2021 CITROEN C4 AIRCROSS engine coolant

35
When the engine is
running, this indicates the
temperature of the coolant.
Range
When the engine is
running, this indicates
the distance which can
still be travelled with the
fuel remaining in the tank
based on the average
fuel consumption over the
last few miles/kilometres
travelled. This value may vary following a change
in the style of driving or the relief,
resulting in a large variation in the
current fuel consumption.
If you only add a few litres, the value
displayed will be incorrect. Therefore,
you must fill the tank whenever
possible.
Coolant temperature
gauge
If the bar is close to the critical
position located
on the right, the temperature is too high.
The symbol flashes when your engine is
overheating.
You must stop your vehicle as soon as it is
safe to do so.
Wait a few minutes before switching off the
engine. When the range is less than 30 miles (50 km)
,
dashes are displayed.
Refuel as soon as possible. The display of the
range is updated.
Wait for the engine to cool before
topping up the level. The cooling system
is pressurised.
To avoid any risk of scalding, unscrew
the cap by two turns to allow the
pressure to drop.
When the pressure has dropped,
remove the cap and top up the level,
if
necessary.
Contact a CITROËN dealer or a
qualified workshop. When you disconnect the battery,
the previous fuel consumption data
is lost and the value displayed will be
different from that displayed before the
battery was disconnected. The distance
displayed must be considered an
approximate indication.
1
Monitoring

202
Driving advice
Distribution of loads
F Distribute the load in the trailer so that the heaviest items are as close as possible to
the axle and the nose weight approaches the
maximum permitted without exceeding it.
Air density decreases with altitude, thus
reducing engine per formance. Above
1
000 metres, the maximum towing load must
be reduced by 10
% of the GTW and so on for
every 1
000 metres of altitude.
Refer to the "Technical Data" section for details
of the weights and towing loads which apply to
your vehicle.
Side wind
F Take into account the increased sensitivity to side wind.
Cooling
Towing a trailer on a slope increases the
temperature of the coolant.
As the fan is electrically controlled, its cooling
capacity is not dependent on the engine speed.
F

T
o lower the engine speed, reduce your
speed.
The maximum towing load on a long slope
depends on the gradient and the outside
temperature.
In all cases, pay attention to the coolant
temperature.
F

I
f this message is displayed, stop your
vehicle as soon as it is safe to do so.
Braking
Towing a trailer increases the braking distance.
Ty r e s
F Check the tyre pressures of the towing vehicle and of the trailer, observing the
recommended pressures.
Lighting
F Check the lighting and signalling on the trailer.
If the message flashes slowly, wait for the
engine to cool before topping up the level, if
necessary.
If the message flashes rapidly, contact a
CITROËN dealer or a qualified workshop
without delay.
Practical information

214
Coolant level
The coolant level should be between
the two marks.In addition, as the cooling system is
pressurised, wait at least one hour after
switching off the engine before carrying out any
work.
To avoid any risk of scalding, unscrew the cap
by two turns to allow the pressure to drop.
When the pressure has dropped, remove the
cap and top up the level.
Fluid specification
The coolant must conform to the
manufacturer's recommendations.
The brake fluid level should be close
to the "MA X" mark. If it is not, check
the brake pad wear.
Brake fluid level
Changing the fluid
Refer to the maintenance and warranty guide
for details of the interval for this operation.
Fluid specification
The brake fluid must conform to the
manufacturer's recommendations and meet
the
DOT3 or DOT4 standard.
The cooling fan may star t after switching
off the engine: take care with ar ticles and
clothing that might become caught by the
fan blades. When the engine is warm, the temperature of
the coolant is regulated by the fan.
Checks

335
ABS and EBFD systems ...............................14 2ac
cessories .............................. ....................204
Accessory socket, 12V

...................... 9
0, 92, 93
a

ccess to bulbs
............................................. 18

3
ac

tive stability control (
aS
C)
........................14

4
Adjusting headlamps
.................................... 13

3
Adjusting head restraints

................................73
A

djusting seat belt height
.............................14

6
Adjusting the steering wheel

..........................79
A

irbag, knee
.......................................... 15

2, 15 4
Airbags
...............

........................................... 150
Airbags, curtain
..................................... 15

3, 15 4
Airbags, front......................................... 150, 15 4
Airbags, lateral
...................................... 15

2, 15 4
Air conditioning
...............................

.......... 10, 81
Air conditioning, automatic
................................................ 8

1, 84
Air conditioning, manual
...............

..................................... 81, 82
ai

r filter
...............
........................................... 216
ai

r flow
..............................
..............................80
Air intake

...............
....................................83, 86
ai

r vents
..............................
............................80
Alarm
............................................................... 65
A

nti-lock braking
system (ABS)

.............................................. 14

2
Anti-theft
..............................

................... 61, 102
apple® player ............... 278, 279, 280, 304, 306
Armrest, front ...................................... 7 4, 90, 93
Armrest, rear

................................................... 76aSC ........

....................................................... 14 4
ash

tray, portable
.......................................9
0, 92
Audible warning
............................................ 1

41
Audio-CD
..............................

....... 276, 303, 323
Audio file formats

.......................................... 2

76
Audio streaming (
b
lu

etooth)
..............................
............330, 331
Audio systems

............................... 2
49, 289, 311Audio-telematics
...............................

............
249
Automatic illumination of headlamps
...................................... 1
28, 130
Automatic operation
of hazard warning lamps
............................
1
41
Automatic rain sensitive windscreen wipers
...................................... 13
6
Automatic switching off of lighting
................
13
0
Auxiliary
sockets
...........9
4, 278 -281, 304-308, 328 -329
AC
Capacity, fuel tank ..............................
..........210
CD changer ............................... ....................325
CD MP3

................
........................ 276, 303, 325
Central locking

.......................................... 5

2-59
Changing a bulb
..................................... 18

2-187
Changing a fuse
..................................... 1

8 8 -19 3
Changing a wheel

...............................
...175 -178
Changing a wiper blade
...............

............................................ 197
Changing the remote control battery ............................................... 60
Changing the time
.............................. 4

4, 46, 49
Checking levels

...................................... 21

3 -215
Checking the engine oil level
...............

......................................... 213
Checks
...............

.................................... 2 07-218
Children
...............................

... 149, 151, 155 -170
Child lock

...............................
........................170
Child seats

................... 1
55, 156, 160 -162, 169
Child seats, ISOFIX

...................................... 16

6
Cigarette lighter............................................... 92
Closing the boot

...............................
...............63
Closing the doors

...............................
.............62
Colour screen
....................... 2

50, 253, 290, 293
Connectors, audio
.............. 9

4, 278 -281, 304-305, 328 -329
Controls for air conditioning
...............................

........82, 84
Coolant
...............................

.............................35
Coolant level
..............................

...................214
Courtesy lamp, front

..................................... 13

8
Courtesy lamp, rear

...................................... 13

9
Cruise control
................................................ 12

0
Cup holder

...............................
........................90
CVT gearbox

......................................... 1
05, 217
bat

tery
...............................

.................... 194, 216
Battery, charging
...............................

............ 19 6
Battery, remote control

.............................6

0, 61
bl

uetooth (telephone)
....................2

37, 288, 308
bl

uetooth telephone
with voice recognition

.......................... 2

37-24 8
bo

nnet
...............

............................................ 207
bo

nnet stay
................................................... 2

07
b

oot
........

......................................................... 63
Boot lamp

...................................................... 14

0
Bottle holder

...............................

..................... 90
Brake discs

.................................................... 2

18
Brake lamps

...............................

................... 18 6
Brake pads
...............................

..................... 218
Braking assistance system

................

......................................... 142
bulb

s
(changing, type)
................................... 18

2-187
B
.
alphabetical index

338
Reversing lamps ...........................................18 6
Roof bars ....................................................... 20
3
Roof blind

...............................
.........................70
Routine checks

..................................... 21

6, 218
Running out of fuel (Diesel)

..........................2

12
Screen (audio equipment)

................. 4
4, 46, 48
Screen, instrument panel

..........................1

9 - 31
Screen menu

...............................
......... 253, 294
Screenwash, front
......................................... 13

5
Screenwash reservoir
................................... 2

15
SD card

..............................
.......... 265, 279, 280
Seat adjustment

...............................
......... 71, 72
Seat back storage pockets

.............................95
Se

at belts
............................................... 14

6 -149
Seat belts warning lamp

...............................14

6
Seats, electric
................................................. 72
S

eats, rear
....................................................... 75
S

erial number, vehicle
..................................23

5
Service indicator
............................................. 33
S

ervicing
...............................
..........................10
Setting the clock

................................ 4
4, 46, 48
Sidelamps
.....................................1

82, 184, 186
Side repeater
..............................

..................185
Ski flap

..............................
..............................76
Snow chains
.................................................. 18

1
Spare wheel
...............................

........... 114, 176
Speedometer
..............................

....................12
Spotlamps, side
............................................ 18

5
Starting the vehicle

...................................9
8, 99Steering mounted controls,
audio ............... ............................ 251, 291, 314
Stopping the vehicle

.................................9
8, 99
Stop & Start system (
au

to Stop Go)
............................................111
St

orage
................
................................ 76, 91, 96
Stowing rings
..............................

..............96, 97
Sun visor
......................................................... 91
S

ystem, audio- CD..................................311-333
System, audio-telematics
..................... 24

9 -288
Table of weights

.....................2

20-225, 227-232
Tables of engines

...............................
... 219, 226
TCL
........

........................................................14 4
Technical data
....................................... 2

19 -232
Telephone
........................................... 3

08, 309
Telephone, with voice recognition

.........2

37-24 8
Temperature adjustment
...........................8

2, 84
Temperature, coolant
...................................... 35
T

emporary puncture repair kit
......................17

1
Third brake lamp

................................... 1
86, 187
Three flashes function (direction indicators)
................................... 1

41
TMC (Traffic info)

..........................................26

8
To o l s
................

..............................................175
Total distance recorder

...................................32
T

ouch screen audio- CD system
...................28

9
Touch screen audio-telematic system

..........24

9
To w b a r
................

...........................................201
Towed loads

...........................2

20-225, 227-232
T
S
Radio ............................................ 275, 300, 301
Range ................ ........................................32, 35
RCA sockets

.......................... 9
4, 278, 304, 328
R
dS ................

............................................... 302
Rear foglamp ......................................... 129, 186
Rear screen (demisting)
.................................. 89
R

echarging the battery
.................................19

4
Recirculation / exterior air intake

....................84
R

egeneration of the particle
emissions filter
............................................ 2

17
Remote control

.......................................... 5

2- 61
Removing a wheel

..............................
..........17 7
Removing the mat

...............................
............91
Repair kit, puncture

....................................... 17

1
Replacing bulbs
..............................

.......182-187
Replacing fuses
..............................

.......18 8 -19 3
Replacing the air filter

...................................2

16
Replacing the oil filter

................................... 2

16
Replacing the passenger
compartment filter

...................................... 2

16
Replacing wiper blades................................. 197
Rev counter
..................................................... 12
R

eversing camera
...............................
..........126
R
Passenger compartment filter ...................... 2 16
Player, CD MP3 ............................ 2 76, 303, 325
Port, US
b


............................... 9
4, 278, 304, 328
Priming the fuel system

................................2

12
Protecting children

................. 1
49, 151, 155 -170
Puncture
................

................................ 171, 175
alphabetical index