wheel Seat Alhambra 2016 Workshop Manual
[x] Cancel search | Manufacturer: SEAT, Model Year: 2016, Model line: Alhambra, Model: Seat Alhambra 2016Pages: 324, PDF Size: 5.93 MB
Page 195 of 324

Driving
WARNING
The components of the exhaust system reach
ver y
high temperatures. This could cause a
fire and considerable damage.
● Always park your vehicle so that no part of
the exhau
st system can come in contact with
flammable materials (such as wood,
leaves,dried grass, or spilled fuel). CAUTION
● Spec i
al care should be taken when parking
in areas with high kerbs or fixed barriers. Ob-
jects protruding from the ground may dam-
age the bumper or other parts of the vehicle
during manoeuvres. To avoid damage, stop
before the wheels touch the barrier or kerb.
● Special attention is required when driving
through entranc
es, over ramps, kerbs or oth-
er objects. The vehicle underbody, bumpers,
mudguards and running gear, and the engine
and exhaust system could be damaged as
you drive over these objects. Information on the brakes
For the first 200 to 300 km (100 to 200
mi
l
e
s), new brake pads have not yet reached
their maximum braking capacity, and need to
be “run in” first ››› . The slightly reduced
br ak in
g effect can be compensated for by in-
creasing pressure on the brake pedal. While
running in, the full braking distance or emer- gency braking distance is larger
then when
the brake p
ads have been run in. While run-
ning in, avoid full power braking or situations
requiring braking performance. For example,
in heavy traffic.
The rate of wear of the brake pads depends
to a great extent on the conditions in which
the vehicle is used and the way the vehicle is
driven. If the vehicle is used frequently in city
traffic or for short trips or driven sport style,
visit a specialised workshop regularly, more
frequently than advised in the Maintenance
Programme, to have the brake pads checked.
If you drive with wet brakes, for example, af-
ter crossing areas of water, in heavy rainfall
or even after washing the car, the effect of
the brakes is lessened as the brake discs are
wet or even frozen (in winter). At higher
speed, “dry” the brakes as quickly as possi-
ble by braking gently several times. Only do
this without endangering vehicles behind
you or any other road users ››› .
A l a
y
er of salt on the discs and brake pads
will reduce the effectiveness of the brakes
and increase braking distance. If you drive for
a prolonged period on salted roads without
braking then brake carefully several times to
eliminate the layer of salt on the brakes ››› .
If the
v
ehicle remains parked for considera-
ble lengths of time, is used little, or if the
brakes are not used, there may be corrosion
on the brake discs and a build up of dirt onthe brake pads. If the brakes are not used fre-
quently, or if ru
st has formed on the discs,
SEAT recommends cleaning the pads and
discs by braking firmly a few times at a mod-
erately high speed. Only do this without en-
dangering vehicles behind you or any other
road users ››› .
F au
lt
s in the brake system
During braking, if you notice that the vehicle
does not react as usual (that the braking dis-
tance has increased suddenly) it may be pos-
sible that there is a fault in the braking sys-
tem. The warning lamp lights up and a
text message displayed. Take the vehicle to a
specialised workshop immediately and have
the fault repaired. Drive at a moderate speed
and be prepared to use more pressure on the
brake pedal, and allow for longer stopping
distances.
Brake servo
The brake servo only operates when the en-
gine is running and the pressure applied by
the driver on the brake pedal increases.
If the brake servo does not operate or the ve-
hicle must be towed, then the brake pedal
will have to be pressed with more force given
that the braking distance will be increased
when the brake servo does not operate ››› .
»
193Technical data
Advice
Operation
Emergencies
Safety
Page 196 of 324

Operation
WARNING
New brake pads do not brake to full efficien-
cy.
● For the fir
st 320 km (200 miles), new brake
pad
s have not yet reached their maximum
braking capacity, and need to be “run in”
first. For this, to compensate for reduced
braking efficiency the brake pedal will have
to be pressed with more force.
● To avoid losing control of the vehicle and
caus
ing serious accidents, always take great
care when driving with new brake pads.
● When running in new brake pads, always
res
pect the safety distances between you and
other vehicles and do not cause situations re-
quiring extreme braking performance. WARNING
When brakes overheat, braking is less effi-
cient and br
aking distances increase.
● When driving on slopes, brakes can be
overlo
aded and overheat quickly.
● Reduce speed or change down a gear when
faced w
ith steep and long slopes. This allows
you to use the engine braking effect and to
reduce the strain on the brake system.
● Non-standard or damaged front spoilers
coul
d restrict the airflow to the brakes and
cause them to overheat. WARNING
Wet, frozen or salt-covered brakes take lon-
ger t o en
gage and this increases braking dis-
tances.
● Test the brakes carefully.
● Dry the brakes, free them of ice and salt by
brakin
g gently several times, when weather,
road and traffic conditions permit. WARNING
Driving without the brake servo may signifi-
cantly inc
rease the braking distance and re-
sult in a severe accident.
● Never allow the vehicle to move forwards
when the engine is
switched off.
● If the brake servo does not operate or the
vehicl
e must be towed, then the brake pedal
will have to be pressed with more force given
that the braking distance will be increased
when the brake servo does not operate. CAUTION
● Never m ak
e the brakes “slip” by pressing
the pedal gently, if it is not really necessary
to brake. Continuously pressing on the brake
pedal will heat the brakes. This could signifi-
cantly reduce braking power, increase brak-
ing distance or even result in the total failure
of the brake system.
● Reduce speed or change down a gear when
faced w
ith steep and long slopes. This allows
you to use the engine braking effect and to reduce the strain on the brake system. Other-
wi
se, the br
akes may overheat and fail. Only
use the brakes to reduce speed or to stop. Note
When checking the front brake pads, take the
time t o al
so check the rear brake pads. The
thickness of the brake pads should be
checked visually and regularly, by looking
through the openings in the wheel rims or
from underneath the vehicle. If necessary, re-
move the wheels to check them thoroughly.
SEAT recommends taking your car in for tech-
nical service. Gearbox
Intr oduction When reverse gear is engaged and the igni-
tion i
s
sw
itched on the following takes place:
● Reverse lights light up.
● When reversing, the air conditioner auto-
matical
ly changes to air recirculation mode.
● The rear window heater switches on when
the winds
creen wiper is activated.
● Also, the parking sensor system, the opti-
cal p
arking sensor and the camera for the re-
verse assist system are connected.
194
Page 198 of 324

Operation
Automatic gear change* Fig. 203
Automatic gearbox selector lever
w ith loc
k
ing button (arrow) Read the additional information carefully
› ›
›
page 34
The selector lever has a lock. When changing
the selector lever from position P to a range
of gears, press the brake pedal and press the
lock on the selector lever, located on the
front part of the knob, in the direction of the
arrow ››› Fig. 203. To move the gear selector
lever from the position N to D or to R, first
press and hold the brake pedal.
When the ignition is on, the current position
of the selector lever is shown on the instru-
ment panel.
- Parking lock
The driven wheels are mechanically locked. Only change gears when the vehicle is
at a
st
andstill. To change the position of the se-
lector lever, press the brake pedal and switch
on the ignition.
- Reverse gear
Reverse gear is engaged.
Only put in reverse when the vehicle is at a
standstill. If not it could result in serious
damage.
- Neutral
The gear box is in neutral. No movement is
transmitted to the wheels and the engine
does not act as a brake.
- Standard forwards driving position (nor-
mal programme)
The gears are changed (up and down) auto-
matically. The gear shifts are determined by
the engine load, your individual driving style
and the speed of the vehicle.
- Standard forwards driving position
(sports programme)
The shift up to a higher gear is automatically
delayed and the shift down is faster with re-
spect to the D range of gears, to take full ad-
vantage of the engine power. The gear shifts
are determined by the engine load, your indi-
vidual driving style and the speed of the ve-
hicle. Selector lever locking
The gear sel
ector lever lock prevents, in P or
N, a gear selection from being inadvertently
engaged and the vehicle moving off acciden-
tally.
To release the gear selector lever lock, press
and hold the brake pedal with the ignition
on. Press simultaneously on the selector lev-
er lock.
The selector lever lock is not engaged if it is
moved quickly through position N (e.g. when
shifting from R to D). This makes it possible,
for instance, to “rock the vehicle backwards
and forwards” if it is stuck in snow or mud.
The selector lever lock engages automatically
if the brake pedal is not pressed and the lev-
er is in position N for more than about one
second at a speed of less than 5 km/h
(3 mph).
In vehicles with a DSG ®
automatic gearbox,
on rare occasions the selector lever lock may
not engage. In this case, the transmission is
locked to prevent the vehicle from moving ac-
cidentally. The green control light flashes
and an information text is displayed. Proceed
as follows to engage the selector lever lock:
● Press the brake pedal and then release.
196
Page 199 of 324

Driving
WARNING
Placing the selector lever in an incorrect posi-
tion ma y
cause loss of control of the vehicle
and a serious accident.
● Do not press the accelerator when engag-
ing a ran
ge of gears.
● With the engine running and a range of
gear
s selected, the vehicle will move off
when the brake pedal is released.
● Never select reverse gear or the parking
lock whi
le driving. WARNING
Unintentional movements of the vehicle
cou l
d cause serious injury.
● As a driver, you should never leave your ve-
hicle if
the engine is running and a gear range
is engaged. If you have to leave your vehicle
while the engine is running, you must apply
the electronic parking brake and engage
parking lock P with the selector lever.
● While the engine is running and with the D,
S or R rang
e of gears selected, keep the brake
pressed to keep the vehicle at a standstill.
Transmission is not totally interrupted either
when the vehicle is idling or when the vehicle
“continues moving forwards”.
● Never engage the R or P gear ranges when
the vehic
le is moving.
● Never leave the vehicle with the gear selec-
tor in N. The
vehicle may move downhill re-
gardless of whether the engine is switched
on or not. CAUTION
If, when the vehicle is at a standstill, the
electr onic
parking brake is not applied and
the brake pedal is released while in position
P, the vehicle may move a few centimetres
forwards or backwards. Note
If, while driving, the selector lever is acciden-
ta l
ly placed in position N, lift your foot off the
accelerator. Wait until the engine is running
at idle speed before selecting a new gear
range. Gear change with Tiptronic*
Fig. 204
Selector lever in Tiptronic position
(l ef t
-hand drive vehicles). The lay-out in right-
hand drive vehicles is symmetrically op-
posed. Fig. 205
Steering wheel with two paddle
shifts f
or Tiptronic The Tiptronic system allows you to manually
c
h
an
ge gears in vehicles with an automatic
gearbox. When you change to the Tiptronic
programme, the vehicle remains in the cur-
rently selected gear. This is possible as long
as the system is not changing gear automati-
cally due to a traffic situation.
Using Tiptronic with the selector lever
● Press the selector lever from position D to
the right int
o the Tiptronic selector gate ››› in Automatic gear change* on page 197.
●
Press the lever forwards + or backwards
– to move up or down a gear
››
›
Fig. 204.
Using the Tiptronic with the steering wheel
paddle shifts
● In D or S, move the s
teering wheel paddle
shifts ››› Fig. 205. »
197
Technical data
Advice
Operation
Emergencies
Safety
Page 200 of 324

Operation
● Pu
l
l the right-hand side paddle +›››
Fig. 205 t o
w ards the steering wheel to
step up a gear.
● Pull the left-hand side paddle –
› ››
Fig. 205
t o
wards the steering wheel step down a gear.
If the paddles are not used for a period of
time, the vehicle leaves Tiptronic mode. CAUTION
● When acc el
erating, the gearbox automati-
cally shifts up into the next gear shortly be-
fore the maximum engine speed is reached.
● When reducing speed manually, the gear
box on
ly shifts gear when the engine can no
longer exceed the maximum engine speed. Driving with automatic gearbox
The gearbox changes gear ratios automatical-
ly
a
s
the vehicle moves.
Driving down hills
The steeper the gradient, the lower the gear
you will need. The lowest gears increase the
engine braking work. Never go down hills
with the selector lever in neutral N.
● You should reduce speed accordingly.
● Press the selector lever from position D to
the right int
o the Tiptronic selector gate
››› page 197. ●
Gently p u
ll the selector lever back to
change down a gear.
● OR: reduce using the steering wheel pad-
dle
s ››› Fig. 205 ››› page 197.
Back-up mode
If all the selector lever positions on the in-
strument panel display are shown with a
light-coloured background, this means there
is a fault in the system. The automatic gear-
box will operate in back-up mode. When the
backup programme is activated, it is possible
to drive the vehicle, however, at low speeds
and within a selected range of gears.
For the DSG ®
dual clutch gearbox, in some
cases, this may mean that the reverse gear
does not engage . The gearbox should be
checked by a specialised workshop as soon
as possible.
Protection against overloading the DSG ®
6-
gear automatic gearbox
When the clutch is overloaded, the vehicle
begins to jerk and the selector lever position
indicator begins to flash. To prevent damage
to the clutch, this interrupts the power trans-
mission between the engine and the gear-
box. There is no more traction and it is not
possible to accelerate. If the clutch is opened
automatically due to overloading, press the
brake pedal. Wait a few seconds before start-
ing to move again. Kick-down
The kick
-down system provides maximum ac-
celeration when the gear selector lever is in
the positions D, S or in the Tiptronic position.
When the accelerator pedal is pressed right
down, the automatic gearbox will shift down
to a lower gear, depending on road speed
and engine speed. This takes advantage of
the maximum acceleration of the vehicle
››› .
When the ac c
el
erator is pressed to the floor,
the automatic gearbox shifts to the next gear
only after the engine reaches the specified
maximum engine speed.
Launch-Control Programme
The Launch-Control programme enables max-
imum acceleration while at a standstill.
● Switch off the ASR ›››
page 189.
● Press and hold the brake pedal with your
left
foot.
● Place the selector lever in position S or Tip-
tronic
.
● Press the accelerator with the right foot un-
til the
vehicle reaches an engine speed of ap-
proximately 3200 rpm.
● Lift the left foot off the brake ›››
. The ve-
hic l
e s
tarts with maximum acceleration.
● Turn on the ASR after accelerating!
198
Page 201 of 324

Driving
WARNING
Rapid acceleration can cause loss of traction
and skid din
g, especially on slippery ground.
This could cause loss of control of the vehicle
resulting in an accident and considerable
damage.
● Only use kick-down and rapid acceleration
when weather c
onditions, surface conditions
and traffic conditions permit; accelerate and
drive in a manner that does not endanger
other road users.
● Please remember that the driven wheels
can slip and the
vehicle can skid if the ASR is
turned off, especially on slippery ground.
● Turn on the ASR after accelerating! CAUTION
● If y
ou stop on a hill with a gear range en-
gaged, do not try to prevent the vehicle from
rolling back by pressing on the accelerator.
This could cause overheating and damage the
automatic gearbox.
● Never allow the vehicle to move with the
gear sel
ector lever in N, especially with the
engine turned off. The automatic gearbox will
not be lubricated and could be damaged. Recommended gear display
In some vehicles, the recommended gear for
r
educ
in
g fuel consumption is displayed on
the instrument panel:
DisplayMeaning
Optimum gear.
Recommendation to change up a gear.
Recommendation to change down a
gear.
Information for “cleaning” the diesel partic-
ul
at
e filter
The exhaust gas system control recognises
when the diesel particulate filter is blocked,
and helps to clean it by recommending a spe-
cific gear for driving. It may therefore be nec-
essary to drive with the engine at an excep-
tionally high speed ›››
page 202. WARNING
The recommended gear display is intended as
a guideline only; it shou
ld never replace the
driver's attention to driving carefully.
● Responsibility for selecting the correct gear
for eac
h situation continues to lie with the
driver, for example when overtaking, climb-
ing a hill or towing a trailer. For the sake of the environment
Selecting the most appropriate gear for the
sit uation w
ill help you to save fuel. Note
The recommended gear display is switched
off when the c lut
ch pedal is pressed. Run-in and economical driving
Ru nnin
g in Please observe the instructions for running-in
new components.
R u
nning-in the engine
The engine needs to be run-in over the first
1500 km (1000 miles). During its first few
hours of running, the internal friction in the
engine is greater than later on when all the
moving parts have bedded down.
How the vehicle is driven for the first
1500 km (1000 miles) influences the future
engine performance. Throughout the life of
the vehicle, it should be driven at a moderate
speed – especially when the engine is cold –
this will reduce engine wear and increase its
useful life. Never drive at extremely low en-
gine speeds. Always engage a lower gear
when the engine works “irregularly”. For the
first 1000 km or 600 miles, please note:
● Do not use full throttle.
● Do not force the engine above two thirds of
its m ax
imum speed. »
199
Technical data
Advice
Operation
Emergencies
Safety
Page 202 of 324

Operation
● Do not t
o
w a trailer.
Between 1000 and 1500 kilometres (600 to
1000 miles), gradually increase power until
reaching the maximum speed and high en-
gine speeds.
Running in new tyres and brake pads ● Replacement of wheel rims and new tyres
›››
page 288
● Notes on the brakes ›››
page 193 For the sake of the environment
If the engine is run in gently, the life of the
engine w i
ll be increased and the engine oil
consumption reduced. Environmental compatibility
Environmental protection is a top priority in
the de
s
ign, c
hoice of materials and manufac-
ture of your new SEAT.
Constructive measures to encourage recy-
cling
● Joints and connections designed for easy
dismantlin
g
● Modular construction to facilitate disman-
tling
● Incr
eased use of single-grade materials. ●
Plas
tic parts and elastomers are marked in
accordance with ISO 1043, ISO 11469 and
ISO 1629.
Choice of materials
● Use of recycled materials.
● Use of compatible plastics in the same part
if its c
omponents are not easily separated.
● Use of recycled materials and/or materials
originating fr
om renewable sources.
● Reduction of volatile components, includ-
ing odour, in p
lastic materials.
● Use of CFC-free coolants.
Ban on heavy
metals, with the exceptions
dictated by law (Annex II of ELV Directive
2000/53/EC): cadmium, lead, mercury, hexa-
valent chromium.
Manufacturing methods
● Reduction of the quantity of thinner in the
protectiv
e wax for cavities.
● Use of plastic film as protection during ve-
hicle tr
ansport.
● Use of solvent-free adhesives.
● Use of CFC-free coolants in cooling sys-
tems.
● Recy
cling and energy recovery from resi-
dues (RDF).
● Impr
ovement in the quality of waste water. ●
Use of sy
stems for the recovery of residual
heat (thermal recovery, enthalpy wheels,
etc.).
● The use of water-soluble paints.
Economical and environmentally
friendly drivin
g Fuel consumption, environmental impact and
engine, br
ak
e and tyre wear depend largely
on three factors:
● Personal driving style.
● Conditions of use (weather, road surface).
● Technical requirements.
Savin g
s of up to 25% in fuel consumption
are possible with an appropriate driving style
and the adoption of certain simple tips.
Changing gear early
General instructions: The highest gear is al-
ways the most economical. As a guideline,
for the majority of vehicles: at a speed of
30 km/h (19 mph), drive in third gear, at
40 km/h (25 mph) in fourth gear and at
50 km/h (31 mph) in fifth gear.
In addition, “skipping” gears when shifting
up helps to save fuel, weather and traffic
conditions permitting.
200
Page 207 of 324

Driver assistance systems
● Do not s
t
op in the water, use reverse gear
or switch off the engine.
● Oncoming traffic will cause waves which
raise the l
evel of the water, making it difficult
to cross the water.
The Start/Stop system must be deactivated
when driving through flooded areas WARNING
When driving through water, mud, melted
sno w
, etc., please remember that due to
damp or frozen brake discs and shoes in win-
ter, the braking effect may be delayed, there-
fore the required braking distance is greater.
● “Dry the brakes and remove ice” by braking
caref
ully. Ensure that you are not endanger-
ing other road-users or breaking traffic regu-
lations in the process.
● After driving through water, avoid sudden
sharp manoeu
vres. CAUTION
● Drivin g thr
ough flooded areas may severely
damage vehicle components such as the en-
gine, transmission, drive train or electrical
system.
● Never drive through salt water as salt cau-
ses c
orrosion. Always rinse any parts of the
vehicle which have been in contact with salt
water. 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. 206 when traction is
insufficient. Always remember to turn on the
ASR once more when the vehicle has traction
again. »
205
Technical data
Advice
Operation
Emergencies
Safety
Page 208 of 324

Operation
Anti-lock system (ABS)
ABS c
an 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 front wheels are turned, the normal ABS is
activated.
Br
ake assist system (BAS)
The brake assist system may reduce the re-
quired braking distance. The brake assist
system boosts the braking force if you press
the brake pedal quickly in an emergency. As
a result, the braking pressure increases rap-
idly, the braking force is multiplied and the
braking distance is reduced. This enables the
ABS to be activated more quickly and effec-
tively.
Do not lift your foot off the brake pedal!
When the brake pedal is released or when
the brake force is reduced, braking assist au-
tomatically turns off the brake servo.
Traction control when accelerating (ASR)
In the event of wheelspin, the traction control
system reduces the engine torque to match
the amount of grip available. The ASR makes
some situations easier, for example, when
starting, accelerating or going uphill, even in
unfavourable road conditions.
The ASR can be switched on or off manually
››› page 207.
Electronic differential lock system (EDS)
EDL is available when driving in straight lines
under normal conditions. When the EDL de-
tects wheelspin, it brakes the spinning wheel and directs the power to the other drive
wheels. T
o prevent the disc brake of the
braked wheel from overheating, the EDL cuts
out automatically if subjected to excessive
loads. The EDL will switch on again automati-
cally when the brake has cooled down.
Electronic drive torque management (XDS)
When taking a curve, the driveshaft differen-
tial mechanism 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.
Via the ESC, the XDS will brake the inside
wheel and counter the excess driving torque
of that wheel. This means that the driver's
desired trajectory is much more precise.
The XDS system works in combination with
the ESC and is always active, even when ASR
traction control is disconnected.
206
Page 209 of 324

Driver assistance systems
WARNING
Driving at high speed on icy, slippery wet
grou nd c
an result in loss of vehicle control
and serious injury to the driver and passen-
gers.
● Adjust your speed and driving style to visi-
bility
, road, traffic and weather conditions.
Even though the brake assist systems, ABS,
BAS, EDL, ASR and ESC, provide more securi-
ty, do not take unnecessary risks while driv-
ing.
● Brake assist systems can not overcome the
law
s of physics. Even with ESC and other sys-
tems, slippery and wet roads will always be
dangerous.
● Driving to quickly on wet ground can result
in the wheels lo
sing contact with the ground
in an effect known as “aquaplaning”. Without
adherence, it is impossible to brake, steer or
control the vehicle.
● Brake assist systems cannot avoid acci-
dents if
, for example, the driver does not re-
spect safety distances or drives to quickly in
difficult conditions.
● Even though brake assist systems are ex-
tremely eff
ective and help control the vehicle
in difficult situations, remember that the ve-
hicle stability depends on tyre grip.
● When accelerating on a slippery surface,
for ex
ample on ice or snow, press the acceler-
ator carefully. The wheels can still slip even
with brake assist systems resulting in loss of
vehicle control. 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 288. 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. 206
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. 206
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. 206
.
207
Technical data
Advice
Operation
Emergencies
Safety