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•
If tll
ly.
side.
n
changed
manu al-
is
too
low.
I
lo
ded
more heavily on one
•
If tile
wh
el
on one
axle
are
loaded more
heavily.
e.g.
high
load
level.
•
If
snow ch ains
h
ve been fitted
.
•
If
a
temper
ry
spare wheel
has
been fitted
.
•
If
one wheel
per
axle
has
been changed
.
In
certain
circumsta nces. the
tyre monitor dis-
play
W
may
become slow or may not display any-
thing
, e.g.
with a sporty
driving style.
in
winter driv-
ing
conditions,
on unpaved
roads
,
or when
driving
with
snow
chains
.
Calibrating the tyre monitor display
The tyre monitor display will
have to be
re-ca libra-
ted after changing
the tyre
pressure
.
or
after
changing
one or more
wheels.
This
also
applies
when
wheels are swapped,
e .g
.
from the
front to
the
rear.
-
•
Switch
on
the ignition
.
•
Open the
Tyre monitor display
menu
op-
tion
in th
e infotai
nment system display
~
page 31
.
•
Touch the
@ID
fun
ction button
.
•
If all
4
wh
eels are se
t to th
e correct values
,
touch th
e
(Confirm
)
function button
to
store
the
tyre
pressu
res.
•
Touching th
e
(cancel)
button
w ill
prevent the
cu r-
rent tyre pressures from being stored
and
the sys-
tem
will
not
be calibrated
.
During
normal
vehicle
operation
,
the system cali-
brates itse
lf
independently
to
the
the
fitted tyres
and
the
tyre
pressures filled by
the
driver.
The
cali-
brated va lues
are
accepted and
monitored
after a
long
journey at
various
speeds
.
If the wh eels are
loaded more
heavily than normal
,
e.g
.
if the
veh icle
is carrying
hea
vy
payload,
the
tyre pressure must
be
rais
ed
to the
recommended
full-load
tyre
pressure before calibration
=>
page
308
.
l : l
The tyre
monitor display stops
worki ng if
W
there
is a malfunction
in the ESC
or
ASS
=>
page
179.
l : l
When
using
snow chains
,
an incorrect
dis-
L!J
play
may
be
shown
as the
snow chains in-
crease
the
tyre
circumference
.
<l
Driver assist
systems
255
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