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
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Automatic gearbox 92maximum engine speed is reached, unless you have activated the
sport function ⇒page 90.
If you select a lower gear, the R tronic gearbox will not shift down
until there is no risk of overrevving the engine.
You can change over to automatic mode at any time ⇒page 92.
WARNING
•
The driver should never get out of the vehicle when the engine
is running and a gear is engaged. If you have to leave your vehicle
while the engine is running, you must apply the parking brake and
engage neutral gear (N).
•
If the engine is running and a gear is engaged, you will need to
hold the car with the footbrake.
•
Do not press the accelerator while selecting a gear with the
vehicle stationary and the engine running, as this could cause an
accident.
•
To avoid rolling back on gradients always hold the vehicle with
the footbrake if you have to stop. Never attempt to hold the vehicle
with the clutch when stopping on a gradient. The clutch is disen-
gaged automatically if it is overloaded and becomes too hot - acci-
dent risk! Before the clutch is disengaged, the vehicle will jolt and
the driver information system will display a warning that the
clutch is overloaded.
•
Before you drive down a steep gradient, reduce the speed and
use the R tronic to select a lower gear.
•
Never allow the brake to drag and do not use the brake pedal
too often or for long periods. Constant braking will cause the
brakes to overheat and will considerably reduce the effectiveness
of the brakes. It will increase the braking distance and could cause
the brake system to fail.
Applies to vehicles: with R tronicAutomatic modeThe gearbox changes the forward gears up and down
automatically.Driving away from a standstill
– Press and hold the brake pedal.
– Briefly push the selector lever towards position A.
– Release the brake and press the accelerator ⇒ in
“Manual mode” on page 91.In some situations (such as when driving on mountain roads) it can
be advantageous to switch temporarily to the manual shift
programme ⇒page 91, so that the gear ratios can be selected
manually to suit the driving conditions.Applies to vehicles: with R tronicKick-down featureWhen the accelerator pedal is pressed right down past the point of
resistance at full throttle, the R tronic gearbox will shift down to a
lower gear, depending on road speed and engine speed. The upshift
to the next higher gear is delayed until the engine reaches
maximum rpm. This does not apply if you have activated the sport
function.
WARNING
Please note that if the road surface is slippery or wet, the kick-
down feature could cause the driving wheels to spin, which could
result in skidding.
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Automatic gearbox93
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Applies to vehicles: with R tronicLaunch control programmeThe launch control programme enables maximum accel-
eration.– Press the ESP switch once while the engine is running.
The ESP warning lamp
will light up in the driver infor-
mation system display.
– Press and hold the brake pedal with your left foot.
– Engage a gear.
– Press the button.
– Press the accelerator all the way down with your right
foot until the engine reaches a constant rpm speed.
– Take your left foot off the brake ⇒.
WARNING
•
Always adapt your driving style to the traffic conditions.
•
Only use the launch control programme when road and traffic
conditions permit, and make sure your manner of driving and
accelerating the vehicle does not inconvenience or endanger other
road users.
•
Please note that, when the ESP is switched off, the driven
wheels may start to spin, causing the vehicle to lose grip, in partic-
ular on slippery or wet roads - danger of skidding!
•
When acceleration has been completed, the ESP should be
reactivated by pressing the ESP switch.
Note
Accelerating with the launch control programme places a heavy
load on all parts of the vehicle. This can result in increased wear and
tear.Applies to vehicles: with R tronicSteering wheel with paddle leversThe paddle levers behind the steering wheel allow you to
change gear manually without taking your hands off the
steering wheel.– Briefly pull the left-hand paddle lever to change down
to a lower gear.
– Briefly pull the right-hand paddle lever to change up
to a higher gear.The manual shift programme can, of course, still be operated using
the selector lever in the centre console.
SPORT
Fig. 79 Sports steering
wheel with Paddle
leversA-A+
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Automatic gearbox 94Applies to vehicles: with R tronicBackup programmeA back-up system is in place if a fault should occur in the
control system.The R tronic gearbox switches to the back-up programme if a fault
should occur in the control system. If this happens, a red bar will
light up or flash in the driver information system display.
A permanently lit bar indicates that you can continue driving the
vehicle.
A flashing bar indicates a serious system fault:•
The programme will only move into certain gears.
•
The engine may stall.
•
The engine cannot be started again after it is switched off.
•
The vehicle may be damaged if you continue driving.Caution
If the R tronic gearbox should ever switch to the back-up
programme you should take the vehicle to a workshop as soon as
possible.
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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
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Intelligent technology133
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data Switching off the ESP and traction control system
(ASR)
To switch off the ASR and ESP in certain situations (e.g. when
driving with snow chains, in deep snow, or on a loose surface, or
when rocking the car backwards and forwards to free it from mud)
press the button for longer than 3 seconds. The ESP warning
lamp will light up and the message ESP switched off will appear in
the driver information system display. You should only use this
feature if your driving ability and traffic conditions allow you to do
so safely.
Switching on the ESP/traction control system (ASR)
To activate the ASR/ESP, press the button again.
Overheating of the brakes
To prevent the disc brake of a braked wheel from overheating, the
EDL cuts out automatically on the wheel in question if subjected to
excessive loads. The car remains operational and will behave in the
same way as a car without EDL.
The EDL will switch on again automatically when the brake has
cooled down.
WARNING
•
The grip provided by the ESP, ABS, EDL and ASR systems is still
subject to the physical limits of adhesion. Always bear this in
mind, especially on wet or slippery roads. If you notice the
systems cutting in, you should reduce your speed immediately to
suit the road and traffic conditions. Do not let the extra safety
features tempt you into taking any risks when driving – this can
cause accidents.
•
Please remember that the accident risk always increases if you
drive too fast, especially in corners or on a slippery road, or if you
follow too close behind the vehicle in front of you. Please bear in
mind that even ESP, ABS, EDL and ASR cannot compensate for the
increased accident risk.
•
When accelerating on a uniformly slippery surface (for instance
all four wheels on ice or snow), press the accelerator gradually and
carefully. The driven wheels may otherwise start to spin (in spite
of the EDL), which would impair the car's stability and could lead
to an accident.
•
Please note that, when the traction control system (ASR) or
ASR/ESP is switched off, the driven wheels may start to spin,
causing the vehicle to lose grip, in particular on slippery or wet
roads - danger of skidding!Note
•
In the event of a malfunction in the rear spoiler system or in the
Audi magnetic ride, it may not be possible to switch off the traction
control system (ASR) or ASR/ESP, or the ASR/ESP may be reactivated
automatically from the deactivated status.
•
If a malfunction should occur in the EDL, this is indicated by a
warning lamp ⇒page 19.
•
Some racing circuits (e.g. with banked curves) can affect the
behaviour of the ESP.
ESP
ESP
WARNING (continued)
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Checking and topping up fluids157
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Engine oilGeneral notesWe recommend that you have the oil change carried out by an
Audi R8 dealership or qualified workshop according to the intervals
stated in the Service Schedule or according to the service interval
display in the instrument cluster.
Whether your vehicle is serviced at flexible service intervals or fixed
service intervals is shown in the Service Schedule.
The correct oil specifications for your engine are listed in the Te c h -
nical data section ⇒page 198, “Performance, weights and dimen-
sions”.
Check that the specifications quoted (VW standards) appear on the
container either singly or in combination with other specifications.
Flexible service intervals (LongLife Service*)
Special engine oils ⇒page 198, “Performance, weights and dimen-
sions” have been developed as part of the Audi LongLife Service
(⇒“Service Schedule”).
This type of oil must be used if you intend to take advantage of the
extended maintenance intervals allowed by Audi's LongLife Service.•
Do not mix the LongLife oil with oil intended for fixed service
intervals, as the requirements for the extended service intervals are
then no longer guaranteed.
•
In exceptional circumstances, if the engine oil level is too low
⇒page 157 and you cannot obtain the specified LongLife oil, you
can put in a small quantity of oil for fixed service intervals -
⇒page 198, “Performance, weights and dimensions”. This should
not be done more than once and no more than 0.5 litres should be
used.Fixed service intervals (Inspection Service*)
If you do not take advantage of the LongLife service for your car, you
can use the oils for fixed service intervals - ⇒page 198, “Perform-
ance, weights and dimensions”. In this case, your car must be serv-
iced after a fixed interval of 1 year / 15,000 km (10,000 miles) – see
Service Schedule.
•
In exceptional circumstances, if the engine oil level is too low
⇒page 157 and you cannot obtain the oil specified for your vehicle,
you can put in a small quantity of oil conforming to the specification
ACEA A2 or ACEA A3. This should not be done more than once and
no more than 0.5 litres should be used.
Checking the oil level
Fig. 117 Instrument
cluster: Engine oil
temperature displayFig. 118 Markings on
oil dipstick
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Wheels and tyres 172Remove wheel covers (if fitted) and trim rings before attaching
snow chains. For safety reasons cover caps must then be fitted over
the wheel bolts. These are available from Audi R8 dealers.
Remove the chains when roads are free of snow. Otherwise they will
impair handling, damage the tyres and wear out very quickly.
Four-wheel drive: Where snow chains are compulsory on certain
roads, this normally also applies to cars with four-wheel drive. Snow
chains may only be fitted to the rear wheels (also on vehicles with
four-wheel drive).Tyre pressure monitoring systemApplies to vehicles: with tyre pressure monitoring systemIntroduction
The tyre pressure monitoring system keeps a check on the
inflation pressures of the four road wheels while you are
driving.The system warns the driver in the event of a loss of pressure by
means of symbols and messages in the instrument cluster display.
The system employs sensors on the wheels. The radio signals from
these sensors are transmitted to the tyre pressure monitoring
system.
Please bear in mind that the tyre inflation pressure is also influ-
enced by the temperature of the tyre. For every 10°C increase in the
tyre temperature the pressure will normally increase by about
0.1 bar. The tyre heats up while the vehicle is being driven and the
tyre pressure will rise accordingly. For this reason, you should only
adjust the tyre pressures when they are cold (i.e. approximately at
ambient temperature).
To ensure that the tyre pressure monitoring system works reliably,
you should check and, if necessary, adjust the tyre pressures at
regular intervals.The tyre pressures recommended for your vehicle are given on the
sticker attached to the driver's door pillar.
Initialising the tyre pressure monitoring system
The inflation pressures for two sets of wheels (e.g. with winter and
summer tyres) are stored on your vehicle. You can change between
these two sets of wheels any number of times without re-initialising
the system.
The tyre pressure monitoring system must be re-initialised by your
Audi R8 dealer if a new set of wheels is used or the electronic
sensors are renewed.
Warning lamp
lit
If the tyre pressure is more than 0.5 bar below the reference value,
the display will show the tyre symbol
with a corresponding
message, such as Tyre pressures too low ⇒.
WARNING
•
If the warning lamp
lights up you must slow down immedi-
ately and avoid any severe braking or steering manoeuvres. As
soon as you can do so safely, stop and check the tyres and the tyre
pressures.
•
Never re-adjust the tyre inflation pressure when the tyre is hot.
This can cause serious damage to the tyre or even a blow-out,
which could result in an accident.
•
Under-inflated tyres flex more and can overheat at continuous
high speeds. This can cause tread separation and tyre blow-out,
which could result in an accident.For the sake of the environment
Under-inflated tyres lead to increased fuel consumption and tyre
wear.
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