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8
SAFETY
TRAJECTORY CONTROL
SYSTEMS
Anti-skid regulation (ASR) and
electronic stability programme
(ESP)
The anti-skid regulation (also known as
Traction Control) optimises traction to
prevent skidding of the wheels, by act-
ing 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, within
the limits of the laws of physics.
Activation
These systems are activated automati-
cally 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 in the instru-
ment panel.
Deactivation
In exceptional conditions (starting a ve-
hicle which is bogged down, stuck in
snow, on soft ground...), it may be ad-
visable to deactivate the ASR and ESP
systems, so that the wheels can move
freely and regain grip.
Press the "ESP OFF" button, located
on the left below the steering wheel.
If this warning lamp comes on in the instru-
ment panel and the indicator lamp in the
button comes on, this indicates that the
ASR and ESP systems are deactivated.
Reactivation
These systems are reactivated automati-
cally each time the ignition is switched
back on or from 30 mph (50 km/h).
Press the "ESP OFF" button again
to reactivate them manually.
Operating fault
If this warning lamp comes on,
accompanied by an audible
signal and a message in the
screen, this indicates a fault
with these systems.
Have it checked by a CITROËN dealer
or a qualifi ed workshop.
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 is assured provided
that manufacturer's recommen-
dations are observed on:
- wheels (tyres and rims),
- braking components,
- electronic components,
- assembly and repair proce-
dures.
After an impact, have these sys-
tems checked by a CITROËN
dealer or a qualifi ed workshop.
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