ignition CITROEN C4 2022 Repair Manual

107
Driving
6Driving on flooded roads
Before entering into a flooded area, it is
strongly recommended that you deactivate
the Stop & Start system.
For more information on Driving
recommendations, particularly on flooded
roads, refer to the corresponding section.
Operation
Main conditions for operation
– The driver ’s door must be closed.
– The driver's seat belt must be fastened.
–

The level of charge in the battery must be
sufficient.
–


The temperature of the engine must be within
its nominal operating range.
–


The outside temperature must be between
0°C and 35°C.
Putting the engine into standby
(STOP mode)
The engine automatically enters standby mode
as soon as the driver indicates their intention to
stop:
–

W
ith a manual gearbox: with the gear lever
in neutral and the clutch pedal released.
–

W
ith an automatic gearbox: with the gear
selector in mode D or M, the brake pedal
depressed until the vehicle stops or the gear
selector in mode N, with the vehicle stationary.
Time counter
A time counter adds up the time spent in standby
during the journey. It is reset to zero every time
the ignition is switched on.
Special cases:
The engine will not go into standby if the
conditions for operation are not met and in the
following cases:
–

Steep slope (ascending or descending).
–


V
ehicle has not exceeded 6 mph (10 km/h)
since the last engine start (with the key or the
START/STOP button).
–

Needed
to maintain a comfortable temperature
in the passenger compartment.
–

Demisting active.
In these cases, this indicator lamp flashes
for a few seconds, then goes off.
After the engine has restarted, STOP mode is not available until the vehicle
has reached a speed of 5 mph (8
km/h).
During parking manoeuvres, STOP mode
is not available for a few seconds after
coming out of reverse gear or turning the
steering wheel.
Restarting the engine (START mode)
The engine automatically restarts as soon as the
driver indicates the intention of moving off again: With a manual gearbox: with the clutch pedal
fully depressed.
With an automatic gearbox:
–

With the selector in mode
D or M: with the
brake pedal released.
–
With the selector in mode
N and the brake
pedal released: with the selector at D or M.
–
With the selector in mode
P and the brake
pedal depressed: with the selector at R, N, D
or M.
–
With reverse gear engaged.
Special cases
The engine will restart automatically if the
conditions for operation are met again and in the
following cases:
–

With a manual gearbox: vehicle speed
exceeds 2.5 mph (4

km/h).
–

With an automatic gearbox, in mode N

, vehicle
speed exceeds 0.6 mph (1
km/h).
In these cases, this indicator lamp flashes
for a few seconds, then goes off.
Malfunctions
In the event of a fault with the system, this
warning lamp flashes for a few moments
on the instrument panel, then remains on,
accompanied by the display of a message.
Have it checked by a CITROËN dealer or a
qualified workshop.

108
Driving
The vehicle stalls in STOP mode
All of the instrument panel warning lamps come
on if there is a fault.
►
Switch off the ignition then start the engine
again with the key or the " ST

ART/STOP" button.
12 V battery
The Stop & Start system requires a
12 V battery of specific technology and
specification.
All work must be carried out only by a
CITROËN dealer or a qualified workshop
Tyre under-inflation detection
This system alerts the driver if one or more tyres
suffer a drop in pressure.
The alert is raised when the vehicle is moving,
not when stationary.
It compares the information given by the wheel
speed sensors with reference values, which
must be reinitialised every time the tyre
pressures are adjusted or a wheel changed.
It takes into account the last values stored
during the reinitialisation request. It is therefore
essential that the tyre pressure is correct during
the operation. This operation is the driver’s
responsibility.
The tyre under-inflation detection cannot, in any circumstances, replace the need
for vigilance on the part of the driver.
This system does not avoid the need to
regularly check the tyre pressures (including
the spare wheel), especially before a long
journey.
Driving with under-inflated tyres, particularly
in adverse conditions (heavy load, high
speed, long journey):
–

worsens road-holding.
–


lengthens braking distances.
–


causes premature wear of the tyres.
–


increases energy consumption.
The inflation pressures defined for the vehicle can be found on the tyre pressure
label.
For more information on the Identification
markings, refer to the corresponding section.
Checking tyre pressures
This check should be done monthly
when the tyres are "cold" (vehicle stopped for
1 hour or after a journey of less than 6 miles
(10

km) at moderate speeds).
Otherwise, add 0.3 bar to the pressures
shown on the label.
Snow chains
The system does not have to be
reinitialised after fitting or removing snow
chains.
Under-inflation alert
This is signalled by the fixed illumination of this warning lamp, accompanied by an
audible signal and, depending on equipment, the
display of a message.
►

Reduce speed immediately
, avoid excessive
steering movements and avoid sudden braking.
►

Stop the vehicle as soon as it is safe to do
so.
The loss of pressure detected may not always cause visible deformation of the
tyre.
Do not rely on just a visual check.
►

Using a compressor
, such as the one in
the temporary puncture repair kit, check the
pressures of all four tyres when cold.
►

If it is not possible to carry out this check
immediately

, drive carefully at reduced speed.
►

In the event of a puncture, use the
temporary puncture repair kit or the spare wheel
(depending on equipment).
Driving too slowly may not ensure
optimum monitoring.
The alert is not immediately triggered in the
event of a sudden loss of pressure or tyre

11 5
Driving
6With MyCitroën Drive Plus
The settings are changed via the ADAS
touch screen application.
Speed limiter
For more information, refer to the
General recommendations on the use
of driving and manoeuvring aids .
This system prevents the vehicle from
exceeding the speed programmed by the
driver (speed setting).
The speed limiter is switched on manually.
The minimum speed setting is 19 mph (30
km/h).
The speed setting remains in the system
memory when the ignition is switched off.
Steering-mounted controls



1. Speed limiter selection
2. Switch on/pause the speed limiter at the
previously saved speed setting
3. Increase/Decrease the speed setting
4. Activate the speed limiter at the previously
saved speed setting
Use the speed suggested by the Road signs
recognition function
For more information on the Road signs
recognition


function, refer to the corresponding
section.
Information displayed on
the instrument panel


5. Speed limiter mode selection indication
6. Speed limiter on (green)/pause (grey)
indication
7.Speed setting value
8. Speed suggested by the Road signs
recognition function (depending on version)
Switching on/Pausing
► Press 1-LIMIT to select the speed limiter
mode; the function is paused (grey).
►

If the limit speed setting is suitable (most
recent speed setting programmed in the system),
press

2-I I> or 4-OK to switch the speed limiter
on (green).
►

Pressing
2-I I> again temporarily pauses the
function.
When the speed setting remains below
the vehicle's speed for a prolonged
period of time, an audible warning is emitted.
Adjusting the speed setting
You do not have to switch the speed limiter on in
order to set the speed.
To change the speed setting using the vehicle’s
current speed:
►

For steps of +/- 1 mph (1 km/h), make
successive short presses upwards/downwards
on

3 to increase/decrease.
►

For steps of +/- 5 mph (5
km/h), press and
hold upwards/downwards on 3 to increase/
decrease.
To modify the cruise speed setting based on the speed suggested by the Road signs recognition,
as shown on the instrument panel:

11 7
Driving
6Cruise control
For more information, refer to the
General recommendations on the use
of driving and manoeuvring aids and the
Cruise control - particular
recommendations.
This system automatically maintains the vehicle’s speed at the value programmed
by the driver (speed setting), without the use of
the accelerator pedal.
Cruise control is switched on manually.
It requires a minimum vehicle speed of 25 mph
(40

km/h).
With a manual gearbox, third gear or higher must
be engaged.
With an automatic gearbox, mode

D
or second
gear or higher in mode

M
must be engaged.
With a drive selector, mode
D or B must be
engaged.
Cruise control remains active after
changing gear, regardless of the gearbox
type, on engines fitted with the Stop & Start
function.
Switching off the ignition cancels any
speed setting.
Steering-mounted controls



1. Cruise control selection
2. Switch on/pause cruise control at the
previously saved speed setting
3. Increase/Decrease the speed setting (if
cruise control activated)
Activation of cruise control in progress (if
cruise control deactivated)
4. Activation of cruise control in progress
Use the speed suggested by the Road signs
recognition
For more information on the Road signs
recognition


function, refer to the corresponding
section.
Information displayed on
the instrument panel


5. Cruise control mode selection indication
6. Cruise control on (green)/pause (grey)
indication
7. Speed setting value
8. Speed suggested by the Road signs
recognition function (depending on version)
Switching on/pausing
► Press button 1 to select the cruise control
mode; the function is paused (grey).
►

Press
3 upwards/downwards, or press 4-OK
to activate the cruise control and save a speed
setting as soon as the vehicle speed reaches the
desired level (green).
►

Pressing button 2-I I>

temporarily pauses the
function.

121
Driving
6To change the speed setting using the
speed suggested by the Road signs
recognition function and displayed on the
instrument panel:
–

When passing the sign:
►


Press
4-OK to save the suggested speed.
This value is then immediately shown as the new
speed setting on the instrument panel.
–

After passing the sign:
►


Press
4-OK. The message "OK?" is
displayed to confirm the request to save.
►

Press
4-OK again to save the suggested
speed. The new speed setting value is displayed
on the instrument panel.
Pausing/resumption of cruise control
► Press 2-I I> or depress the brake pedal. The
symbol turns grey.
Cruise control may also have been paused:
–

automatically
, if the electronic stability control
(ESC) system is triggered.
–

by shifting to neutral or engaging reverse gear
.
–

by using the electric parking brake.
–


by unfastening the seat belt.
–


by opening the driver's door
.
►

Press
2-I I> or 4-OK to reactivate cruise
control.
With an EAT8 gearbox or a drive selector,
following braking that has brought the vehicle
to a complete stop, if the traffic conditions do
not allow the vehicle to begin moving again
within 3
seconds of stopping, press
2-I I>
or the
accelerator pedal to move off.
Cruise control remains active following a
gear change.
When cruise control is paused and the
driver tries to reactivate it, the message
"Activation refused, conditions unsuitable "
is temporarily displayed if reactivation is
impossible (required conditions not met).
Changing the programmed speed setting
with the Road signs recognition function
► Press 4-OK to accept the speed suggested
by the function on the instrument panel, then
press again to confirm.
If the selected speed is far from the
current vehicle speed, a strong
acceleration or deceleration is felt.
Changing the inter-vehicle distance
► Press 3 to display the distance setting
thresholds (" Distant", "Normal" or "Close"),
then make successive short presses upwards/
downwards to select a threshold.
After a few seconds, the option is accepted and
will be memorised when the ignition is switched
off.
The driver must keep a sufficient safety distance
from the vehicle in front.
Temporarily exceeding the speed setting
► Depress the accelerator pedal. The system
is suspended as long as the acceleration is
maintained. The speed next to the symbol
disappears from the instrument panel.
Deselecting the system
► Press 1-ASSIST until the symbols disappear
from the instrument panel.
Messages and alerts
The actual order of display of the messages or alerts may be different.
(grey symbol)
Cruise control selected, but
cannot be activated.
All the operating conditions have
not been met.
(grey symbol)
Cruise control selected, awaiting
activation.
All the operating conditions are
met.
(grey symbol)
Cruise control paused, but
cannot be reactivated.
All the operating conditions have
not been met.

124
Driving
All operating conditions are met; the system is
active.
(orange)
System malfunction.
If the driver no longer wishes to use the system
for some time, they can deactivate it by pressing
the button again (confirmed when the symbol
disappears).
The system status is saved when the ignition is switched off.
Operating conditions
– Adaptive cruise control active.
– ESC system operational.
–

ASR system activated.
–


No trailer detected.
–


No 'space-saver' spare wheel in use.
–


V
ehicle not subject to strong lateral g-forces.
–

Direction indicators not activated.
Regulation
The driver must hold the steering wheel
properly.
When regulation is activated, the symbols are
displayed in green: with small steering inputs,
the system steers the vehicle and keeps it in the
position chosen by the driver in the traffic lane.
This position is not necessarily the centre of the
lane.
The driver can feel movements in the steering
wheel.
At any time, the driver can change the position of
the vehicle by intervening on the steering wheel
and maintaining the position until the system has
taken it into account. If the chosen position is too
off-centre, an automatic re-centering manoeuvre
can occur. The system adjusts to the newly
defined position.
Pausing/Suspending the
system
The driver must act promptly if they believe that the traffic conditions or the
state of the road surface require their
intervention, by moving the steering wheel to
temporarily suspend system operation. Any
action on the brake pedal that causes the
Adaptive cruise control
system to be paused
will also cause the system to be paused.
If the system detects that the driver is not
holding the wheel firmly enough, it
triggers a series of gradual alerts and then
deactivates itself if there is no response from
the driver.
If the function is suspended due to the
prolonged release of the force holding
the steering wheel, the system must be
reactivated by pressing the button again.
Automatic suspension
Suspension of the system is accompanied by a
specific audible signal.
–

T
riggering of the ESC system.
–

Insufficient lane detection. In this case, the
Lane keeping assist function can take over

,
and the system will reactivate itself once the
operating conditions are met again.
Paused by the driver
– Travelling outside the lane limits.
– T oo tight a grip on the steering wheel or
dynamic action on the steering wheel.
–

Action on the brake pedal (resulting in a pause
until cruise control is reactivated) or accelerator
pedal (suspension for as long as the pedal is
depressed).
–


Pausing of the
Adaptive cruise control system.
–

Deactivation of the
ASR system.

131
Driving
6► Press and hold this button to deactivate or
press briefly to reactivate the system at any time.
Deactivation is signalled by the lighting of
the indicator lamp in the button and this
warning lamp in the instrument panel.
With MyCitroën Drive Plus
It is configured in the ADAS touch screen
application or via the Shortcuts for
driving aids .
Deactivation is confirmed by the
illumination of this indicator lamp on the
instrument panel.
Malfunction
In the event of a malfunction,
these warning lamps light up on
the instrument panel, accompanied by the
display of a message and an audible signal.
Have it checked by a CITROËN dealer or a
qualified workshop.
Blind spot monitoring
For more information, refer to the
General recommendations on the use
of driving and manoeuvring aids .


This system warns the driver of a potential
danger posed by the presence of another vehicle
(car, lorry, motorcycle) in the vehicle's blind
spots (areas hidden from the driver's field of
vision) using sensors located on the sides of the
bumpers.


A warning lamp appears in the door mirror on the
side in question:
–

fixed
, immediately, when being overtaken.
–

flashing , after a delay of about one second,
when overtaking a vehicle slowly

, and when the
direction indicator is used.
Activation/Deactivation
With Touch screen BLUETOOTH audio
system or MyCitroën Play
The settings are changed via the Driving
touch screen menu.
With MyCitroën Drive
The settings are changed via the Vehicle
touch screen menu.
With MyCitroën Drive Plus
The settings are changed via the ADAS
touch screen application.
When starting the vehicle, the warning lamp
comes on in each mirror to indicate that the
system is activated.
The status of the system is memorised when the
ignition is switched off.
The system is automatically deactivated when towing with a towing device
approved by CITROËN.
Operating conditions
– All vehicles are moving in the same direction
and in adjacent lanes.
–

The speed of your vehicle must be between
7

and 87 mph (12 and 140 km/h) (versions
without Park Assist) or between 19
and 87 mph
(30
and 140 km/h) (versions with Park Assist).
–

When overtaking a vehicle, the speed
difference is less than 6

mph (10 km/h).

133
Driving
6

This system:
– warns the driver that their vehicle is at risk of
collision with the vehicle in front, a pedestrian or
,
depending on version, a cyclist.
–

reduces the vehicle's speed to avoid a
collision or limit its severity

.
The speed will be reduced by a maximum of 12 mph (20 km/h) (versions
with camera only) or by a maximum of 31
mph (50
km/h) (versions with camera and
radar).
The system also takes motorcyclists into account.
This system is comprised of three functions:
–

Collision
Risk Alert.
–

Intelligent emergency braking assistance
(iEBA).
–


Active Safety Brake (automatic emergency
braking).


The vehicle has a multifunction camera located
at the top of the windscreen and, depending on
version, a radar located in the front bumper.
This system does not replace the need for driver vigilance.
This system is designed to assist the driver
and improve road safety.
It is the driver's responsibility to continuously
monitor traffic conditions in accordance with
applicable driving regulations.
As soon as the system detects a potential collision, it prepares the braking
circuit. This may cause a slight noise and a
slight sensation of deceleration.
Deactivation/Activation
By default, the system is automatically activated
at every engine start.
With Touch screen BLUETOOTH audio
system or MyCitroën Play
The settings are changed via the Driving
touch screen menu.
With MyCitroën Drive
The settings are changed via the Vehicle
touch screen menu.
With MyCitroën Drive Plus
The settings are changed via the ADAS
touch screen application.
Deactivation of the system is signalled by
the illumination of this warning lamp,
accompanied by the display of a message.
Operating conditions and
limits
Vehicle moving forward without trailer.
Brake system operational.
Seat belts fastened for all passengers.
Stabilised speed on roads with no or low
curvature.
This warning lamp lights up on the instrument panel without any additional
message, to indicate that the automatic braking
system is not available.
This is a normal behavior indicating that a
condition is not fulfilled and which does not
request the support of a workshop.
In any situations with ignition on where automatic
braking presents a risk, deactivating the system
is recommended, for instance:

134
Driving
– Towing a trailer (particularly a trailer without its
own braking system).
–
Carrying long objects on roof bars.
–


Driving with snow chains.
–


Using an automatic car wash.
–


Performing any maintenance (e.g.
changing a
wheel, working inside the engine compartment).
–

Placing the vehicle on a rolling bench in a
workshop.
–


T
owing the vehicle.
–

Following a damage of the windscreen close
to the detection camera.
The system is automatically deactivated when the use of certain types of
"space-saver" spare wheel (smaller diameter)
is detected, or if a fault with the brake pedal
switch or at least two brake lamps is detected.
Following a severe crash (e.g.
with airbag
deployment), the system is automatically
deactivated.
Have it checked by a CITROËN dealer or a
qualified workshop.
In case the detection is degraded or
temporarily unavailable by environment
conditions, then a driver indication is not
displayed (because a driver action is not
requested).
It can be dangerous to drive if the brake
lamps are not in perfect working order.
The driver must not overload the vehicle (keep within the GVW limit and load
height limits for roof bars).
Collision Risk Alert
This function warns the driver if there is a risk
of collision with the preceding vehicle, or with a
pedestrian or cyclist.
Modifying the alert trigger threshold
The trigger threshold determines the sensitivity
with which the function warns of the risk of
collision.
The selected threshold is memorised when the
ignition is switched off.
With Touch screen BLUETOOTH audio
system or MyCitroën Play
The threshold is set via the Driving touch screen menu.
►

Select one of the three pre-defined
thresholds: "

Far", "Normal" or "Close".
With MyCitroën Drive
The threshold is set via the Vehicle touch screen menu.
►

Select one of the three pre-defined
thresholds: "

Far", "Normal" or "Close".
With MyCitroën Drive Plus
The threshold is set via the ADAS touch screen application.
► Select one of the 3 preset thresholds: " Far ",
"Medium" or "Near".
Operation
Depending on the collision risk detected by the
system and the alert trigger threshold chosen
by the driver, different levels of alert may be
triggered and displayed on the instrument panel.
The system takes into account the vehicle
dynamics, the difference speed of the own
vehicle and the object identified for the
collision risk, and the operation of the vehicle
(e.g.
actions on the pedals, steering wheel) to
trigger the alert at the most relevant moment.
(orange)
Level 1: visual alert only, warning that the
preceding vehicle is very close.
The message "Vehicle close" is displayed.
(red)
Level 2: visual and audible alert, warning
that a collision is imminent.
The message "Brake! " is displayed.
Level 3: a micro-braking may be given,
confirming the risk of collision (optional).
While approaching a vehicle too quickly,
the level 2 alert may be displayed
directly.
Important: the level 1 alert depends on the
trigger threshold selected. It reacts only on
moving vehicles. It is disabled automatically
at lower speed.

136
Driving
The brake pedal may feel hard and vibrate slightly while the function is
operating.
If the vehicle comes to a complete stop,
automatic braking is maintained for 1 to 2
seconds.
Malfunction
This warning lamp lights up on the instrument panel, if the automatic braking
system is reduced or degraded.
This is a normal behavior, which does not
request the support of a qualified workshop.
This may be caused by a reduced visibility
(e.g.

rain, fog, snow, blinding by low sun) or by
a real sensor blockage. In this case, stop the
vehicle and verify if the front camera or the front
radar is covered by dirt, snow, ice or anything
preventing the sensing.
In the event of a malfunction, this warning
lamp lights up on the instrument panel,
accompanied by the display of a message and
an audible signal.
Have it checked by a CITROËN dealer or a
qualified workshop.
If these warning lamps come on
after the engine has been switched
off and then restarted, contact a CITROËN
dealer or a qualified workshop to have the
system checked.
These warning lamps light up on the instrument panel and/or in the
warning lamp display for seat belts and front
passenger airbag to indicate that the driver's
and/or front passenger's seat belt is not fastened
(depending on version). The automatic braking
system is deactivated until the seat belts are
fastened.
Distraction detection
For more information, refer to the
General recommendations on the use
of driving and manoeuvring aids .
Depending on version, the function consists of
either the "Coffee Break Alert" system alone or
combined with the "Driver Attention Warning"
system.
These systems are in no way designed to keep the driver awake or to prevent
the driver from falling asleep at the wheel.
It is the driver’s responsibility to stop if feeling
tired.
Take a break if you are feeling tired or at least
every 2 hours.
Activation/Deactivation
By default, the function is automatically activated
at every engine start.
With Touch screen BLUETOOTH audio
system or MyCitroën Play
The settings are changed via the Driving
touch screen menu.
With MyCitroën Drive
The settings are changed via the Vehicle
touch screen menu.
With MyCitroën Drive Plus
The settings are changed via the ADAS
touch screen application.
Coffee Break Alert
The system triggers an alert when it detects that the driver has not taken a
break after two hours of driving at a speed above
43 mph (70
km/h).
This alert is issued via the display of a message
encouraging the driver to take a break,
accompanied by an audible signal.
If the driver does not follow this advice, the alert
is repeated hourly until the vehicle is stopped.
The system resets itself if one of the following
conditions is met:
–

With the engine running, the vehicle has been
stationary for more than 15 minutes.
–


The ignition has been switched off for a few
minutes.
–


The driver's seat belt is unfastened and their
door is opened.