sensor AUDI R8 2007 User Guide

Lights and vision 64•
The automatic anti-dazzle function will only work properly if
there are no objects preventing light from reaching the interior
mirror.
•
Do not attach any stickers to the windscreen in front of the
sensors, as this would interfere with the operation of the automatic
headlights and the automatic anti-dazzle function for the mirror.
Exterior mirrors
The exterior mirrors are adjusted electrically.Adjusting exterior mirrors
– Turn the adjuster knob to position (left exterior mirror)
or position (right exterior mirror) ⇒fig. 59.
– Move the knob as required to adjust the exterior mirror
for a good rearward view.
Heated mirrors
– Turn the knob to position .
Retracting both exterior mirrors*
– Turn the knob to position .
The mirrors are heated depending on the outside temperature until
the ignition is switched off, even if the knob is no longer in position
.
It may be advisable to retract* the exterior mirrors to protect them
when parking or when driving through tight spaces.
Caution
•
Convex or wide-angle exterior mirrors give a larger field of vision.
However, they also make objects appear further away than they
actually are. For this reason, you should not rely on these mirrors for
judging the distance of vehicles behind.
•
If one of the mirror housings is knocked out of position (e.g.
when parking), the mirrors must first be fully retracted with the elec-
tric control. Do not readjust the mirror housing by hand, as this will
interfere with the mirror adjuster function.Note
If the electrical adjustment should ever fail to operate, the mirrors
can be adjusted by hand by lightly pressing the edge of the mirror
glass.Applies to vehicles: with automatic anti-dazzle adjustment for exterior mirrorsAutomatic anti-dazzle adjustment for exterior mirrorsThe exterior mirrors darken together with the automatically
adjusting interior mirror. When the ignition is on, the mirrors will
darken automatically according to the amount of light received (for
example from the headlights of a vehicle behind).
When the interior lights are switched on, or when reverse gear is
engaged, the mirrors revert to their original (i.e. not darkened)
condition.
Fig. 59 Detail of the
armrest: Adjuster knob
AL
AR
AAAB
AA
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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
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Driving 86Parking
If the parking manoeuvre involves shunting backwards and
forwards, the warning sound will be switched off temporarily while
you change gear. The warning beeps will start again as soon as the
vehicle comes closer to an obstacle.
Possible faults
If you hear a long beep when you engage reverse gear (or when you
activate the system using the switch) and the diode in the switch
starts flashing, there is a fault in the system. The long warning beep
is given just once to indicate the fault. If you try activating the
parking aid again, the warning beep will not sound and fault is only
indicated by the flashing diode. This also applies if you switch the
ignition off and then on again: the long warning beep will only
sound the first time you try activating the parking aid. Have the fault
rectified.
If there is a fault in the system there will be no confirming beep
when you activate the parking aid.
To ensure that the acoustic parking aid works properly, the sensors
must be kept clean and free of ice.
WARNING
•
The sensors have blind spots in which obstacles are not regis-
tered. It is particularly important to ensure that there are no small
children or animals near the vehicle when reversing, as the
sensors may not always be able to detect them.
•
The parking aid cannot replace the full concentration of the
driver. The driver is always responsible for safety during parking
and other manoeuvres.Caution
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. Certain kinds of obstacles (such as wire fences, chains, thin painted posts or trailer draw bars,
etc) may not always be detected by the system, so take care not to
damage the vehicle in such cases.
Note
Your vehicle has low ground clearance. To help you prevent damage
to the vehicle, warning beeps will sound when you approach a steep
slope (e.g. in a car park or garage).Cruise control systemApplies to vehicles: with cruise control systemIntroduction
The cruise control system allows you to maintain a
constant speed.The cruise control system allows you to maintain any desired
constant cruising speed at speeds above about 30 km/h. Of course,
this is subject to power output and braking ability of the engine.
This helps to reduce fatigue, especially on long journeys.
The indicator lamp
 in the instrument cluster lights up when the
cruise control system is operating.
The cruise control system is automatically deactivated immediately
by
•
pressing the brake pedal.
•
pressing the clutch pedal.
WARNING
For safety reasons the cruise control system should not be used in
dense traffic or poor road conditions (such as slippery surfaces,
heavy rain, loose grit or gravel) – this could cause an accident.
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Airbag system115
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Airbag systemDescription of airbag systemGeneral notes on airbag system
The airbag is an integral part of the car's passive safety
system.In conjunction with the three-point seat belts, the airbag system
gives the front occupants additional protection for the head and
chest in the event of a severe frontal collision.
In a side collision the side airbags reduce the risk of injury to the
areas of the body facing the impact ⇒.
In addition to their normal function of protecting the occupants in a
collision, the seat belts also hold them in a position where the
airbags can inflate properly and provide maximum protection.
The airbag system will only work with the ignition on. The airbag
system is monitored electronically; the airbag warning lamp indi-
cates whether the system is functioning properly.
The main parts of the airbag system are:•
the electronic monitoring system (control unit and sensors),
•
the two front airbags,
•
The two side airbags,
•
The airbag warning lamp in the instrument cluster.
There is a fault in the airbag system if the warning
lamp
•
does not come on when the ignition is switched on,
•
does not go out about 3 seconds after the ignition is switched
on,
•
goes out and then comes on again after the ignition is switched
on,
•
comes on or flickers while the car is moving.
WARNING
•
The airbags are not a substitute for the seat belts; they are an
integral part of the car's overall passive safety system. The airbags
can only offer effective protection if the occupants are wearing
their seat belts. For this reason it is very important to wear the
seat belts at all times ⇒page 109, “Why is it so important to use
seat belts?”.
•
The seat belts and airbags can only provide maximum protec-
tion if the occupants are seated correctly ⇒page 67, “Seats and
storage”.
•
If you do not wear a seat belt, if you lean forward, or are not
seated correctly while the vehicle is in motion, you are at greater
risk of injury should the airbag system be triggered in an accident.
•
Components of the airbag system are located in various parts
of the vehicle. If repairs to other vehicle components make it
necessary to perform work on the airbag system or to remove or
install parts of the airbag system, this may cause damage to the
airbag system. As a result, the airbags may not inflate correctly or
may not be triggered at all in an accident situation.
•
If a fault should occur in the airbag system, have the system
checked immediately by a qualified workshop. Otherwise the
system may fail to trigger in an accident.
•
Do not attempt to modify components of the airbag system in
any way.
•
Never make any alterations to the front bumper or the body.
•
The airbag system can only be activated once; if the airbag has
been triggered, the system must be replaced. Should the airbag
system or airbag modules have to be replaced, the qualified work-
shop carrying out the replacement will document all details in the
appropriate section of the Service Schedule.
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Airbag system 116•
If you sell the vehicle, please remember to pass on the
complete Service Wallet to the new owner. If the front passenger's
airbag has been deactivated, it is important that the new owner is
also given the relevant documents.
•
The relevant safety requirements must be observed when the
vehicle or components of the airbag or belt tensioner systems are
scrapped.
•
In an accident in which one or more airbags are triggered the
alternator and the starter are - for safety reasons - both discon-
nected from the battery via a pyrotechnic circuit breaker.
−Any repairs to the pyrotechnic circuit breaker must always
be performed by a qualified workshop (accident risk).
−The relevant safety requirements must be observed when
the vehicle or the circuit breaker are scrapped.
When are the airbags triggered?
The airbag system is triggered in collisions with a severe
impact.The airbag system is designed so that the airbags for the driver and
front passenger are triggered in a severe frontal collision.
In severe side collisions the side airbags are triggered on the impact
side of the vehicle.
In certain types of accident the front airbags and the side airbags
may be triggered together.
The airbag system is not triggered in minor frontal or side collisions,
or in rear collisions or if the car overturns. In these situations the
occupants are protected by wearing the seat belts.
Factors determining the triggering response
It is not possible to define the exact triggering response of the
airbag system in all possible situations, since the circumstances in different types of accident will vary considerably. Important factors
include, for example, the nature (hard or soft) of the object which
the car hits, the angle of impact, vehicle speed and so on.
Whether the airbags are triggered depends primarily on the vehicle
deceleration rate resulting from the collision. By processing the
signals from the sensors located in the vehicle, the electronic
control unit is immediately able to evaluate the severity of the colli-
sion and activate the restraint systems accordingly. If the decelera-
tion rate is below the predefined reference value in the control unit
the airbags will not be triggered, even though the accident may
cause extensive damage to the car.
Note
The airbag releases a fine dust when it inflates. This is quite normal
and does not mean there is a fire in the vehicle.Front airbagsDescription of front airbags
The airbag system is not a substitute for the seat belts.
WARNING (continued)
Fig. 95 Driver's airbag
in steering wheel
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Airbag system119
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data collision ⇒ in “Important safety notes on the side airbag system”
on page 119.
In a side collision the side airbags reduce the risk of injury to the
areas of the body facing the impact.
How the side airbags work
When fully inflated, the side airbags reduce the risk of
head or chest injury.In certain types of side collisions the side airbag is triggered on the
impact side of the vehicle ⇒fig. 100.
In certain types of accident the front airbags and the side airbags
may be triggered together.
When the system is triggered, the airbag is filled with propellant
gas.
In order to provide the desired extra protection in an accident, the
airbags have to inflate extremely rapidly (within fractions of a
second). The airbag releases a fine dust when it inflates. This is quite
normal and does not mean there is a fire in the vehicle.
The fully deployed airbags cushion the impact of the occupants and
help to reduce the risk of injury to the head and upper part of the
body on the side facing the door.
Important safety notes on the side airbag system
There are a number of safety points concerning the airbag
system which you should remember. This will help to
reduce the risk of injury in an accident.
WARNING
•
If you do not wear a seat belt, if you lean forward, or are not
seated correctly while the vehicle is in motion, you are at greater
risk of injury should the side airbag system be triggered in an acci-
dent.
•
If children are not seated correctly, they are at greater risk of
injury in an accident. This is particularly the case if the child is
travelling on the front passenger's seat and the airbag system is
triggered in an accident. This could result in serious or potentially
fatal injury ⇒page 122, “Child safety”.
•
It is also important not to attach any accessories (such as cup
holders) to the doors. This would impair the protection offered by
the side airbags.
•
The sensors for the airbags are located in the front doors. You
must therefore not make any modifications to the doors or door
trim (e.g. retrofitting loudspeakers), as this could impair the func-
tion of the side airbags. Any damage to the front doors could lead
to faults in the system. Repairs or any other work on the front
doors must therefore always be carried out by a qualified work-
shop.
•
Do not apply excessive force to the sides of the backrests (such
as hard knocks or kicks), as this could damage parts of the system.
The side airbags could then fail to operate when required.
•
If you intend to fit protective covers over the seats, these must
be of the specific type approved for use on Audi seats with side
airbags. Conventional seat covers would obstruct the side airbag
when it inflates out of the backrest, and seriously reduce the
airbag's effectiveness.
Fig. 100 Side airbag in
inflated condition
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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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Wheels and tyres173
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
Note
•
Responsibility for ensuring that the tyres are correctly inflated
remains with the driver; the system can only provide assistance.
•
Only adjust the inflation pressure of the tyres when they are at
approximately ambient temperature.
•
The sensors and valves do not have to be detached or changed
round when fitting new tyres. Only the valve core needs to be
replaced, and if necessary the valve and the electronic components
in the wheel.
•
After using the Tyre Mobility System* the tyre pressure moni-
toring system may malfunction. The sensor for the tyre pressure
monitoring system must therefore be renewed by a qualified
workshop.
Applies to vehicles: with tyre pressure monitoring systemMalfunctionsIf the tyre pressure monitoring system is inoperative, the tyre
symbol or “TPMS” will appear on the display. This can have various
causes:•
One of the wheel sensors or other related components may not
be working.
•
Snow chains can interfere with the signals emitted by the
sensors so that the system cannot function properly.
•
The tyre pressure monitoring system may be inoperative due to
radio interference.
•
Radio systems operating on the same frequency, such as radio
headphones or two-way radios inside the vehicle, produce strong
electromagnetic fields which can cause temporary interference.
•
If the fault persists, take the vehicle to a qualified workshop.
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Fuses and bulbs191
Controls
Safety
Driving tips
General maintenance
Self-help
Technical data
The fuse box is located behind the foot rest in the
passenger's footwell ⇒page 190, fig. 134.Row of the fuse box is not used.Row
No
Electrical equipment
amps
1
Mobile phone adapter
5
2
Heated washer jets
5
3
Parking aid (APS)
10
4
Vacant
--
5
Diagnostic interface, light switch,
Airbag OFF warning lamp, selector lever
10
6
Network gateway, diagnostic interface
5
7
Vacant
--
8
Anti-dazzle interior mirror, garage door
opener
10
9
Washer pump
15
10
ESP button
10
11
Pressure sensor, air conditioner
5
12
Airbag
5
Fuse row -B-
AAAB
Row
No
Electrical equipment
amps
1
Radiator fan (1)
40
2
Radiator fan (2)
40
3
Exterior lighting
40
4
Exterior lighting
40
5
Vacant
--
6
Blower control
40
Fuse row -C-Row
No
Electrical equipment
amps
1
Reversing camera
5
2
Tyre pressure monitoring
10
3
Parking aid (APS)
5
4
Phone pre-installation, compensor
5
5
Instrument cluster
5
6
Network gateway
5
7
Switches for steering column
5
8
Diagnostic interface, brake pedal switch,
selector lever
10
9
Rain sensor/light sensor
5
10
Interior lighting
5
11
Sound amplifier
30
12
Radio
20
Fuse row -D-
ACAD
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Fuses and bulbs 192
Some of the items listed are only fitted on certain models or are
optional extras.
The electric windows and electric seat adjusters are protected by
circuit breakers. These reset automatically after a few seconds
when the overload (caused for example by frozen windows) has
been corrected.
Note
Please note that the above list, while correct at the time of printing,
is subject to alterations.
Row
No
Electrical equipment
amps
1
Vacant
--
2
Vacant
--
3
Auxiliary water pump
10
4
Optional equipment
5
5
Power supply, terminal 15, starter
30
6
Pump for brake servo
15
7
Horn
20
8
Wiper motor
30
9
Wiper motor
30
10
Headlight washer system
30
11
Electrically heated rear window
30
12
Electrical sockets and cigarette lighter
20
Fuse row -E-
AE
Row
No
Electrical equipment
amps
1
Electronic stabilisation program
10
2
Electronic stabilisation program
25
3
Vacant
--
4
Vacant
--
5
Control unit for convenience electronics
20
6
Control unit for convenience electronics
20
7
Level sensor (ASS), anti-theft alarm
5
8
Air conditioner
10
9
Seat heating
25
10
Lumbar support
10
11
Electric windows
30
12
Control unit for doors
10
Fuse row -F-
AF
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