CITROEN C4 PICASSO - Tyre Under-Infl Ation Detection

224
Safety
Tyre under-infl ation detection
The system continuously monitors the
p
ressures on the four t
y
res, once the vehicle is
m
ovin
g
.
It compares the information
g
iven b
y
the four
wheel speed sensors with reference values,
which must be reinitialised ever
y
time the t
y
re
p
ressures are a
dj
uste
d
or a w
h
ee
l
c
h
an
g
e
d
.
Th
e s
y
stem tr
igg
ers an a
l
ert as soon as
i
t
detects a dro
p
in the in
f
lation
p
ressure o
f
one
or more tyres.
The under-inflation detection s
y
stem
does not replace the vi
g
ilance or the
r
esponsibilit
y
o
f
the driver.
Thi
s s
y
stem
d
oes not avo
id
t
h
e nee
d
to
c
heck the t
y
re pressures
(
includin
g
the
spare wheel
)
every month as well as
be
f
ore a lon
g
j
ourne
y
.
Drivin
g
with under-inflated t
y
res impairs
r
oad holdin
g
, extends brakin
g
distances
a
nd causes premature t
y
re wear,
p
articularl
y
under arduous condition
(
hi
g
h loadin
g
, hi
g
h speed, lon
g
j
ourne
y)
.
S
y
stem which automaticall
y
checks the pressure of the t
y
res while drivin
g
.
The inflation pressures defined for
y
our vehicle can be found on the t
y
re
pressure label
(
see the "Identification
markin
g
s" section
)
.
Ty
re pressures s
h
ou
ld
b
e c
h
ec
k
e
d
when the t
y
res are "cold"
(
vehicle
s
topped
f
or 1 hour or a
f
ter a
j
ourne
y
o
f
less than 6 miles
(
10 km
)
at moderate
s
peeds
)
.
O
therwise, add 0.3 bar to the pressures
s
h
o
wn
o
n th
e
l
abe
l.
Drivin
g
with under-in
f
lated t
y
res
i
ncreases
f
uel consum
p
tion.