2009 SKODA YETI brake light

Intelligent Technology
163
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Driving TipsIntelligent TechnologyElectronic stability programme (ESP)*GeneralGeneral The ESP aids you in maintaining control of
your vehicle in situations in which the
vehicle is driving at its dynamic limits, such as
entering a curve fast. The risk of skidding
is reduced and your vehicle thus offers greater driving stability depending on the conditions of the road surface. The system operates at all speeds. The following systems are integrated into the electronic stability programme:•
electronic Differential Lock (EDL),
•
traction control system (TCS),
•
active driver-steering recommendation (DSR),
•
antilock brake system (ABS),
•
brake Assist,
•
uphill-Start off-Assist.
The ESP system cannot be switched off, the
TCS system can only be switched off by
pressing the button
⇒fig. 154
, then the ESP warning light flashes slowly
.
Operating principle The ESP switches on automatically when the engine is started and then conducts a self-test. The ESP control unit processes data from the individual systems. It also proc- esses additional measurement data which are supplied by highly sensitive sensors: the rotational velocity of the vehicle about its ve
rtical axis, the lateral acceleration of the
vehicle, the braking pressure and the steering angle. The direction which the driver wishes to take is determined based on the steering angle and the speed of the vehicle and is co
nstantly compared with the actual behav-
iour of the vehicle. If
differences exist, such as the vehi
cle beginning to skid, the ESP will
automatically brake the appropriate wheel. The car is stabilised again by the forces wh
ich take effect when the wheel is braked.
Intervention into the brake system takes place primarily on the outer front wheel of a vehicle which tends to oversteer (tendency for the rear of the vehicle to break away) while occurs this is on the inner rear wh
eel of a vehicle whic
h tends to understeer
(tendency to shift out of the curve). This braking control cycle is accompanied by noises. During an intervention of the system, the warning light
 flashes quickly in the instru-
ment cluster
⇒page 35.
The ESP operates in combination with the ABS
⇒page 167, “Antilock brake system
(ABS)”. If there is a fault in the ABS system, the ESP also does not operate. The ESP warning light lights up in the inst
rument cluster when there is a fault on the
ESP
 ⇒page 35.WARNING
It is also not possible for the ESP to overcome the physical limits of the vehicle. Even if a vehicle fitted with ESP you should still always adapt your style of driving to the condition of the road surfac
e and the traffic situation. This partic-
ularly applies when driving on slippery
and wet roads. The increased safety
Fig. 154 ESP switch
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Intelligent Technology
164
offered must not tempt you to take greater risks than otherwise - risk of an acci- dent!
Note
•
All four wheels must be fitted with the same tyres in order to achieve problem-free
operation of the ESP. Differing rolling circum
ferences of the tyres can lead to an unde-
sirable reduction in the engine output.•
Changes to vehicle (e.g. on engine, on th
e brakes, on chassis or another combina-
tion of tyres and wheels) can influence the function of the ESP
⇒page 221, “Accesso-
ries, changes and replacement of parts”.Electronic Differential Lock (EDL)* The electronic differential lock prev
ents an individual wheel from slip-
ping.Models fitted with ESP ar
e equipped with electronic differential lock (EDL).
General The EDL makes it much easier, and sometimes
at all possible, to start off, accelerate
and climb a steep hill when the conditions of the road surface are unfavourable. Operating principle The EDL is activated automaticall
y, that is without any action
on the part of the driver.
It monitors the speeds of the driven wheels with the aid of the ABS sensors. Should only
one
drive wheel begin spinning on a slippery surface there will be an appreciable
difference in the speed of the driven wheels. The EDL function brakes the slipping wheel and the differential transmits a greate
r driving force to the other driven wheel.
This control process is also accompanied by noises. Overheating of the brakes The EDL switches off automatica
lly if unusually severe stresses exist in order to avoid
excessive heat generation in the disc brake on the wheel which is being braked. The vehicle can continue to be driven and has
the same characteristics as a vehicle not
fitted with EDL.
The EDL switches on again automatically
as soon as the brake has cooled down.
EDL Off-road* After switching on the Off-road mode
⇒page 170, EDL Off-road is activated.
EDL Off-road is matched in such a way that it assists the traction of the vehicle when driving on an unfirm ground. EDL is activated earlier in the Off-road mode than in the normal mode. The brake pres- sure builts up more quickly on the slipping
wheel, on one axle, as well as diagonally.
WARNING
•
Carefully depress the accelerator when
accelerating on uniformly slippery
road surfaces, such as ice and snow. Th
e driven wheels might still spin despite
the EDL and affect the stability of
the vehicle - risk of an accident!
•
You should always adapt your style of driving to the condition of road
surface and to the traffic situation even
when your vehicle is fitted with EDL.
The increased safety offered must not tempt you to take greater risks than otherwise - risk of an accident!
Note
•
If the ABS or ESP warning light comes on, this may also indicate a fault in the EDL.
Please have the vehicle inspected as soon
as possible by a specialist garage.
•
Changes to vehicle (e.g. on engine, on the brakes, on chassis or another combina-
tion of tyres and wheels) can influence the function of the EDL
⇒page 221, “Accesso-
ries, changes and replacement of parts”.
WARNING (continued)
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Intelligent Technology
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Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Traction control system (TCS) The traction control system prevents
the driven wheels from spinning
when accelerating.General The TCS makes it much easier, and sometimes at
all possible, to start off, accelerate and
climb a steep hill when th
e conditions of the road
surface are unfavourable.
Operating principle The TCS switches on automatically when th
e engine is started and then conducts a
self-test. The system monitors the speeds of the driven wheels with the aid of the ABS sensors. If the wheels are spinning, the force transmitted to the road surface is auto- matically adapted by reducing the engine speed. The system operates at all speeds. The TCS operates in combination with the ABS
⇒page 167, “Antilock brake system
(ABS)”. The TCS will not function if a fault exists in the ABS system. The TCS warning light lights up in the instru
ment cluster when there is a fault on the
TCS
 ⇒page 34.
During an intervention of the system, the TCS warning light
 flashes quickly in the
instrument cluster
⇒page 34.
Switching off You can switch the TCS off and on again as yo
u wish. On vehicles fitted with ABS, you
can switch off the TCS by pressing the button
⇒fig. 155
, on vehicles fi
tted with ESP*,
you can switch off the TCS wi
th the aid of the button
⇒page 163, fig. 154
. The TCS
warning light
 flashes slowly in the instrument cluster if the system is switched off
⇒ page 34. The TCS should normally always
be switched on. It may be good practice in certain
exceptional cases, such as when you wish to
have wheel slip, to switch off the system.
Examples:•
when driving with snow chains
•
when driving in deep snow or on a loose surface
•
when it is necessary to rock a vehicle when it has become stuck.
Then you should switch on the TCS again. TCS Off-road* After switching on the Off-road mode
⇒page 170, TCS Off-road is activated.
TCS Off-road provides a more effective a
cceleration of the vehicle on an unfirm
ground, as it allows higher traction be
tween the slipping wheels and the ground.
The system operates when starting off or at low speeds.
WARNING
You should always adjust your style of driving to the conditions of the road surface and the traffic situation. The increased safety offered must not tempt you to take greater risks than otherwise - risk of an accident!
Note
•
All four wheels must be fitted with the same tyres in order to achieve problem-free
operation of the TCS. Differing rolling circumferences of the tyres can lead to an unde- sirable reduction in the engine output.•
Changes to vehicle (e.g. on engine, on the brakes, on chassis or another combina-
tion of tyres and wheels) can influence the function of the TCS
⇒page 221, “Accesso-
ries, changes and replacement of parts”.
Fig. 155 TCS switch
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Active driver-steering recommendation (DSR)*Vehicles with ESP are equipped with active driver-steering recommendation (DSR). This function indicates to the driver in critical situations a steering recommendation in order to stabilise the vehicle. The active driver-steering recommendation is activated, for example, on the right and left vehicle si
de when braking sharply on different road
surfaces.
WARNING
Even with this function the vehicle canno
t steer itself! The dr
iver is furthermore
responsible for the steering of the vehicle!BrakesWhat has a negative effect on braking efficiency?Wear-and-tear Wear-and-tear to the brake pads is greatly dependent on the operating conditions of the vehicle and your style of driving. Particul
arly if you drive a great deal in towns and
over short distances or if you adopt a sporty style of driving, it may be necessary to have the thickness of the brake pads inspected at a specialist garage between the service inspections. Wet roads or road salt There may be a certain delay before the brakes
take full effect under certain conditions
such as when driving through water, during
heavy rain showers or after the vehicle has
been washed in an automatic vehicle wash
, since the brake discs and brake pads may
be moist or even have a coatin
g of ice on them in winter.
Yo u s h o u l d d r y t h e b r a k e s a s
soon as possible by applying and
releasing the brakes several times.
There also may be a certain delay before the full braking efficiency is available when driving on roads which have been treated with
road salt if you have not used the brakes
for some considerable time beforehand. The layer of salt on the brake discs and brake pads must first be rubbed off when you apply the brakes.
Corrosion Corrosion on the brake discs and dirt on th
e bake pads occur if
the vehicle has been
parked for a long period and if you do
not make much use of the braking system.
We recommend cleaning the brake discs by firm
ly applying the brakes at a fairly high
speed if you do not make much use of the braking system or if surface corrosion is present
⇒
.
Faults in the brake surface If you notice that the braking distance has
suddenly become longer and that the brake
pedal can be depressed further, it is possib
le that a brake circuit of the dual-circuit
brake system has failed. Drive, in such cases, to the nearest specialist garage without delay in order to have the problem rectifie
d. Drive at a reduced speed while on your
way to the dealer and adapt your style of
driving to the higher brake pedal pressure
required. Low brake fluid level An insufficient level of brake fluid may result in problems in the brake system. The level of the brake fluid is monitored electronically
⇒page 37, “Brake system
”.
WARNING
•
Only apply the brakes for the purpose of
drying and cleaning the brake discs
if the traffic conditions permit this. Do not place any other road users in jeop-ardy.•
When retrospectively mounting a front
spoiler, solid wheel hubs etc. one
must ensure that the air supply to the front wheel brakes is not reduced other-wise the braking system could run too hot.•
Allow for the fact that new brake pads
do not achieve their full braking effi-
ciency until approximately 200 kilometres. New brake pads must be first “run in” before they develop their optimal fric
tion force. You can, however, compen-
sate for this slightly reduced braking fo
rce by increasing the pressure on the
brake pedal. This guideline also applie
s to any new brake pads installed at a
future date.
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Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Caution
•
Never allow the brakes to rub by applying sl
ight pressure if you do not wish to brake
the vehicle. This causes the br
akes to overheat and can also result in a longer braking
distance and excessive wear.•
Before negotiating a steep downhill section, please reduce your speed, shift down
into the next lower gear (manual gearbox)
or select a lower driving stage (automatic
gearbox). This enables you to make full us
e of the braking power of the vehicle and
reduces the strain on the brakes. Any additional braking should be done intermittently, not continuously.
Note
The brake light flashes automatically in case
of an emergency braking at speeds greater
than 60 km/h or with the intervention of the ABS, which lasts longer than 1.5 seconds. After the speed was reduced below 10 km/h or the vehicle was stopped, the brake light stops flashing and the hazard warning light system switches on. The hazard warning light system is switched off automatically
after accelerating
or driving off again.
Brake boosterThe brake booster boosts the pressure which you generate with the brake pedal. The necessary pressure is only genera
ted when the engine is running.
WARNING
•
Never switch off the engine before the vehicle is stationary.
•
The brake booster only operates when
the engine is running. Greater phys-
ical effort for braking is required when en
gine is switched off. Because if you do
not stop as normal, this can cause an accident and severe injuries.
Antilock brake system (ABS)ABS prevents the wheels locking when braking.General The ABS contributes significantly to enhanc
ing the active safety of your vehicle.
Compared to a vehicle not fitted with the ABS brake system, you are able to retain optimal steering ability even during a full br
ake application on a slippery road surface
because the wheels do not lock up. You must not expect, however, that the br
aking distance will be shorter under all
circumstances as a result of the ABS. The braking distance for example on gravel and fresh snow, when you should anyway be driv
ing slowly and cautiously, will be longer.
Operating principle The brake pressure will be reduced on a wheel which is rotating at a speed which is too low for the speed of the vehicle and tending
to lock. This control
cycle is noticeable
from a
pulsating movement of the brake pedal
which is accomp
anied by noises.
This is consciously intended to provide the driver with the information that the wheels are tending to lock (ABS control range). You must always keep the brake pedal depressed to enable the ABS to optimally control the brake application in this braking range. Never interrupt the application of the brakes! ABS Off-road* After switching on the Off-road mode
⇒page 170, ABS Off-road is activated.
ABS Off-road increases the braking power of
the vehicle on an unfirm ground, as it
keeps the wheels blocked for a longer period
of time when the brake is applied while
sliding. The system is only available, if the front wheels are in the straight-ahead posi-tion. The system operates at speeds of up to 50 km/h.
WARNING
•
The ABS can also not overcome the physical
limits of your ve
hicle. Please do
not forget this, particularly when driving on icy or wet road surfaces. If the ABS is operating within the control range, adapt your speed immediately to the conditions of the road surface and the traffic situation. The increased safety
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offered by the ABS must not tempt you to take greater risks than otherwise - risk of an accident!•
The normal braking system is
still fully functional if there is an ABS fault.
Visit a specialist garage as quickly as poss
ible and adjust your style of driving to
take account of the ABS fault in the meantime since you will not know the extent of the fault and in how far the braking efficiency is affected.
Note
•
A warning light comes on if a fault occurs in the ABS system
 ⇒page 36.
•
Changes to vehicle (e.g. on engine, on th
e brakes, on chassis or another combina-
tion of tyres and wheels) can in
fluence the function of the ABS
⇒page 221, “Accesso-
ries, changes and replacement of parts”.Brake Assist*During a severe brake application (e.g. if a hazard exists), the Brake Assist increases the braking force and thus makes it possible to
rapidly produce the pressure required in
the brake system. The majority of drivers do apply the brakes
in good time in dangerous situations, but
do not depress the brake pedal with sufficient
pressure. Consequently, it is not possible
for the vehicle to achieve its maximum deceleration and the vehicle covers a greater distance than necessary. The Brake Assist is activated by the very quick operation of the brake pedal. In such cases, a much greater braking pressure exists
than during a normal
brake application.
This makes it possible, even with a relative
ly low resistance of the brake pedal, to
produce an adequate pressure in the brake system in the shortest possible time, which is required for maximum deceleration of th
e vehicle. You must apply the brake pedal
firmly and hold it in this position in order to achieve the shortest possible braking distance. The Brake Assist is able to help you achieve a shorter braking distance in emergency situations by rapidly producing the pressure required in the brake system. It fully exploits the attributes of the ABS. After you release the brake pedal, the function of the Brake Assist is automatically switched off
and the brakes operate in the normal way.
The Brake Assist is part of the ESP system. If a fault occurs in the ESP, the Brake Assist function is also not available.
Further information on the ESP
⇒page 163.
WARNING
•
The Brake Assist is also not able to overcome the physical limits of your
vehicle in terms of the braking distance required.•
Adapt your speed to the conditions of th
e road surface and to the traffic situ-
ation.•
The increased safety offered by the Brake Assist must not tempt you to take
a greater safety risk than otherwise.Uphill-Start off-Assist*The uphill-start off-assist makes it much easier to start off on steep hills. The system assists a start off by holding the brake pressure produced by the brake pedal actuation for approx. 2 seconds after releasing the brake pedal. The driver can therefore move his foot from the brake pedal to the accelerator pedal and start off on the slope, without having to actuate the handbrake. The brake pressure drops gradually the more you operate the accelerator pedal. If the vehicle does not start off within 2 seconds, it starts to roll back. The uphill-start off-assist is active in the ev
ent of a 3 % slope, if the vehicle door is
closed. It is always active on slopes when in forward or reverse start off. When driving downhill, it is inactive.Electromechanical power steeringThe power steering enables you to steer the vehicle with less physical force. With the electromechanical power steering, the steering assist is automatically adapted to the speed and to the steering angle. It is still possible to fully steer the vehicle if the power steering fails or if the engine is not running (vehicle being towed in). The only difference is that greater physical effort is required.
WARNING (continued)
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Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
If there is a fault in the power steering, the warning light
 or  lights up in the instru-
ment cluster
⇒page 32.
WARNING
Contact your specialist
garage if the power steering is defective.
Tyre inflation pressu
re-control system*
The tyre inflation pressure-control system compares with the aid of the ABS sensors the speed and also the rolling circumference of the individual wheels. If the rolling circumference of a wheel is changed, the warning light
 lights up in the instrument
cluster
⇒page 35 and an audible signal sounds.
The rolling circumference of the tyre
can change if:•
the tyre inflation pressure is too low,
•
the structure of the tyre is damaged,
•
the vehicle is loaded on one side,
•
the wheels of an axle are loaded heavily (e.g. when towing a trailer or when driving
uphill or downhill),•
snow chains are mounted,
•
the temporary spare wheel is mounted,
•
one wheel per axle was changed.
Basic setting of tyre inflation pressure-control system After changing the tyre inflation pressures or after changing one or several wheels, the position of a wheel on the vehicle (e.g. ex
changing the wheels between the axles) or
when the warning light lights up while drivin
g, a basic setting of the system must be
carried out as follows.•
Inflate all tyres to the specified inflation pressure
⇒page 215.
•
Switch on the ignition.
•
Press button
⇒fig. 156
for more than 2 seconds. While pressing the button,
the warning light
 lights up. At the same time the memory of the system is erased
and the new calibration is started, which is confirmed with an audible signal and then the warning light
 goes out.
•
If the warning light
 does not go out after the basic
setting, there is a fault in the
system. Have the vehicle inspected by your nearest specialist garage. Warning light
 lights up
If the tyre inflation pressure of at least one
wheel is insufficiently inflated in comparison
to the stored basic va
lue, the warning light
 ⇒
lights up.
Warning light
 flashes
If the warning light flashes, there is a system fault. Have the vehicle inspected by your nearest specialist garage.
WARNING
•
When the warning light
 lights up, immediately reduce the speed and
avoid sudden steering and brake manoeuvr
es. Please stop the vehicle without
delay at the nearest possible stop and in
spect the tyres and their inflation pres-
sures.•
The driver is responsible for the correc
t tyre inflation pressures. For this
reason, the tyre inflation pressu
res must be checked regularly.
•
Under certain circumstances (e.g. sporty style of driving, wintry or unpaved
roads) the warning light
 can be delayed or does not light up at all.
•
The tyre inflation pressure-control system does not take away the respon-
sability from the driver for the
correct tyre inflation pressure.
Fig. 156 Button for setting the tyre infla- tion pressure control value
 
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Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
•
TCS Off-road
⇒page 165,
•
ABS Off-road
⇒page 167.
Switch on Off-road The Off-road mode is switched on by pressing the button
⇒page 170, fig. 158
. The
warning light in the button lights up. The wa
rning light lights up in the instrument
cluster if the system is switched on
 ⇒page 38.
Switch off Off-road The Off-road mode is switched off by repe
ated pressing of the button. The warning
light in the button goes out. When switching
off the ignition, the Off-road mode is also
switched off and can be switched on again, if necessary, after switching on the ignition. If the engine is switched off by accident an
d restarted within 30 seconds, the Off-road
mode remains switched on. All four wheels must be fitted with the same tyres in order to achieve proper operation of the Off-road mode. Differing rolling circum
ferences of the tyres can lead to an unde-
sirable reduction in the engine output.
WARNING
•
Always adjust your speed to suit weat
her, road and traffic conditions. The
increased safety must not tempt you to take a greater safety risk than otherwise - risk of accident!•
The Off-road equipment can also not overcome the physical limits of your
vehicle.•
The effect of the Off-road equipm
ent depends as well on the tyres.
•
The Off-road equipment
is not designed for the use on common roads.
Start-Off Assist*The Start-Off Assist enhances the driving comfort and can be used when starting off, in particular on a slope. When the vehicle is stationary, the Start-Off Assist is activated after switching it on using the button for the Off-road mode
⇒page 170, fig. 158
.
Operating principle When depressing the accelerator pedal fully, the engine speed required for the start- up procedure of the stationary vehicle is restricted. The overspeed trip unit is automat-ically deactivated after terminating the start-up procedure. As part of the Assist System, the accelerator pedal is adapted in its characteristics for an easier start-off on slippery and loose soil.Downhill Drive Support*Operating principle The Downhill Drive Support maintains a cons
tant speed on a steep downhill section
when driving forwards and backwards by
automatically intervening in the brake
system of all wheels. It prevents the wheels locking because the ABS remains active. The warning light
 in the information display of the instrument cluster indicates that
the Downhill Drive Support is available
⇒page 38.
The vehicle speed, which is maintained by the Assist System, is selected by the driver while driving on a downhill section as of the
moment the first intervention of the Assist
System is performed or else, while driving on a downhill section, the driver must control the vehicle speed until the Assist System intervenes for the first time. When the Assist System actively intervenes, this is indicated by the warning light flashing or by a pulsating movement of the brake pedal,
similar to the intervention of the ABS.
The Downhill Drive Support is available in the speed range of 2 km/h up to 30 km/h. If the gear is engaged and the clutch pedal is
not pressed, the lower limit of the idling
speed corresponds to the respective gear which is engaged. You can increase or reduce the speed, even when no gear is engaged, by operating the accelerator or brake pedal. Thus the function
is always interrupted and is reactivated
afterwards. The Downhill Drive Support is activated auto
matically if the following conditions are
met:•
the Off-road mode is switched on and the warning light
 lights up in the instru-
ment cluster,•
the engine of the vehicle is running and either the 1st, 2nd, 3rd gear, the reverse
gear or no gear is engaged,•
the speed is less than 30 km/h,
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