change wheel Seat Alhambra 2017 Owner's Guide

Driver assistance systems
Driver assistance systems
Br ak
in
g and stability systems
Brake assist systems The brake assist systems ESC, ABS, BAS, ASR
and EDL on
ly

operate when the ignition is
switched on. They contribute significantly to
increasing active safety.
Electronic Stability Control (ESC)
ESC reduces the risk of skidding and increa-
ses the vehicle stability by braking individual
wheels under specific driving conditions. ESC
detects critical handling situations, such as
understeer, oversteer and wheelspin on the
driven wheels. The system stabilises the ve-
hicle by braking individual wheels or by re-
ducing the engine torque.
The ESC has limits. It is important to realise
that the ESC is also subject to the laws of
physics. ESC will not be able to deal with all
situations with which drivers may be faced.
For example, if the road surface changes sud-
denly then ESC will not be useful in all cases.
If the vehicle suddenly enters a section cov-
ered by water, mud or snow then ESC will not
provide assistance in the same way as on dry
ground. If the vehicle loses its grip on the
ground and moves on a film of water (“aqua-
planing”), the ESC will not be able to assist the driver to control the vehicle as the loss of
adher
enc

e with the road surface will prevent-
ing braking and steering. If the vehicle is
driven through series of bends at high
speed, the ESC will not always be as effec-
tive: the vehicle reaction to aggressive driv-
ing is not the same as at reduced speeds.
When driving with a trailer, ESC does not pro-
vide the same amount of vehicle control as
without a trailer.
Adjust your speed and driving style to road,
traffic and weather conditions. ESC cannot
push the limits of the laws of physics; im-
prove the transmission available or maintain
the vehicle on the road if a lack of driver at-
tention creates an inevitable situation. Other-
wise, ESC assists in maintaining vehicle con-
trol in extreme situations and uses the move-
ments of the steering made by the driver to
maintain the vehicle moving in the desired
direction. If the vehicle is driven at such a
speed that it will leave the road before ESC
can intervene then the system cannot pro-
vide assistance.
The ABS, BAS, ASR and EDL systems are in-
corporated into the ESC. The ESC is always
on. The ESC should only be turned off using
the ASR button ›››
Fig. 205 when traction is
insufficient. Always remember to turn on the
ASR once more when the vehicle has traction
again. Anti-lock system (ABS)
ABS can pr
event the wheels from locking dur-
ing braking until just before the vehicle stops
thus helping the driver to steer the vehicle
and maintain control. This means that, even
during full braking, the risk of skidding is re-
duced:
● Press and hold the brake pedal fully. Do not
remov
e your foot from the brake pedal or re-
duce braking force!
● Do not “pump” the brake pedal, or reduce
brakin
g force!
● Maintain vehicle direction when braking
ful
ly.
● When the brake pedal is released or when
the brake f
orce is reduced, ABS is turned off.
ABS control can be observed by vibration of
the brake pedal and noise. You should never
expect the ABS to reduce the braking dis-
tance under any circumstances. This distance
will increase when driving on gravel, recent
snow or on icy and slippery ground.
When driving on loose ground, the all-terrain
configuration of the ABS is automatically
turned on. When ABS is activated, the front
wheels may lock briefly. This shortens the
braking distance in off-road situations as the
wheels are prevented from digging into loose
surfaces. All-terrain ABS only intervenes
when driving in a straight line. When the »
203
Technical data
Advice
Operation
Emergencies
Safety

Driver assistance systems
WARNING
The effectiveness of the ESC can be consider-
ably r
educed if other components and sys-
tems affecting driving dynamics are not main-
tained or are not functioning correctly. This
includes, among others, brakes, tyres and
other systems already mentioned.
● Remember that changing and fitting other
components
to the vehicle can affect opera-
tion of the ABS, BAS, ASL EDL and ESC.
● Changes to the vehicle suspension or using
unap
proved wheel/tyre combinations can af-
fect operation of the ABS, BAS, ASL EDL and
ESC, as well as their effectiveness.
● Likewise, the effectiveness of ESC depends
on the use of s
uitable tyres ››› page 284. Note
● To en s

ure that the ESC and ASR work prop-
erly, all four wheels must be fitted with iden-
tical tyres. Any differences in the rolling radi-
us of the tyres can cause the system to re-
duce engine power when this is not desired.
● If a malfunction should occur in the ABS,
the ESC, EDL and ASR w
ill also be out of ac-
tion.
● Noises may be heard while any of the
above sy
stems are operating. Switching ASR on and off
Fig. 205
Detailed view of the centre console:
b utt
on u

sed to switch ASR on and off (vehi-
cles with ESC) The electronic stability control ESC consists
of
ABS, EDL
and ASR and on

ly works when
the engine is running.
The ASR can be switched off while the engine
is running by pressing the  OFF
› ›
› Fig. 205
b

utton. The ASR (and similar) is only switch-
ed off when the required traction is not ob-
tained:
● When driving through deep snow or on
loose grou
nd (gravel, etc.).
● When “freeing” a trapped vehicle.
Turn the ASR bac
k on by pressing the but-
ton  OFF
›
› ›
Fig. 205
. Start assist systems
Introduction WARNING
The intelligent technology in the start assist
sys t

ems cannot change the laws of physics.
The improved comfort provided by start as-
sist systems should not prompt you to take
risks.
● Unintentional movements of the vehicle
coul
d cause serious injury.
● The start assist systems are not a replace-
ment for driv
er awareness.
● Always try to adapt the speed of the vehi-
cle and
your style of driving to the condition
of the ground or the road and to weather and
traffic conditions.
● The start assist system cannot keep the ve-
hicle s
tationary in all conditions on a gradi-
ent or cause it to brake on steep downhill
gradients, e.g. if the road is slippery or icy. 205
Technical data
Advice
Operation
Emergencies
Safety

Driver assistance systems
Auto Hold turns off automatically under the
f o
l
lowing conditions:
Manual gearboxAutomatic gearbox
1.If one of the conditions mentioned in table on
page 206 changes.
2.If the engine is “not running regularly” or if there is a malfunction.
3.When changing to idle
speed.If the selector lever is
placed in neutral (N).
4.If the engine is turned
off or stalls.If the engine is switch-
ed off.
5.If the driver accelerates
while pressing the
clutch in.If the vehicle is acceler-
ated.
6. When one of the wheels
has minimal contact
with the ground (e.g. on
uneven ground).WARNING
The Auto Hold technology is limited by the
la w

s of physics. The improved comfort provi-
ded by Auto Hold should never prompt you to
take risks.
● Never leave the vehicle running and with
the Auto Hol
d function switched on.
● Auto Hold cannot always stop the vehicle
uphill
and downhill (e.g. if the ground is slip-
pery or frozen). CAUTION
Before entering an automatic car wash, al-
wa y

s switch the Auto Hold function off, as it
could be damaged when the electronic park-
ing brake automatically engages. Start-Stop Function*
Fig. 207
Detailed view of the centre console:
St ar
t

-Stop function button With the Start-Stop system enabled, the en-
gine i
s
aut

omatically stopped when the vehi-
cle is at a standstill. The engine restarts auto-
matically when required.
The function is enabled automatically when-
ever the ignition is switched on. The instru-
ment panel displays information on the cur-
rent status. Vehicles with a manual gearbox
● When the vehicle is at a standstill, leave it
in neutral and t
ake your foot off the clutch.
The engine switches off.
● Simply depress the clutch pedal to move
off again.
V

ehicles with an automatic gearbox
● When the vehicle is at a standstill, depress
the brake or k
eep it pressed down. The en-
gine switches off.
● The engine will start again as soon as you
rele
ase the brake pedal.
● With the selector lever set to position P, the
engine wi
ll not start until a range of gears is
selected or the accelerator pedal is de-
pressed.
Important conditions for the engine to auto-
matically switch off
● The driver seat belt must be buckled.
● The driver door must be closed.
● The bonnet must be closed.
● The factory-fitted towing bracket must not
be electrical
ly connected to a trailer.
● A minimum engine temperature has been
reac
hed.
● The steering wheel must not be turned
more than 270 de
grees.
● The vehicle has moved since the last stop. »
207
Technical data
Advice
Operation
Emergencies
Safety

Operation
● Ther e i
s
a system malfunction (system tem-
porarily unavailable).
● The ASR system is switched off or the ASR
or ESC i
s working. WARNING
The steering wheel turns quickly by itself
when park in

g using the park assist system.
Placing your hand between the steering
wheel spokes could lead to injuries. Note
● The park a

ssist system has its limitations.
For example, it is not possible to park on
tight bends using the park assist system.
● Even if the park assist system recognises
that ther
e is not enough space for parking
the vehicle, the instrument panel display will
still show this place. In this case, the parking
manoeuvre should not be requested.
● Changing gears between forward and re-
verse g
ears before indicated (that is, before
the signal from the parking sensor system)
the parking results may not be ideal.
● For parallel parking (parallel to the road), a
sound wi
ll tell the driver when they must
change from forward gears to reverse; the
signal from the parking sensor system does
not indicate changes of direction.
● The park assist can also be activated after-
ward
s, if you pass close to a parallel parking
space at a maximum of 40 km an hour
(25 mph) or close to be perpendicular parking space at about 20 km an hour (12 mph) then
pre
s

s the button  .
● The progress bar on the screen of the in-
strument p

anel shows a display of the rela-
tive distance to be covered.
● When the Park Assist system is turning the
steerin
g wheel of the stopped vehicle the
symbol  is also displayed. Press on the
brake pedal so that the steering can turn with
the vehicle at a standstill and thus reduce the
number of manoeuvres.
● A “suitable” parking space length is at
lea
st 1.1 m greater than the length of the ve-
hicle.
● If the results of the park assist system are
not as
good after changing the wheels, the
system must memorise the perimeter of the
new wheels. This process is performed auto-
matically while the vehicle is in motion. To
help this process, turn slowly (at less than
20 km/h [12 mph]), e.g. in an empty car park. Leaving a parking space using the
P
ark
As

sist system Driving off
● Switch on the engine.
● Press button  . When the function is ena-
b l
ed, the b

utton ››› Fig. 212 will light up.
● Apply the turn signal for the side on which
you w ant

to leave the parking space.
● Select reverse gear. ●
Fo l

low the instructions given by the park
assist system.
● When the next indication appears, release
the steerin
g wheel ››› in Parking using the
p ark
a
ssist system on page 214: The sys-
tem will move the steering wheel!
Observe the surrounding area.
● Observe the surrounding area and acceler-
ate car
efully at a maximum of 7 km/h
(4 mph).
● The park assist system is only r
esponsible
for moving the steering wheel during the ma-
noeuvre. The driver applies the accelerator,
the clutch, the gears and the brake.
● When it is possible to leave the parking
spac
e, the Park Assist system will stop. Take
control of the steering and when traffic condi-
tions permit, leave the parking space.
Automatic stoppage of the manoeuvre
The park assist system stops the manoeuvre
in the event of one of the following:
● Driving faster than 7 km/h (4 mph).
● The driver moves the steering wheel.
● A sliding door is opened. To restart the ma-
noeuvre, c
lose the sliding door and press the
button  again.
● There is a system malfunction (system tem-
por ari
ly

unavailable).
● The ASR system is switched off or the ASR
or ESC i
s working.
214

Driver assistance systems
WARNING
The steering wheel turns quickly automatical-
ly when l e
aving a parking space using the
park assist system. Placing your hand be-
tween the steering wheel spokes could lead
to injuries. Park Assist brake operation
The Park Assist system helps the driver by
brak
in

g automatically. Automatic braking
does not relieve the driver of responsibility
for controlling the accelerator, brake and
clutch ››› .
Br ak
in

g to avoid damage at excess speed
It is possible that the system operates the
brakes to reduce excess speed. The parking
manoeuvre can then continue. The brakes
will intervene during each parking process.
Braking to minimise damage
When approaching an obstacle, the vehicle
may brake automatically. In certain circum-
stances (e.g. storm, detection of ultrasounds,
vehicle status, load, inclination), the Park As-
sist system may stop the vehicle completely
before an object.
● Press the foot brake ››
›
!Following the intervention of the brakes, the
P
ark
As

sist will stop. WARNING
Despite the assistance provided by the park
as s

ist system, do not run any risks when
parking. The system is not a replacement for
driver awareness.
● Always be ready to brake.
● Automatic brake intervention will end after
1.5 seconds
approximately. Following auto-
matic intervention of the brakes, stop the ve-
hicle yourself. Rear assist* (Rear View Cam-
er
a)
Intr oduction The camera fitted to the rear lid helps drivers
durin
g p
ark

ing or reversing manoeuvres. The
camera image and certain orientation points
generated by the system are indicated on the
factory-fitted radio or navigation system
screen.
Two types of location point (modes) can be
selected:
● Mode 1: reverse parking perpendicular to
the ro
ad (e.g. in a car park). ●
Mode 2: rever
se parking parallel to the
curb.
The mode can be changed by pressing the
button on the radio or navigation system
screen. Only the mode to which the points
can be changed will be displayed. WARNING
Use of the camera to calculate the distance
from o b

stacles (people, vehicles, etc.) is inac-
curate and may cause accidents and severe
injuries.
● The camera lens expands and distorts the
field of
vision and displays the objects on the
screen in a different, vague manner.
● Some objects may not be displayed or may
not be v
ery clear (e.g. very thin posts or fen-
ces), due to the resolution of the monitor or if
the light is dim.
● The camera has blind spots in which obsta-
cle
s and people are not detected.
● Keep the camera lens clean and clear of
snow and ic
e. Do not cover it. WARNING
The intelligent technology in the rear assist
sys t

em cannot change the limits imposed by
the laws of physics and by the system itself.
Careless or uncontrolled use of the rear assist
system may result in severe injuries and acci-
dents. The system is not a replacement for
driver awareness. » 215
Technical data
Advice
Operation
Emergencies
Safety

Operation
●
Never u se the C
CS when driving off-road or
on unpaved roads.
● Always adapt your speed and the distance
to the v
ehicles ahead in line with visibility,
weather conditions, the condition of the road
and the traffic situation.
● To avoid unexpected operation of the cruise
contro
l system, turn it off every time you fin-
ish using it.
● It is dangerous to use a set speed which is
too high for the pr
evailing road, traffic or
weather conditions.
● When travelling down hills, the CCS cannot
maintain a c
onstant speed. The vehicle tends
to accelerate under its own weight. Select a
lower gear or use the foot brake to slow the
vehicle. Lane Assist system*
Intr oduction WARNING
The intelligent technology in the lane assist
sys t

em cannot change the limits imposed by
the laws of physics and by the system itself.
Careless or uncontrolled use of the Lane As-
sist system may cause accidents and injury.
The system is not a replacement for driver
awareness. ●
Alw a

ys adapt your speed and the distance
to the vehicles ahead in line with visibility,
weather conditions, the condition of the road
and the traffic situation.
● Always keep your hands on the steering
wheel so y
ou can turn it at any time.
● The lane assist system does not detect all
roa
d markings. In some circumstances, the
poor state of the road, structures located on
it or certain objects may be mistakenly recog-
nised as road markings by the lane assist
system. In such situations, switch the lane
assist system off immediately.
● Pay attention to the instructions on the in-
strument p
anel display and act accordingly to
its requests.
● Always pay attention to the vehicle's sur-
roundin
gs. Note
The lane assist system has been exclusively
developed f or driv

ing on asphalted roads. Note
If the lane assist system does not work as de-
sc ribed in thi

s chapter, do not use it and con-
tact a specialised workshop. Note
If you observe any system malfunction, have
the sys t

em checked by a specialised work-
shop. Control lamps

Blinks or lights up yellow:
Lane assist sys-
tem connected
but inactive.The system cannot clearly detect the
lane. See
page 221, The lane assist
system is inactive (control lamp lit
in yellow) . 
Blinks or lights up green:
Lane assist system connected and active.
Several warning and control lamps light up
f
or a f
ew sec

onds when the ignition is switch-
ed on, signalling that the function is being
verified. They will switch off after a few sec-
onds. WARNING
Observe the safety warnings ›››
in Control
and warnin g l
amps on page 105. 220

Driver assistance systems
Operation mode Fig. 219
In the windscreen: field of vision of
the l ane a
s
sist system camera. Using the camera located in the sun visor,
the l
ane a
s

sist system detects the possible
lines dividing it. When the vehicle involuntar-
ily approaches a dividing line it has detected,
the system will notify the driver with a correc-
tive intervention. It is possible to over-regu-
late the corrective intervention at any time.
If the turn signal is connected, there will be
no warning as the lane assist system under-
stands that you wish to change lanes volun-
tarily.
Steering wheel vibration
The following situations cause the steering
wheel to vibrate and require the driver to take
active control of the steering: ●
If the limits inher
ent to the system are
reached.
● If the maximum rotational torque during
the correctiv
e intervention is not enough to
keep the vehicle inside the lane.
● If during the corrective intervention by the
syst
em the lane is no longer detected.
Switching the lane assist system on or off
● Select the corresponding menu option us-
ing the butt
on for the driver assist systems
›››  page 26.
● OR: activate or deactivate the system in the
menu Settings , sub-menu Assist sys-
tems , menu

Lane Assist ›››
 page 26.
The “confirmation sign” indicates that the
driver assist system is switched on.
Automatic deactivation: the lane assist sys-
tem can be deactivated automatically if there
is a system malfunction. Control lamp
switches off.
The lane assist system is inactive (control
lamp lit in yellow)
● When driving speed drops to approx.
65 km/h (40 mph).
● When the Lane Assist system does not de-
tect the div
iding lines of the road. For exam-
ple, in the event of road works, and snow,
dirt, moisture or reflections.
● When the radius of a curve is too small. ●
When there is
no dividing line.
● When the distance to the next dividing line
is e
xcessive.
● When there are more than two lane mark-
ings
per lane.
● When the ASR is switched off.
● When the system does not detect any ac-
tive rot
ation of the steering wheel by the driv-
er during a prolonged period.
● Temporarily, in the event of very dynamic
driving.
● When the t

urn signal is connected. Note
● Bef or

e starting travel, verify that the cam-
era's field of vision is not covered ››› Fig. 219.
● Keep the camera window clean. Disconnect the lane assist system in
the f
o
l

lowing situations Due to the limits of the Lane Assist system,
sw
it
c

h it off in the following situations:
● When more attention is required of the
driver
● For

very sporty driving
● In very unfavourable weather conditions
● In very unfavourable road conditions
● In areas of road works 221
Technical data
Advice
Operation
Emergencies
Safety

Driver assistance systems
DCC continuously adapts the suspension to
the c ondition of
the r
oad and current driving
conditions, according to the pre-set pro-
gramme.
Steering is also adapted in the “Sport” pro-
gramme.
ProgrammeDriving recommendations
“COMFORT” C
Adjust it to the most comfortable set-
ting, for example, driving on surfaces
in poor condition, or making long
trips.
“NORMAL”Balanced setting, suitable, for exam-
ple, for day-to-day use.
“SPORT” SSport setting for sporty style driving Select a program
● Switch the ignition on.
● Press the C  S butt
on r
epeatedly until the
desired programme is displayed.
The “NORMAL” programme is active when
neither the C nor S buttons are lit up. WARNING
Switching the dynamic chassis control sys-
tem on whi l

e the vehicle is in motion could
divert your attention from the traffic and
cause accidents. WARNING
Adjusting the suspension can change driving
proper tie

s. Dynamic chassis control must
never lead to any kinds of risk.
● Adapt your speed and driving style at all
times t
o suit visibility, weather, road and traf-
fic conditions. Note
If the dynamic chassis control does not oper-
ate a s

described in this chapter, go to an au-
thorised workshop and request it be checked. Note
In case of a fault in the dynamic chassis con-
tro l, the b

uttons C and S will so indicate. A
fault could the affect driving comfort. Have
the system checked by a specialised work-
shop. Tyre monitoring systems
Intr oduction The tyre monitor indicator monitors the tyre
pr
e
s

sure of each wheel during driving using
the ABS sensors. The ABS sensors monitor
the tyre tread perimeter and vibrations of
each tyre. The tyre monitor indicator warns
the driver if it detects a considerable drop in
tyre pressure of one or several tyres while driving. Loss of tyre pressure will be indica-
ted by

the indicator  as well as an audible
warning and sometimes a text message on
the dash panel display. When you open the
driver door, you will find a label indicating
the tyre pressure recommended by the manu-
facturer for the maximum vehicle load for
each tyre approved for the vehicle in ques-
tion. By pressing the adjustment button on
the tyre monitoring indicator, you may
change the reference pressure for the tyres
so that the tyre pressure coincides with ac-
tual pressure ››› page 233.
Suitable use of the adjustment button
››› page 233. WARNING
Unsuitable handling of the wheels and tyres
ma y

lead to sudden tyre pressure losses, to
tread separation or even to a blow-out.
● Check tyre pressures regularly and ensure
they are m
aintained at the pressures indica-
ted. If the tyre pressure is too low, the tyres
could overheat, resulting in tread detachment
or even burst tyres.
● Tyre pressure should be that indicated on
the label when the ty
res are cold at all times
››› page 288.
● Regularly check the cold inflation pressure
of the tyr
es. If necessary, change the tyre
pressure of the vehicle tyres while they are
cold. » 231
Technical data
Advice
Operation
Emergencies
Safety

Operation
●
Re gu
larly check your tyres for damage and
wear.
● Never exceed the maximum permitted
speed or loa
ds specified for the type of tyre
fitted on your vehicle. WARNING
Incorrect use of the tyre monitoring indicator
b utt on c

ould result in the indicator giving er-
roneous messages or prevented from indicat-
ing the danger caused by a defective tyre
››› page 233. CAUTION
● The tyr e

valves may be damaged if the cap
is not in place. Check that the caps are identi-
cal to the standard caps and have been cor-
rectly tightened. Do not use metal caps
››› page 233.
● Do not damage the valves when changing
the tyre
s ››› page 233. For the sake of the environment
Under-inflated tyres lead to increased fuel
con s

umption and tyre wear. Note
● Do not on ly

rely on the tyre monitoring sys-
tem. Regularly check your tyres to ensure
that the tyre pressure is correct and that the
tyres are not damaged due to puncture, cuts, tears and impacts/dents. Remove objects
from the ty
r

es only when the tyres have not
been pierced by these.
● The tyre monitoring system is set to the
tyre pr
essure recommended by the manufac-
turer and indicated on the label ››› Fig. 251. Elements of the tyre monitoring indi-
cat
or
Tyre monitoring indicator with button.
See ››› page 233. 
Control lamp  on the instrument panel.

 SET button on the centre console.

Monitoring the tread of all tyres using ABS sensors
(indirect measurement). 
Adjustable medium and full-load tyre pressures.

Button to update the system when the tyre pressure is
changed. Control lamp

Blinks or lights up
The tyre pres-
sure of a wheel
has dropped
considerably in
relation to the
pressure set by
the driver
››› page 233.  Stop the vehicle!
Reduce your
speed immediately! Stop the vehicle
safely as soon as possible. Avoid
sudden manoeuvres and braking!
Check all tyres and pressures. Re-
place any damaged tyres.
System malfunc-
tion.
Consult a specialised workshop if
the tyre pressure is correct and the
lamp remains lit after switching the
ignition off and back on again. Have
the system checked there. Several warning and control lamps light up
f
or a f
ew sec

onds when the ignition is switch-
ed on, signalling that the function is being
verified. They will switch off after a few sec-
onds. WARNING
Observe the safety warnings ›››
in Control
and warnin g l
amps on page 105. WARNING
When the tyres are inflated at different pres-
sur e

s or at a pressure that is too low then a
tyre may be damaged resulting in a loss of
control of the vehicle and a serious or fatal
accident. 232

Driver assistance systems
●
If the w arnin
g lamp  lights up, stop im-
mediately and check the tyres.
● If the tyres are inflated at different pres-
sure
s or if a tyre pressure is too low, this will
increase tyre wear, negatively affecting vehi-
cle stability and increasing braking distan-
ces.
● If tyres are inflated at different pressures or
a tyre pr
essure is too low, a tyre may be dam-
aged and burst resulting in a loss of control
of the vehicle.
● The driver is responsible for ensuring that
all
of the vehicle tyres are correctly inflated
to the right pressure. The recommended tyre
pressure is indicated on the label ››› Fig. 251.
● The tyre monitoring system can only oper-
ate corr
ectly if all of the tyres are inflated to
the correct pressure when cold.
● Driving with tyres at the wrong pressure
can dam
age them and result in an accident.
Ensure that the tyre pressures of all the tyres
correspond to the vehicle load.
● Before starting a journey, always inflate
tyre
s to the correct pressure.
● If tyre pressure is too low then the tyre is
subj
ect to greater forces and it may be heated
to such an extent that the tread can rupture
and the tyre will burst.
● With an overloaded vehicle at high speed,
the tyre
s can overheat and burst resulting in
a loss of vehicle control.
● Tyre pressures which are too high or too
low reduc
e the useful life of the tyre, affect-
ing vehicle performance. ●
If a ty r

e has not been “punctured” and does
not have to be changed immediately, drive to
the nearest specialised workshop at a moder-
ate speed and have the tyre checked and in-
flated to the correct pressure. Tyre monitoring indicator
Fig. 228
Detailed view of the centre console:
b utt
on f

or the tyre pressure monitoring indi-
cator The tyre monitor indicator compares wheel
r
ev
o

lutions and, with this information, the
tread of each wheel using the ABS sensors. If
the tread of a wheel is changed, the tyre
monitoring indicator will indicate as such on
the instrument panel. The wheel tread
changes when:
● Tyre pressure is insufficient
● Tyre structure is damaged ●
The vehic
le is unbalanced because of a
load
● If the wheels on an axle are subject to a
heavier lo
ad (e.g. when towing a trailer).
● The vehicle is fitted with snow chains
● The wheel on one axle is changed
There ma
y be a delay in the reaction of the
tyre monitoring indicator  or it may not in-
dicate anything under certain circumstances
(e.g. sports driving, snow-covered or un-
paved roads).
Adaptation of the tyre monitoring indicator
On adjusting tyre pressure or changing one
or more wheels, the ››› Fig. 228 button on the
tyre monitoring indicator must be kept press-
ed down, with the ignition on, until an audi-
ble warning is heard. Do the same, for exam-
ple, when the front and rear wheels are swap-
ped ››› Fig. 250.
If the wheels are subjected to an excessive
load (towing a trailer, heavy load), the tyre
pressure must be increased to the maximum
recommended pressure ››› page 284. Press
the tyre monitoring indicator button to con-
firm the new pressure value. Note
An incorrect warning may be given when
sno w c

hains are in use because the chains in-
crease the tread of the wheel. 233
Technical data
Advice
Operation
Emergencies
Safety