2011 Citroen DS4 brakes

Ty r e u n d e r - i nfl ation detection

System which automatically and continuously
checks the pressure of the tyres while driving.
Sensors fitted in each valve trigger a warning
in the event of problem (speed above 12 mph
(20 km/h)).

Puncture

The tyre under-inflation detection
system is an aid to driving which does
not replace the need for the driver to be
vigilant or to drive responsibly.


Under-infl ated tyre

This warning lamp is displayed on the
instrument panel and/or a message
appears in the screen, accompanied
by an audible signal, to identify the
wheel concerned. The STOP
warning lamp comes on
and/or this warning lamp is displayed on
the instrument panel, accompanied by
an audible signal and a message in the
screen identifying the wheel concerned.


)
Stop as soon as it is safe to do so, avoiding
any sudden movement of the steering
wheel and the brakes.

)
Repair or change the damaged wheel
(punctured or very deflated tyre), and have
the tyre pressure checked as soon as
possible.


)
Check the tyre pressures as soon as
possible.
This check must be carried out when the tyres
are cold.

177
Safety









Emergency braking assistance

System which, in an emergency, enables you
to obtain the optimum braking pressure more
quickly, thus reducing the stopping distance.

Activation

It is triggered by the speed at which the brake
pedal is pressed.
The effect of this is a reduction in the
resistance of the pedal and an increase in
braking efficiency.
When braking in an emergency, press
firmly without releasing the pressure.



















Trajectory control systems (ESP)


Anti-slip regulation (ASR)
and electronic stability
control (ESC)

The anti-slip regulation (also known as traction
control) optimises traction to prevent skidding
of the wheels, by acting on the brakes of the
driving wheels and on the engine.
The electronic stability control acts on the
brake of one or more wheels and on the engine
to keep the vehicle on the trajectory required
by the driver, within the limits of the laws of
physics.


Activation

These systems are activated automatically
each time the vehicle is star ted.
They come into operation in the event of a grip
or trajectory problem.
This is indicated by flashing of this
warning lamp in the instrument panel.








Intelligent traction control
system ("Snow motion")
Your vehicle has a system to help driving on
snow: intelligent traction control.

This system detects situations of difficult
sur face adhesion that could make it difficult to
move off or make progress on deep fresh snow
or compacted snow.
In these situations, the intelligent traction
control
limits the amount of wheel slip to
provide the best traction and trajectory control
for your vehicle.

The use of snow tyres is strongly
recommended on sur faces offering low
levels of adhesion.

Moving off



)
With your foot on the brake, select
position P
or N
.

)
Star t the engine.
If this procedure is not followed, there is an
audible signal, accompanied by a message in
the multifunction screen.


)
With the engine running, press the brake
pedal.

)
Release the parking brake, unless it is
programmed to automatic mode.

)
Select position R
, D
or M
,

)
Gradually release the brake pedal.
The vehicle moves off immediately.

If position N
is engaged inadvertently
while driving, allow the engine to
return to idle then engage position D
to
accelerate.
When the engine is running at idle, with
the brakes released, if position R
, D
or
M
is selected, the vehicle moves even
without the accelerator being pressed.
When the engine is running, never
leave children in the vehicle without
supervision.
When carrying out maintenance with
the engine running, apply the parking
brake and select position P
.



Automatic operation



)
Select position D
for automatic
changing
of the six gears.
The gearbox then operates in auto-adaptive
mode, without any inter vention on the par t
of the driver. It continuously selects the most
suitable gear according to the style of driving,
the profile of the road and the load in the
vehicle.
For maximum acceleration without touching
the lever, press the accelerator pedal down
fully (kick down). The gearbox changes down
automatically or maintains the gear selected
until the maximum engine speed is reached.
On braking, the gearbox changes down
automatically to provide efficient engine
braking.
If you release the accelerator sharply, the
gearbox will not change to a higher gear for
safety reasons.

Never select position N
while the
vehicle is moving.
Never select positions P
or R
unless
the vehicle is completely stationary.

Electric parking brake

This system does not require any
routine servicing. However, in the
event of a problem, have the system
checked by a CITROËN dealer or a
qualified workshop.
For more information, see "Driving - Electric
parking brake - § Operating faults".















Only use products recommended by
CITROËN or products of equivalent
quality and specification.
In order to optimise the operation
of units as impor tant as the braking
system, CITROËN selects and offers
very specific products.
To avoid damaging the electrical units,
the use of a high pressure washer
in the engine compar tment is strictly
prohibited
.



Brake disc wear

For information on checking brake
disc wear, contact a CITROËN dealer
or a qualified workshop.


Manual parking brake

If a loss of effectiveness of this
system is noticed, the parking brake
must be checked, even between
two ser vices.
Checking this system must be done by a
CITROËN dealer or a qualified workshop.
















Brake pads

Brake wear depends on the style
of driving, par ticularly in the case
of vehicles used in town, over shor t
distances. It may be necessary to
have the condition of the brakes checked,
even between vehicle ser vices.
Unless there is a leak in the system, a drop in
the brake fluid level indicates that the brake
pads are worn.

277Practical information
The rear parking sensors will be
deactivated automatically if a genuine
CITROËN towbar is used.



Driving advice


Distribution of loads



)
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 towed load must
be reduced by 10 % for every 1 000 metres of
altitude.
Refer to the "Technical Data" section for details
of the weights and towed loads which apply to
your vehicle.


Side wind



)
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.


)
To lower the engine speed, reduce your
speed.
The maximum towed load on a long incline
depends on the gradient and the ambient
temperature.
In all cases, keep a check on the coolant
temperature.

Braking

Towing a trailer increases the braking distance.
To avoid overheating of the brakes on a long
mountain type of descent, the use of engine
braking is recommended.


Ty r e s



)
Check the tyre pressures of the towing
vehicle and of the trailer, obser ving the
recommended pressures.



Lighting



)
Check the electrical lighting and signalling
on the trailer.


)
If the warning lamp and the
STOP
warning lamp come on,
stop the vehicle and switch off
the engine as soon as possible.

A
ABS and EBFD systems ............................. 176
Accessories ................................................ 278
Accessory socket, 12 V ...... 144, 145, 149, 155
Adjusting headlamps .................................. 128
Adjusting head restraints .............................. 90
Adjusting seat belt height ............................ 179
Adjusting the steering wheel ......................... 94
Airbags, cur tain ................................... 187, 188
Airbags, front ....................................... 184, 188
Airbags, lateral .................................... 186, 188
Air conditioning ............................................ 34
Air conditioning, digital ............................ 79, 82
Air conditioning, manual ......................... 79, 80
Air filter ........................................................ 238
Air flow ......................................................... 34
Air vents ........................................................ 78
Alarm ........................................................... 109
Anti-lock braking system (ABS) .................. 176
Anti-pinch .................................................... 116
Anti-theft...................................................... 103
Armrest, front ...................................... 147, 148
Armrest, rear ............................................... 152
Ashtray, portable ......................................... 143
Assistance call .................................... 173, 292
Audible warning .......................................... 173
Audio streaming (Bluetooth) ...............332, 358
Audio system ................................. 62, 345 -376
Automatic illumination of headlamps ...... 123, 126
Automatic operation
of hazard warning lamps .......................... 173
Automatic rain sensitive
windscreen wipers ............................ 131, 132
Auxiliary sockets .........................144, 333, 357Battery .................................................238, 269
Battery, charging ......................................... 270
Battery, remote control .......................105, 106
Black panel .................................................... 58
Blind spot sensors....................................... 216
Bluetooth (hands-free) ........................ 316, 359
Bluetooth (telephone) .......................... 316, 359
Bonnet ......................................................... 231
Bonnet stay ................................................. 231
Boot ............................................................. 114
Boot lamp ............................................ 138, 155
Brake discs .................................................. 240
Brake lamps ................................................ 261
Brake pads .................................................. 240
Brakes ......................................................... 240
Braking assistance system ......................... 177
Capacity, fuel tank ...................................... 117
CD .......................................................329, 352
CD MP3 ...............................................329, 353
Central locking .................................... 102, 107
Centre console ............................................ 145
Changing a bulb .................................. 256 -263
Changing a fuse .................................. 263 -268
Changing a wheel ............................... 249 -255
Changing a wiper blade ...................... 134, 273
Changing the date .............................. 335, 369
Changing the remote control battery .......... 105Changing the time .............................. 335, 369
CHECK ....................................................39, 55
Checking levels ................................... 235 -237
Checking the engine oil level ................52, 235
Checking tyre pressures (using the kit) ...... 246
Checks ................................................ 233 -240
Child lock ..................................................... 169
Children ................................158 -169, 182, 185
Child seats ...........................................160 -168
Child seats, conventional ............................ 163
Cigarette lighter ........................................... 144
Closing the boot .................................. 102, 114
Closing the doors ................................ 102, 112
Cold climate screen .................................... 273
Connectors, audio .............. 144, 333, 355, 357
Coolant level ...............................................236
Cour tesy lamps ................................... 127, 136
Cruise control ...................................... 219, 222
Cup holder ................................................... 145
C B
Date (display) ..................................... 335, 369
Daytime running lamps ............... 123, 257, 259
Deactivating the passenger airbag ............. 185
Defrosting ................................................ 86, 87
Diesel additive level .................................... 237
Dimensions ................................................. 286
Dipped beam ............................... 122, 257, 258
Dipstick ..................................................52, 235
D