brake sensor CITROEN DS3 CABRIO 2017 Handbook (in English)

161
Active City Brake
Active City Brake is a driving assistance system t hat a ims t o a void a f rontal c ollision or r

educe
 t
he
 s
peed
 o
f
 a
n
 i
mpact
 i
f
 t
he
 d
river
 do

es
 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
 m
onitor
 t
he
 s
tate
 o
f
 t
he
 tr

affic
 a
nd
 t
o
 a
ssess
 t
he
 d
istances
 a
nd
 re

lative
 s
peeds
 o
f
 o
ther
 v
ehicles.
Active
 C

ity
 B
rake
 c
an
 i
n
 n
o
 ci

rcumstances
 r
eplace
 t
he
 n
eed
 f
or
 vi

gilance
 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
 b
y
 t
he
 d
river,
 s
o
 a
s
 t
o
 i
ntervene
 on

ly
 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, t his s ystem d etects a v ehicle ru

nning
 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
 a
utomatically
 t
o
 a
void
 a c
ollision
 wi

th
 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
 n
ot
 d
eactivated
 o
r
 f
aulty,
●
 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

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.