157
DS3_en_Chap06_securite_ed02-2015
Active City Brake
Active City Brake is a driving assistance system that aims to avoid a frontal collision
or reduce the speed of an impact if the driver
does
n
ot
r
eact
s
ufficiently
(
inadequate
b
rake
appl
ication).This
s
ystem
i
s
d
esigned
t
o
i
mprove
dr
iving
s
afety.
It
r
emains
t
he
d
river's
r
esponsibility
t
o
co
ntinuously monitor the state of the
traffic and to assess the distances and
relative
s
peeds
o
f
o
ther
v
ehicles.
Active
C
ity
B
rake
c
an
i
n
n
o
ci
rcumstances replace the need for
vigilance
o
n
t
he
p
art
o
f
t
he
d
river.
Never
l
ook
a
t
t
he
l
aser
s
ensor
t
hrough
an op
tical
ins
trument
(m
agnifying
gla
ss,
mi
croscope...)
a
t
a d
istance
o
f
l
ess
t
han
10 c
entimetres:
r
isk
o
f
e
ye
i
njury.Automatic
b
raking
o
ccurs
l
ater
t
han
i
f
do
ne by the driver, so as to intervene
only
w
hen
t
here
i
s
a h
igh
r
isk
o
f
col
lision.Principle
Using a laser sensor located at the top of the windscreen, this system detects a vehicle
running
i
n
t
he
s
ame
d
irection
o
r
s
tationary
ah
ead
o
f
y
our
v
ehicle.
When
n
ecessary,
t
he
v
ehicle's
b
raking
s
ystem
is o
perated automatically to avoid a collision
with
t
he
v
ehicle
a
head.
Conditions for activation
Active City Brake only operates if the following conditions a re m et:
●
ig
nition
o
n,
●
th
e
v
ehicle
i
s
i
n
a f
or ward
g
ear,
●
sp
eed
i
s
b
etween
a
bout
3 a
nd
1
8
m
ph
(
5
a
nd
3
0
k
m/h),
●
th
e
b
raking
a
ssistance
s
ystems
(
ABS,
EB
FD,
e
mergency
b
raking
a
ssistance)
a
re
no
t faulty,
●
th
e
t
rajectory
c
ontrol
s
ystems
(
ASR,
D
SC)
ar
e not deactivated or faulty,
●
th
e
v
ehicle
i
s
n
ot
i
n
a t
ight
c
orner,
●
th
e
s
ystem
h
as
n
ot
b
een
t
riggered
d
uring
th
e
p
revious
1
0
s
econds.
Safety
DS3_en_Chap08_info-pratiques_ed02-2015
Towing with the PERFORMANCE version
Your vehicle cannot be fitted with a
towbar. The space occupied by the
sport diffuser prevents this.
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 towed load on a long incline
depends on the gradient and the ambient
temperature.
In all cases, keep a check on the coolant
temperature.
F
I
f the warning lamp and the
STOP warning lamp come on,
stop the vehicle and switch off
the engine as soon as possible.
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
F Check the tyre pressures of the towing vehicle and of the trailer, observing the
recommended pressures.
Lighting
F Check the electrical lighting and signalling on the trailer.
The rear parking sensors will be
deactivated automatically if a genuine
CITROËN towbar is used.
