2007 CITROEN C4 rims

97
VIII
S A F E T Y
BRAKING ASSISTANCE SYSTEMS
Group of supplementary systems
which help you to obtain optimum
braking in complete safety in emer-
gency situations:
- anti-lock braking system (ABS),
- electronic brake force distribu-tion (EBFD),
- emergency braking assistance (EBA).
Anti-lock braking system
and electronic brake force
distribution
Linked systems which improve the
stability and manoeuvrability of your
vehicle when braking, in particular
on poor or slippery surfaces.
Activation
The anti-lock braking system comes
into operation automatically when
there is a risk of wheel lock.
Normal operation of the ABS may
make itself felt by slight vibration of
the brake pedal. Operating fault
When braking in an emergency,
press very fi rmly without releasing
the pressure. If this warning lamp comes
on, accompanied by an au-
dible signal and a message
on the multi-function screen,
it indicates a malfunction of the anti-
lock braking system which could re-
sult in loss of control of the vehicle
when braking.
If this warning lamp comes
on, together with the STOP
and ABS warning lamps,
accompanied by an audi-
ble signal and a message on the
multifunction screen, it indicates a
malfunction of the electronic brake
force distribution which could result
in loss of control of the vehicle when
braking.

You MUST stop as soon as it is
safe to do so.
In both cases, contact a CITROËN
dealer.
When replacing wheels (tyres and
rims), ensure that they conform to
the manufacturer's recommenda-
tions. 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 effi ciency.
When braking in an emergency,
press fi rmly without releasing the
pressure.

98
VIII
S A F E T Y
TRAJECTORY CONTROL SYSTEMS
Anti-skid regulation (ASR) and
electronic stability programme
(ESP)
The anti-skid regulation (also known
as Traction Control) optimises trac-
tion to prevent skidding of the wheels,
by acting on the brakes of the driving
wheels and on the engine.
The electronic stability programme
acts on the brake of one or more
wheels and on the engine to keep
the vehicle on the trajectory required
by the driver.
Activation
These systems are activated auto-
matically each time the vehicle is
started.
They come into operation in the event
of a grip or trajectory problem. This is indicated by fl ashing
of this warning lamp on the
instrument panel. Deactivation
In exceptional conditions (starting a
vehicle which is bogged down, stuck
in snow, on soft ground...), it may be
advisable to deactivate the ASR and
ESP systems, so that the wheels
can move freely and regain grip.

 Press the "ESP OFF" button, lo-
cated in the centre of the dash-
board. Reactivation
These systems are reactivated au-
tomatically each time the ignition is
switched back on or from 30 mph
(50 km/h).

 Press the "ESP OFF" but-
ton again to reactivate them
manually.
If this warning lamp comes
on in the instrument panel
and the indicator lamp on the
button comes on, this indi-
cates that the ASR and ESP
systems are deactivated. Operating fault
If this warning lamp comes
on, accompanied by an au-
dible signal and a message
on the multifunction screen,
this indicates a malfunction of these
systems.
Have the systems checked by a
CITROËN dealer.
The ESP/ASR systems offer ex-
ceptional safety in normal driving,
but this should not encourage the
driver to take extra risks or drive at
high speed.
The correct functioning of these
systems depends on observation
of the manufacturer's recommen-
dations regarding the wheels (tyres
and rims), the braking components,
the electronic components and the
CITROËN assembly and operation
procedures.
After an impact, have these systems
checked by a CITROËN dealer.

135
XI
P R A C T I C A L I N F O R M A T I O N
Removing a wheel
List of operations

 Park the vehicle on stable, fi rm
ground. Apply the parking brake.
Switch off the ignition and en- gage fi rst gear or reverse gear,
depending on the slope (for ve-
hicles with automatic gearbox,
select position P).

 Detach the embellisher using the
wheelbrace 1 by pulling close to
the valve.
For vehicles with aluminium wheel rims, slide the embellisher
removal tool 5 into the slot in the
central embellisher and apply
fi rm leverage to detach.
 Slacken the wheel bolts using
the wheelbrace 1 .
For vehicles with aluminium wheel rims, slacken the anti-theft
bolt using the socket 6 fi tted on
the wheelbrace 1 .

 Position the jack under the
bodyshell, exactly as in the illus-
tration at the mark A , closest to
the wheel that is to be replaced.

 Operate the jack 4 until its base
is in contact with the ground.
Make sure that the base of the
jack is vertically below the jack-
ing point used.

 Raise the vehicle.

 Remove the bolts and disengage
the wheel. List of operations

 Position the wheel using the cen-
tring guide 2 .

 Do up the 3 bolts by hand and
remove the centring guide.
Position the 4th bolt.

 Pretighten the bolts using the
wheelbrace 1 . For vehicles with al-
uminium wheel rims, pretighten the
anti-theft bolt using the socket 6
fi tted on the wheelbrace 1 .


Retract the jack 4 and disengage it.

 Tighten the wheel bolts using the
wheelbrace 1 and the anti-theft
bolt using the socket 6 .

 Reposition the embellisher, com-
mencing by placing the slot at
the valve, pressing it home with
the palm of your hand.
For vehicles with aluminium wheel rims, reclip the central
embellisher in place.

 Stow the tools and the wheel in
the boot.

 Check the tyre pressure and also
have its balancing checked.
Fitting a wheel