maintenance CITROEN C4 2020 User Guide

158
Practical information
AdBlue® (BlueHDi)
An alert is triggered when the reserve level is
reached.
For more information on the Indicators and in
particular the AdBlue range indicators, refer to
the corresponding section.
To avoid the vehicle being immobilised in
accordance with regulations, you must top up the
AdBlue tank.
For more information on AdBlue
® (BlueHDi),
and in particular the supply of AdBlue, refer to
the corresponding section.
Checks
Unless otherwise indicated, check these
components in accordance with the
manufacturer's service schedule and according
to your engine.
Otherwise, have them checked by a CITROËN
dealer or a qualified workshop.
Only use products recommended by
CITROËN or products of equivalent
quality and specification.
In order to optimise the operation of
components as important as those in the
braking system, CITROËN selects and offers
very specific products.
12 V battery
The battery does not require any maintenance.
Check regularly that the terminals are correctly
tightened (versions without quick-release
terminals) and that the connections are clean.
For more information on the precautions
to take before any work on the 12 V
battery, refer to the corresponding section.
Versions equipped with Stop & Start are
fitted with a 12 V lead-acid battery of
specific technology and specification.
Its replacement should be carried out only by
a CITROËN dealer or a qualified workshop.
Passenger compartment
filter
Depending on the environment and the
use of the vehicle (e.g. dusty atmosphere,
city driving), change it twice as often, if
necessary .
A clogged passenger compartment filter
can adversely affect air conditioning
system performance and generate
undesirable odours.
Air filter
Depending on the environment and the
use of the vehicle (e.g. dusty atmosphere,
city driving), change it twice as often, if
necessary .
Oil filter
Change the oil filter each time the engine
oil is changed.
Particle filter (Diesel)
The start of clogging of the particle filter is
indicated by the temporary lighting of this
warning lamp, accompanied by an alert
message.
As soon as the traffic conditions permit,
regenerate the filter by driving at a speed of at
least 37
mph (60 km/h) until the warning lamp
goes off.
Following prolonged operation of the
vehicle at very low speed or at idle, you
may, in exceptional circumstances, notice
water vapour coming from the exhaust while
accelerating. These emissions have no
impact on the vehicle’s behaviour and the
environment.
New vehicle
During the first few particle filter
regeneration operations, you may notice a
"burning" smell. This is perfectly normal.

159
Practical information
7Manual gearbox
The gearbox does not require any maintenance (no oil change).
Automatic gearbox
The gearbox does not require any maintenance (no oil change).
Manual parking brake
If you notice excessive brake lever travel
or decreased effectiveness, the parking
brake must be adjusted, even between two
services.
This system must be checked by a CITROËN
dealer or a qualified workshop.
Electric parking brake
This system does not require any routine servicing. However, in the event of a
problem, do not hesitate to have the system
checked by a CITROËN dealer or a qualified
workshop.
For more information on the Electric
parking brake, refer to the
corresponding section.
Brake pads
Brake wear depends on the style of
driving, particularly in the case of vehicles
used in town, over short distances. It may be
necessary to have the condition of the brakes
checked, even between vehicle services.
Unless there is a leak in the circuit, a drop in the
brake fluid level indicates that the brake pads
are worn.
After washing the vehicle, moisture, or in wintry conditions, ice can form on the
brake discs and pads: braking efficiency may
be reduced. Gently dab the brakes to dry and
defrost them.
Brake disc/drum wear
For any information on checking brake
disc/drum wear, contact a CITROËN
dealer or a qualified workshop.
Wheels and tyres
The inflation pressure of all tyres, including the spare wheel, must be
checked on "cold” tyres.
The pressures indicated on the tyre pressure
label are valid for "cold" tyres. If you have driven
for more than 10 minutes or more than 6 miles
(10 kilometres) at over 31 mph (50
km/h), add
0.3 bar (30 kPa) to the values indicated on the
label.
Under-inflation increases energy
consumption. Non-compliant tyre
pressures cause tyres to wear prematurely
and have an adverse effect on the vehicle's
road holding - risk of accident! Driving with worn or damaged tyres reduces the
braking and road holding performance of the
vehicle. Regularly check the condition of the
tyres (tread and sidewalls) and rims as well as
the presence of the valve caps.
When the wear indicators no longer appear set
back from the tread, the depth of the grooves is
less than 1.6 mm; replace the tyres as soon as
possible.
Using different size wheels and tyres from those
specified can affect the lifetime of tyres, wheel
rotation, ground clearance, the speedometer
reading and have an adverse effect on road
holding.
Fitting different tyres on the front and rear axles
can cause the ESC to mistime.
Always mark the direction of rotation on the tyres
that will be stored when fitting winter or summer
tyres. Store them in a cool, dry place and away
from direct exposure to the sun's rays.
Winter or 4-seasons tyres can be
identified by this symbol on their
sidewalls.
Shock absorbers
It is not easy for drivers to detect when
shock absorbers are worn. Nevertheless,
the shock absorbers have a major impact on
road holding and braking performance.
For your safety and driving comfort, it is
important to have them regularly checked by a
CITROËN dealer or a qualified workshop.

162
Practical information
Changing to free-wheeling
In certain situations, it is necessary to put the
vehicle into free-wheeling mode (e.g. towing, on
a rolling road, automatic car wash (Wash mode),
rail or sea transport).
The procedure varies according to the type of
gearbox and parking brake.
Never leave the vehicle unattended with
the vehicle into free-wheeling mode.
Keyless Entry and Start
You must not depress the brake pedal
while switching the ignition on again, then
switching it off. If you do, the engine will start,
requiring you to restart the procedure.
/
Release procedure
► With the vehicle stationary and the engine
running, depress the brake pedal and select
mode
N.
Within 5
seconds:
►

Depress and hold the brake pedal, then
observe this order: switch off the engine and
move the push selector forwards or backwards.
►


Release the brake pedal, then switch on the
ignition.
►


Place your foot on the brake and press the
electric parking brake control to release it.
► Release the brake pedal, then switch off the
ignition.
A message is displayed on the instrument panel to confirm the unlocking
of the wheels for 15
minutes.
After 15 minutes or reverting to normal
operation
► While depressing the brake pedal, restart the
engine and select mode P .
Advice on care and maintenance
General recommendations
Observe the following recommendations to avoid
damaging the vehicle.
Exterior
Never use a high-pressure jet wash in
the engine compartment - risk of
damaging the electrical components!
Do not wash the vehicle in bright sunshine or
extremely cold conditions.
When washing the vehicle in an
automatic roller-brush car wash, be sure
to lock the doors and, depending on version,
move the electronic key away.
When using a pressure washer, keep the jet
nozzle at a minimum distance of 30 cm from
the vehicle (particularly when cleaning areas
containing chipped paint, sensors or seals).
Promptly clean up any stains containing
chemicals liable to damage the vehicle's
paintwork (including tree resin, bird
droppings, insect secretions, pollen and tar).
Depending on the environment, clean the
vehicle frequently to remove salty deposits
(in coastal areas), soot (in industrial areas)
and mud/salts (in wet or cold areas). These
substances can be highly corrosive.
Contact a CITROËN dealer or a qualified
workshop for advice on removing stubborn
stains requiring special products (such as tar
or insect removers).
Preferably, have paint touch-ups performed
by a CITROËN dealer or a qualified
workshop.
Interior
When washing the vehicle, never use a
water hose or high-pressure jet to clean
the interior.
Liquids carried in cups or other open
containers can spill, presenting a risk of
damage to the instruments and controls and
the controls located on the centre console. Be
vigilant!

163
Practical information
7To clean instrument panels, touch screens
or other displays, wipe gently with a soft,
dry cloth. Do not use products (e.g. alcohol,
disinfectant) or soapy water directly on these
surfaces - risk of damage!
Bodywork
High-gloss paint
Do not use abrasive products, solvents,
petrol or oil to clean the bodywork.
Never use an abrasive sponge to clean
stubborn stains - risk of scratching the
paintwork!
Do not apply polish in strong sunshine, or to
plastic or rubber parts.
Use a soft cloth and soapy water or a pH
neutral product.
Gently wipe the bodywork with a clean
microfibre cloth.
Apply polish with the vehicle clean and dry.
Comply with the instructions for use stated on
the product.
Decals
(Depending on version)
Do not use a high-pressure washer to
clean the vehicle - risk of damaging or
detaching the decals!
Use a high-flow hose (temperature
between 25°C and 40°C).
Place the jet of water perpendicular to the
surface to be cleaned.
Rinse the vehicle with demineralised water.
Textile
The dashboard, door panels and seats may
contain parts made of textile material.
Maintenance
Do not use aggressive cleaning products
(e.g. alcohol, solvent or ammonia).
Do not use steam-cleaning systems - risk of
affecting the adhesion of the fabrics!
Remove dust from the textile parts
regularly with a dry cloth, soft brush or
vacuum cleaner
.
Rub down the
textile parts once per year with
a clean, damp cloth. After leaving overnight to
dry, brush with a soft-bristled brush.
Stain removal
Do not rub the stain or it may spread or
you may cause the substance to
penetrate the surface.
Act quickly by reducing the stain from its edges inwards.
Remove as much substance or solids as
possible using a spoon or spatula, and
remove
as much liquid as possible using
absorbent paper.
Product/Procedure to use depending
on the type of stain:
–

Grease, oil and ink: clean with a pH-neutral
detergent.
–


V

omit: clean with sparkling mineral water.
–

Blood: spread flour over the stain and allow
to dry; remove with a slightly damp cloth.
–


Mud: allow to dry and then remove with a
slightly damp cloth.
–


Cake, chocolate, ice cream: clean with
lukewarm water

.
–

Sugary and/or alcoholic drinks: clean with
lukewarm water

, or lemon juice if the stain is
persistent.
–

Hair gel, coffee, tomato sauce, vinegar:
clean with lukewarm water and lemon juice.
For solid substances, then use a soft brush or
vacuum cleaner

.
For liquid substances, then use a damp
microfibre cloth and then dry with another
cloth.
Leather
Leather is a natural product. Appropriate regular
care is essential for its durability.

166
In the event of a breakdown
The jack meets European standards, as
defined in the Machinery Directive 2006/42/
CE.
The jack does not require any maintenance.
List of tools

1.Chock to immobilise the vehicle (depending
on equipment)
2. Socket for the wheel security bolts (located in
the glove box) (depending on equipment)
To adapt the wheelbrace to the special
‘security’ bolts.
3. Removable towing eye
For more information on Towing the vehicle
and using the removable towing eye, refer to the
corresponding section.
With temporary puncture repair kit

4. 12 V compressor with cartridge of sealant
and speed limit sticker
For temporary repair of a tyre and to adjust
the tyre pressure.
For more information about the Temporary
puncture repair kit, refer to the corresponding
section.
With spare wheel

5. Wheelbrace
For removing the wheel bolts.
6.Jack with integrated handle
To raise the vehicle.
7. Wheel bolt cap removal tool (depending on
equipment)
For removing the wheel bolt head finishers on
alloy wheels.
For more information on the Spare wheel, refer
to the corresponding section.
Temporary puncture repair kit
Scan the QR Code on page 3 to view
explanatory videos.
Made up of a compressor and a sealant
cartridge,
it allows you to carry out a temporary
repair of the tyre so that you can drive to the
nearest garage.
It is designed to repair most punctures located
on the tyre tread.
The vehicle's electric system allows the connection of the compressor to the 12 V
power supply for long enough to repair a tyre
after a puncture.
For more information on the Tool kit,
refer to the corresponding section.

234
Event data recorders
Recording event data
Electronic control units are installed in your
vehicle. These control units process data
received from the vehicle's sensors, for example,
or data they generate themselves or exchange
with each other. Some of these control units are
required for the correct operation of your vehicle,
some others assist you while driving (driving or
manoeuvring aids), while others provide comfort
or infotainment functions.
The following contains general information about
how data is processed within the vehicle.
You will find additional information about the
specific data which is downloaded, stored
and transmitted to third parties and what it is
used for in your vehicle under the keyword
"Data protection". This information is directly
associated with the references for the functions
in question contained in the corresponding
vehicle handbook, or in the general terms and
conditions of sale.
This information is also available online.
Vehicle operating data
The control units process the data used for the
operation of the vehicle.
This data includes, for example:
–
Information about the state of the vehicle
(e.g.

speed, travel time, lateral acceleration,
wheel rotation rate, fastened seat belts display).
–

Environmental conditions (e.g.
temperature,
rain sensor, distance sensor). As a general rule, this data is temporary, is
not stored for longer than one operating cycle
and is only used within the vehicle itself. The
control units often record this data (including the
vehicle's key). This function allows either the
temporary or permanent storage of information
about the state of the vehicle, stresses on
components, servicing requirements, as well as
events and technical errors.
Depending on the vehicle's equipment level, the
data stored is as follows:
–

Operating state of system components
(e.g.
filling level, tyre pressures, battery charge
status).
–
Faults and malfunctions in important system
components (e.g.
lamps, brakes).
–
System reactions in specific driving situations
(e.g.
deployment of an airbag, triggering of
stability control and braking systems).
–
Information about events which have
damaged the vehicle.
–

For electric and rechargeable hybrid vehicles,
the traction battery charge level and the
estimated driving range.
In particular circumstances (e.g.
if the vehicle
has detected a malfunction), it may be necessary
to record data which would otherwise simply not
be stored.
When taking your vehicle in for servicing
(e.g.
repairs, maintenance), the stored operating
data may be read along with the vehicle's
identification number and used if necessary.
The personnel working for the servicing network (e.g.
garages, manufacturers) or third parties
(e.g. roadside assistance agents) may read
the vehicle's data. This also applies to work
carried out under warranty and quality assurance
measures.
This data is generally read via the OBD
(On-Board Diagnostics) port fitted by law to
the vehicle. It is used to report on the technical
state of the vehicle or its components and
facilitates the diagnosis of malfunctions, in
compliance with warranty obligations and for
quality improvement. This data, in particular the
information relating to stress on components,
technical events, operator errors and other
malfunctions, is sent to the Manufacturer, if
necessary, along with the vehicle's identification
number. The Manufacturer's liability may also be
engaged. The Manufacturer may also use the
operating data taken from the vehicle for product
recalls. This data may also be used to check the
customer's warranty and any claims made under
warranty.
Any malfunctions stored in the vehicle may be
reset by an after-sales service company during
servicing or repair work, or at your request.
Comfort and infotainment
functions
Comfort settings and personalised settings
may be saved in the vehicle and modified or
reinitialised at any time.

237
Alphabetical index
180° rear vision 131
360 Vision
130
A
ABS 69
Accelerated charging unit (Wallbox)
141
Accessories

66
Active Safety Brake

122–124
AdBlue®

20, 160
AdBlue® tank

161
Additive, Diesel

158
Adjusting headlamps

59
Adjusting head restraints

40
Adjusting seat

40–41
Adjusting the air distribution

49–50
Adjusting the air flow

49–50
Adjusting the date

206, 229
Adjusting the height and reach
of the steering wheel

42
Adjusting the lumbar support

41
Adjusting the seat angle

41
Adjusting the temperature

48, 50
Adjusting the time

206, 230
Advice on care and maintenance

139, 162
Advice on driving

7, 84–85
Airbags

73, 75, 77
Airbags, curtain

74–75
Airbags, front

74–75, 77
Airbags, lateral

74–75
Air conditioning

46–47, 49
Air conditioning, automatic 50
Air conditioning, dual-zone automatic
47, 50
Air conditioning, manual

47, 50
Air intake

50
Air vents

45
Alarm

35–36
Amplifier, audio

54
Android Auto connection

204, 221
Anti-lock braking system (ABS)

69
Antitheft / Immobiliser

29
Apple CarPlay connection

203, 220
Applications

221
Assistance call

67–68
Assistance, emergency braking

70, 124
Audible warning

67
Audio streaming (Bluetooth)

200, 225
B
Battery, 12 V 153, 158, 175–177
Battery, ancillaries
175
Battery, charging

175–176
Battery, remote control

33–34
Blind

38–39
Blind spot sensors

121
BlueHDi

20, 158, 165
Bluetooth (hands-free)

201–202, 226
Bluetooth (telephone)

201–202, 226–227
Bluetooth touch screen audio system

24
Bodywork

163
Bonnet

154–155
Boot 35, 56
Brake discs
159
Brake lamps

174
Brakes

159
Braking

95
Braking assistance system

69–70
Braking, automatic emergency

122–124
Braking, dynamic emergency

90–92
Brightness

205
Bulbs

173
Bulbs (changing)

171–172, 174
C
Cable, audio 224
Cable, Jack
224
Capacity, fuel tank

137
Cap, fuel filler

137
Care of the bodywork

163
Central locking

31–32
Changing a bulb

171–172, 174
Changing a fuse

174
Changing a wheel

169
Changing a wiper blade

64
Changing the remote control battery

33
Changing to free-wheeling

178
Charge level indicator (Electric)

21
Charger, induction

53
Charger, wireless

53
Charging cable

142
Charging cable (Electric)

141

240
Alphabetical index
Instrument panel, LCD 9
Internet browser
218, 221
ISOFIX mountings

78, 81–82
J
Jack 165–166, 169, 224
Jump starting
176
K
Key 28–29, 32–33
Key, electronic
30–31
Keyless Entry and Starting

28, 30–31, 87–88
Key not recognised

88–89
Key with remote control

28, 86
Kit, hands-free

201–202, 226
Kit, puncture repair

166
Kit, temporary puncture repair

165–168
L
Labels, identification 185
Lamp, boot
56
Lamps, parking

58
Lamps, rear

174
Lams with Full LED technology

61
Lane assist

109, 113–115
Lane departure warning active

11 8
Leather (care) 163
LEDs - Light-emitting diodes
58, 172, 174
Level, AdBlue®

158
Level, brake fluid

157
Level, Diesel additive

158
Level, engine coolant

19, 157
Level, engine oil

19, 156
Levels and checks

155–157
Level, screenwash fluid

63, 157
Light-emitting diodes - LEDs

58, 172, 174
Lighting, cornering

61
Lighting dimmer

23
Lighting, exterior

57, 60
Lighting, guide-me home

29, 59–60
Lighting, interior

55
Lighting, mood

55
Lighting, welcome

59
Loading

152–153
Load reduction mode

154
Locking

29, 31
Locking from the inside

32
Locking the doors

32
Low fuel level

137
Lumbar

41
M
Mains socket (domestic network) 141
Maintenance (advice)
139, 162
Maintenance, routine

102, 158–160
Manoeuvring aids (recommendations)

101
Map reading lamps 55
Markings, identification
185
Massage function

41
Mat

54, 102
Menu, main

26
Menus (audio)

197–198, 210–211
Menu short cuts

26
Messages

228
Messages, quick

228
Minimum traction battery charge
level (Electric)

21
Mirror, rear view

43
Mirrors, door

43, 51, 121
Mirror, vanity

52
Misfuel prevention

138
Mobile application

27, 51, 148
Motor, electric

89, 156, 184
Mountings, ISOFIX

78, 81–82
Multimedia support

52
N
Navigation 215–217
Navigation, connected
218–220
O
Obstacle detection 126
Oil change
156
Oil consumption

156