stop start CITROEN C5 2021 Owner's Guide
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109
Driving
6Off
â–º Press 1-LIMIT: the speed limiter information 
display disappears.
Malfunction
In the event of a malfunction, dashes are 
displayed flashing and then fixed (orange) 
instead of the speed setting.
Have it checked by a CITROËN dealer or a 
qualified workshop.
Cruise control - Specific 
recommendations
The cruise control function does not  guarantee compliance with the maximum 
authorised speed and the safety distance 
between vehicles, the driver remains 
responsible for their driving.
In the interest of public safety, only use cruise 
control if the traffic conditions enable vehicles 
to drive at a steady speed and maintain an 
adequate safety distance.
Remain vigilant while cruise control is 
activated. If you press and hold one of the 
speed setting modification buttons, your 
vehicle may change speed very abruptly.
When descending a steep hill , the cruise 
control system cannot prevent the vehicle 
from exceeding the set speed. Brake if 
necessary to control the vehicle speed.
On steep climbs or when towing, the set 
speed may not be reached or maintained.
Exceeding the programmed speed 
setting
You can temporarily exceed the speed 
setting by pressing the accelerator pedal (the 
programmed speed flashes).
To return to the speed setting, release the 
accelerator pedal (when the set speed is 
reached again, the displayed speed stops 
flashing).
Operating limits
Never use the system in the following 
situations:
–
 
In an urban area with the risk of 
pedestrians crossing the road.
–
 
In heavy traffic (except versions with the 
Stop & Go function).
–
 
On winding or steep roads.
–
 
On slippery or flooded roads.
–
 
In poor weather conditions.
–
 
In the event of restricted visibility for the 
driver
.
–
 
Driving on a speed circuit.
–
 
Driving on a rolling road.
–
 
When using a ‘space-saver
 ’ type spare 
wheel.
–
 
When using snow chains, non-slip covers 
or studded tyres.
Cruise control
For more information, refer to the 
General recommendations on the use 
of driving and manoeuvring aids  and 
to
 
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 an automatic gearbox, mode
 
D
  or second 
gear or higher in mode
 
M
  must be engaged.
Cruise control remains active after 
changing gear on engines fitted with Stop 
& Start.
Switching off the ignition cancels any 
speed setting.   
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11 2
Driving
– Highway Driver Assist with Adaptive Cruise 
Control with Stop&Go and Lane positioning 
assist.
–
 
Speed setting advance recommendations.
–
 
Speed adjustment during cornering.
–
 
Semi-automatic lane changing.
By default, these functions are activated; but 
they can be deactivated.
For more information on these functions, refer to 
the corresponding sections.
The availability of the system depends on the 
country you are driving in.
This system is only to be used on eligible 
motorways and main roads.
Selecting/Deselecting the 
system
It is configured in the ADAS touch screen 
application.
The system's status is saved when the ignition is 
switched off.
Adaptive cruise control
For more information, refer to the 
General recommendations on the use 
of driving and manoeuvring aids  and 
to
 
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
  &   Go function, the system 
manages braking until the vehicle comes to a 
complete stop and the restarting of the vehicle.
The brake lamps come on if the vehicle  is slowed down by the system.
The system is not operational in the event of 
a brake lamp failure.
 
 
To do this, the system uses a camera fitted at the 
top of the windscreen and a radar fitted in the 
front bumper.
Primarily designed for driving on main 
roads and motorways, this system only 
works with moving vehicles driving in the 
same direction as your vehicle.
If the driver activates the direction 
indicator to overtake a slower vehicle, 
cruise control may temporarily reduce the 
distance to the target vehicle to facilitate 
overtaking, without exceeding the speed 
setting.
Steering-mounted controls 
 
 
 
1. Selection of cruise control alone or Highway 
Driver Assist (depending on version)/
Deselection
2. Switch on/pause cruise control at the 
previously saved speed setting
Confirmation of vehicle restart after automatic 
stop
3. Increase/Decrease the speed setting (if 
cruise control activated)
Activation of cruise control in progress (if 
cruise control deactivated)
Display and configuration of the inter-vehicle 
distance setting
4. Activation of cruise control in progress
Use the speed suggested by the Road signs 
recognition
For more information on the  Road signs 
recognition , refer to the corresponding section.   
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11 5
Driving
6The system refuses to activate cruise control, as 
the necessary conditions are not fulfilled.
Stop & Go function
The system has brought the 
vehicle to a complete stop.
(green)/(green)
Within 3 seconds of stopping, the vehicle 
gradually and automatically begins moving 
again.
Beyond 3 seconds of stopping, the driver must 
accelerate or press  2-I I> to move off.
If the driver takes no action after the 
vehicle has been stopped, the electric 
parking brake is applied automatically after 
about 5 minutes.
While the vehicle is immobilised, the 
following recommendations apply:
–
 
The driver should not leave the vehicle.
–
 
Do not open the boot.
–
 
Do not drop off or pick up passengers.
–
 
Do not engage reverse gear
 .
When restarting the vehicle, beware of 
cyclists, pedestrians or animals who are 
not taken into account by the system.
The driver must monitor their surroundings.
Operating limits
Cruise control operates by day and night, in dry 
weather or moderate rainfall.
Certain situations cannot be managed by the 
system and require driver intervention.
Cases not taken into account by the system:
–
 
Pedestrians, cyclists, animals.
–
 
Stationary vehicles (e.g.
   traffic jams, 
breakdown).
 
 
– 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.   
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Driving
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 .
The function comprises the "Coffee Break Alert" 
system 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.
It is configured in 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.
As soon as the speed of the vehicle  drops below 43   mph (70   km/h), the 
system goes into standby.
Driving time starts being counted again once 
the speed reaches above 43
  mph (70   km/h).
Driver Attention Warning 
 
The system assesses the driver's level of alertness, fatigue and distraction by 
identifying trajectory changes in relation to the 
lane markings.
To do this, the system uses a camera, placed on 
the upper part of the windscreen.
This system is particularly suited to fast roads 
(speed higher than 43 mph (70
  km/h)).
At a first alert level, the driver is warned by 
the message "Caution!“, accompanied by an 
audible signal.
After three first-level alerts, the system triggers 
a further alert with the message " Driving    
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Driving
6This system detects and signals the proximity of 
obstacles (e.g.  pedestrian, vehicle, tree, barrier) 
using sensors located in the bumper.
Rear parking sensors
â–º Engage reverse gear to start  the system 
(confirmed by an audible signal).
The system is switched off when reverse gear is 
disengaged.
Audible assistance 
 
The system signals the presence of obstacles 
which are both within the sensors’ detection zone 
and in the vehicle path defined by the direction of 
the steering wheel.
 
 
Depending on version, in the example shown, 
only the obstacles present in the shaded area 
will be signalled by the audible assistance.
The proximity information is given by an 
intermittent audible signal, the frequency of 
which increases as the vehicle approaches the 
obstacle.
When the distance between the vehicle and 
the obstacle becomes less than about thirty 
centimetres, the audible signal becomes 
continuous.
The sound emitted by the speaker (right or 
left) indicates the side on which the obstacle is 
located.
Adjusting the audible signalPressing this button in the touch 
screen opens the window for 
adjusting the volume of the audible signal.
Visual assistance 
 
This supplements the audible signal, without 
taking account of the vehicle's trajectory, by 
displaying bars on the screen that represent the 
distance between the obstacle and the vehicle 
(white: more distant, orange: close, red: very 
close).
When the obstacle is very close, the "Danger" 
symbol is displayed on the screen.
Front parking sensors
Supplementing the rear parking sensors, the 
front parking sensors are triggered when an 
obstacle is detected in front and the speed of the 
vehicle is below 6 mph (10
  km/h).
Front parking sensor operation is suspended if 
the vehicle stops for more than three seconds in 
forward gear, if an obstacle is no longer detected 
or the vehicle speed exceeds 6
  mph (10   km/h).
The sound emitted by the speaker (front or rear) locates the obstacle relative to 
the vehicle, whether in front of or behind it on 
its path.
Deactivation/Activation
It is configured in the ADAS touch screen 
application.
If the function is deactivated, this indicator 
lamp lights up on the instrument panel.
The system status is saved when the ignition is 
switched off.
 
    
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Practical information
Compatibility of fuels  
Petrol fuels conforming to the EN228 standard 
containing up to 5% and 10% ethanol 
respectively.
The only petrol fuel additives authorised for use are those that meet the B715001 
standard.
Travelling abroad
Certain fuels could damage your vehicle’s 
engine.
In certain countries, the use of a particular 
fuel may be required (specific octane rating, 
specific trade name, etc.) to ensure correct 
operation of the engine.
For all additional information, consult a dealer.
Refuelling
Fuel tank capacity: approximately 53 litres 
(Petrol) or 40 litres (Rechargeable hybrid).
Reserve level: approximately 6 litres.
Low fuel level
When the low fuel level is reached, this 
warning lamp lights up on the instrument 
panel, accompanied by the display of a message 
and an audible signal. When it first comes on, 
about 6 litres of fuel remain.
Until sufficient fuel is added, this warning lamp 
appears every time the ignition is switched on, 
accompanied by the message and the audible 
signal. When driving, this message and audible 
signal are repeated with increasing frequency as 
the fuel level drops towards  0.
You must refuel as soon as possible to avoid 
running out of fuel.
A small arrow by the warning lamp  indicates on which side of the vehicle the 
fuel filler flap is located.
Stop & Start
Never refuel with the engine in STOP 
mode; you must switch off the ignition.
Refuelling
Any addition of fuel must be in quantities of at 
least 10 litres, in order to be registered by the 
fuel gauge.
Opening the filler flap may create a noise caused 
by an inrush of air. This vacuum is entirely 
normal, resulting from the sealing of the fuel 
system.
The filler cap is built into the filler
  flap or must be 
unscrewed (depending on version).
To refuel in complete safety:
â–º
 
Y
 ou must switch off the engine.
 
 
â–º To open the filler flap, press the flap opening 
button or press the rear edge of the filler flap 
(depending on version).
Rechargeable hybrid vehicles
After pressing the button, it may take a 
few minutes for the filler flap to open.
If the flap becomes stuck, press and hold the 
button for more than 3
  seconds.
â–º
 
T
ake care to select the pump that delivers the 
correct fuel type for the vehicle's engine (see a 
reminder label on the inside of the filler flap).
 
 
â–º Turn the filler cap to the left, remove it 
and place it on its support on the filler flap 
(depending on version).
â–º
 
Insert the filler nozzle and push it in as far as 
possible before starting to refuel (to minimise the 
risk of splashing).    
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Practical information
The control unit can be reset by simultaneously disconnecting the chargi\
ng connector and the wall socket.
Then, reconnect the wall socket first. For more information, refer to the handbook.
Charging the traction 
battery (Rechargeable 
hybrid)
For a full charge, follow the charging procedure 
without interrupting it, until it stops automatically. 
Charging may be performed either immediately 
(by default) or deferred.
Deferred charging is set via the touch 
screen or the  MyCitroën App application.
When the vehicle is connected, the following 
information is displayed on the instrument panel:
–
 
T
raction battery charge status (%).
–
 
Remaining range (miles or km).
–
 
Estimated charging time (calculation may take 
a few seconds).
–
 
Charging speed (miles or km gained per hour).
After the instrument panel has been put into 
standby mode, this information can be displayed 
again by unlocking the vehicle or opening a door
.
It is also possible to monitor the charging 
progress using the MyCitroën App 
application.
For more information on  Remote functions, 
refer to the corresponding section.
Lounge mode
When the vehicle is connected, it is 
possible to switch on the ignition and use 
certain functions such as the audio and 
telematics system and the air conditioning 
system for several hours.
Low load / Driving
Driving when the charge level of the 
traction battery is too low can lead to the 
vehicle breaking down and can lead to 
accidents or serious injuries. ALWAYS make 
sure the traction battery has a sufficient 
charge level.
Low load / Parking
If the outside temperature is negative, 
it is recommended not to park your vehicle 
outside for several hours at a low load (less 
than 20%).
Vehicle in storage for more than 1 
month
In the event of a long period of non-use of 
the vehicle (beyond 4 weeks) without the 
possibility of charging when restarting, the 
self-discharge may make it impossible to 
restart if the traction battery charge level 
is a low or very low, especially at negative 
ambient temperatures. ALWAYS make sure 
that the traction battery has a charge between 
20% and 40% if you do not plan to use your 
vehicle for several weeks.
Do not connect the charging cable.
Always park the vehicle in a place with 
temperatures between -10°C and 30°C 
(parking in a place with extreme temperatures 
can damage the traction battery).
Refer to the Accessory battery 
(Rechargeable hybrid) section for the 
battery disconnection procedure.
Precautions
Rechargeable hybrid vehicles have 
been developed in accordance with the 
recommendations for maximum electromagnetic 
field limits established by the ICNIRP 
(International Commission on Non-Ionizing 
Radiation Protection - 1998 Guidelines).
Wearers of pacemakers or equivalent 
devices should consult a doctor to 
enquire about any applicable precautionary 
measures, or contact the manufacturer of their 
implanted electronic medical device to check that 
it is guaranteed to operate in an environment 
compliant with the ICNIRP guidelines.   
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Practical information
7If in doubt, during charging, do not remain 
inside or near the vehicle, near the charging 
cable or the charging unit, even for a short time.
Before charging
Depending on the context:
â–º
 
Have a professional check that the 
electrical system to be used complies with 
applicable standards and is compatible with 
the vehicle.
â–º
 
Have a professional electrician install 
a dedicated domestic power socket or 
accelerated charging unit (W
allbox) 
compatible with the vehicle.
Use the charging cable supplied with the 
vehicle.
For more information, contact a CITROËN 
dealer or a qualified workshop.
During charging
As a safety measure, the engine will 
not start if the charging cable is plugged into 
the connector on the vehicle. A warning is 
displayed on the instrument panel.
While charging is in progress, unlocking the 
vehicle will cause the charging to stop.
If no action is taken on one of the openings 
(door or boot) or on the charging nozzle, the 
vehicle will lock again after 30 seconds and 
charging will resume automatically.
Never work under the bonnet:
–
 
Some areas remain very hot, even an hour 
after charging ends - risk of burns!
– The fan may start at any time - risk of cuts 
or strangulation!
After charging
Check that the charging flap is closed.
Do not leave the cable connected to the 
domestic power socket - risk of short-circuit 
or electrocution in the event of contact with or 
immersion in water!
Charging procedure
Connection
â–º Before  charging, check that the gear selector 
is in mode P and the ignition is off, otherwise 
charging is impossible.
â–º
 
Open the charging flap by pressing the top 
right push-button, and check that there are 
no foreign bodies on the vehicle's charging 
connector
.
The light guides in the flap come on white.
Domestic charging (mode 2) 
 
 
 
â–º First, connect the charging cable from the 
control unit to the domestic socket.
When the connection is made, all of the indicator 
lamps on the control unit light up, then only the 
POWER
 indicator lamp remains on in green.
â–º
 
Remove the protective cover from the 
charging nozzle.
â–º
 
Insert the nozzle into the vehicle's charging 
connector
.
The start of charging is confirmed by the flashing 
of the green light guides in the flap and the 
flashing of the
  CHARGE   indicator lamp in green 
on the control unit.
If this is not the case, charging has not started; 
restart the procedure, ensuring that all of the 
connections are properly established.
The red indicator lamp in the flap comes on to 
indicate that the nozzle is locked.
Accelerated charging (mode 3) 
    
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Practical information
Observe the legislation in force in your 
country relating to the use of snow 
chains and maximum authorised speeds.
Use only chains designed to be fitted to the type 
of wheel fitted to the vehicle:
Original tyre size Maximum link size 215/65 R17 9 mm
205/55 R19 9 mm
For more information, contact a CITROËN dealer 
or a qualified workshop.
Installation tips 
â–º To fit the snow chains during a journey, stop 
the vehicle on a flat surface at the side of the 
road.
â–º
 
Apply the parking brake and position any 
wheel chocks under the wheels to prevent 
movement of the vehicle.
â–º
 
Fit the snow chains following the instructions 
provided by the manufacturer
.
â–º
 
Move off gently and drive for a few moments, 
without exceeding 31
  mph (50   km/h).
â–º
 
Stop the vehicle and check that the snow 
chains are correctly tightened.
It is strongly recommended that you 
practise fitting the snow chains on a level 
and dry surface before setting off.
Avoid driving with snow chains on roads  that have been cleared of snow to avoid 
damaging the vehicle's tyres and the road 
surface. If the vehicle is fitted with alloy 
wheels, check that no part of the chain or its 
fixings is in contact with the wheel rim.
Energy economy mode
This system manages the duration of use of 
certain functions, in order to conserve a sufficient 
level of charge in the battery with the ignition off.
After switching off the engine, you can still 
use functions such as the audio and telematic 
system, the wipers and the dipped beam 
headlamps or courtesy lamps, for a combined 
duration of approximately 40 minutes.
Selecting the mode
A confirmation message is displayed when 
energy economy mode is entered, and the active 
functions are placed on standby.
If a telephone call is in progress at the 
time, it will be maintained for around 10 
minutes via the audio system’s hands-free 
system.
Exiting the mode
These functions are automatically reactivated the 
next time the vehicle is used.
To restore the use of these functions 
immediately, start the engine and let it run:
– For less than 10 minutes, to use the 
equipment for approximately 5 minutes.
–
 
For more than 10 minutes, to use the 
equipment for approximately 30 minutes.
Let the engine run for the specified duration to 
ensure that the battery charge is sufficient.
T
o recharge the battery, avoid repeatedly or 
continuously restarting the engine.
A flat battery prevents the engine from  starting.
For more information on the  12
  V battery, 
refer to the corresponding section.
Load reduction mode
This system manages the use of certain 
functions according to the level of charge 
remaining in the battery.
When the vehicle is being driven, the load 
reduction function temporarily deactivates certain 
functions, such as the air conditioning and the 
heated rear screen.
The deactivated functions are reactivated 
automatically as soon as conditions permit.
Bonnet
Stop & Start
Before doing anything under the bonnet, 
you must switch off the ignition to avoid any    
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Practical information
7risk of injury resulting from an automatic 
change to START mode.
Rechargeable hybrid vehicles
Before any work is carried out under the 
bonnet, it is essential to switch off the ignition 
and disconnect the nozzle from the charging 
connector if it is plugged in, check that the 
READY indicator lamp is off on the instrument 
panel and wait 4 minutes - risk of serious 
injury!
The location of the interior bonnet  release lever prevents the bonnet being 
opened when the left-hand front door is 
closed.
When the engine is hot, handle the 
exterior safety catch and the bonnet stay 
with care (risk of burns), using the protected 
area.
When the bonnet is open, take care not to 
damage the safety catch.
Do not open the bonnet under very windy 
conditions.
Cooling of the engine when stopped
The engine cooling fan may start after 
the engine has been switched off.
Take care with objects or clothing that 
could be caught in the blades of the fan!
Opening 
 
 
 
â–º From the  inside: pull the control lever, 
located on the left below the dashboard, towards 
you.
 
 
â–º From the outside:  lift the safety catch and 
raise the bonnet.
â–º
 
Unclip the stay from its housing and place it 
in the support slot to hold the bonnet open.
Closing
â–º Hold the bonnet and pull out the stay from the 
support slot.
â–º
 
Clip the stay in its housing.
â–º
 
Lower the bonnet and release it near the end 
of its travel.
â–º
 
Pull on the bonnet and check that it is locked 
correctly
.
Because of the presence of electrical 
equipment under the bonnet, it is strongly 
recommended that exposure to water (rain, 
washing, etc.) be limited.