coolant AUDI R8 2007 User Guide

Checking and topping up fluids159
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
•
No additives should be used with engine oil. Any damage caused
by the use of such additives would not be covered by the factory
warranty.For the sake of the environment
•
Never pour oil down drains or into the ground.
•
Always observe statutory requirements when disposing of
empty oil canisters.
Cooling systemCoolant
The purpose of the coolant is to carry heat away from the
engine. The correct amount of anti-freeze is important to
prevent the cooling system from freezing in winter.The cooling system is filled for life at the factory, so the coolant does
not need to be changed. The coolant consists of a mixture of water
and anti-freeze additive G12++. This is a glycol-based anti-freeze
with anti-corrosion additives.
Anti-freeze additive
The amount of anti-freeze additive required depends on the temper-
atures to be expected in the winter season. If the anti-freeze concen-
tration is too low the coolant can freeze, resulting in failure of the
cooling system and heater.
The cooling system is filled at the factory with the correct amount of
anti-freeze for the country concerned.
In most cases the mixture consists of 60% water and 40% additive.
This mixture gives the required anti-freeze protection at tempera-
tures down to – 25 °C and protects the alloy parts of the cooling
system against corrosion. It also prevents scaling and raises the
boiling point of the coolant.Countries with warm climate
The coolant concentration must not be reduced by adding plain
water, even in the summer or in warm climates. The concentration
of the anti-freeze additive must always be at least 40%.
Countries with cold climate
If greater anti-freeze protection is required in very cold climates, the
proportion of the anti-freeze additive G12++ can be increased. A
concentration of 60% offers protection down to about -40 °C. The
concentration of the anti-freeze additive must not be more than
60%, otherwise this would reduce the anti-freeze protection. In addi-
tion, the cooling effect will be adversely affected.
Vehicles for export to countries with a cold climate (such as Sweden,
Norway and Finland) are supplied with antifreeze protection down
to about -35 °C. The concentration of the antifreeze additive for
these countries should always be at least 50%.
Caution
•
It is advisable to have the cooling system checked before the
winter season to make sure that the anti-freeze concentration is
adequate for the conditions to be expected. This applies particularly
if you intend to take the car into a colder climate zone. If necessary,
have the anti-freeze concentration increased to 50 - 60% as required.
•
Use only antifreeze additive G12++, an additive meeting the
specification “TL-VW 774G”. Other additives may give considerably
inferior corrosion protection. The resulting corrosion in the cooling
system can lead to a loss of coolant, causing serious damage to the
engine.
•
The coolant additive G12++ must not be mixed with any other
additives.
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Checking and topping up fluids 160Checking coolant level
Be careful when checking the coolant.– Switch off the ignition.
– Cover the cap on the expansion tank with a cloth, and
carefully unscrew the cap anti-clockwise ⇒.
– Read off the coolant level on the inside of the radiator
expansion tank ⇒fig. 120. When the engine is cold it
must be above the “min” mark. When the engine is hot it
may be slightly above the marked area.The expansion tank is located in the engine compartment on the
right. Its location is also shown in the illustration of the engine
compartment ⇒page 156.
The coolant level should be checked with the engine switched off.
The coolant level is monitored by a warning lamp in the instrument
cluster ⇒page 35. However, we recommend that it should be
checked occasionally.
Coolant losses
Any loss of coolant normally indicates a leak in the cooling system.
In this case the cooling system should be inspected by a qualified workshop without delay. It is not sufficient merely to top up the
coolant.
If there are no leaks in the system, a loss of coolant can only occur
if the coolant boils and is forced out of the system as a result of
overheating.
WARNING
•
The cooling system is under pressure. Do not unscrew the cap
on the expansion tank when the engine is hot: you could be
scalded by escaping steam
•
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.Caution
Radiator sealants must not be added to the coolant. Such additives
could seriously impair the function of the cooling system.Topping up the coolant– Add coolant.
– Turn the cap clockwise until it engages.Make sure that the coolant meets the required specifications
⇒page 159, “Coolant”. Do not use a different type of additive if anti-
freeze additive G12++ is not available. In this case use only water
and bring the coolant concentration back up to the correct level as
soon as possible by putting in the specified additive.
Always top up with fresh, unused coolant.
Fill up only to the top edge of the marked area. Excess coolant is
forced out of the system through the valve in the filler cap when the
engine gets hot.
Fig. 120 Engine
compartment: Mark-
ings on radiator expan-
sion tank
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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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Index203
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data Car keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Carbon parts
Exterior . . . . . . . . . . . . . . . . . . . . . . . . . 146
Interior . . . . . . . . . . . . . . . . . . . . . . . . . 147
Care of vehicle . . . . . . . . . . . . . . . . . . . . . . 144
Catalytic converter . . . . . . . . . . . . . . . . . . 138
Central locking system . . . . . . . . . . . . . . . . 42
Deadlock mechanism . . . . . . . . . . . . . . 44
Locking . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Locking and unlocking the vehicle from
inside . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Locking doors manually . . . . . . . . . . . . 46
Luggage lid . . . . . . . . . . . . . . . . . . . . . . . 47
Opening and closing windows . . . . . . . 43
Security central locking . . . . . . . . . . . . 46
Switches . . . . . . . . . . . . . . . . . . . . . . . . . 45
Unlocking . . . . . . . . . . . . . . . . . . . . . . . . 44
Ceramic brake discs
Changing a wheel . . . . . . . . . . . . . . . . 184
Changing a wheel . . . . . . . . . . . . . . . . . . . 182
Changing bulbs . . . . . . . . . . . . . . . . . . . . . 193
Chassis number . . . . . . . . . . . . . . . . . . . . . 196
Child safety . . . . . . . . . . . . . . . . . . . . . . . . 122
Child safety seat . . . . . . . . . . . . . . . . . . . . 123
Child seat categories . . . . . . . . . . . . . . 123
Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . 126
ISOFIX system . . . . . . . . . . . . . . . . . . . 128
Safety notes . . . . . . . . . . . . . . . . . . . . . 122
Cigarette lighter . . . . . . . . . . . . . . . . . . . . . 72
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Cleaning Alcantara . . . . . . . . . . . . . . . . . . 150Cleaning seat covers
Alcantara . . . . . . . . . . . . . . . . . . . . . . . . 150
Natural leather . . . . . . . . . . . . . . . . . . . 149
Textile covers . . . . . . . . . . . . . . . . . . . . 147
Cleaning textile covers and trim parts . . 147
Closing
Engine lid . . . . . . . . . . . . . . . . . . . . . . . 156
Clutch overheating . . . . . . . . . . . . . . . . . . . 38
Colour code . . . . . . . . . . . . . . . . . . . . . . . . 196
Coming home function . . . . . . . . . . . . . . . . 54
Compartment for (sun)glasses . . . . . . . . . 73
Compass in mirror . . . . . . . . . . . . . . . . . . . 65
Conformity certification . . . . . . . . . . . . . . . 98
Controls and displays
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Convenience close . . . . . . . . . . . . . . . . . . . 43
Convenience open . . . . . . . . . . . . . . . . . . . . 43
Cooling system
Anti-freeze additive . . . . . . . . . . . . . . . 159
Checking coolant level . . . . . . . . . . . . 160
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . 159
Coolant temperature gauge . . . . . . . . . 12
Malfunction . . . . . . . . . . . . . . . . . . . . . . 35
Radiator fan . . . . . . . . . . . . . . . . . . . . . 161
Topping up coolant . . . . . . . . . . . . . . . 160
Cruise control system . . . . . . . . . . . . . . . . . 86
Adjusting stored speed . . . . . . . . . . . . . 87
Indicator lamp . . . . . . . . . . . . . . . . . . . . 17
Setting speed . . . . . . . . . . . . . . . . . . . . . 87
Switching off . . . . . . . . . . . . . . . . . . . . . 88
Switching off temporarily . . . . . . . . . . . 88
Cup holders . . . . . . . . . . . . . . . . . . . . . . . . . 72
Current fuel consumption . . . . . . . . . . . . . 22
DDashboard lighting
SeeInstrument lighting . . . . . . . . . . . . . 55
Date display . . . . . . . . . . . . . . . . . . . . . . . . . 12
Daytime running lights . . . . . . . . . . . . . . . . 52
Deactivating front passenger's airbag . . 120
Deadlock mechanism . . . . . . . . . . . . . . . . . 44
Defrosting windows . . . . . . . . . . . . . . . . . . 78
Deluxe automatic air conditioner
Economical operation . . . . . . . . . . . . . . 79
Description of R tronic . . . . . . . . . . . . . . . . 90
Digital clock . . . . . . . . . . . . . . . . . . . . . . . . . 12
Digital compass . . . . . . . . . . . . . . . . . . . . . . 65
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . 198
Dipped headlights . . . . . . . . . . . . . . . . . . . . 52
Defective . . . . . . . . . . . . . . . . . . . . . . . . . 37
Distance covered . . . . . . . . . . . . . . . . . . . . . 23
Door catches, engine lid and front lid
warning . . . . . . . . . . . . . . . . . . . . . . . . 20
Doors
Locking doors manually . . . . . . . . . . . . 46
Driver
SeeSitting position . . . . . . . . . . . . . . . 104
Driver information system
CD and radio display . . . . . . . . . . . . . . . 20
Door catches, engine lid and front lid
warning . . . . . . . . . . . . . . . . . . . . . . . . 20
Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Menu button . . . . . . . . . . . . . . . . . . . . . . 25
Menu display . . . . . . . . . . . . . . . . . . . . . 24
On-board computer . . . . . . . . . . . . . . . . 22
Outside temperature display . . . . . . . . 20
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