stop start AUDI R8 2007 User Guide

Lights and vision 60The windscreen washer jets are heated when the ignition is
switched on.
When the lights are switched on you should only pull the lever
briefly to wash the windscreen, otherwise the headlight washers
will also be activated. This will use an unnecessary amount of fluid
from the reservoir.
WARNING
•
Poor visibility can cause accidents. Always ensure that the
wiper blades are in good condition ⇒page 62, “Changing wiper
blades”.
•
The light sensor/ rain sensor* is only intended to assist the
driver. The driver is still obliged to manually operate the wind-
screen wipers and the lights as required depending on visibility.
•
Do not use water-repellent coatings on the windscreen. In bad
visibility conditions such as light rain, low sun or when driving at
night these coatings can cause increased dazzle, which is a
serious safety hazard. Such coatings can also cause the wiper
blades to judder.Caution
•
In icy conditions, always check that the wiper blades are not
frozen to the glass before using the wiper for the first time. If you
switch on the wipers when the wiper blades are frozen to the glass,
this could damage both the wiper blades and the wiper motor.
•
Make sure you switch off the windscreen wiper system (lever in
position "0") before you use an automatic car wash. This will avoid
inadvertent triggering of the wipers and possible damage to the
wiper system.Note
•
Check that the washer fluid reservoir is full before starting a long
journey. Filling the reservoir ⇒page 164.
•
Worn or dirty wiper blades can cause smearing on the glass
which can also impair the effectiveness of the light sensor/ rain
sensor*. Please check the wiper blades regularly.
•
If you leave the windscreen wiper lever set to the intermittent
wipe function when the ignition is switched off, the light sensor/
rain sensor* will not be activated until you reach a road speed of at
least 6 km/h.
•
Applies to vehicles with light sensor/ rain sensor: If the wind-
screen wipers have been activated manually and it is raining, the
automatic headlights* will come on ⇒page 53, “Automatic (sensor-
controlled) headlights”. In the daytime the headlights will automat-
ically go off again once the wipers are switched off. The automatic
headlights* function is only available if the light switch is in the
“AUTO” position ⇒page 53, fig. 47.
Headlight washer systemWith the lights switched on, operate the automatic wind-
screen wash and wipe ⇒page 59, fig. 54 , and keep the
lever pulled towards you for at least 1 second.The headlight washer jets come out of the bumper automatically
(under water pressure).
Clean off stubborn dirt (insects, etc.) from the lenses at regular
intervals, for instance when stopping for fuel.
To ensure that the system works properly in winter, keep the nozzle
holders free of snow and remove any ice with a de-icer spray.
A5
document_0900452a816e6cc9.book Seite 60 Mittwoch, 21. Februar 2007 1:32 13

Driving83
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Switching off the engineOn vehicles with R tronic, the engine can be switched off in
neutral (N) or in any gear (1 - 6 or R).
– Turn the ignition key to position ⇒page 81, fig. 72.
WARNING
•
Never switch off the engine until the vehicle is stationary.
•
The brake servo and the power steering system work only
when the engine is running. You need more strength to steer and
brake the vehicle when the engine is switched off. This would
mean a greater risk of accidents and serious injury, because you
cannot steer and brake in the normal manner.Caution
•
If the engine has been working hard for a long time, there is a risk
of heat building up in the engine compartment after the engine has
been switched off; this could cause engine damage. For this reason,
you should leave the engine idling for a few minutes or drive at a
moderate speed to let the engine cool down before switching it off
⇒page 139.
•
Because the engine can get very hot after working hard, do not
park the vehicle on surfaces which could catch fire (e.g. on grass or
at the forest edge).Note
After the engine is stopped the radiator fan may run on for up to
10 minutes, even if the ignition is switched off. The fan may also
start running again after some time if the coolant temperature rises
due to a build-up of heat, or if the engine is hot and the engine
compartment is heated up further by direct sunlight.
HandbrakeHandbrake
The handbrake should be applied firmly to prevent the
vehicle from accidentally rolling away.Applying the handbrake
– Pull the handbrake lever up all the way.
Releasing the handbrake
– Pull the lever up slightly and at the same time press in the
release button ⇒fig. 73 -arrow-.
– Keep the release button pressed and push the lever all
the way down ⇒.The handbrake warning lamp
 lights up when the handbrake is
applied with the ignition on.
A1
Fig. 73 Detail of the
centre console: Hand-
brake applied
document_0900452a816e6cc9.book Seite 83 Mittwoch, 21. Februar 2007 1:32 13

Driving 84
WARNING
Please note that the handbrake should be released all the way. If it
is only partially released this will cause overheating of the rear
brakes, which can impair the function of the brake system and
could lead to an accident.
Caution
Once the vehicle has come to a standstill, always apply the hand-
brake firmly and then engage a gear.Parking the car
Please note the following points to ensure there is no risk
of the car rolling away accidentally after it is parked.– Use the foot brake to stop the vehicle.
– Apply the handbrake firmly.
– Switch the engine off.
– Engage a gear ⇒.When parking on gradients
Turn the steering wheel so that the vehicle would roll into the kerb
if it did start to move accidentally.
WARNING
•
Do not leave anyone (especially children) in the vehicle when it
is locked. Locked doors could delay assistance in an emergency,
potentially putting lives at risk.
•
Never leave children unsupervised in the vehicle. They could,
for example, release the handbrake or put the gearbox in neutral.
The vehicle could then start moving and cause an accident.
Applies to vehicles: with hill hold assistDriving away on a slopeThe hill hold assist function makes it easier to drive away on a slope.
The system is activated when you press and hold the brake pedal for
a few seconds.
When you release the brake pedal the braking force will be main-
tained for a moment in order to hold the vehicle and make it easier
for you to drive away.
WARNING
•
If you do not drive away immediately after releasing the brake
pedal the vehicle could start to roll back. You should therefore
immediately press the brake pedal or apply the handbrake.
•
If the engine should stall you must immediately press the brake
pedal or apply the handbrake firmly.
•
If you are driving away on a slope in stop-and-go traffic press
and hold the brake pedal for a few seconds before driving off. This
will prevent the vehicle from rolling back unintentionally.Note
To find out whether your vehicle is equipped with the “hill hold
assist” function please contact an Audi R8 dealership or qualified
workshop.
document_0900452a816e6cc9.book Seite 84 Mittwoch, 21. Februar 2007 1:32 13

Driving85
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Parking aidApplies to vehicles: with 8-channel parking aidFront and rear parking aid
The parking aid warns you if there are any obstacles
behind or in front of the car.Description
The front and rear acoustic parking aid (8-channel parking aid) uses
ultrasonic sensors to measure the distance between the vehicle and
an obstacle. The sensors are located in the front and rear bumpers.
The measuring range of the sensors starts at approximately:
Activating
The parking aid is activated automatically when reverse gear is
engaged. This is confirmed by a short beep.
The parking aid can also be activated manually by pressing the
switch
 in the centre console ⇒fig. 74. This is also confirmed by
a short beep. At the same time a diode in the switch will light up.Activate the system manually if you are driving forwards and would
like the system to give warning as you approach potential obstacles,
for instance when parking.
Deactivating
The parking aid is switched off automatically when the vehicle
reaches a speed of about 15 km/h. It also switches itself off when
you stop the engine.
You can also deactivate the parking aid manually with the switch

⇒fig. 74.
Warning beeps
The warning beeps are produced by sound boxes located at the
front and rear of the vehicle. You can adjust the volume and pitch of
the beeps ⇒page 24.
Reversing
When the vehicle is reversing, the system starts to beep when it
registers an obstacle within its detection range (see above). The
warnings will beep increasingly rapidly as the vehicle approaches
the obstacle.
When the vehicle is less than 0.35 m away from the obstacle the
warning tone will sound continuously. The driver should then not
reverse any further.
Please note that low obstacles detected by the system may no
longer be registered by the sensors as the car moves closer, so the
system will not give any further warning.
Driving forwards
The same proximity warnings are given when driving forwards, but
obstacles have to be within a slightly closer range before they are
detected (the front measuring range is shorter). The warning tone
will sound continuously when the vehicle is less than 0.30 m away
from the obstacle.
Side sensors
0.60 m
Centre sensors at rear
1.50 m
Centre sensors at front
1.00 mFig. 74 Parking aid
switch in centre
console
document_0900452a816e6cc9.book Seite 85 Mittwoch, 21. Februar 2007 1:32 13

Automatic gearbox 90Automatic gearboxApplies to vehicles: with R tronicDescriptionR tronic is an automatic sequential-shift gearbox using shift-by-wire
technology to operate the clutch and change the gears.
The gears are engaged manually (the principle is similar to a manual
gearbox) but they can also be shifted automatically. The engine can
be started and stopped in any gear ⇒page 82.
The driver information system displays the selected mode, the
engaged gear and the sport function ⇒fig. 78.M - Manual mode
In this mode, you use the selector lever ⇒page 91 or the paddle
levers on the multi-function steering wheel ⇒page 93 to change
the forward gears up and down.
A - Automatic mode
In this mode the forward gears are shifted up and down automati-
cally according to the engine load and road speed ⇒page 92.
R - Reverse gear
Reverse gear must only be engaged when the vehicle is stationary
and the engine is idling ⇒.
To engage reverse gear press the brake pedal then move the
selector lever to the right before pulling it briefly towards the R
symbol. The reversing lights come on when reverse gear is engaged
with the ignition on.
N - Neutral
To engage neutral gear, the selector lever has to be moved to the
right or left. If reverse gear is engaged, move the selector lever to
the left. If a forward gear is engaged, move the selector lever to the
right.
Sport function
Press the button to activate the sport function. Upshifts are
then delayed to make use of the maximum engine power. The shift
time is reduced and the accelerator pedal has a lighter response. In
addition, the car does not automatically shift up a gear before the
maximum engine speed is reached when you are in manual mode.
The car will automatically shift up a gear in the normal way when
you are in automatic mode.
Fig. 77 Gear shift
patternFig. 78 Display:
Engaged gears
SPORT
document_0900452a816e6cc9.book Seite 90 Mittwoch, 21. Februar 2007 1:32 13

Automatic gearbox91
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
WARNING
•
The accelerator pedal must on no account be pressed inadvert-
ently when a gear is engaged with the vehicle stationary. If this
were to happen, the vehicle would start to move immediately, and
even a firmly applied handbrake might not restrain it (accident
risk).
•
To avoid accidents, apply the handbrake firmly and select
neutral gear (N) before opening the engine lid and working on the
vehicle with the engine running. Please observe the important
safety warnings ⇒page 155, “Working on components in the
engine compartment”.Note
If you accidentally shift to N when driving, you can engage a gear in
the normal way using the selector lever or paddle levers.Applies to vehicles: with R tronicManual modeR tronic allows the driver to change gears manually.Driving away from a standstill
– Press and hold the brake pedal.
– Move the selector lever to the left.
– Briefly push the selector lever forwards .
– Release the brake and press the accelerator ⇒.
Changing gear
– Briefly push the selector lever forwards to change up
a gear.– Briefly pull the selector lever back to change down a
gear.
Stopping briefly
– Apply the foot brake to hold the vehicle when stationary
(for instance at traffic lights).
– Do not press the accelerator while waiting. Neutral gear
(N) will be engaged automatically and a warning tone will
sound after a certain period if the vehicle is at a standstill
and you do not press the brake pedal or accelerator.
Parking
– Press and hold the brake pedal ⇒.
– Apply the handbrake firmly.
– Engage a gear.
– Switch off the ignition.
Stopping on a slope
–Always apply the footbrake to hold the vehicle and
prevent it “rolling back” down the slope ⇒. Do not try
to stop the vehicle “rolling back” by increasing the
engine speed when a gear is engaged.
– Apply the handbrake firmly.
Driving away on a slope
– Once you have engaged a gear, release the footbrake,
press the accelerator and gradually release the hand-
brake.
When accelerating in 1st, 2nd, 3rd, 4th or 5th gear, the R tronic
gearbox automatically shifts up into the next gear shortly before the
A+A+
A-
document_0900452a816e6cc9.book Seite 91 Mittwoch, 21. Februar 2007 1:32 13

Safe driving107
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
•
never stand on the seats,
•
never kneel on the seats,
•
never travel with the backrest reclined too far,
•
never lean against the dash panel,
•
never sit on the front edge of a seat,
•
never sit sideways,
•
never lean out of the window,
•
never put your feet out of the window,
•
never put your feet on the dash panel,
•
never put your feet on the seat cushion,
•
never ride in the footwell,
•
never travel on a seat without wearing the seat belt.
WARNING
Sitting out of position increases the risk of severe injuries.•
Sitting out of position exposes the occupants to potentially
fatal injuries: if the airbags inflate they can strike any occupant
who is not in one of the designed seat positions.
•
Before starting a trip, sit in the correct position and stay in this
position as long as the vehicle is moving. Before every trip, make
sure all passengers are sitting in the correct positions and remain
correctly seated at all times ⇒page 67, “Seats and storage”.
Pedal are aPedal s
The pedals must always be free to move and must never
be obstructed by floor mats or any objects in the footwell.– Make sure that the accelerator, brake and clutch pedals
are not obstructed and can be pressed all the way down
to the floor.
– Make sure that all pedals are able to return freely to their
original positions.Only use floor mats which leave the pedal area free and can be
securely fastened in the footwell.
If one of the brake circuits should fail, increased brake pedal travel
will be required to bring the vehicle safely to a stop.
WARNING
Any obstructions that restrict pedal travel can cause loss of
vehicle control and critical situations in traffic.•
Never place objects in the driver's footwell. Such objects could
move under the pedals and interfere with their proper function. In
the event of sudden braking or a change of direction, you would
not be able to use the pedals. This could result in a loss of control
and possibly cause an accident.
Floor mats on the driver's side
Use only floor mats which can be securely fastened in the
footwell and do not obstruct the pedals.– Make sure that floor mats are securely fastened and
cannot interfere with the pedals ⇒.
document_0900452a816e6cc9.book Seite 107 Mittwoch, 21. Februar 2007 1:32 13

Intelligent technology 132Intelligent technologyElectronic stabilisation program (ESP)The Electronic Stabilisation Program increases the car's
stability.Description
The anti-lock brake system (ABS), the electronic differential lock
(EDL) and the traction control system (ASR) are all integrated into
the electronic stabilisation program (ESP). The ESP is designed to
enhance the control over the vehicle in critical handling situations,
such as when accelerating and cornering. It reduces the tendency to
skid at all speeds under all road conditions and improves the
stability and roadholding of the vehicle. ESP helps the car to start
moving, accelerate and climb a gradient in slippery conditions
where this may otherwise be difficult or even impossible. The ESP is
switched on automatically when the engine is started. It should
normally be left switched on at all times for optimum car stability.
Driving situations
If the car is oversteering (rear wheels losing grip first) the ESP
mainly brakes the outside front wheel; if the car is understeering
(front wheels losing grip first), the ESP brakes the inside rear wheel
and possibly also other wheels. This automatic brake application is
accompanied by characteristic noises.If, when braking, one of the wheels is turning too slowly in relation
to the road speed and is close to locking up, the system will reduce
the pressure in the brake line to this wheel. The driver is made aware
of this control process by a pulsating of the brake pedal and accom-
panying noise. In this situation it is important to keep the brake
pedal fully depressed so the ABS can regulate the brake application
- do not “pump” the brake pedal. However, the ABS will not neces-
sarily guarantee shorter stopping distances in all conditions. For
instance, on loose gravel or fresh snow on top of an icy surface the
stopping distance with ABS may even be slightly longer.
Whenever it detects a significant difference in the speed of the driven
wheels of one axle (for example, if the road is slippery on one side)
the electronic differential lock (EDL) applies the brake to slow down
the spinning wheel so that more of the power is directed to the
other wheels. This function is active up to about 100 km/h. The brake
system will make noises while it is working.
If one wheel has less grip and starts spinning (for instance, if one of
the driven wheels is on ice), press the accelerator hard until the car
starts moving.
If the wheels start to spin, the traction control system (ASR) auto-
matically reduces the engine torque to match the amount of grip
available.
Activating the sport mode
If required (for instance if you want to use the launch control), you
can switch the traction control system (ASR) and electronic stabili-
sation program (ESP) to sport mode by pressing the button
once. The ESP warning lamp will light up and the message ASR off
will appear in the driver information system display. The amount of
wheel slip is regulated according to the road speed. You should only
use this feature if your driving ability and traffic conditions allow
you to do so safely.
Fig. 110 Centre
console with ESP
switch
ESP
document_0900452a816e6cc9.book Seite 132 Mittwoch, 21. Februar 2007 1:32 13

Intelligent technology135
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data We ar
The rate of wear on the brake pads depends a great deal on how you
drive and the conditions in which the vehicle is operated. Negative
factors are, for instance, city traffic, frequent short trips or hard
driving with abrupt starts and stops.
Wet roads; road salt
When you are driving at a speed higher than 70 km/h and have the
windscreen wipers switched on (at or above intermittent setting 4)
the brake pads are very briefly brought into contact with the brake
discs. This automatic process which goes unnoticed by the driver is
carried out at regular intervals and is intended to improve braking
response in wet conditions.
In certain conditions, such as in heavy rain, or after washing the car
or driving through water, the full braking effect can be delayed by
moisture (or in winter by ice) on the discs and brake pads. The
brakes should be “dried” by pressing the pedal to restore full
braking effect.
The effectiveness of the brakes can also be temporarily reduced if
the car is driven for some distance without using the brakes when
there is a lot of salt on the road in winter. The layer of salt that accu-
mulates on the discs and pads can be removed with a few cautious
brake applications.
Corrosion
There may be a tendency for dirt to build up on the brake pads and
corrosion to form on the discs if the car is used infrequently, or if
you only drive low mileages without using the brakes very much.
If the brakes are not used frequently, or if corrosion has formed on
the discs, it is advisable to clean off the pads and discs by braking
firmly a few times from a moderately high speed ⇒.
Faults in the brake system
If the brake pedal travel should ever increase suddenly, this may
mean that one of the two brake circuits has failed. Drive immedi-
ately to the nearest qualified workshop and have the fault rectified. On the way to the dealer, be prepared to use more pressure on the
brake pedal and allow for longer stopping distances.
Low brake fluid level
Malfunctions can occur in the brake system if the brake fluid level is
too low. The brake fluid level is monitored electronically.
Brake servo
The brake servo amplifies the pressure you apply to the brake pedal.
It only works when the engine is running.
WARNING
•
When applying the brakes to clean off deposits on the pads and
discs, select a clear, dry road. Be sure not to inconvenience or
endanger other road users; do not risk an accident.
•
Never let the car coast with the engine switched off (this can
cause accidents).Caution
•
Never let the brakes “drag” by leaving your foot on the pedal
when you do not really intend to brake. This overheats the brakes,
resulting in longer stopping distances and greater wear.
•
Before driving down a long, steep gradient, it is advisable to
reduce speed and select a lower gear. In this way you will make use
of the engine braking effect and relieve the load on the brakes. If you
still have to use the brakes, it is better to brake firmly at intervals
than to apply the brakes continuously.Note
•
If the brake servo is out of action due to a malfunction, or if the
car has to be towed, you will have to press the brake pedal consid-
erably harder to make up for the lack of servo assistance.
•
If you wish to equip the car with accessories such as a front
spoiler or wheel covers, it is important that the flow of air to the
document_0900452a816e6cc9.book Seite 135 Mittwoch, 21. Februar 2007 1:32 13

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.
document_0900452a816e6cc9.book Seite 161 Mittwoch, 21. Februar 2007 1:32 13