brakes SKODA OCTAVIA 2010 2.G / (1Z) Owner's Manual

Contents
4
Safety
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Passive Safety
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic information . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Correct seated position . . . . . . . . . . . . . . . . . . . . . . .
Seat belts
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Why seat belts? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The physical principle of a frontal collision . . . . . .
Important safety information regarding the use of seat
belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How are seat belts correctly fastened? . . . . . . . . . .
Airbag system
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description of the airbag system . . . . . . . . . . . . . . .
Front airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side airbags* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Head airbags* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deactivating an airbag . . . . . . . . . . . . . . . . . . . . . . . .
Transporting children safely
. . . . . . . . . . . . . . . . . .
What you should know about transporting children!
Child seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Attaching a child seat us ing the “ISOFIX” system .
Attaching child seat using the “Top Tether” system
Driving Tips
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intelligent Technology
. . . . . . . . . . . . . . . . . . . . . . . .
Electronic stability programme (ESP)* . . . . . . . . . .
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake booster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Antilock brake system (ABS) . . . . . . . . . . . . . . . . . . .
Brake Assist* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Uphill Start Assist* . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electromechanical power steering . . . . . . . . . . . . .
Tyre pressure monitoring system* . . . . . . . . . . . . . .
Diesel particle filter* (diesel engine) . . . . . . . . . . . .
Driving and the Environment
. . . . . . . . . . . . . . . . .
The first 1 500 kilometres and then afterwards . .
Catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . Driving in an economical and environmentally
conscious manner . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Environmental compatibility . . . . . . . . . . . . . . . . . . .
Motoring abroad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Avoiding damage to your vehicle . . . . . . . . . . . . . . .
Driving through bodies of water on roads . . . . . . .
To w i n g a t r a i l e r
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Towing a trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Maintenance
. . . . . . . . . . . . . . .
Taking care of your ve hicle and cleaning the
vehicle
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Care of the exterior of vehicle . . . . . . . . . . . . . . . . . .
Care of the interior of vehicle . . . . . . . . . . . . . . . . . .
Fuel
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Petrol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Biofuel Ethanol E85* . . . . . . . . . . . . . . . . . . . . . . . . . .
Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspecting and replenishing
. . . . . . . . . . . . . . . . . . .
Engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windshield washer system . . . . . . . . . . . . . . . . . . . . .
Wheels and Tyres
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories, changes and replacement of partsAccessories and replacement parts . . . . . . . . . . . . .
Technical changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicles of category N1 . . . . . . . . . . . . . . . . . . . . . . . .
Breakdown assistance
. . . . . . . . . . . . . .
Breakdown assistance
. . . . . . . . . . . . . . . . . . . . . . . .
First-aid box* and Warning triangle* (Octavia) . .
First-aid box* and warning triangle* (Estate car) .
Fire extinguisher* . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle tool kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tyre repair kit* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spare wheel* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing a wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jump-starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tow-starting and towing vehicle . . . . . . . . . . . . . . .
Fuses and light bulbs
. . . . . . . . . . . . . . . . . . . . . . . . .
Electric fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data
. . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General information . . . . . . . . . . . . . . . . . . . . . . . . . .
Used abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identification details . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel consumption according to the ECE standards and
EU guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine oil specifications . . . . . . . . . . . . . . . . . . . . . . .
1.2 ltr./77 kW TSI - EU5 . . . . . . . . . . . . . . . . . . . . . . . .
1.4 ltr./59 kW - EU4 . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 ltr./90 kW TSI - EU5 . . . . . . . . . . . . . . . . . . . . . . . .
1.6 ltr./75 kW - EU4, EU2 . . . . . . . . . . . . . . . . . . . . . .
1.8 ltr./118 kW TSI - EU5, EU2 DDK (1.8 ltr./112 kW TSI -
EU5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.0 ltr./147 kW TSI - EU5, EU2 DDK . . . . . . . . . . . . .
1.6 ltr./77 kW TDI CR - EU5 . . . . . . . . . . . . . . . . . . . .
1.9 ltr./77 kW TDI PD - EU4, EU3 . . . . . . . . . . . . . . .
2.0 ltr./103 kW TDI CR - EU4, EU5 . . . . . . . . . . . . . .
2.0 ltr./125 kW TDI CR - EU5 . . . . . . . . . . . . . . . . . . .
141141141142145145145146147150150151153155157159159161164165167167167170171171171172172172173175175176
176179180180181182182185185185185189192192192194195196196198200202203207208208214214214214
215215215215215216216217217221222226226229237237237237237237237238239240242244246248250252254256258260
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Instruments and warning lights35
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
For further information on the brake system
page 170, “Brakes”.
Handbrake applied
The warning light
 also comes on if the handbrake is applied. An audible warning is
also given if you drive the vehicle for at least 3 seconds at a speed of more than 6 km/h.
The following text will be displayed in the information display*:
Release parking brake!
WARNING

Pay attention to the following instruct ions before checking the brake fluid
level and opening the bonnet page 197, “Working in the engine compart-
ment”.

If the brake system warning light
 does not go out a few seconds after
switching on the ignition or comes on when driving, stop immediately and
check the brake fluid in the reservoir page 202. If the fluid level has dropped
below the MIN marking, do not drive any further - risk of accident! Obtain
professional assistance.
Alternator

The warning light
 comes on after the ignition has been switched on. It should go
out after the engine has started.
If the warning light does not go out after the engine has started, or comes on when
driving, drive to the nearest specialist garage. The vehicle battery will be discharged in
this case so switch off all non- essential electrical components.
Caution
If the warning light
 comes on when driving and in addition the warning light

(cooling system fault) also comes on in di splay, you must then stop the car immedi-
ately and switch the engine off - risk of engine damage!
Engine oil level

Warning light
 lights up
If the warning light  lights up, the quantity of oil in the engine is probably too low.
Check as soon as possible the oil level or top up page 199, “Replenishing engine oil”
with engine oil.
A peep sounds as an additional warning signal.
The following text will be displayed in the information display*:
Check oil level!
The warning light will go out if the bonnet is left open for more than 30 seconds. If no
engine oil has been replenished, the warning light will come on again after driving
about 100 km.
Warning light
 flashes
A fault on the engine oil level sensor is indicated additionally by an audible signal and
the warning light coming on several times after the ignition has been switched on.
In this case have the engine inspecte d without delay by a specialist garage.
The following text will be displayed in the information display*: Oil sensor. Workshop!
Fuel reserve

The warning light
 comes on, if the fuel level is still below 9 litres.
An audible signal sounds as an additional warning signal.
The following text will be displayed in the information display*: Please refuel! Range...km
Note
The Text in the information display* goes ou t only after refuelling and driving a short
distance.
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Seats and Stowage
74
– With one press, you can switch the heating to highest intensity which is indicated
by the lighting up of the three warning lights in the switch.
– With repeated pressing of the switch, the intensity of the heating is down-regulated up to the switch-off. The intensity of the heating is indicated by the number of illu-
minated warning lights in the switch.
– If you switch the heating to the highest intensity - 3rd stage, it is automatically switched over to the 2nd stage after 10 minutes (two warning lights light up in the
switch).
WARNING
If, as an occupant, you have a subdued pain and/or temp erature sensitivity, e.g.
through medication, paralysis or because of chronic illness (e.g. diabetes), we
recommend not to use the seat heating. Th is can lead to burns on the back, the
posterior and the legs which are difficult to heal. If the seat heating is used, we
recommend to make regular breaks in your journey when driving long
distances, so that in specific cases as mentioned above the body can recuperate
from the stress of the journey. Please consult your doctor, who can evaluate
your specific condition.
Caution

You should not kneel on the seats or otherwise apply pressure at specific points in
order to avoid damaging the heating elements of the seat heaters.

Do not use the seat heating if the seats are not occupied by persons or if objects
are fastened or stored on them, for example a child seat, a bag etc. A fault of the heating
elements in the seat heating can occur.

Do not clean the seats moist page 190.Note

The seat heating should only be switched on when the engine is running. This has
a significant effect of saving on the battery capacity.

If the on-board voltage drops, the seat heating is switched off automatically, in
order to provide sufficient electric al energy for the engine control.
PedalsConcerning a secure depressing of the pedal, you should use only footmats from the
Škoda genuine accessories.
Operation of the pedals must not be hindered!
WARNING

Greater pedal distances may be needed when there is a fault in the brake
system.

Do not place any footmats or other additional floor coverings in the area of
the pedals in order to ensure that all the pedals can be fully depressed and are
able to return unobstructed to their initial position - risk of accident!

There must be no objects on the floor which could roll under the pedals. You
would then no longer be able to apply the brakes, operate the clutch or acceler-
ator - risk of accident!
luggage compartmentLoading the luggage compartmentPlease observe the following in the interest of having good handling characteristics of
your vehicle:
– Distribute the items of luggage as evenly as possible.
– Place heavy objects as far forward as possible.
– Attach the items of luggage to the lashing eyes or the fixing net* page 75.
In the event of an accident, there is such a high kinetic energy which is produced by
small and light objects that they can cause severe injuries. The magnitude of the kinetic
energy depends on the speed at which the vehicle is travelling and on the weight of the
object. The speed at which the vehicle is trave lling is in this case the more significant
factor.
Example: In the event of a frontal collision at a speed of 50 km/h, an unsecured object
with a weight of 4.5 kg produces an en ergy, which corresponds to 20 times its own
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Seats and Stowage
86
Further information page 214, “Accessories, change s and replacement of parts”.Storage compartmentsOverviewYou will find the following storage facilities in your vehicle:
WARNING

Please do not place anything on top of the dash panel. Such objects might
slide or fall down when driving (when accelerating or cornering) and may
distract you from concentrating on the traffic situation - risk of accident!

Ensure that when driving no objects from the centre console of from other
storage possibilities may get into the fo otwell of the driver. You would then no
longer be able to apply the brakes, oper ate the clutch or accelerator - risk of
accident!
Storage compartment on the front passenger sideOpening and closing the storage compartment on the front passenger
side– Press the handle of the lid  fig. 88 - the lid folds down.
– Raise the lid and press it until the catch is heard to engage.
There is a holder for a pen and note book on the inside of the lid.
WARNING

The storage compartment must always be closed when driving for safety
reasons.

Do not place any beverages into the cu p holder while driving. Spilled bever-
ages can damage the electrical system and the upholstery. Hot beverages may
result in burns.
Storage compartment on the front passenger side
 page 86
Storage compartment on the driver's side
page 87
Storage compartment on the dash panel*
page 87
Storage compartment in front centre console*
page 88
Storage compartment for spectacles*
page 88
Storage compartment in the front doors
page 89
Storage compartment below front passenger seat*
page 89
Front seat armrest with storage compartment*
page 89
Rear armrest with storage compartment*
page 90
Storage compartment in rear centre console*
page 90
Seat backrest with opening for skis*
page 91
Through-loading bag*
page 91
Side compartment*
page 92
Storage compartment behind the rear seats* (Combi)
page 92
Clothes hooks*
page 93
WARNING (continued)
Fig. 88 Dash panel: Storage compart-
ment on the front passenger side
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Starting-off and Driving111
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Releasing the handbrake– Pull the handbrake lever up slightly and at the same time press in the locking
button fig. 113 .
– Hold the button pressed and push the handbrake lever down fully .
The handbrake warning light
 lights up when the handbrak e is applied, provided the
ignition is on.
A warning signal sounds and the following text appears in the display* if you have inad-
vertently driven off with the handbrake applied:
Release parking brake!
The handbrake warning is acti vated if you drive at a speed of more than 6 km/h for
more than 3 seconds.
WARNING

Please note that the handbrake must be fully released. A handbrake which
is only partially released can result in the rear brakes overheating which will
have a negative effect on the operation of the brake system - risk of accident! In
addition this can result in premature wear of the rear brake pads.

Never leave children unattended in the vehicle. The children might, for
example, release the handbrake or take the vehicle out of gear. The vehicle
might then move off - risk of accident!Caution
After the car has come to a stop, always firs t of all apply the handbrake firmly before
then additionally engaging a gear (manual gearbox) or moving the selector lever into
position P (automatic gearbox).
Rear parking aid*The parking aid provides a warning of obstacles behind the vehicle.The audible parking aid determines the di stance between the rear bumper and an
obstacle located behind the ve hicle with the aid of ultrasound sensors. The tones of
the parking aid can be adapted in th e menu of the information display* page 25.
The sensors are integrated in the rear bumper.
Range of sensors
The clearance warning begins at a distance of about 160 cm from the obstacle (area
 fig. 114 ). The interval between the warning signals becomes shorter as the clear-
ance is reduced.
A continuous tone sounds from a distance of approx. 30 cm (area ) - danger area.
You should not reverse any further after this signal sounds! If the vehicle is
equipped with a factory-fitted towing device*, the border of the danger area starts -
continuous tone - 5 cm further behind th e vehicle. The vehicle can be extended
through an installed deta chable towing device.
On vehicles equipped with a factory-fitted radio* or navigation system*, the distance
to the obstruction is shown graphically in the display. On vehicles with a factory-fitted
towing device, the sensors are deactivated when towing a trailer. The driver is informed
about this by a graphic display (vehicle towing a trailer) in the radio* or the navigation*
display. The factory-fitted radio* or navigati on system* can be set so that the play func-
tion volume decreases when activating the parking aid, see Owner's Manual radio* or
navigation system*. This improves the audibility of the parking aid.
Fig. 114 Parking aid: Detection range of
rear sensors
AA
AB
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Seat belts147
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
How are seat belts correctly fastened?Fastening three-point seat belts
Fasten your seat belt before starting!Fig. 130 Routing of webbing over the shoulders and the lap belt– Correctly adjust the front seat and the head restraint before fastening your seat belt
 page 70.
– Slowly pull the belt webbing at the tongue of the lock over your chest and pelvis
 .
– Insert the tongue of the lock into the seat belt buckle belonging to the seat until it is heard to lock in place.
– Pull on the belt to check that it has also reliably engaged in the lock.
Each three-point seat belt is equipped with an inertia reel. This inertia reel offers you
complete freedom of movement if the belt is unreeled slowly. If the brakes are applied
suddenly, the inertia reel will block. It also blocks the belts when the car accelerates,
when driving uphill and when cornering.
Expectant mothers must also wear the seat belt .
WARNING

The shoulder part of the seat belt must never run across your neck but must
run approximately over the middle of the shoulder and fit snugly against the
chest. The lap part of the belt must run across the hip and must never be routed across the stomach. It must always fit snugly
fig. 130 - left. Adjust the belt
webbing as required.

The lap part of the belt should be posi tioned as low as possible at the pelvis
of an expectant mother in order to avoid exerting any pressure on the lower
abdomen fig. 130 - right.

Always ensure that the webbing of the seat belts is properly routed. Seat
belts which are not correctl y adjusted can themselves cause injuries even in
minor accidents.

A seat belt which is hanging too loose can result in injuries as your body is
moved forward by the kinetic energy pr oduced in an accident and is then
suddenly held firm by the belt.

Only insert the lock tongue into the lock which is the correct one for your
seat. This will affect the protection which the belt offers and increase the risk of
an injury.
Seat belt height adjusterThe seat belt height adjuster makes it possible for you to adapt the routing of the three-
point seat belt in the area of the shoulder to match your body size.
– Move the height adjuster in the desired direction up or down fig. 131 .
– Then pull firmly on the belt to ensure that the seat belt height adjuster has correctly
locked in place.
WARNING (continued)
Fig. 131 Front seat: Seat belt height
adjuster
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Intelligent Technology
168
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 214, “Accesso-
ries, changes and replacement of parts”.
Electronic Differential Lock (EDL and XDL)*
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.
XDL function (only for Octavia RS)
The XDL function is an extension to the electronic differential lock. The XDL function
does not respond to traction, but to the relief of the inner front wheel during fast
cornering. An active brake intervention on the brake of the inner wheel prevents it from
spinning. Thus, the trac tion is improved and the vehicle continues to follow the desired
track.
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 214, “Accesso-
ries, changes and replacement of parts”.
WARNING (continued)
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Intelligent Technology169
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 171, “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 32.
During an intervention of the system, the TCS warning light
 flashes in the instru-
ment cluster page 32.
Switching off
You can switch the TCS off and on again as you wish by pressing the button fig. 150 .
The TCS warning light lights up in the instru ment cluster when the system is switched
off
  page 32. 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.
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 214, “Accesso-
ries, changes and replacement of parts”.
Active driver-steering recommendation (DSR)*Vehicles with ESP are equipped with active driver-steering recommendation (DSR).
This function indicates to the driver in crit ical 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 cann ot steer itself! The driver is furthermore
responsible for the steering of the vehicle!
Fig. 150 TCS switch
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Intelligent Technology
170
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 an d if you do not make much use of the braking system.
We recommend cleaning the brak e discs by firmly 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 ha s suddenly become longer and that the brake
pedal can be depressed further, it is possible 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 rectified. 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 34, “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.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 th e 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 of f automatically after accelerating or driving off again.
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Intelligent Technology171
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
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 driving 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 accompanied 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!
WARNING

The ABS can also not overcome the physical limits of your vehicle. 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
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 33.

Changes to vehicle (e.g. on engine, on the brakes, on chassis or another combina-
tion of tyres and wheels) can in fluence the function of the ABS page 214, “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 a pply 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 qu ick 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 relatively 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 dece leration of the vehicle. You must apply the brake pedal
firmly and hold it in this position in or der to achieve the shortest possible braking
distance.
s43s.1.book Page 171 Thursday, May 13, 2010 1:21 PM