brake AUDI R8 2007 Owner's Guide

Your vehicle and the environment139
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Sporty drivingLetting the engine warm up and cool downYou can reduce the amount of wear and tear on your vehicle during
a sporty driving session simply by adopting a more restrained
driving style while the engine is warming up and cooling down.
You should allow the engine to warm up by keeping the engine
speed below 7000 rpm until the engine oil reaches at least 90 °C. In
addition, the tyres will not develop their full grip potential until they
have had a chance to warm up on the road.
Even though the engine continues to be cooled after you switch it
off, it is particularly important to give it time to cool down before
parking. The engine, brakes, exhaust system and gearbox will all
reach very high temperatures when you adopt a sporty driving style.
Before you park the vehicle, allow it to cool down to normal temper-
ature by driving at moderate rpm speeds for several miles.Driving on a racing circuitBefore you take your car out on a racing circuit, please ensure that
it is in perfect condition. You should check the tyre tread and brake
pads for wear. It's also a good idea to increase the tyre pressure by
0.3 bar.
The oil consumption may be slightly higher than “normal” when
driving on a racing circuit ⇒page 157.
You should always check your vehicle after driving hard. Are the
brake pads ok? Do you notice any problems with the tyres (e.g. tread
worn, blistering, etc.)? Are the air intakes free of leaves and
deposits? Is the oil level ok?
Your Audi R8 dealer will be glad to carry out an inspection before
and after you use the car on a racing circuit.
Note
•
Some racing circuits (e.g. with banked curves) can affect the
behaviour of the ESP.
•
Driving the car on a racing circuit places a heavy load on all parts
of the vehicle. This can result in increased wear and tear.
Environmental compatibilityEnvironmental protection is a top priority in the design, choice of
materials and production of your new Audi. Particular importance
has been attached to the following aspects:
Design measures for economical recycling•
Joints and connections designed for ease of dismantling
•
Modular construction to facilitate dismantling
•
Increased use of single-grade materials
•
Plastic parts and elastomers are labelled in accordance with ISO
1043, ISO 11469 and ISO 1629
Choice of materials
•
Nearly all materials used can be recycled
•
Similar types of plastics grouped together for easy recycling
•
Recycled materials used in manufacture
•
Reduced vapour emissions from plastics
•
CFC-free refrigerant in air conditioner
Compliance with the laws prohibiting the use of:
•
Cadmium
•
Asbestos
•
Lead
•
Mercury
•
Chrome VI
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Care of vehicle and cleaning145
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
WARNING
•
Do not wash the vehicle with the ignition switched on – risk of
accident.
•
Do not clean the underside of the car or inside the wheel arches
without protecting your hands and arms. You may cut yourself on
sharp metal parts.
•
Take care when washing the car during the winter: moisture
and ice on the brakes may affect braking efficiency – this could
cause an accident.Caution
•
Compare the track width of your vehicle with the distance
between the guide rails for the wheels in the car wash. Otherwise
there may be a risk of damaging the wheel rims and tyres.
•
Compare the ground clearance of your vehicle with the height of
the guide rails for the wheels in the car wash to prevent any damage
to the underside.
•
Compare the width of your vehicle with the available width when
entering and driving through the car wash.
•
Retract the exterior mirrors to avoid damage. Electrically retract-
able exterior mirrors must NOT be folded in or out by hand. Always
use the electrical power control.
•
Do not wash the vehicle in direct sunlight – otherwise the paint
can be damaged.
•
Do not use insect sponges, or abrasive household sponges, etc.
– they can damage the surfaces.
•
The headlights should only be washed with water – do not wipe
them with a dry cloth or sponge. It is best to use soapy water.
•
Never wash tyres with a jet that sprays the water out in a direct
stream. This could damage the tyres – even if the spray is kept at a
distance and only used for a very short time.
For the sake of the environment
The car should only be washed in special wash bays. This prevents
oily water from getting into the public drains. In some districts,
washing vehicles anywhere else may be prohibited.Waxing and polishingWaxi ng
Waxing protects the paintwork. It is time to apply a good coat of wax
when water no longer forms droplets and rolls off the clean paint-
work.
Even if a wax solution is used regularly in the car wash, it is advis-
able to protect the paint with a coat of wax at least twice a year.
In the summer, you will find it is much easier to remove dead insects
(which accumulate on the bumper and front lid) if the car has been
waxed recently.
Polishing
Polishing is only necessary if the paint has lost its shine, and the
gloss cannot be brought back by putting on wax.
The car must be waxed after polishing if the polish used does not
contain wax compounds to seal the paint.
Caution
Matt painted and plastic parts must not be treated with wax or
polish.Ornamental trim and mouldingsThe metal brightwork on the body is made of aluminium rather than
chrome (for environmental reasons).
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Care of vehicle and cleaning147
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
•
The heating element for the rear window is located on the inner
side of the window. To avoid damaging the heating element, do not
put stickers on the inner side of the window.
•
Never use warm or hot water to remove snow and ice from
windows and mirrors. This could cause the glass to crack!
Rubber seals (weatherstrips)The weatherstrips on the doors, windows, engine lid and luggage
lid will remain pliable and last longer if they are occasionally treated
with a suitable care product (for example silicone spray). This will
also prevent premature ageing and leaks. The doors will be easier to
open as well. If they are kept pliable, the door seals will be less likely
to freeze up in the winter.WheelsThe wheels require regular attention to preserve their appearance.
It is important to remove road salt and brake dust by washing the
wheels at regular intervals, otherwise the finish will be impaired.
After washing, the wheels should only be cleaned with an "acid-
free" cleaning agent for alloy wheels. This is available from Audi R8
dealers and specialist retailers. Never leave the cleaning agent on
the rims for any longer than specified in the instructions before
rinsing it off. If the wheel cleaner fluid contains acid it can attack the
surfaces of the wheel bolts.
Car polish or other abrasive agents should not be used. If the
protective paint coating is damaged by stone chips etc., the
damaged area should be touched up immediately.
WARNING
Please note when cleaning the wheels that water, ice and road salt
can impair the effectiveness of the brakes – this can cause an
accident.Care of interiorPlastic parts and leatherettePlastic parts and leatherette can be cleaned with a damp cloth. If
this is not sufficient, plastic parts and leatherette should only be
treated with a special solvent-free plastic cleaner.Applies to vehicles: with carbon partsCarbon par tsThe carbon parts on your vehicle have a painted surface. They do
not need any special care and are cleaned just like plastic parts
⇒page 147.Textile covers and trim partsTextile covers and trim parts (e.g. seats, door trim) should be
cleaned regularly with a vacuum cleaner. This will remove surface
dirt which could otherwise be rubbed into the textile material
during use. Do not use steam cleaners, as the steam could carry the
dirt deeper into the textile material.
Normal cleaning
We recommend that you use a soft sponge or lint-free, micro-fibre
cloth for normal cleaning. Only use brushes on floor coverings and
mats, as other textile surfaces could become damaged.
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Checking and topping up fluids155
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Checking and topping up fluidsEngine lidOpening the engine lid
The engine lid is released from inside the vehicle.– Open the driver's door.
– Make sure that the rear spoiler is retracted ⇒page 134.
– To release the engine lid, pull the lever under the dash-
board ⇒fig. 115.
– Open the engine lid ⇒.The engine lid is held open by two gas-filled struts.
WARNING
To avoid the risk of being scalded, never open the engine lid if you
see steam or coolant escaping from the engine compartment.
Wait until no steam or coolant can be seen before opening the
engine lid.
Working on components in the engine compartment
Extra caution is necessary when working on components
in the engine compartment.Always be aware of the danger of injury and scalding as well as the
risk of accident or fire when working in the engine compartment
(e.g. when checking and refilling fluids). Always observe the warn-
ings listed below and follow all normal safety precautions. The
engine compartment of any motor vehicle is a potentially hazardous
area ⇒.
WARNING
•
Switch off the engine.
•
Apply the handbrake firmly.
•
Put the gear lever in neutral or the R tronic selector lever in N.
•
Remove the ignition key.
•
Wait for the engine to cool down.
•
Keep children away from engine compartment.
•
Never spill fluids on hot engine components. These fluids can
cause a fire (e.g. radiator anti-freeze).
•
Take care not to cause short circuits in the electrical system,
especially when working on the battery.
•
Do not unscrew the cap on the expansion tank when the engine
is hot. The cooling system is under pressure.
•
Protect face, hands and arms by covering the cap with a large,
thick rag to protect against escaping coolant and steam.
•
If any tests have to be performed with the engine running,
there is an extra safety risk from the rotating parts, such as the
Fig. 115 Detail of foot-
well on driver's side:
Release lever
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Checking and topping up fluids161
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data If a lot of coolant has been lost, wait for the engine to cool down
before putting in cold coolant. Failure to do so could result in
serious engine damage.
WARNING
The coolant and coolant additive can be a health hazard. Store the
coolant additive in the original container in a safe place out of
reach of children – risk of poisoning.
For the sake of the environment
Drained off coolant should not be used again. Drain off the used
coolant into a suitable container and dispose of it in the proper
manner (observe environmental regulations).Radiator fan
The radiator fan can start running spontaneously.The radiator fan is powered electrically. The speed of the fan is
varied according to the temperature registered by a thermostat.
The radiator fan or auxiliary fan can continue to run for as long as
10 minutes after stopping the engine – even after the ignition is
switched off. It may also start running suddenly after a while if•
residual heat raises the coolant temperature, or
•
the hot engine compartment is additionally heated up by the
sun.
Brake fluidNote
When required, the brake fluid should be changed by a
competent mechanic with the proper equipment.Brake fluid gradually absorbs moisture from the atmosphere. If the
water content in the brake fluid is too high, this may cause corrosion
in the brake system over time. In addition, the boiling point of the
brake fluid will be considerably reduced. This could adversely affect
the braking ability in certain circumstances.
For this reason the brake fluid must be changed periodically.
Your vehicle's Service Schedule will tell you when the brake fluid has
to be changed.
The brake fluid is replaced by your Audi R8 dealer as part of the
Inspection Service. They are familiar with the procedure and have
the necessary special tools and spare parts as well as the proper
facilities for disposing of the old fluid.
Use only the genuine brake fluid specified by the factory Qualified
workshops know that the brake fluid “DOT 4” is approved by Audi.
The brake fluid must be fresh and unused.
WARNING
Heavy use of the brakes may cause a vapour lock if the brake fluid
is left in the system for too long. This would seriously affect the
efficiency of the brakes and the safety of the car – risk of
accident.
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Wheels and tyres169
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data Understanding the tyre designations makes it easier to choose the
correct tyres. For example, radial ply tyres have the following tyre
designations marked on the sidewall:
235 / 35 R 18 91 Y
This contains the following information:
The manufacturing date is also indicated on the tyre sidewall
(possibly only on the inner side of the wheel):
DOT ... 1010...
means, for example, that the tyre was produced in the 10th week of
2010.
Please note that with some types of tyres, the actual tyre size can
differ from the nominal size marked on the tyre (for instance 235/35
R 18 91 Y), and there may be significant differences in the contours
of the tyres, even though the tyres are marked with the same
nominal size designation. When replacing the tyres, it is therefore
important to make sure that the actual size of the new tyres does
not exceed the dimensions of the factory-approved makes of tyre.
Failure to observe this requirement can affect the clearance needed
for the tyres. This could result in contact between the tyres and
suspension components or bodywork. The brake lines could also be
damaged and the vehicle's safety could be severely impaired ⇒.
When using tyres with the maximum permitted nominal dimen-
sions, this can also void the vehicle's registration.If you use tyres that are approved by Audi you can be sure that the
actual tyre dimensions will be correct for your vehicle. If you decide
to fit a different type of tyre, you must obtain the appropriate manu-
facturer's certificate from the tyre retailer to confirm that the tyres
are suitable for your vehicle. Keep this certificate in a safe place.
Your local Audi R8 dealer will be able to advise you on which tyres
may be fitted to your vehicle.
On vehicles with four-wheel drive, all four tyres must always be
fitted with tyres of the same type, make and tread pattern, as other-
wise the driveline can be damaged by continuous variations in the
wheel speeds. For the same reason, only use a spare wheel with the
same tyre dimensions as the normal road wheels.
It is not permissible to use a wheel which is of a type different to
those already fitted on the vehicle (for instance when using winter
tyres) - even if you have a puncture.
It is best to have all servicing of wheels and tyres performed by a
qualified workshop. They have the necessary special tools and
replacement parts, trained personnel and facilities for disposing of
the old tyres.
WARNING
•
It is very important to ensure that the tyres you have chosen
have adequate clearance. When selecting replacement tyres, do
not rely entirely on the nominal tyre size marked on the tyre; with
some makes of tyre the effective tyre size can differ significantly
from the nominal dimensions, even though the tyres have the
same size designation. Inadequate tyre clearance can result in
damage to the tyres or the vehicle, causing a serious safety risk. It
may also invalidate the vehicle's type approval for use on public
roads.
•
Avoid running the car on tyres that are more than 6 years old.
If you have no alternative, you should drive slowly and with extra
care at all times.
235
Tyre width in mm
35
Height/width ratio in %
R
Tyre construction: Radial
18
Rim diameter in inches
91
Load rating code
Y
Speed rating code letter
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Wheels and tyres 170•
If wheel trims are fitted after the car is purchased, ensure that
there is an adequate flow of air for cooling the brakes.For the sake of the environment
Old tyres must be disposed of according to the laws in the country
concerned.
Note
•
Tyres with the “R0” mark are specially matched to your Audi. We
recommend that you use these tyres only. Your Audi R8 dealer or
specialist retailer will gladly provide you with further information.
•
Never mount used tyres if you are not sure of their previous
history.
•
For technical reasons it is not normally possible to use wheel
rims from other vehicles. In some cases this also applies to rims
from other vehicles of the same model.
Wheel bolts
The wheel bolts are designed to suit the rims on your car.The wheel bolts are matched to the rims. When installing different
wheels (for instance alloy wheels or wheels with winter tyres) it is
important to use the correct wheel bolts with the right length and
correctly shaped bolt heads. This is essential for the secure fit of the
wheels and for the proper function of the brake system.
Audi R8 dealers have full information on the technical requirements
when installing or changing tyres, rims or wheel trims.
The wheel bolts should be clean and turn easily.
A special adapter is required to turn the anti-theft wheel bolts*
⇒page 182.
Winter tyres
Winter tyres will significantly improve the car's handling
in winter road conditions.–Use only radial ply winter tyres.
– Winter tyres must be fitted on all four wheels.
– Only use winter tyres of the correct type approved for
your vehicle.
– Please note that the maximum permissible speed for
winter tyres may be lower than for summer tyres.
– Also note that winter tyres are no longer effective when
the tread is worn down.
– After fitting the wheels you must always check the tyre
pressures. The correct tyre pressures are listed on the
sticker on the driver's door pillar ⇒page 167.In winter road conditions winter tyres will considerably improve the
car's handling. Due to their type of construction (width, rubber
compound, tread pattern), summer tyres give less grip on ice and
snow. This applies particularly to vehicles equipped with wide
section tyres or high speed tyres (code letters H, V or Y on the side-
wall).
Only use winter tyres of the correct type approved for your vehicle.
The sizes of the winter tyres approved for your vehicle are listed in
the vehicle's documents (e.g. EC Certificate of Conformity or COC
document
3)). The vehicle documents vary depending on the
country of residence. Also refer to ⇒page 168.
Winter tyres are no longer fully effective when the tread is worn
down to a depth of 4 mm.
WARNING (continued)
3)COC = Certificate of conformity
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Self-help 180Preparations
Certain steps must be taken before repairing a tyre.– If you have a flat tyre, stop the car well away from moving
traffic.
– Apply the handbrake firmly.
– Engage a gear.
– Check whether a repair is possible using the Tyre
Mobility System ⇒page 178.
– Ensure that all passengers leave the vehicle and move
away from the danger area ⇒.
– Take the tyre sealant can and the electric compressor out
of the holder under the floor panel ⇒page 178, fig. 123.
– Peel the sticker “max. 80 km/h” off the tyre sealant can
and fix it onto the instrument cluster where the driver will
see it.
WARNING
•
If you have a puncture in moving traffic, switch on the hazard
warning lights and place the warning triangle in a visible location.
This is for your own safety and also warns other road users.
•
Make sure your passengers wait in a safe place (for instance
behind the roadside crash barrier).Caution
Take special care if you have to repair a tyre on a gradient.
Note
Please observe the relevant regulations.
Repairing a tyre
The following sections describe the procedures for
repairing a tyre.Setting up the Tyre Mobility System
– Open the flap on the electric compressor ⇒fig. 125.
– Pull the connector and the compressor hose
including the pressure gauge out of the housing.
– Screw the compressor hose onto the flange of the
tyre sealant can .
– Place the tyre sealant can (flange facing down) into the
opening on the flap of the compressor.
Fig. 125 Components
of the Tyre Mobility
SystemFig. 126 Connecting
the Tyre Mobility
System
A2
A4
A5
A5
A6
A1
A3
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Self-help 184•
The car can be damaged if the jack is not applied at the correct
jacking points. There is also a risk of injury since the jack can slip
off suddenly if it is not properly engaged.Caution
A trolley jack or lifting platform must not be applied at the points
shown ⇒page 183, fig. 128 -arrows-.Taking off / putting on the wheel
Step-by-step instructions for taking off and putting on the
wheel.Change the wheel as described below after loosening the
wheel bolts and raising the vehicle with the jack.
Taking off the wheel
–Using the hexagonal opening in the screwdriver handle
(provided in the vehicle's tool kit), unscrew the wheel bolt
nearest to the top and place the bolt on a clean surface.–Screw in the mounting pin (provided in the vehicle's tool
kit) by hand in place of the wheel bolt ⇒fig. 130.
– Then unscrew the other wheel bolts as described above.
– Take off the wheel ⇒. The mounting pin stays where
it is.
Putting on the wheel
– Put on the spare wheel, using the mounting pin to guide
it into place ⇒.
– Screw in the wheel bolts and tighten them lightly using
the hexagonal opening in the screwdriver handle.
– Then unscrew the mounting pin and tighten the
remaining wheel bolt lightly.
The wheel bolts should be clean and turn easily. Before putting on
the wheel, inspect the condition of the wheel and hub mounting
surfaces. These surfaces must be clean before mounting the wheel.
The hexagonal opening in the screwdriver handle makes it easier to
turn the wheel bolts when they are loose. The reversible screwdriver
blade should be removed when the tool is used for this purpose.
Note the direction of rotation when putting on a tyre with direc-
tional tread pattern ⇒page 182.
Caution
When removing/fitting the wheel the rim may hit and damage the
brake disc. For this reason, please take care and get a second person
to assist you.
Note
Do not use the hexagonal socket in the screwdriver handle to loosen
or tighten the wheel bolts.
WARNING (continued)
Fig. 130 Changing a
wheel: Mounting pin in
wheel bolt hole nearest
to the top
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Self-help187
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Caution
Please note that the described method of connecting the leads is
meant for jump-starting your vehicle. If jump-starting another
vehicle, you should not connect the negative lead (–) to the negative
terminal of the discharged battery ⇒page 186, fig. 131 , but
directly to the engine block or a solid metal part bolted to the engine
block. If the battery of the other vehicle does not have a gas vent,
there is a risk that a mixture of oxygen and hydrogen gas can accu-
mulate and cause an explosion.Tow-starting and towing awayGeneral notes
Points to observe when tow-starting or towing awayIf you use a towrope:
Notes for the driver of the towing vehicle
– The towrope must be taut before driving off.
– Engage the clutch very gently when starting to move
(press the accelerator slowly if you have R tronic).
Notes for the driver of the towed vehicle
– The ignition should be switched on so that the turn
signals, horn, windscreen wipers and washers can be
used. Please ensure that the steering wheel is unlocked
when you switch on the ignition and that it moves freely.
– Put the gear lever in neutral or move the selector lever to
position N.– The brake servo and power steering only work when the
engine is running. Considerably more effort is required
on the brake pedal and steering wheel when the engine
is switched off.
– Ensure that the towrope remains taut at all times when
towing.
Towrope or towbar
It is easier and safer to tow a vehicle with a towbar. You should only
use a towrope if you do not have a towbar.
A towrope should be slightly elastic to reduce the loading on both
vehicles. It is advisable to use a towrope made of synthetic fibre or
similar material.
Attach the towrope or the towbar only to the towing anchorages
provided for this purpose ⇒page 188.
Driving technique
Towing requires some experience – especially when using a
towrope. Both drivers should be familiar with the technique required
for towing. Inexperienced drivers should not attempt to tow-start or
tow away another vehicle.
Do not pull too hard with the towing vehicle and take care to avoid
jerking the towrope. When towing on a loose surface there is always
a risk of overloading and damaging the anchorage points.
Caution
If there is no oil in the gearbox or no lubricant in the automatic
transmission the car may only be towed with the driven wheels
lifted clear of the road, or transported on a special car transporter
or trailer.
Note
•
Note the regulations concerning towing.
A4
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