148
Under-inflation detection
The system monitors the pressures in the four ty
res, o nce t he v ehicle i s m oving.
It
c
ompares
t
he
i
nformation
g
iven
b
y
t
he
f
our
wh
eel
s
peed
s
ensors
w
ith
re
ference values,
which must be reinitialised ever y time the
tyre pressures are adjusted or a wheel
changed .
The
s
ystem
t
riggers
a
n
a
lert
a
s
s
oon
a
s
i
t
de
tects
a d
rop
i
n
t
he
i
nflation
p
ressure
o
f
o
ne
or m
ore
t
yres. The u
nder-inflation d etection s ystem do
es
n
ot
r
eplace
t
he
n
eed
f
or
v
igilance
on t
he
p
art
o
f
t
he
d
river.
This
s
ystem
d
oes
n
ot
a
void
t
he
n
eed
t
o
ch
eck
t
he
t
yre
p
ressures
(
including
t
he
sp
are
w
heel)
e
very
m
onth
a
s
w
ell
a
s
be
fore
a l
ong
j
ourney.
Driving
w
ith
u
nder-inflated
t
yres
i
mpairs
ro
ad
h
olding,
e
xtends
b
raking
d
istances
an
d
c
auses
p
remature
t
yre
w
ear,
pa
rticularly
u
nder
a
rduous
c
ondition
(h
igh
l
oading,
h
igh
s
peed,
l
ong
j
ourney).
System
w
hich
a
utomatically
c
hecks
t
he
p
ressures
o
f
t
he
t
yres
w
hile
d
riving.
The i nflation p ressures d efined f or yo
ur
v
ehicle
c
an
b
e
f
ound
o
n
t
he
t
yre
pr
essure
l
abel.
For
m
ore
i
nformation
o
n
t
he
id
entification
m
arkings,
r
efer
t
o
t
he
cor
responding
se
ction.
Tyre
p
ressures
s
hould
b
e
c
hecked
wh
en
t
he
t
yres
a
re
"
cold"
(
vehicle
st
opped
f
or
1 h
our
o
r
a
fter
a j
ourney
o
f
le
ss
t
han
6 m
iles
(
10
k
m)
a
t
m
oderate
spe
eds).
Other wise
(
when
h
ot),
a
dd
0
.3
b
ar
t
o
th
e
p
ressures
s
hown
o
n
t
he
l
abel.
Driving
w
ith
u
nder-inflated
t
yres
in
creases
f
uel
c
onsumption.
Driving
