2022 CITROEN C4 check engine light

176
Practical information
stations equipped with AdBlue® pumps specially
designed for passenger vehicles.
Recommendations on storage
AdBlue® freezes at about -11°C and deteriorates
above +25°C. Containers should be stored in a
cool area and protected from direct sunlight.
Under these conditions, the fluid can be kept for
at least a year.
If the fluid has frozen, it can be used once it has
completely thawed out at room temperature.
Never store AdBlue® containers in your
vehicle.
Precautions for use
AdBlue® is a urea-based solution. This fluid is
non-flammable, colourless and odourless (when
kept in a cool place).
In the event of contact with the skin, wash the
affected area with soap and running water. In the
event of contact with the eyes, immediately rinse
the eyes with large amounts of water or with an
eye wash solution for at least 15 minutes. Seek
medical attention if you feel a persistent burning
sensation or irritation.
If swallowed, immediately wash out the mouth
with clean water and then drink plenty of water.
In certain conditions (high temperature, for
example), the risk of release of ammonia cannot
be excluded: do not inhale the fluid. Ammonia
vapours have an irritant effect on mucous
membranes (eyes, nose and throat).
Store AdBlue® out of the reach of
children, in its original container.
Procedure
Before starting the top-up procedure, ensure that
the vehicle is parked on a flat and level surface.
In wintry conditions, ensure that the temperature
of the vehicle is above -11°C. Otherwise the
AdBlue
® may be frozen and so cannot be poured
into the tank. Park the vehicle in a warmer area
for a few hours to allow the top-up to be carried
out.
Never pour the AdBlue® into the Diesel
fuel tank.
If any AdBlue® is splashed, or if there are
any spillages on the bodywork, rinse
immediately with cold water or wipe with a
damp cloth.
If the fluid has crystallised, clean it off using a
sponge and hot water.
Important: in the event of a top-up after
a breakdown because of a lack of
AdBlue, it is essential to wait around 5
minutes before switching on the ignition,
without opening the driver’s door,
unlocking the vehicle, inserting the key
into the ignition switch, or bringing the
key for the "Keyless Entry and Start"
system into the passenger compartment.
Switch on the ignition, then wait for 10
seconds before starting the engine.
►

Switch off the ignition and remove the key
from the switch to switch off the engine.
or
►


With Keyless Entry and Start, press the
"

START/STOP" button to switch off the engine.


► Turn the blue cap of the AdBlue® tank anti-
clockwise and remove it.
►

With a container of

AdBlue
®: after checking
the expiry date, read the instructions on the
label carefully before pouring the contents of the
container into the vehicle's AdBlue
® tank.
►
With an
AdBlue® pump: insert the nozzle and
fill the tank until the nozzle automatically cuts
out.
In order not to overfill the AdBlue® tank:
–
Add between 10 and 13 litres using
AdBlue® containers.
–
Stop after the nozzle’ s first automatic cut-
out, if you are refilling at a service station.

188
In the event of a breakdown
If you need to replace this type of bulb,
you must contact a CITROËN dealer or a
qualified workshop.
Do not touch the LED technology bulbs - risk
of electrocution!
Front lamps
Model with LED headlamps

1. Daytime running lamps/Sidelamps
2. Dipped beam headlamps
3. Main beam headlamps
4. Direction indicators
5. Foglamps (P21W or LED)
Model with halogen headlamps
1.Daytime running lamps/Sidelamps (LED)
2. Main beam headlamps (H7)
3. Dipped beam headlamps (H7)
4. Direction indicators (PY21W)
5. Foglamps (P21W or LED)
Opening the bonnet/Accessing the
bulbs
Proceed with caution when the engine is hot -
risk of burns!
Take care with objects or clothing that could
be caught in the blades of the cooling fan -
risk of strangulation!
Halogen bulbs (Hx)
To ensure good quality lighting, check
that the bulb is correctly positioned in its
housing.
Main/Dipped beam headlamps


► Remove the protective cover by pulling on
the tab.
►

Disconnect the bulb connector
.
►

Remove the bulb and replace it.
T

o refit, carry out these operations in reverse
order, directing the bulb’s positioning lug
downwards.
Direction indicators
Rapid flashing of the indicator lamp for a
direction indicator (left or right) indicates

192
In the event of a breakdown
Automatic gearbox
Never try to start the engine by pushing
the vehicle.
Electric motor
Flat accessory battery
It is no longer possible to start the motor
or recharge the traction battery.
Precautions before working on the
accessory battery
Select mode
P, switch off the ignition, check
that the instrument panel is off and that the
vehicle is not being charged.
Jump-starting another vehicle
Do not use the accessory battery to
jump-start another vehicle or to charge
another vehicle's battery.
Symbols
No sparks or naked flames, no smoking.
Always protect your eyes. Explosive gases can cause blindness and injury.
Keep the vehicle's battery out of the reach
of children.
The vehicle's battery contains sulphuric acid which can make you go blind or
cause severe burns.
For more information, refer to the
handbook.
Explosive gases can be present close to
the battery.
Accessing the battery
The battery is located under the bonnet.

For access to the (+) terminal:
► Release the bonnet by pulling the internal
release lever
, then the external safety catch.
►

Raise the bonnet.
(+)

Positive terminal with a quick-release
terminal.
(-) Negative terminal.
Starting using another
battery
If the vehicle's battery is flat, the engine can be
started using a backup battery (either external or
from another vehicle) and jump leads or using a
battery booster.
Never start the engine by connecting a
battery charger.
Never use a 24
V or higher battery booster.
Check beforehand that the backup battery
has a nominal voltage of 12 V and a capacity
at least equal to that of the discharged
battery.
The two vehicles must not be in contact with
each other.
Switch off all electricity-consuming equipment
on both vehicles (audio system, wipers,
lighting, etc.).
Make sure that the jump leads are well away
from the engine’s moving parts (fan, belt,
etc.).
Do not disconnect the (+) terminal while the
engine is running.


► Lift the plastic cover on the (+) terminal, if the
vehicle has one.
►

Connect the red cable to the (+) terminal of
flat battery

A (at the metal elbow), then to the
(+) terminal of the backup battery
B or of the
booster.
►

Connect one end of the green or black cable
to the (-) terminal of the backup battery

B or of

272
Alphabetical index
Charger, wireless 60
Charging cable
157
Charging cable (Electric)

156
Charging connector (Electric)

155, 160,
162–163
Charging flap (Electric)

155, 160, 162–163
Charging system (Electric)

5, 9, 28, 153, 171
Charging the traction battery
(Electric)

23, 153, 157, 160, 162–163
CHECK

24
Checking the engine oil level

20
Checking the levels

171–172
Checking tyre pressures
(using the kit)

181, 183
Checks

170, 173–175
Checks, routine

173–174
Child lock

92
Children

81, 87–89
Children (safety)

92
Child seats

81, 84–87
Child seats, conventional

87, 90–91
Child seats, i-Size

89–91
Child seats, ISOFIX

87–91
Cleaning (advice)

154, 177–179
Closing the boot

36, 40
Closing the doors

35–36, 39
Collision Risk Alert

132–134
Configuration, vehicle

11, 28–29
Connected applications

239
Connection, Android Auto

221, 239
Connection, Apple CarPlay

221, 238Connection, Bluetooth 208–209, 218–219,
239–240, 244–245, 260–261
Connection, Wi-Fi network

240
Connectivity

238, 265
Consumptions

29–30
Container, AdBlue®

176
Control, emergency boot release

40
Control, emergency door

37
Control, heated seats

47, 50–51
Controls, steering mounted

102–103
Control stalk, lighting

65–66
Control stalk, wipers

70–72
Control unit

156–157
Courtesy lamps

62–63
Cruise control

113–114, 116–118
Cruise control, adaptive

113–114, 118–119
Cruise control by speed limit
recognition

113–114
D
DAB (Digital Audio Broadcasting) -
Digital radio
207, 217, 242
Date (setting)

224, 247, 266
Daytime running lamps

66, 188
Deactivating the passenger airbag

83, 86
Deadlocking

33, 36
Deferred charging

30
Deferred charging (Electric)

28, 30,
155, 160, 163
Deferred charging (Rechargeable hybrid)

30
Defrosting 48, 57
Defrosting, front
57
Defrosting, rear screen

58
Demisting

48, 57
Demisting, front

57
Demisting, rear

58
Diagnosis, vehicle

24
Dials and gauges

10
Digital instrument panel

11
Dimensions

202
Dipstick

20, 171
Direction indicators (turn signals)

66, 188–189
Display, head-up

12
Display screen, instrument panel

10
Domestic charging
(Electric)

157, 162–163, 201
Doors

39
Drive, electric

5, 9, 23, 28, 30,
153, 164, 171, 192, 195, 201
Driver’s attention warning

136–137
Drive selector (Electric)

103, 174
Driving

93–94
Driving aids camera (warnings)

11 0
Driving aid shortcuts

111
Driving aids (recommendations)

109
Driving economically

8
Driving modes

104–105
Dynamic stability control (DSC)

78

274
Alphabetical index
Immobiliser, electronic 95
Indicator, AdBlue® range
21
Indicator, coolant temperature

21
Indicator, engine oil level

20
Indicators, direction

66, 188
Indicator, service

19
Inflating tyres

174, 203
Inflating tyres and accessories
(using the kit)

181, 183
Information, vehicle

10, 268
Infrared camera

11 0
Instrument panel

10, 26, 111
Instrument panel, LCD

10
Internet browser

236, 239
ISOFIX mountings

87, 90–91
J
Jack 181, 184, 242
Jump starting
192
K
Key 32, 34, 37
Key, electronic
35–36
Keyless Entry and Starting

32, 34–36, 96–97
Key not recognised

97–98
Key with remote control

32, 95
Kit, hands-free

208–209, 218–219, 244, 260
Kit, puncture repair

181
Kit, temporary puncture repair 180–183
Klaxon
75
L
Labels, identification 202
Lamps, parking
66
Lamps, rear

189–190
Lamps with Full LED technology

70
Lane assist

118, 123–125
Lane keeping assist

128
Leather (care)

179
LEDs - Light-emitting diodes

66, 188–189
Level, AdBlue®

173
Level, brake fluid

172
Level, Diesel additive

173
Level, engine coolant

21, 172
Level, engine oil

20, 171
Levels and checks

170–172
Level, screenwash fluid

71, 172
Light-emitting diodes - LEDs

66, 188–189
Lighting, boot

64
Lighting, cornering

70
Lighting dimmer

25
Lighting, exterior

65, 68
Lighting, guide-me home

33, 67–68
Lighting, interior

62–63
Lighting, mood

63
Lighting, welcome

67–68
Loading

167–168
Load reduction mode

169
Locking 33–35
Locking from the inside
36
Locking the doors

36–37
Log, alerts

24
Lumbar

46
M
Mains socket (domestic network) 156
Maintenance (advice)
154, 177
Maintenance, routine

110, 173, 175
Manoeuvring aids (recommendations)

109
Map reading lamps

62
Markings, identification

202
Massage function

46
Mat

62, 110
Menu, main

28
Menus (audio)

205, 214–215, 228–229
Menu, shortcuts

28–29
Messages

246
Messages, quick

246
Minimum traction battery charge level
(Electric)

23
Mirror, rear view

48
Mirrors, door

48, 58, 131
Mirror, vanity

59
Misfuel prevention

153
Mobile application

30, 58, 163
Motor, electric

98, 171, 201
Mountings, ISOFIX

87, 90–91
Multimedia support

60