sensor Seat Arona 2017 User Guide

Opening and closing
blocked for engine ignition ››
› page 168. In
order to enable engine ignition, the button
on the key  inside the vehicle needs to be
pr e
s

sed.
Automatically disabling sensors
If the vehicle is not locked or unlocked for a
long period of time, the proximity sensors on
the passenger doors are automatically disa-
bled.
If one of the sensor surfaces on the door han-
dles is often activated in an unusual manner
with the vehicle locked (e.g. by the branches
of a bush rubbing against it), all proximity
sensors are disabled for a certain period of
time.
Sensors will again be enabled: ● After a time.
● OR: if the vehicle is unlocked with the but-
ton  on the key.
● OR: if the rear lid is open.
● OR: if

the vehicle is unlocked manually with
the key
.
Keyless Access temporary disconnection
function
There is a sequence of actions to be followed
if you wish to temporarily deactivate Keyless
Access. First of all, lock the vehicle with the
key. As of this moment, you have 5 seconds to perform the second locking action through
the door handle sen

sor.
If this second action is performed more than
5 seconds after the vehicle is locked with the
key, it will not be possible to deactivate Key-
less Access.
Once Keyless Access has been temporarily
deactivated, the vehicle can only be unlocked
using the key. The Keyless Access function
will be reactivated once it has been unlocked.
Convenience functions
To close all the electric windows using the
convenience function, keep a finger on the
locking sensor surface ››› Fig. 141 B (arrow)
of the door h
andl

e for a few seconds until the
windows have closed.
The doors opened by touching the sensor
surface of the door handle depend on the
settings that have been activated in the Easy
Connect system with the  button and the
S ET
TINGS and
Openin
g and c
lo
sing function but-
t on
s. CAUTION
The sensor surfaces on the door handles
cou l

d engage if hit with a water jet or high
pressure steam if there is a valid vehicle key
in the proximity. If at least one of the electric
windows is open and the sensor surface B (arrow) on the handle is activated continu-
ous
ly

, all windows will close. Note
● If the v

ehicle battery has little or no charge,
or the vehicle key battery is almost or entire-
ly out of charge, you will probably not be able
to lock or unlock the vehicle with the Keyless
Access system. The vehicle can be unlocked
or locked manually.
● To control the proper locking of the vehicle,
the rele
ase function is disabled for approx. 2
seconds.
● If the message Keyless access system
faulty is di

splayed on the screen of the
dash panel, abnormalities may occur in the
operation of the Keyless Access system. Con-
tact a specialised workshop. SEAT recom-
mends visiting a SEAT dealership for this.
● Depending on the function set on the info-
tainment sy
stem for the mirrors, the exterior
mirrors will unfold and the surround lighting
will come on when unlocking the vehicle us-
ing the sensor surface on the driver door han-
dle.
● If there is no valid key inside the vehicle or
the syst
em fails to detect one, a warning will
display on the dash panel screen. This could
happen if any other radio frequency signal in-
terferes with the key signal (e.g. from a mo-
bile device accessory) or if the key is covered
by another object (e.g. an aluminium case).
● If the sensors are very dirty, e.g. have a lay-
er of sa
lt, the correct functioning of the sen-
sors on the door handles may be affected. In
this case, clean the vehicle. » 131
Technical data
Advice
Operation
Emergencies
Safety

Opening and closing
When does the system trigger an alarm?
The sy s
t
em triggers an alarm, if the following
unauthorised actions are carried out when
the vehicle is locked:
● Mechanical opening of the vehicle with the
vehicl
e key without switching on the ignition
in the next 15 seconds (in certain markets,
such as the Netherlands, the alarm is activa-
ted immediately).
● A door is opened.
● Opening the bonnet.
● The rear lid is opened.
● Ignition switched on with a non-validated
key.
● Mo

vements in the driving compartment
(vehicl
es with a volume sensor).
● Towing of the vehicle 1)
.
● Vehicle tilt angle 1)
.
● Undue manipulation of the alarm.
● Battery handling.
In this c
ase, the acoustic signals will go off
and the turn signal will flash for approximate-
ly 30 seconds. This cycle may be repeated up
to 10 times depending on the country. Opening all the doors in manual mode
In vehic

les without an alarm, when opening
the driver door manually, all doors are
opened.
How to switch the alarm off
To deactivate the anti-theft alarm, turn the
key in the opening direction, open the door
and switch the ignition on, or press the un-
lock button  on the remote control.
In vehicles equipped with an anti-theft alarm
system, you have 15 seconds to insert the
key in the ignition lock and activate the igni-
tion if the vehicle is opened using the driver
door key.
Otherwise, the alarm will trigger for 30 sec.
and the ignition will be blocked. Note
● Aft er 28 d

ays, the indicator light will be
switched off to prevent the battery from
draining if the vehicle has been left parked
for a long period of time. The alarm system
remains activated.
● The alarm will trigger again if attempts are
made t
o open another protection zone.
● The alarm system can be activated or deac-
tivated u
sing the radio frequency remote con-
trol ››› page 124. ●
The anti-theft a

larm is not activated when
the vehicle is locked from within using the
central locking button .
● If the vehicle battery is run down or flat
then the anti-theft a
larm will not operate cor-
rectly.
● Vehicle monitoring remains active even if
the batter
y is disconnected or not working for
any reason.
● The alarm is triggered immediately if one of
the batter
y cables is disconnected while the
alarm system is active. Vehicle interior monitoring and anti-
t
o
w sy

stem* Monitoring or control function incorporated
in the anti-thef
t
al

arm* which detects unau-
thorised vehicle entry by means of ultra-
sound.
Activation
– It is automatically switched on when the
anti-theft al

arm is activated.
Deactivation – Open the vehicle with the key, either me-
chanic

ally or by pressing the  button on
the remote control. If the vehicle is opened »1)
With vehicles fitted with a tow-away protection
133
Technical data
Advice
Operation
Emergencies
Safety

Operation
mechanically, the time period from when
the door i s
opened u
ntil the key is inserted
into the contact should not exceed 15 sec-
onds, otherwise the alarm will be triggered.
– Press the button  on the remote c
ontrol
twice. The volumetric sensor and tilt sen-
sors will be deactivated. The alarm system
remains activated.
The vehicle interior monitoring and the anti-
tow system are automatically switched on
again next time the vehicle is locked.
The vehicle interior monitoring and anti-tow
sensor (tilt sensor) are automatically switch-
ed on when the anti-theft alarm is switched
on. In order to activate it, all the doors and
the rear lid must be closed.
If you wish to switch off the vehicle interior
monitoring and the anti-tow system, it must
be done each time that the vehicle is locked;
if not, they will be automatically switched on.
The vehicle interior monitoring and the anti-
tow system should be switched off if animals
are left inside the locked vehicle (otherwise,
their movements will trigger the alarm) or
when, for example, the vehicle is transported
or has to be towed with only one axle on the
ground. False alarms
Interior monitorin

g will only operate correctly
if the vehicle is completely closed. Please ob-
serve related legal requirements.
The following cases may cause a false alarm:
● Open windows (partially or fully),
● Movement of objects inside the vehicle,
such a
s loose papers, items hanging from
the rear vision mirror (air fresheners), etc. Note
● If the v

ehicle is relocked and the alarm is
activated without the volumetric sensor func-
tion, relocking will activate the alarm with all
its functions, except the volumetric sensor.
This function is reactivated when the alarm is
switched on again, unless it is deliberately
switched off.
● If the alarm has been triggered by the volu-
metric sensor
, this will be indicated by a
flashing of the warning lamp on the driver
door when the vehicle is opened. The flash is
different to the flash indicating the alarm is
activated.
● The vibration of a mobile phone left inside
the vehic
le may cause the vehicle interior
monitoring alarm to trigger, as both sensors
react to movements and shakes inside the ve-
hicle.
● If on activating the alarm, any door or the
rear lid i
s open, only the alarm will be activa-
ted. The vehicle interior monitoring and the anti-tow system will only be activated once
al
l

the doors are closed (including the rear
lid). Deactivating the vehicle interior moni-
torin
g and anti-t

ow systems* When the vehicle is locked, the alarm will be
trigg
er

ed if movements are detected in the
interior (e.g. by animals) or if the vehicle's in-
clination is changed (e.g. during transport).
You can prevent the alarm from being trig-
gered accidentally by switching off the vehi-
cle interior monitoring and/or tow-away pro-
tection.
– To switch off the interior monitoring and
to w-

away protection, switch off the ignition
and, using the Infotainment system, select:  button >
S
ET
TINGS function button >
Openin g and c
lo

sing > Central locking >
Switch off alarm.
– When the vehicle is locked now, the vehicle
interior monitorin

g and the tow-away pro-
tection are switched off until the next time
the door is opened.
If the anti-theft security system (Safelock)*
››› page 127 is switched off, the vehicle interi-
or monitoring and the tow-away protection
are automatically switched off.
134

Operation
Switching lights on and off Read the additional information carefully
›› ›
 page 30
The driver is personally responsible for the
correct use and adjustment of the lights in all
situations. Note
● The le g

al requirements regarding the use of
vehicle lights in each country must be ob-
served.
● The dipped beam headlights will only work
with the ignition on. The s
ide lights come on
automatically when the ignition is turned off.
● If the lights are left on after the key has
been taken out
of the ignition lock, an audi-
ble warning sounds while the driver door re-
mains open. This is a reminder to switch the
lights off.
● The rear fog light can dazzle drivers behind
you. Y
ou should use the rear fog light only
when visibility is very poor. For this reason, if
you exceed approximately 60 km/h (38 mph),
the instrument panel will display the follow-
ing warming: Switch off the fog light!
● The use of the lighting described here is
subj
ect to the relevant statutory require-
ments. Automatic lighting*
Activation
– Rotate the switch to the  po
sition, this
indication will light up.
Deactivation
– Turn the light switch to .
Automatic
lighting
If automatic headlight control is switched on,
dipped beam headlights are automatically
switched on by a photosensor if you drive in-
to a tunnel, for example. WARNING
● Ev en if

the automatic headlight control is
switched on, the dipped beam headlights will
not be switched on with fog. Therefore, the
dipped beam must be switched on manually. Note
● For v

ehicles with the automatic headlight
system, when the key is removed from the ig-
nition, the audible warning will only sound if
the light knob is in position .
● The use of the lighting described here is
subj
ect to the relevant statutory require-
ments. ●
Do not p ut

stickers on the windscreen in
front of the sensor. This may cause disrup-
tions or faults in the automatic lighting sys-
tem.
● The rain sensor switches on the dipped
beam hea
dlights when the windscreen wipers
have been operating continuously for a few
seconds and it switches the lights off when
the continuous or interval wipe is switched
off for some minutes. Daytime running lights
The daytime running lights consist of individ-
ual
lights, int
e

grated in the front headlights.
By connecting the daytime running lights,
these lights are switched on 1)
››› .
The d a
ytime ru

nning lights switch on every
time the ignition is switched on, if the switch
is in positions  or , according to the level
of exterior lighting.
When the light switch is in position , a
light sensor automatically switches dipped
beam on and off (including the control and
instrument lighting) or the daytime running
lights depending on the level of exterior
lighting. 1)
On vehicles equipped with rear LED lights, the rear
side light i

s switched on as well.
138

Operation
are already on. The warning lamp
 then
come s
on in the instrument panel.
● The headlight flasher come
s on for as long
as you pull the lever – even if no other lights
are switched on. The warning lamp  then
comes on in the instrument panel.
● When the parking ligh
ts are switched on,
the headlight and the tail light on the corre-
sponding side of the vehicle light up. The
parking lights will only work with the ignition
off. If said light is on, an audible warning will
be emitted while the driver door is open.
● If the turn signal lever is left on after the
key h
as been taken out of the ignition lock,
an acoustic signal sounds when the driver
door is opened. This is intended as a remind-
er to switch off the turn signal, unless you
wish to leave the parking light on. Coming Home/Leaving Home Func-
tion*
Fig. 145
Related video The Leaving Home function is controlled with
a phot
o
sen

sor. If the Coming Home or Leaving Home func-
tion is c

onnected, the front side and dipped
lights, the tail lights and the number plate
light will light up to provide assistance.
Coming home function
The Coming Home function is activated by
switching off the ignition. When the driver
door is opened, the Coming Home lighting
comes on.
The Coming Home lighting switches off in the
following cases:
● If, 30 seconds after being connected, any
doors or the r
ear lid remain open.
● If the light switch is turned to position .
● If the ignition is switched on.
Automatic
Leaving Home function
The Leaving Home function is activated when
the vehicle is unlocked if:
● the light control is in position  and
● the photo

sensor detects “darkness”.
The Leav
ing Home lighting switches off in the
following cases:
● If the time period for the delay in switching
off the hea
dlights has ended
● If the vehicle is locked again.
● If the light switch is turned to position .●
If the ignition is
switched on. Note
● To activ at

e the Coming/Leaving home func-
tion, the rotary light switch must be in posi-
tion  and the light sensor must detect
darkness. Fog lights with cornering function*
This is an additional light source to dipped
beam he
a

dlights to light up the road as a
bend is taken.
The cornering light operates with the lights
switched on and when driving at less than
40 Km/h (25 mph). Ignition occurs by turning
the steering or connecting the turn signal.
Forward gear
● If the steering wheel is turned to the right,
or the right-h and t

urn signal operated, the
right-hand fog light turns on.
● If the steering wheel is turned to the left, or
the left
-hand turn signal operated, the left-
hand fog light turns on.
In reverse, both fog lights turn on. Note
When the fog lamps are on, the cornering
fu nction i

s activated and both headlights are
continuously on. 140

Operation
could otherwise freeze on the windscreen and
ob
s
cure your view of the road.
● Always note the corresponding warnings
›››

 page 69. WARNING
The rain sensor* may not detect enough rain
t o sw it

ch on the wipers.
● If necessary, switch on the wipers manually
when water on the w
indscreen obstructs visi-
bility. CAUTION
In icy conditions, always check that the wind-
sc r

een wipers and the window wiper are not
frozen. If you switch on the windscreen wip-
ers when the wiper blades are frozen to the
windscreen, you could damage both the wip-
er blades and the wiper motor. Note
● The wiper s

and washers will work only
when the ignition is switched on.
● The heat output of the heated jets* is con-
trol
led automatically when the ignition is
switched on, depending upon the outside
temperature.
● In certain versions of vehicles with alarms,
the winds
creen wiper will only work in inter-
val/rain sensor mode when the ignition is on
and the bonnet closed. ●
When the inter v

al wipe function is on, the
intervals are directly proportional to the
speed. This way, the higher the vehicle speed
the shorter the intervals.
● If you stop the vehicle with the windscreen
wiper in pos
ition 1 or 2, it will automatically
change to a lower position speed. The set
speed will be resumed when the vehicle pulls
away.
● The windscreen will be wiped again after
appro
ximately five seconds once the “auto-
matic wash/wipe system” has been activa-
ted, provided the vehicle is moving (drip func-
tion). If you activate the wipers less than 3
seconds after the drip function, a new wash
sequence will begin without performing the
last wipe. For the “drip” function to work
again, you have to turn the ignition off and
then on again.
● Do not put stickers on the windscreen in
front of
the rain sensor*. This may cause sen-
sor disruption or faults.
● Depending on the version of the model,
when you en
gage reverse gear and with the
headlight wiper activated, this can start a
wipe. Rear view mirrors
Int erior mirr or It is dangerous to drive if you cannot see
c
le

arly through the rear window. Interior mirror with automatic anti-dazzle
function*
The anti-d

azzle function is activated every
time the ignition is switched on.
When the anti-dazzle function is enabled, the
interior rear vision mirror will darken auto-
matically according to the amount of light it
receives. The anti-dazzle function is cancel-
led if reverse gear is engaged. Note
● The autom atic

anti-dazzle function will only
work properly if the sun blind* for the rear
window is retracted and there are no other
objects preventing light from reaching the in-
terior rear vision mirror.
● If you have to stick any type of sticker on
the winds
creen, do not do so in front of the
sensors. Doing so could prevent the anti-daz-
zle function from working well or even from
working at all. Folding in the exterior mirrors man-
ua
l
ly The exterior mirrors of the vehicle may be fol-
ded in. F
or thi
s, pr

ess the mirror housing to-
wards the vehicle.
144

Operation
● Adju s
t
the vents so that the air flow is di-
rected slightly upwards.
Change between degrees Centigrade and de-
grees Fahrenheit
Keep the  and  buttons held down for 2
seconds at the same time. The data is dis-
played on the screen in the units required.
Automatic mode
Automatic mode is used to maintain a con-
stant temperature and demist the windows
inside the vehicle.
● Set the interior temperature between +16°C
(+64°F) and +29°C (+84°F).
● Adjus

t the vents so that the air flow is di-
rected s
lightly upwards.
● Press the  butt
on, AUTO is displayed on
the screen.
Automatic mode is switched off by pressing
the air distribution buttons or increasing or
decreasing the blower speed. However, the
temperature remains regulated.
Adjusting the temperature
● When you switch on the ignition, control 1›››
Fig. 172 can be u sed t
o set the required in-
terior temperature.
It is possible to select interior temperatures
from +16°C (+64°F) to +29°C (+84°F). In this range the temperature is regulated automati-
cal
ly

. If a temperature below +16°C (+64°F) is
selected, “LO” is displayed on the screen. If a
temperature above +29°C (+84°F) is selected,
“HI” is displayed on the screen. At both ex-
tremes, Climatronic works at maximum cool-
ing or heating power, respectively. The tem-
perature is not regulated.
In the event of prolonged, irregular distribu-
tion of the air flow from the outlets (particu-
larly the footwells) and significant differen-
ces in temperature, e.g. on leaving the vehi-
cle, sensitive people may catch cold.
Fan regulation
Climatronic automatically regulates blower
speed according to the interior temperature.
It is possible, however, to set the blower
speed to suit requirements.
● Press the 2 buttons to increase or reduce
f an s
peed.
C

limatronic will switch off when the blower
switches off.
Turn on windscreen defrost
● Press the button  ›››
Fig. 172.
Switching off windscreen defrosting
● Press the  button sev
eral times or
press the  button. The temperature is regulated automatically.
The air output fr

om the vents ››› Fig. 169 2 is increased.
WARNING
Read and observe the safety warnings ›››
in
Genera l
notes on page 158. Note
● A v i

sit to the specialised service once a
year is recommended to clean the Climatronic
system.
● The interior temperature sensor is at the
bottom. Do not c
over it with stickers or the
like, as this could have a negative effect on
Climatronic operations. 166

Operation
Opening the driver's door when ex
itin g the
vehicle activates the electronic lock on the
steering column if the ignition is disabled.
Switching the ignition on/off manually
Briefly push the starter button without touch-
ing the brake or clutch pedal ››› .
F or
v

ehicles with both manual and automatic
transmission, the starter button text START ENGINE STOP flashes like a heartbeat
when the sy s
t

em is preset for switching the
ignition on and off.
Automatic ignition switch-off
If the driver leaves the vehicle, taking the ve-
hicle key with them but leaving the ignition
on, the ignition is not switched off automati-
cally. The ignition is switched off automati-
cally by pressing the lock button on the re-
mote control  or manually by pressing the
sensor surface on the door lever ››› Fig. 141
Emergency starting function
If no valid key is detected inside the vehicle,
an emergency start-up will be required. The
relevant message will appear in the dash
panel display. This may happen when, for ex-
ample, the battery of the vehicle key button
is very low or flat:
● Immediately after pushing the starter but-
ton, k eep the

vehicle key next to the right trim of the steering column
›››
Fig. 175, as
close as possible to the Kessy logo.
● The ignition connects and the engine starts
automatic
ally.
Emergency disconnection
If the engine does not switch off after briefly
pressing the starter button, an emergency
disconnect will be required:
● Press the starter button twice within 3 sec-
onds or pr
ess it once for more than 1 sec-
ond ››› .
● The engine turns off automatically.
En gine r
e

start feature
If no valid key is detected inside the vehicle
after the engine stops, you will only have 5
seconds to restart it. A warning will display
on the dash panel screen.
After this interval, it will not be possible to
start the engine without a valid key inside
the vehicle.
Automatic deactivation of the ignition on ve-
hicles with the Start-Stop system
The ignition is switched off automatically
when the vehicle is stopped and the auto-
matic engine shutdown is active, if:
● The driver's seat belt is not fastened,
● the driver does not step on any pedal, ●
the driver door is
opened.
After automatically turning off the ignition, if
the dipped beam  is on, the side light re-
mains on for approx. 30 minutes (if the bat-
tery is sufficiently charged). If the driver locks
the vehicle or manually turns off the light, the
side light goes out. WARNING
Any accidental movement of the vehicle could
re s

ult in serious injury.
● When switching on the ignition, do not
pre
ss the brake or clutch pedal, otherwise
the engine could start immediately. WARNING
If vehicle keys are used negligently or with-
out due c ar

e, this may cause accidents and
serious injury.
● Never leave any key inside the vehicle
when exitin
g. Otherwise, a child or unauthor-
ised person could lock the vehicle, start the
engine or connect the ignition and, in this
way, operate electronic equipment (e.g. the
windows). Note
● Bef or

e leaving the vehicle, always discon-
nect the ignition manually and, if appropri-
ate, take into account the instructions on the
screen of the dash panel. 172

Driving
and tyres) may affect the operation of the
ABS and ASR.
Connecting/disconnecting ESC and
ASR*
The ESC is switched on automatically when
the engine i
s
started, and only works when
the engine is running and includes the ABS,
EDS and ASR systems.
The ASR and ESC function should only be
switched off in situations in which traction is
insufficient, among others:
● When driving in deep snow or on surfaces
that ar

e not very firm.
● To “free” the vehicle if it gets stuck.
Then switc
h the ASR and ESC function back
on.
Depending on finishes and versions, it is
possible either to disconnect only the ASR or
else activate ESC Sport mode.
ESC in “Sport” mode
Sport mode can be connected via the Easy
Connect ››› page 118 system menu. The ESC
and the traction control system (ASR) have
only a limited ability to stabilise the vehicle.
The control lamp  lights up. For vehicles
with a driver information system*, the driver will be shown the
electronic stability
control (ESC) option: sport.
Warning! Limited stability.
Disab

le ESC “Sport” mode
Through the Easy Connect system menu
››› page 118. The warning lamp  will switch
off. For vehicles with a driver information sys-
tem*, the driver will be shown the elec-
tronic stability control (ESC)
option: on.
Disable ASR
The Easy Connect system menu is used to
switch off the ASR ››› page 118. The traction
control system will be disabled.
The control lamp  lights up. For vehicles
with a driver information system* the driver
will be informed that ASR is disabled.
Activate ASR
The Easy Connect system menu ››› page 118
is used to switch on the ASR. The traction
control system will be enabled.
The control lamp  switches off. For vehicles
with a driver information system* the driver
will be informed that ASR is enabled.
● Activate or deactivate the ASR or ESC func-
tion in the Easy
Connect system by means of
the  button and the
S
ET
TINGS and
E SC


System function buttons. WARNING
You should switch on the ESC Sport mode on-
ly if the tr

affic conditions and your driving
ability allow you to do so safely: risk of skid-
ding!
● With ESC in Sport mode, the stabilising
function w
ill be limited to allow for a sportier
drive. The driving wheels could spin and the
vehicle could skid. Note
If the ASR is disconnected or the ESC’s Sport
mode is sel

ected, cruise control* will be
switched off. Electronic differential lock (EDS)*
The EDL operates along with the ABS in vehi-
c
l
e

s equipped with Electronic Stability Con-
trol (ESC)*.
EDL helps the vehicle to start moving, accel-
erate and climb a gradient in slippery condi-
tions where this may otherwise be difficult or
even impossible.
It uses the ABS sensors to monitor the speed
of the driven wheels.
At speeds of up to approximately 80 km/h
(50 mph), it is able to balance out differences
in the speed of the driven wheels of approxi-
mately 100 rpm/min caused by a partially
slippery road surface. It does this by braking »
179
Technical data
Advice
Operation
Emergencies
Safety

Driving
a deliberate warning to the driver that one or
mor e of
the wheel
s is tending to lock and the
ABS control function has intervened. In this
situation it is important to keep the brake
pedal fully depressed so the ABS can regu-
late the brake application. Do not “pump”.
If you brake hard on a slippery road surface,
the best possible control is retained as the
wheels do not lock.
However, ABS will not necessarily guarantee
shorter braking distances in all conditions.
Braking distance could even be further if you
brake on gravel or on fresh snow on a slip-
pery surface.
Control lamp
The control lamp  lights up for a few sec-
onds when the ignition is switched on. It
goes out again after the system has run
through an automatic test sequence.
There is a fault in the ABS if:
● The control lamp  does not
light up when
the ignition is switched on.
● The control lamp does not go out again af-
ter a few sec
onds.
● The control lamp lights up when the vehicle
is mo
ving.
The vehicle can still be braked in the normal
way, without the ABS function. Take the vehi- cle to a specialised workshop as soon as
poss

ible.
If there is a fault in the ABS, the ESC* and the
tyre pressure control lamp will also light up.
Brake system fault
If the ABS warning lamp  lights up together
with the brake warning lamp , there is a
fault in the ABS function and in the brake
system ››› .
WARNING
● The anti-lock br

ake system cannot defy the
laws of physics. Slippery and wet roads are
dangerous even with ABS! If you notice that
the ABS is working (to counteract locked
wheels under braking), you should reduce
speed immediately to suit the road and traffic
conditions. Do not let the extra safety fea-
tures tempt you into taking any risks when
driving.
● The effectiveness of ABS is also determined
by the ty
res fitted ››› page 278.
● If the running gear or brake system is modi-
fied, the effectivene
ss of the ABS could be se-
verely limited. WARNING
● Bef or

e opening the bonnet, read and ob-
serve the warnings ››› page 267, Working in
the engine compartment. ●
If the br ak

e system warning lamp  should
light up together with the ABS warning lamp
 , stop the vehicle immediately and check
the brake fluid level in the reservoir
››› page 275, Brake fluid. If the brake fluid
level has dropped below the “MIN” mark you
must not drive on. Risk of accident. Obtain
technical assistance.
● If the brake fluid level is correct, the fault in
the brake sy
stem may have been caused by a
failure of the ABS system. This could cause
the rear wheels to lock quickly when you
brake. This could cause the rear to break
away. Risk of skidding. Stop the vehicle and
seek technical assistance. Electronic differential lock (XDS)*
When taking a curve, the driveshaft differen-
ti
al
mec

hanism allows the outer wheel to turn
at a higher speed than the inner wheel. In
this way, the wheel that is turning faster (out-
er wheel) receives less drive torque than the
inner wheel. This may mean that in certain
situations the torque delivered to the inner
wheel is too high, causing the wheels to
spin. On the other hand, the outer wheel is
receiving a lower drive torque than it could
transmit. This causes an overall loss of lateral
grip on the front axle, resulting in understeer
or “lengthening” of the trajectory.
The XDS system can detect and correct this
effect via the sensors and signals of the ESC. »
181
Technical data
Advice
Operation
Emergencies
Safety