headlamp CITROEN C5 2021 User Guide
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Lighting and visibility
4Activation/Deactivation
It is configured in the Settings > Vehicle 
touch screen application.
The state of the system is stored when the 
ignition is switched off.
When the system detects thick fog, it 
temporarily deactivates the function.
Operation
If the ambient light level is very low and traffic 
conditions permit:
– The main beam headla mps 
come on automatically. These 
indicator lamps come on on the instrument 
panel.
If the ambient light level is sufficient and/or the 
traffic conditions do not allow the main beam 
headlamps to be lit:
– The dipped beam head lamps 
remain lit. These indicator lamps 
come on on the instrument panel.
The function is deactivated if the foglamps 
are switched on or if the system detects poor 
visibility conditions (e.g.
  fog, heavy rain, 
snowfall).
When the foglamps are switched off or when the 
visibility conditions become favourable again, the 
function is automatically reactivated.
This indicator lamp goes out when the  function is deactivated.
If the function is selected but the display 
on the instrument panel and the alerts are 
not available, the indicator lamp comes on in 
grey.
Pause
If the situation requires a change of headlamp 
beam, the driver can take over at any time.
►
 
Switch the headlamps manually between 
dipped and main beam to pause the function.
If the "AUT
O" and "Dipped beam" indicator 
lamps were on, the system changes to main 
beam.
If the "AUTO" and "Main beam" indicator
  lamps 
were on, the system changes to dipped beam.
►
 
T
 o reactivate the function, once again switch 
the headlamps manually between dipped and 
main beam.
Malfunction
If a malfunction occurs with the system or 
the camera, this warning lamp is 
displayed on the instrument panel, accompanied 
by an audible signal and a message.
Have it checked by a CITROËN dealer or a 
qualified workshop.
Cornering lighting
This system makes use of the beam from a front 
foglamp to illuminate the inside of a bend, when 
the main or dipped beam headlamps are on and 
the vehicle speed is below 25 mph (40 km/h) 
(urban driving, winding road, junctions, parking 
manoeuvres).
 
 
Without/With cornering lighting
Activation/Deactivation
It is configured in the Settings > Vehicle 
touch screen application.
Switching on/off
This system starts: 
–  when the corresponding direction indicator is 
switched on. 
or
–
 
from a certain angle of rotation of the steering 
wheel. 
It becomes inactive: 
–
 
below a certain angle of rotation of the 
steering wheel. 
–
 
above approximately 25 mph (40 km/h). 
–
 
when reverse gear is engaged.
Wiper control stalk
Before operating the wipers in wintry 
conditions, clear any snow, ice or frost    
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Driving
6Towing
Driving with a trailer places greater 
demands on the towing vehicle and 
particular care must be taken.
Do not exceed the maximum towable 
weights.
At altitude: reduce the maximum load by 
10% per 1,000 metres of altitude; the lower 
air density at high altitudes decreases engine 
performance.
New vehicle: do not tow a trailer until the 
vehicle has 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
► Distribute 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.
Tyres
► Check the tyre pressures of the towing 
vehicle and of the trailer , observing the 
recommended pressures.
Lighting
► 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 causes the coolant 
temperature to increase. The maximum towable 
load depends on the gradient and the exterior 
temperature. The fan’s cooling capacity does not 
increase with engine speed.
►
 
Reduce speed and lower the engine speed to 
limit the amount of heating produced.
►
 
Pay constant 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
Using the engine brake is recommended to limit 
the overheating of the brakes. Braking distances 
are increased when towing a trailer.
Side wind
Bear in mind that the vehicle will be more 
susceptible to wind when towing.
Anti-theft protection
Electronic immobiliser
The keys contain a code, which must be 
recognised by the vehicle before starting is 
possible.
If the system malfunctions, indicated by the 
display of a message, the engine will not start.
Contact a CITROËN dealer.
Starting/Switching off the 
engine with Keyless Entry 
and Starting
The electronic key must be present in the  passenger compartment.
If the electronic key is not detected, a 
message is displayed.
Move the electronic key so that the engine 
can be started or switched off.    
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Driving
the speed to climatic conditions, traffic and 
the state of the road.
It is the driver's responsibility to constantly 
monitor traffic conditions, assess the distance 
and relative speed of other vehicles, and 
anticipate their manoeuvres before using the 
direction indicator and changing lanes.
These systems do not make it possible to 
exceed the laws of physics.
Driving aids
You should hold the steering wheel with 
both hands, always use the door and interior 
mirrors, always leave your feet close to the 
pedals and take a break every 2 hours.
Manoeuvring aids
The driver must always check the 
surroundings of the vehicle before and during 
the whole manoeuvre, in particular using the 
mirrors.
Radar(s)
The operation of the radar(s), along with 
any associated functions, may be affected 
by the accumulation of dirt (e.g.
  mud, ice), 
in poor weather conditions (e.g.
  heavy rain, 
snow), or if the bumpers are damaged.
If the front bumper is to be repainted, contact 
a CITROËN dealer or a qualified workshop; 
certain types of paint could interfere with the 
operation of the radar(s).
 
 
Driving aids camera
This camera and its associated functions 
may be impaired or not work if the windscreen 
area in front of the camera is dirty, misty, 
frosty, covered with snow, damaged or 
masked by a sticker.
In humid and cold weather, demist the 
windscreen regularly.
Poor visibility (inadequate street lighting, 
heavy rain, thick fog, snowfall), dazzle 
(headlamps of an oncoming vehicle, low sun, 
reflections on a damp road, leaving a tunnel, 
alternating shade and light) can also impair 
detection performance.
In the event of a windscreen replacement, 
contact a CITROËN dealer or a qualified 
workshop to recalibrate the camera; 
otherwise, the operation of the associated 
driving aids may be disrupted.
Other cameras
The images from the camera(s) 
displayed on the touch screen or on the 
instrument panel may be distorted by the 
terrain.
In the presence of areas in shade, or in 
conditions of bright sunlight or inadequate 
lighting, the image may be darkened and with 
lower contrast.
Obstacles may appear further away than they 
actually are.
Sensors
The operation of the sensors, as well as 
any associated functions, may be disrupted 
by noise pollution such as that emitted by 
noisy vehicles and machinery (e.g. lorries, 
pneumatic drills), by the accumulation of 
snow or dead leaves on the road or in the 
event of damaged bumpers and mirrors.
When reverse gear is engaged, an audible 
signal (long beep) indicates that the sensors 
may be dirty.
A front or rear impact to the vehicle can 
upset the sensors’ settings, which is not 
always detected by the system: distance 
measurements may be distorted.
The sensors do not systematically detect 
obstacles that are too low (pavements, studs) 
or too thin (trees, posts, wire fences).
Certain obstacles located in the sensors’ blind 
spots may not be detected or may no longer 
be detected during the manoeuvre.
Certain materials (fabrics) absorb sound 
waves: pedestrians may not be detected.   
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11 6
Driving
– 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
.
–
 
In case of a brake lamp failure.
If the vehicle has undergone any of the 
following modifications, do not use the 
system:
–
 
Carrying long objects on roof bars.
–
 
Towing.
–
 
Front end of the vehicle modified (for 
example by adding long-range headlamps or 
painting the front bumper).
–
 
Obstructed radar
 .
Malfunction
In the event of a malfunction, dashes are 
displayed (orange) 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 .
 
 
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
Lane positioning assist is automatically activated, 
after selecting
  Highway Driver Assist   mode.
For more information on Highway Driver Assist, 
refer to the corresponding section.
The selection is confirmed by the display of the 
symbols on the instrument panel, 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 ASSIST button again (confirmed by the 
disappearance of the Driving aids mini-view on 
the instrument panel).
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 off upon activation of the 
system.
Cruise control
The driver must hold the steering wheel properly.
When cruise control 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.    
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11 9
Driving
6MessagesDriving situations
"Hold the steering wheel "
(framed in red) Simultaneous loss of cruise control and lane positioning assist.
Operating limits
The system may issue an alert when the 
vehicle is travelling on a long, straight 
road with smooth road surface even if the 
driver thinks they are holding the steering 
wheel correctly.
The system may not operate or may produce 
unsuitable corrections to the steering in the 
following situations:
–
 
W
earing thick gloves (with Highway Driver 
Assist 2.0).
–
 
Poor visibility (insufficient road lighting, 
snowfall, rain, fog).
–
 
Dazzle (headlamps of an oncoming vehicle, 
low sun, reflections on a wet road surface, 
leaving a tunnel, alternating light and shade).
–
 
Windscreen area in front of the camera 
dirty
, misted up, frost-covered, snow-covered, 
damaged or covered by a sticker.
–
 
Lane markings eroded, partially hidden (snow
 , 
mud) or multiple (roadworks, surface joints).
–
 
T
ravelling in a tight bend.
–
 
Winding roads.
–
 
Road surface repairs.
Risk of undesirable operation
The system should be deactivated in the  following situations:
–
 
When changing a wheel or working near a 
wheel.
–
 
T
owing or with a bicycle carrier on a towing 
device, especially with trailer not plugged in or 
not approved.
–
 
Adverse weather conditions.
–
 
Road with low grip (risk of aquaplaning, 
snow
, ice).
–
 
Road works and toll areas.
–
 
Driving on racing circuits.
–
 
Driving on a rolling road.
Malfunction
In the event of a malfunction, the 
Service warning lamp comes on 
and this (orange) symbol appears 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.
Speed adjustment during 
cornering
(with Highway Driver Assist 2.0)
For more information, refer to the 
General recommendations on the use 
of driving and manoeuvring aids  and the 
Cruise control - particular 
recommendations.
In addition to Adaptive Cruise Control with 
Stop&Go and Lane positioning assist systems, 
this system regulates the speed of the vehicle in 
bends.
It adapts the speed, with or without target 
vehicle, in certain bends on motorways or main 
roads.
The speed is only adjusted if the vehicle speed is 
not compatible with the angle of the bend.
The reduction in speed on a bend is adapted 
to the situation in order to ensure the bend is 
navigated comfortably.
In the presence of a target vehicle, it also 
maintains the inter-vehicle distance.
This system does not manage bends that  are too tight ("hairpin bend" for example).   
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Driving
6DisplayComments 
 
(green)/(broken green)/(green) Confirmation request for a lane change manoeuvre. 
 
(green)/(broken green)/(green)Lane change manoeuvre in progress. 
 
(green)/(continuous orange)/(green) Refused lane change manoeuvre.
(orange)
"Lane change interrupted: stay in the 
lane"
Brake, accelerate or use the steering wheel, 
depending on the context.
(blue)
"Lane change cancelled"
Continuation of Lane positioning assist and 
Adaptive cruise control systems.
(red)
"Take back control" The system cannot manage the current driving 
situation.
Operating limits
The system may not work in the following 
situations:
–
 
W
 earing thick gloves.
–
 
Poor visibility (insufficient road lighting, 
snowfall, rain, fog).
–
 
Dazzle (headlamps of an oncoming vehicle, 
low sun, reflections on a wet road surface, 
leaving a tunnel, alternating light and shade).
– Windscreen area in front of the camera 
dirty , misted up, frost-covered, snow-covered, 
damaged or covered by a sticker.
–
 
Lane markings eroded, partially hidden (snow
 , 
mud) or multiple (roadworks, surface joints).
–
 
T
 ravelling in a tight bend.
–
 
Winding roads.
–
 
Road surface repairs.
The system must not be activated in the following situations:
–
 
When changing a wheel or working near a 
wheel.   
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Practical information
– The towball must not be able to move in 
its carrier; test by attempting to shake it with 
your hand.
If the towball is not locked, the trailer can 
become detached - risk of an accident!
During use
Never release the locking system with a 
trailer or load carrier on the towball.
Never exceed the maximum authorised 
weight for the vehicle - the Gross Train 
Weight or GTW.
Always comply with the maximum authorised 
load on the towing device: if it is exceeded, 
this device may become detached from the 
vehicle - risk of an accident!
Before driving, check the headlamp height 
adjustment and check that the lamps on the 
trailer operate correctly.
For more information on  Headlamp height 
adjustment, refer to the corresponding 
section.
After use
When travelling without a trailer or 
load carrier, remove the towball and fit the 
protective plug into the carrier, to provide 
clear visibility of the number plate and/or its 
lighting.
Fitting the towball 
 
► Below the rear bumper , remove the protective 
plug 2 from the carrier 1.
►
 
Insert the end of the towball 
 5 into the carrier 
1 and push it upwards; it will lock into position 
automatically.
 
 
► The wheel  6  rotates a quarter turn anti-
clockwise; take care to keep your hands clear!
 
 
► Check that the mechanism has correctly 
locked into place and that the green mark on 
the wheel is aligned with the white mark on the 
towball (position  A
).
►
 
Close the lock  7
 using the key.
►
 
Remove the key
 . The key cannot be removed 
while the lock is open.
►
 
Lower the cap to protect the lock.    
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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 
► To fit the snow chains during a journey, stop 
the vehicle on a flat surface at the side of the 
road.
►
 
Apply the parking brake and position any 
wheel chocks under the wheels to prevent 
movement of the vehicle.
►
 
Fit the snow chains following the instructions 
provided by the manufacturer
.
►
 
Move off gently and drive for a few moments, 
without exceeding 31
  mph (50   km/h).
►
 
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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In the event of a breakdown
8
 
► Fit the wheel on the hub.
►  Screw in the bolts by hand as far as possible.
►
 
Pre-tighten the security bolt using the 
wheelbrace
 
5
  equipped with a security socket  
2
 .
►
 
Pre-tighten the other bolts using the 
wheelbrace
 
5
  only.
 
 
► Lower the vehicle again fully .
►  Fold jack   6 and remove it.
 
 
► Tighten the security bolt using the 
wheelbrace 5  equipped with a security socket  2 .
►
 
T
 ighten the other bolts using the 
wheelbrace
 
5
  only.
►
 
Refit the bolt covers to each of the bolts 
(depending on equipment).
►
 
Store the tools.
After changing a wheel
The punctured wheel cannot be stored in place 
of the spare wheel. Place it in the boot.
With a "space-saver" type spare wheel
Deactivate certain driving aid functions 
(Active Safety Brake, Adaptive cruise control, 
etc.).
Do not exceed the maximum authorised 
speed of 50 mph (80   km/h).
Driving with more than one "space-saver" 
type spare wheel is prohibited.
Visit a CITROËN dealer or a qualified 
workshop.
Have the tightening of the spare wheel's bolts 
and its tyre pressure checked.
Have the punctured tyre examined. After 
inspection, the technician will advise you on 
whether the tyre can be repaired or if it must 
be replaced.
Changing a bulb
In some weather conditions (e.g. low 
temperature or humidity), misting on the 
internal surface of the glass of the headlamps 
and rear lamps is normal, and will disappear 
after the lamps have been on for a few 
minutes.
Never look too closely at the light beam 
of LED technology lamps - risk of serious 
eye injury!
 
    
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In the event of a breakdown
The headlamps have polycarbonate lenses with a protective coating:
–
 
Do not clean them with a dry or abrasive 
cloth, nor with detergent or solvent 
products.
–
 
Use a sponge and soapy water or a pH 
neutral product.
–
 
When using a high-pressure washer on 
persistent marks, do not keep the lance 
directed towards the headlamps, lamps or 
their edges for too long, so as not to damage 
their protective coating and seals.
Light-emitting diode (LED) 
headlamps and lamps
Replacement of this type of bulb
Contact a CITROËN dealer or a qualified 
workshop.
Do not touch LED or Full LED
  technology 
headlamps - risk of electrocution!
Front lamps
Model with 
LED   technology   headlamps
 
 
1.Daytime running lamps/Direction indicators
2. Dipped beam headlamps
3. Main beam headlamps
4. Daytime running lamps
5. Foglamps
Rear lamps 
 
1.Direction indicators (LED)
2. Brake lamps (LED) 3.
Reversing lamps
4. Foglamps
Reversing lamps/Foglamps
► Identify the defective bulb then open the 
cover located on the tailgate trim.
 
 
► Using a thin, flat blade screwdriver , unclip the 
plastic cover.
►
 
Unscrew the nuts and remove them.
►
 
From the outside, carefully remove the lamp 
by pulling it to the rear
.
►
 
Disconnect the lamp unit connector
 .
►
 
T
 urn the bulb holder of the faulty lamp unit a 
quarter turn anti-clockwise and pull it out.
►
 
Remove the bulb and replace it.