low
l evel of wheel spin, based on the
different levels of grip normally
encountered on the road.
Every time the ignition is switched off, the
system automatically resets to this mode.
Snow
This mode adapts its strategy to
the conditions of grip encountered
for each of the two front wheels on
moving off.
(mode active up to 50
mph
(80


km/h))
All terrain (mud, damp grass,
etc.)
This mode, when moving off, allows
considerable spin on the wheel with
the least grip to optimise clearing of
the mud and to regain grip. At the
same time, the wheel with the most
grip is controlled in such a way
as to transmit as much torque as
possible.
When moving, the system optimises wheel spin
to respond to the driver's requirements as fully
as possible.
(mode active up to 31
mph (50 km/h))
Sand
This mode allows little spin on the
two driving wheels at the same time
to allow the vehicle to move for ward
and limit the risks of getting stuck in
the sand.
(mode active up to 75 mph
(120


km/h))
Do not use the other modes on sand as
the vehicle may become stuck.
5
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

116
Driving recommendations
F Observe the driving regulations and remain vigilant whatever the traffic conditions.
F

M
onitor your environment and keep your
hands on the wheel to be able to react to
anything that may happen any time.
F

D
rive smoothly, anticipate the need for
braking and maintain a
longer safety
distance, especially in bad weather.
F

S
top the vehicle to carry out operations
that require close attention (such as
adjustments).
F

D
uring 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!
Never park the vehicle or leave the
engine running on a flammable sur face
(dr y 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:
F

c
heck that the depth of water does not
exceed 15
cm, taking account of waves that
might be generated by other users,
F

d
eactivate the Stop & Start function,
F

d
rive as slowly as possible without stalling.
In all cases, do not exceed 6
mph (10 km/h),
F

d
o not stop and do not switch off the engine.
Driving

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

118
Anti-theft protection
Electronic immobiliser
The keys include an electronic engine
immobiliser system, whose secret code must
be recognised in order for starting to be
possible.
If the system malfunctions, indicated by the
display of a message, the engine will not start.
Contact the CITROËN dealer.
Starting/Switching off the
engine with the key
Key ignition switch
Avoid attaching heavy objects to the key
or the remote control, which would weigh
down on its blade 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 reser ve level, the system switches to
energy economy mode: the power supply is
cut off automatically to preser ve the remaining
battery charge.
Switching off the engine leads to a
loss of
braking assistance.
Starting the engine
F Insert the key into the ignition switch; the system recognises the code.
F

U
nlock 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).
It has 3

positions:
-

position 1 (Stop): inserting and removing
the key, steering column locked.
-

position 2 (Ignition on) : steering column
unlocked, ignition on, Diesel preheating,
engine running,
-

position 3 (Starting) . Parking brake applied:
F

W

ith a

manual gearbox , place the gear
lever in neutral then depress the clutch
pedal fully.
F

W

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

W
ith 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).
F

W
ith a Diesel engine , turn the key to
position 2 , ignition on, to operate the engine
pre-heating system.
Driving

119
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 several
attempts, do not keep trying: you risk
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
F Stop the vehicle.
F W ith the engine running at idle, turn the key
to position 1 .
F

R
emove the key from the ignition switch.
F

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.
F

C
heck that the parking brake is correctly
applied, particularly on sloping ground.
Never switch off the ignition before the
vehicle is at a
complete stop. With the
engine off, the braking and steering
assistance systems are also cut off: risk of
loss of control of the vehicle.
When you leave the vehicle, keep the key
with you and lock the vehicle.
Energy economy mode
After switching off the engine (position 1
- Stop ), for a
maximum of 30 minutes you
can still use functions such as the audio and
telematic system, the wipers, dipped beam
headlamps, courtesy lamps, etc.
For more information on Energy
economy mode , refer to the
corresponding section.
Key left in
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) .
6
Driving

120
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 stopped.
If there is still a problem, refer to the "Key
not detected – Back-up starting or Back-
up switch-off " section.
Starting the engine
F 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 preheater warning
lamp is off.
F

Y
ou should keep the pedal fully depressed
and 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, you are alerted by
a
message that it is necessary to turn the
steering wheel while pressing the " S TA R T/
STOP " button, to help unlock 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 the engine
F Immobilise the vehicle, engine at idle.
F W ith a manual gearbox , ideally put the
gear lever into neutral.
F

W
ith an automatic gearbox , ideally select
mode P or N .
F

P
ress the " START/STOP " button.
In some circumstances, it is necessary to turn
the steering wheel to lock the steering column.
On certain versions with the EAT8
automatic
gearbox, the steering column does not lock, but
the gearbox locks in mode P .
If the vehicle is not immobilised, the
engine will not stop.
Never leave your vehicle with the
electronic key still inside.
Switching off the engine leads to a
loss of
braking assistance.
F

W

ith a

manual gearbox , place the gear
lever in neutral and depress the clutch pedal
fully.
or
F

W

ith an automatic gearbox , select mode P
or N and press the brake pedal. If this warning lamp comes on after
pressing the "
START/STOP " button:
Driving

121
Switching the ignition on
without starting
With the electronic key inside the vehicle,
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).
F

P
ress 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 to the steering
column to allow the engine to be started if
the system does not detect the key in the
recognition zone, or when the battery in the
electronic key is discharged. F

W
ith a manual gearbox
, place the gear
lever in neutral, then fully depress the clutch
pedal.
F
W
ith an automatic gearbox
, select mode
P , then fully depress the brake pedal.
F
P
ress the "
START/STOP " button.
The engine starts.
Back-up switch-off
When the electronic key is not detected or is
no longer in the recognition zone, a message
appears in the instrument panel when closing
a
door or trying to switch off the engine.
F

T
o confirm the instruction to switch off the
engine, press the " START/STOP" button for
about five seconds.
Emergency switch-off
In the event of an emergency only, the engine
can be switched off without conditions (even
when driving).
Press the " START/STOP " button for about
5


seconds.
In this case, the steering column locks as soon
as the vehicle stops.
On certain versions with the EAT8
automatic
gearbox, the steering column does not lock.
F

P

lace and hold the remote control against
the reader. In the event of a
fault with the electronic key,
contact a CITROËN dealer or a qualified
workshop.
Electric parking brake
In automatic mode, this system applies the
parking brake when the engine is switched off
and releases it when the vehicle moves off.
6
Driving