2020 CITROEN C4 lane assist

2
Contents
 ■
Overview
 ■
Eco-driving
1InstrumentsDriver information 9
Instrument panels 9
Head-up display 10
Warning and indicator lamps 12
Indicators 18
Manual test 22
Total distance recorder 23
Lighting dimmer 23
Trip computer 23
Touch screen BLUETOOTH audio system 24
10-inch touch screen 25
Remotely operable functions (Electric) 27
2AccessElectronic key with remote control function and
built-in key 28
Proximity Keyless Entry and Start 30
Central locking 32
Back-up procedures 32
Doors 35
Boot 35
Alarm 35
Electric windows 37
Sunroof 38
3Ease of use and comfortFront seats 40
Steering wheel adjustment 42
Heated steering wheel 42
Mirrors 43
Rear bench seat 44
Heating and Ventilation 45
Manual air conditioning 47
Dual-zone automatic air conditioning 47
Front demisting - defrosting 50
Heated windscreen 50
Rear screen demisting/defrosting 51
Temperature conditioning (Electric) 51
Interior fittings 52
Courtesy lamps 55
Interior ambient lighting 55
Boot fittings 55
4Lighting and visibilityLighting control stalk 57
Direction indicators 58
Automatic illumination of headlamps 59
Headlamp beam height adjustment 59
Guide-me-home and welcome lighting 59
Automatic lighting systems - General
recommendations
60
Automatic headlamp dipping 60
Cornering lighting 61
Wiper control stalk 62
Intermittent wipers 63
Automatic wipers 63
Changing a wiper blade 64
5SafetyGeneral safety recommendations 66
Hazard warning lamps 66
Horn 67
Pedestrian horn (Electric) 67
Emergency or assistance 67
Electronic stability control (ESC) 69
Seat belts 71
Airbags 73
Child seats 75
Deactivating the front passenger airbag 77
ISOFIX child seats 78
i-Size child seats 80
Installing child seats 81
Child lock 83
6DrivingDriving recommendations 84
Starting / Switching off the engine with the key 86
Starting/Switching off the engine with
Keyless Entry and Start
87
Manual parking brake 89
Electric parking brake 90
6-speed manual gearbox 92
Automatic gearbox 92
Drive selector (Electric) 94
Driving modes 95
Hill start assist 96
Gear shift indicator 97
Stop & Start 97
Tyre under-inflation detection 99
ConnectedCAM Citroën 100
Driving and manoeuvring aids - General
recommendations
101
Road signs recognition 102
Speed limiter 105
Cruise control - Specific recommendations 107
Cruise control 107
Highway Driver Assist 109
Adaptive cruise control 109
Lane positioning assist 11 3

3
Contents






Active lane departure warning system 11 8
Blind spot monitoring 121
Active Safety Brake with Collision Risk Alert and
Intelligent emergency braking assistance
122
Distraction detection 125
Parking sensors 126
Reversing camera 127
Top Rear Vision - 360 vision 128
Park Assist 132
7Practical informationCompatibility of fuels 137
Refuelling 137
Misfuel prevention (Diesel) 138
Charging system (Electric) 138
Charging the traction battery (Electric) 145
Towing device 149
Towing device with quickly detachable towball 150
Roof bars 152
Snow chains 153
Energy economy mode 153
Bonnet 154
Engine compartment 155
Checking levels 156
Checks 158
AdBlue® (BlueHDi) 160
Free-wheeling 162
Advice on care and maintenance 162
8In the event of a breakdownWarning triangle 165
Running out of fuel (Diesel) 165
Tool kit 165
Temporary puncture repair kit 166
Spare wheel 169
Changing a bulb 171
Fuses 174
12

V battery

/ Accessory battery 175
Towing the vehicle 178
9Technical dataEngine technical data and towed loads 181
Petrol engines 182
Diesel engines 183
Electric motor 184
Dimensions 185
Identification markings 185
10Touch screen BLUETOOTH audio systemFirst steps 186
Steering mounted controls 186
Menus 187
Radio 188
DAB (Digital Audio Broadcasting) radio 189
Media 190
Telephone 191
Settings 193
Frequently asked questions 193
11MyCitroën PlayFirst steps 196
Steering mounted controls 197
Menus 197
Radio 198
DAB (Digital Audio Broadcasting) radio 199
Media 200
Telephone 201
Applications 205
Settings 205
Frequently asked questions 206
12CITROËN Connect NavFirst steps 209
Steering mounted controls 210
Menus 210
Voice commands 212
Navigation 215
Connected navigation 218
Applications 220
Radio 223
DAB (Digital Audio Broadcasting) radio 224
Media 224
Telephone 226
Settings 228
Frequently asked questions 230
13Event data recorders
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Alphabetical index
http://q-r.to/bagGl9
Access to additional videos

11
Instruments
1Display in operation

Once the system has been activated, the
following information is grouped together in the
head-up display:
A.The speed of the vehicle.
B. Cruise control/speed limiter information,
indication of danger zones (with connected
navigation) and, where fitted, information
from the Road signs recognition function.
C. If the vehicle is so equipped, inter-vehicle
distance information, lane positioning assist
information and automatic emergency braking
alerts.
D. If the vehicle is so equipped, navigation
information.
For more information about Navigation,
refer to the sections describing the audio
and telematics systems.
Selector



1. Switching on
2. Switching off (long press)
3. Brightness adjustment
4. Display height adjustment
Activation/Deactivation
► With the engine running, press any button to
activate the system and deploy the projection
blade.
►

Press and hold button 2

to deactivate the
system and retract the projection blade.
The state of the system is saved when the
engine is switched off and restored on restarting.
Adjusting the height
► With the engine running, adjust the display to
the desired height using the buttons 4
:
• up to move the display up,
• down to move the display down.
Brightness adjustment
► With the engine running, adjust the
brightness of the information display using the
buttons
3:
•

on the "sun" to increase the brightness,
•


on the "moon" to decrease the brightness.
When stationary or while driving, no
objects should be placed around the
projection blade (or in its recess) so as not to
impede its movement and correct operation.
In certain extreme weather conditions
(rain and/or snow, bright sunshine, etc.),
the head-up display may not be legible or
may suffer temporary interference.
Some sunglasses may hamper reading of the
information.
To clean the projection blade, use a clean,
soft cloth (such as a spectacles cloth or
microfibre cloth). Do not use a dry or abrasive
cloth, or detergent or solvent products, due to
the risk of scratching the projection blade or
damaging the non-reflective coating.

16
Instruments
Never drive until completely empty, as
this could damage the emissions control and
injection systems.
Low traction battery level (Electric)Fixed, accompanied by an audible signal.
The state of charge of the traction battery
is low.
View the remaining range.
Put the vehicle on charge as soon as possible.
Tortoise mode with limited driving range
(Electric)
Fixed.
The state of charge of the traction battery
is critical.
The engine power gradually decreases.
You must put the vehicle on charge.
If the warning lamp remains lit, carry out
(2).
Pedestrian horn (Electric)Fixed.
Horn fault detected.
Carry out (3).
Collision Risk Alert/Active Safety Brake
Fixed, accompanied by the display of a
message.
The system has been deactivated via the touch
screen (Driving/Vehicle menu).
Flashing.
The system activates and brakes the
vehicle momentarily to reduce the speed of
collision with the vehicle in front.
For more information, refer to the Driving
section.
Fixed, accompanied by a message and
an audible signal.
The system has a fault.
Carry out (3).
Fixed.
The system has a fault.
If these warning lamps come on after the engine
is switched off and then restarted, carry out (3).
Active lane departure warning systemFixed.
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 detected lane
marking.
For more information, refer to the Driving
section.
Fixed.
The system has a fault.
Carry out (3).
Lane positioning assistFixed, accompanied by the
Service warning lamp.
The system has a fault.
Carry out (3).
Stop & Start (Petrol or Diesel)Fixed, accompanied by the display of a
message.
The Stop & Start system has been deactivated
manually.
The engine will not switch off at the next traffic
stop.
Fixed.
The Stop & Start system has been
deactivated automatically.
The engine will not switch off at the next traffic
stop, if the exterior temperature is:
–

below 0°C.
–


above +35°C.
For more information, refer to the

Driving
section.
Flashing then fixed, accompanied by a
message.
The system has a fault.
Carry out (3).
AdBlue® (BlueHDi)On for around 30 seconds when starting
the vehicle, accompanied by a message
indicating the driving range.
The driving range is between 1,500 and 500
miles (2,400 and 800
km).
Top up the AdBlue
®.Fixed, on switching on the ignition,
accompanied by an audible signal and a
message indicating the driving range.
The driving range is between 500 and 62 miles
(800 and 100
km).
Promptly top up the AdBlue
®, or carry out (3).

17
Instruments
1Flashing, accompanied by an audible
signal and a message indicating the
driving range.
The driving range is less than 62 miles (100
km).
You must top up the AdBlue
® to avoid engine
starting being prevented , or carry out
(3).
Flashing, accompanied by an audible
signal and a message indicating that
starting is prevented.
The AdBlue
® tank is empty: the legally required
engine immobiliser system prevents the engine
from starting.
To restart the engine, top up the AdBlue
® or carry
out (2).
It is essential to add at least 5 litres of AdBlue
®
to the tank.
SCR emissions control system (BlueHDi)Fixed when the ignition is switched
on, accompanied by an audible
signal and a message.
A malfunction of the SCR emissions control
system has been detected.
This alert disappears once the exhaust
emissions return to normal levels.
Flashing AdBlue® warning lamp on
switching on the ignition, with the
Engine self-diagnostics warning lamp on fixed,
accompanied by an audible signal and a
message indicating the driving range.
Depending on the message displayed, it is
possible to drive for up to 685 miles (1,100
km)
before the engine immobiliser is triggered. Carry out (3) without delay, to
avoid starting
being prevented.
Flashing AdBlue® warning lamp on
switching on the ignition, with the
Engine self-diagnostics warning lamp on fixed,
accompanied by an audible signal and a
message indicating that starting is prevented.
The engine immobiliser prevents the engine from
restarting (the permitted driving limit has been
exceeded after confirmation of a malfunction of
the emissions control system).
To start the engine, carry out (2).
Rear foglampFixed.
The lamp is on.
Foot on the clutch (Petrol or Diesel)Fixed.
Stop & Start: the change to START mode
is rejected because the clutch pedal is not fully
depressed.
Fully depress the clutch pedal.
Foot on the brake
Fixed.
Insufficient or no pressure on the brake
pedal.
Automatic headlamp dippingFixed, accompanied by an audible signal
and a message.
A function or camera malfunction is detected.
Carry out (2).
Green warning/indicator lamps
Stop & Start (Petrol or Diesel)
Fixed.
When the vehicle stops, the Stop & Start
puts the engine into STOP mode.
Flashing temporarily.
STOP mode is momentarily unavailable
or START mode is automatically triggered.
For more information, refer to the Driving
section.
Vehicle ready to drive (Electric)Fixed, accompanied by an audible signal
when it comes on.
The vehicle is ready to drive and the thermal
comfort systems are available.
The indicator lamp goes out upon reaching a
speed of approximately 3 mph (5
km/h) and
lights up again when the vehicle stops moving.
The lamp will go out when you turn off the
engine and exit the vehicle.
Park AssistFixed.
The function is active.
For more information, refer to the Driving
section.
Lane positioning assistFixed.
The function has been activated.
All conditions have been met: the system is
operating.
For more information, refer to the Driving
section.

109
Driving
6► For steps of +/- 5 mph (5 km/h), press and
hold upwards/downwards on 3 to increase/
decrease.
Prolonged pressing and holding
upwards/downwards on 3 causes a very
rapid change in vehicle speed.
As a precaution, we recommend setting a cruise speed fairly close to the current
speed of your vehicle, to avoid any sudden
acceleration or deceleration of the vehicle.
To change the speed setting using the speed suggested by the Road signs recognition
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.
Off
► Press 1: the cruise control information display
disappears.
Malfunction
In the event of a malfunction, dashes are
displayed flashing and then fixed instead of the
speed setting.
Have it checked by a CITROËN dealer or a
qualified workshop.
Highway Driver Assist
Only available on versions with the EAT8
automatic gearbox and drive selector.
This system automatically adjusts the speed
and corrects the trajectory of the vehicle, using
Adaptive cruise control with Stop&Go function in
conjunction with Lane Positioning Assist.
These two functions must be activated and in
operation.
For more information on Adaptive cruise
control and Lane Positioning Assist, refer to
the corresponding sections.
The system assists the driver by acting on the steering, acceleration and braking
within the physical limits
and capacities of the
vehicle. Certain road infrastructure elements
or vehicles in the surroundings may not be
properly seen or may be poorly interpreted by
the camera and radar, resulting in an
unexpected change in direction, a lack of
steering correction and/or inappropriate
management of acceleration or braking.
Primarily designed for driving on main
roads and motorways, this system only
works with moving vehicles driving in the
same direction as your vehicle.
Adaptive cruise 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
speed at a value set by the driver (speed
setting), while respecting a safety distance from
the vehicle in front (target vehicle) previously set
by the driver. The system automatically manages
the acceleration and deceleration of the vehicle.
With the Stop function , the system manages
braking until the vehicle comes to a complete
stop.
With the Stop
& Go function , the system
manages braking until the vehicle comes to a
complete stop and restarts the vehicle.
The brake lamps come on if the vehicle is slowed down by the system.
It can be dangerous to drive if the brake
lamps are not in perfect working order.

11 3
Driving
6

– Vehicles crossing your lane.
– V ehicles driving in the opposite direction.
Situations where the driver must suspend the
system:


– Vehicles in a tight bend.
– When approaching a roundabout.

– When following a narrow vehicle.
Reactivate the system when conditions allow .
Situations in which the driver is prompted to
immediately resume control:
–

Excessively sharp deceleration by the vehicle
in front of you.


– When a vehicle cuts in sharply between your
vehicle and the one in front.
Some vehicles on the road may be
poorly perceived or interpreted by the
camera and/or the radar (e.g.
truck), which
can lead to an incorrect evaluation of
distances and result in inappropriate
acceleration or braking of the vehicle.
Pay particular attention:
– When motorcycles are present and
when there are vehicles staggered across the
traffic lane.
–

When entering a tunnel or crossing a
bridge.
If any of the following malfunctions
occurs, do not use the system:
–

Following an impact on the windscreen
close to the camera or on the front bumper
(versions with radar).
–


Brake lamps not working.
If the vehicle has undergone any of the
following modifications, do not use the
system:
–

Carrying long objects on roof bars.
–


Towing.
–

Use of the "space-saver" type spare wheel
(depending on version).
–


Front end of the vehicle modified (for
example by adding long-range headlamps or
painting the front bumper).
–


Obstructed radar and/or camera.
Malfunction
In the event of a malfunction,
dashes are displayed instead of
the speed setting.
This warning lamp comes on, accompanied by a message and an
audible signal, to confirm the malfunction.
Have it checked by a CITROËN dealer or a
qualified workshop.
Lane positioning assist
For more information, refer to the
General recommendations on the use
of driving and manoeuvring aids .

11 4
Driving

The system identifies the limits of the traffic
lane and steers the vehicle inside this lane to
maintain it in the lateral position chosen by the
driver.
To do this, the system uses a camera placed on
the upper part of the windscreen.
This function is primarily suitable for driving on
motorways and main roads.
Activation/Deactivation
The Lane positioning assist system is
automatically activated, after selecting Highway
Driver Assist mode.
For more information on the Highway Driver
Assist system, refer to the corresponding
section.
The selection is confirmed by the display of
the symbols on the instrument panel or on the
head-up display (if fitted), representing the
steering wheel and the side lines.
The colour of the symbols depends on the
operating state of the system:
(grey)
One or more operating conditions is not
met; the system is paused.
(green)
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.