sensor AUDI Q7 2009 Owner´s Manual

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Intelligent technology
Notice about data recorded by
vehicle control modu les
Your vehicle is not equipped with an Event Data Recorder (EDR),
installed by some manufacturers for the express purpose of
capturing data for retrieval after an accident or crash event . EDR's
are sometimes called "crash recorders" .
Some state laws restrict the retrieva l or downloading of data stored
by EDR's that were insta lled in a vehicle for the express purpose of
retrieving data after an accident or crash event without the owner's
consent.
Although your vehicle is not equipped with an EDR, it is equipped
with a number of electronic control modules for various vehicle systems such as, for example, engine function, emission control, as
well as for the airbags and safety belts.
These electronic control modules also record vehicle-related data during norma l vehicle operation for diagnost ic and repair purposes .
The recording capacity of the electronic control modules is limited
to data (no sound is recorded) and only a small amount of data is
actually recorded over a very limited period of time and stored when
a system fault or other condition is sensed by a control unit. Some
of the data then stored may relate to vehicle speed, direction, braking as well as restraint system use and performance in the
event of a crash or other condition . Stored data can only be read and
down loaded with special equipment .•
Electron ic Stabilizat ion Program (ESP)
General =nformation
The ESP improves the vehicle stability.
Fi g. 2 75 C ente r
co nso le w it h ES P
swi tch
ESP is designed to he lp you maintain vehic le control in situations
where the car approaches the limits of "grip", especia lly when
accelerating and cornering. ESP reduces the risk of skidding and
improves stabil ity under all road conditions .
T he system operates across the entire speed range in combination
with the ABS system. If the Anti-Lock Brake System (ABS) malfunc­
tions, the ESP wil l also shut down .
How th e sys te m w ork s
The Anti -Lock Brake System (ABS) , Electronic Differential Lock (EDU
and the Anti-Slip Regulation System (ASR) are integrated in the e lec­
tronic stabi lization program . In addition to the data provided by
these functions, the ESP control unit requires additional measure­ ment data provided by high performance sensors . The rotational
speed of the vehic le about its vertical axis, vehicle acce leration in
the fore-and-aft and lateral directions, the brake pressure and the steering angle are al l measured .

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& WARNING (continued)
tendency to spin and the vehicle may break away -danger of skid­
ding!
• Stability is limited in the ESP offroad mode. •
Electronic differential lock (EDL)
The electronic differential lock monitors the rotational
speed of the drive wheels.
General notes
The electronic differential lock (EDU helps the car to start moving,
accelerate and climb a gradient on surfaces providing poor or
almost no grip . Without EDL, this would be difficult, if not impos­
sible.
How the system works
The EDL operates automatically. It monitors the rotational speed of
wheels with the help of the ABS sensors=> page 292. If a noticeable
slip is detected at the wheels (e.g. on slippery ground on one side),
the spinning wheels are braked and power is transferred to the
other wheels. This is done up to a speed of about 60 mph (100 km/h).
Noises from the brake system signal that wheel spin is being
controlled.
Driving off
When driving off, always be sure to keep road conditions in mind as
you accelerate. If one drive wheel spins because it is on a surface
with less grip, apply plenty of throttle until the car starts to move.
Overheating of brakes
To prevent the disc brake of the braked wheel from overheating if
subjected to excessive loads on this wheel, the EDL cuts out tempo­
rarily. The vehicle remains operational and behaves in the same way
as a vehicle without EDL. As soon as the brake has cooled down, EDL switches on again auto­
matically.
& WARNING
• When accelerating on slippery surfaces, such as on ice or snow,
always be careful when depressing the accelerator pedal . Even
with the EDL working, the drive wheels can spin and reduce your ability to control your car. Risk of crash!
• The increased safety afforded by EDL does not mean that you
can take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
[ i] Tips
If a fault occurs in the ABS, the EDL is also not functioning. This is
indicated by the ABS warning light=> page 22. •
Anti-Slip Regulat ion System (ASR)
The Anti-Slip Regulation System prevents the driven
wheels from spinning when the car is accelerating.
General notes
The Anti -Slip Regulation System (ASR) is integrated in the electronic
stabilization program (ESP) . When the vehicle starts up and acceler­
ates, the wheels are prevented from spinning by adjusting the
engine power to match the amount of grip available from the road
surface.
How the system works
ASR performs automatically, i.e. without the driver's intervention.
With the aid of the ABS sensors=> page 292, ASR monitors the
speed of the driven wheels. If the wheels start to spin, engine torque
is reduced automatically until the tires find enough grip to lock onto
the road surface. The system is active across the entire speed range . ..,

& WARNING (continued)
• On wet road surfaces, be careful not to drive too fast because
the front wheels could begin to slide on top of the water (aqua ­
planing) . If this should occur , you will have no warning from a
sudden increase in engine speed as with a front -wheel drive
vehicle. Always drive at speeds which are suited to the road condi­
tions -risk of crash. •
Energy management
Starting ability is optimized
Energy management controls the distribution of electrical
energy and thus optimizes the availability of electrical
energy for starting the engine.
If a vehicle with a conventional energy system is not driven for a
long period of time, the battery is discharged by idling current
consumers (e.g. immobilizer). In certain circumstances it can result
in there being insufficient energy available to start the engine.
Intelligent energy management in your vehicle handles the distribu ­
tion of electrical energy. Starting ability is markedly improved and
the life of the battery is extended.
Basically , energy management consists of
battery diagnosis, idling
current management
and dynamic energy management .
Battery diagnosis
Battery diagnosis continuously determines the state of the battery.
Sensors determine battery voltage, battery current and battery
temperature. This determines the current state of charge and the
power of the battery.
Controls and equip­ ment Safety first Vehicle operation
Intelligent technology
Idling current management
Idling
current management reduces energy consumption while the
vehicle is standing. With the ignition switched off, it controls the
energy supply to the various electrical components. Data from
battery diagnosis is considered.
Depending on the battery's state of charge, individual consumers
are gradually turned off to prevent excessive discharge of the
battery and thus maintain starting capability.
Dynamic energy management
While the vehicle is being driven, dynamic energy management
distributes the energy generated according to the needs of the indi­
vidual components. It regulates consumption, so that more elec­
trical energy is not being used than is being generated and ensures
an optimal state of charge for the battery.
[ i] Tips
• But even energy management cannot negate the limits of
physics. Consider that the power and life of a battery are limited.
• I f starting ability is threatened, you are informed by a warning
~ page 296, "Driver notification in the instrument cluster
display". •
What you should know
-----------------
The highest priority is given to maintaining starting capa-
bility.
Th e battery is severely taxed in short -distance driving, in city traffic
and during the cold time of year. Abundant electrical energy is
required, but only a litt le is generated. It is also critical if the engine
is not running and electrical components are turned on. In this
instance energy is being consumed but none is being generated.
It is in precisely these situations that you will notice energy manage ­
ment actively regulating the distribution of energy.
•
Vehicle care Do-it-yourself service Technical data

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•
- Read the engine coolant level in the open coolant expan­
sion tank :::::>
page 338, fig. 287. With a cold engine, the
coolant level should be between the "min" and "max"
markings. When the engine is warm, the level may be
slightly above the "max" marking.
The location of the coolant expansion tank can be seen in the
engine compartment illustration~
page 332.
To obtain an accurate reading, the engine must be switched off.
The expansion tank in your vehicle is equipped with an electric
coolant level sensor.
When the coolant level is too low, the warning light in the Auto­
Check System~
page 33will blink until you add coolant and the
level has been restored to normal. Even though there is an electric
coolant level sensor, we still recommend you check the coolant level
from time to time .
Coolant loss
Coolant loss may indicate a leak in the cooling system . In the event
of coolant loss, the cooling system should be inspected immedi­
ately by your authorized Audi dealer . It is not enough merely to add
coolant.
In a
sealed system, losses can occur only if the boiling point of the
coolant is exceeded as a result of overheating.
& WARNING
The cooling system is under pressure and can get very hot. Reduce
the risk of scalding from hot coolant by following these steps.
• Turn off the engine and allow it to cool down.
• Protect your face, hands and arms from escaping fluid and
steam by covering the cap with a large, thick rag.
& WARNING (continued)
• Turn the cap slowly and very carefully in a counter-clockwise
direction while applying light, downward pressure on the top of
the cap .
• To avoid being burned, do not spill antifreeze or coolant on the
exhaust system or hot engine parts. Under certain conditions, the
ethylene glycol in engine coolant can catch fire.
0 Note
Do not add any type of radiator leak sealant to your vehicle's engine
coolant. Adding radiator repair fluid may adversely affect the func ­
tion and performance of your cooling system and could result in
damage not covered by your New Vehicle Limited Warranty. •
Adding coolant
Be very careful when adding engine coolant.
Before you check anything in the engine compartment,
always read and heed all WARNINGS:::::> & in "Working in
the engine compartment" on
page 331.
- Turn off the engine.
Let the engine cool down.
Place a thick rag over the coolant expansion tank
=:> page 338, fig. 287 and carefully twist the cap counter­
clockwise :::::>& .
Add coolant.
- Twist the cap on again
tightly.
Replacement engine coolant must conform to exact specifications
~ page 337, "Coolant". Even in an emergency, if coolant additive .,,
Vehicle care I t •

__________________________________________________ T_ ir_e_ s_ a_ n_d _ w_ h_ e_ e_l_s __ _
•
U.S. DOT Tire Identification Number (TIN) and tire
manufacture date
This is the tire's "serial number". It begins with the letters "DOT"
and indicates that the tire meets all federal standards . The next two
numbers or letters indicate the plant where it was manufactured,
and the last four numbers represent the week and year of manufac ­
ture . For example, the numbers 2208 mean that the tire was
produced in the 22th week of 2008. The other numbers are
marketing codes that may or may not be used by the tire manufac­
turer. This information is used to contact consumers if a tire defect
requires a recall.
Tire ply composition and materials used
The number of plies indicates the number of layers of rubber-coated
fabric in the tire. In general, the greater the number of plies, the
more weight a tire can support. Tire manufacturers also must indi­
cate the materials in the tire, which include steel, nylon, polyester,
and others.
Maximum Load Rating
This number indicates the maximum load in kilograms and pounds
that can be carried by the tire.
Tire quality grading for treadwear, traction, and
temperature resistance
Tread wear, traction and temperature grades~ page 363.
Maximum Permissible Inflation Pressure
This number is the greatest amount of air pressure that should ever
be put in the tire under normal driving conditions.
Replacing tires or rims on vehicles equipped with tire
pressure monitoring system
The wheels on your vehicle are equipped with a sensor which
constantly monitors the air pressure inside the tire, and then trans ­
mits this information to the tire pressure monitoring system. If you
are going to replace the wheel rims on your vehicle, make sure the new rims also have these sensors
. The sensors must be compatible
with the tire pressure monitoring system on your vehicle.
If you install rims, which do not have the sensors, or have sensors
which are not compatible, then the tire pressure monitoring system
will not work properly. In this case, the tire pressure monitoring
system would not be able to monitor the tire pressure or warn you
if it is necessary.
• The battery inside of the tire pressure sensor has a limited
service life.
• Always drive with the valve stem caps securely mounted. We
recommend using factory installed valve stem caps. Ask your autho­
rized Audi dealer to replace lost valve stem caps .
The installation of replacement tires with steel cord body plies in
the tire sidewall may cause malfunction of the tire pressure moni­
toring system, and is not recommended (cord material information
in molded on the tire sidewall).
Always check your tire pressure monitoring system indicator after replacing one or more tires on your vehicle. If the tire pressure
monitoring system indicator flashes, or is on, your system is not
working properly. Your replacement tire might be incompatible with
your tire pressure monitoring system, or some component of the
tire pressure monitoring system may be damaged.
& WARNING
• Using incorrect or unmatched tires and/ or wheels or improper
tire and wheel combinations can lead to loss of control, collision and serious personal injury.
• Always use tires, rims and wheel bolts that meet the specifica­
tions of original factory-installed tires or other combinations that
have been specifically approved by the vehicle manufacturer .
• Tires age even if they are not being used and can fail suddenly,
especially at high speeds. Tires that are more than 6 years old can
only be used in an emergency and then with special care and at
lower speeds . .,.
Vehicle care
I t •

_L_T~ i~ r ~e ~s '..... a ~ n~d ~ w~ h~e~ e::. l !.:s ~ ---------------------------------------------
& WARN ING (continued )
• Never mount used tire s on your vehicle if you are not sure of
their "pre vious history. " Old used tire s may have been damaged
even though the damage cannot be seen that c an lead to sudden
tire f ailure and los s of vehicle control .
• All four wheels must be fitted with radial tires of the same type,
s ize (rolling circumference ) and the same tread pattern. Driv ing
with different tires reduces veh icle handling and can lead to a loss
of cont rol.
• If the spare tire is not the same as the tires that are mounted
on the vehicle • for e xample with winter tires · only use the spare
tire for a short period of time and drive with extra care . Refit the
normal road wheel a s soon as safely possible.
• Never drive faster than the maximum speed for whi ch the tires
on your vehicle are rated because tires that are driven faster than
their rated speed can fail suddenly .
• Overloading tires cause heat build -up , sudden tire failure,
including a blowout and sudden deflation and lo ss of control.
• Temperature grades apply to tires that are properly inflated and
not over or underinflated.
• Fo r te chni cal reasons it is not always possible to use wheels
from other vehicles -in some cases not even wheels from the
same vehi cle model .
• If you install wheel trim di scs on the vehicle wheels , make sure
that the air flow to the brakes is not blo cked . Redu ced airflow to
the brakes can them to overheat , increasing stopping distances
and causing a collision .
• Run flat tires may only be used on vehicle s that were equipped
with them at the factory . The vehicle must have a chassis designed
for run flat tires and a factory -installed tire pressure monitoring
system that indi cates a loss of t ire pres sure . In corre ct u se of run
flat tires can lead to vehicle damage or accident s. Check with an
authorized Aud i dealer or tire specialist to see if your vehicle can
& WAR NING (continued )
be equipped with run flat tires . If run flat tires are used , they must
be installed on all four wheels . Mixing tire types is not permitted .
0 Note
• For tec hnical reas ons, it is not gen erally poss ible to use t he
whee l rims from other vehicles . T his can ho ld true for whee ls of the
sa me v ehicle type.
• I f the spare tire is different from the tires that you have mounted
o n yo ur vehicle ( for example wi nter tires or wide pro file tires), then
use the spare tire for a short period of time on ly and drive with extra
ca re. Replac e th e fl at t ire wi th the tire m atchi ng t he othe rs on you r
vehic le as soon as possib le .
• I f you should put different w heels and tires o n yo ur ve hic le (e. g.
winter wheels and t ires), you must be certain that the wheels and
t ires a re c omp atible with the tire pressure moni tor in g sys tem.
O therwise the system will register a malfunction and a fau lt
m es sage w ill be displayed . For more info rmation, c ontac t yo ur
authorized Audi dea ler.
0 Note
• When insta lling new tires, b e care fu l not to damage the va lv e s or
t ire p ressu re mon itoring syste m sensors .
• N ever drive without the valve stem cap . The va lves could get
damaged.
• I f the sensors must be replaced, then the valve must also be
r e pl ace d at t he same time .
'£> For the sake of the environment
Dispose o f old tires i n acco rdance wit h the local re qu ire ment s.•

_L_T~i~r~e~s'.....a~n~d~w~h~e~e::.l!.:s ~---------------------------------------------
your vehicle with correctly fitted winter tires or a ll- season tires,
w hen winter ro ad condit ions are e xpected. T his also i mproves the
vehic le 's brak ing performance and reduces stopp ing distances.
Summer tires provide less grip on ice and snow .
Winter tires (s now ti res) mus t always be fitted on a ll four whe els .
Compatible tire pressure monitoring sensors must be installed on
all f our winte r tires fo r th e tir e pres su re m onitori ng sy stem to f unc ­
tion properly=>
page 367 .
Ask your authorize d Audi dealer or qualified worksho p for permitted
winter tire sizes. Use on ly rad ial winter t ires .
Winter tires lose their effectiveness when the tread is worn down to a depth of 0 .157 inc h (4 m m).
O nl y dr ive w ith w in ter tires unde r winter co nditio ns. Su mmer tires
handle bette r when there is no snow o r ice on the roads and the
t emp eratur e i s abo ve 45 °F (7 °C) .
If you have a f la t t ire, see not es on spar e wh eel=> page 359 .
Please a lways reme mber that winte r tir e s may have a l owe r speed
rat ing t han th e tire s orig inal ly in sta lled o n your v ehic le at t he ti me
it wa s manufactured . Please see=>
page 3 60, "S pee d rating (letter
co de) " f or a list ing o f the spe ed rating letter c odes and t he
maximum speed at which the ti res can be driven .
T h e sp eed rating lette r co de( ::::>
page 350) is on t he sid e w all of the
tire=>
page 3 59.
& WARNING
Winter tires have maximum speed limits that may be lower than
your vehicle's maximum speed . Always know the maximum speed
before driving off . Never dr ive faster than the speed permitted for
your specific winter tires. This will cause damage to the tires
leading to an accident and serious personal injury to you and your
passengers .
& WARNING
Driving faster than the maximum speed for whi ch the winter tires
on your vehicle were designed can cause tire failure including a
blowout and sudden deflation , loss of control , crashes and serious
personal injuries. Have worn or damaged tires replaced immedi­
ately.
• Winter tires have maximum speed rating that may be lower
than your vehicle's maximum speed .
• Never drive faster than the speed for which the winter or other
tires installed on your vehicle are rated.
& WARNING
Always adjust your driving to the road and traffic conditions .
Never let the good acceleration of the winter tires and all -wheel
dr ive tempt you into taking extra risks . Always remember :
• When braking , an all -wheel drive vehicle handle s in the same
way as a front drive vehicle .
• Drive carefully and reduce your speed on icy and slippery roads,
even winter tires cannot help under black ice conditions .
~ For the sake of the environment
Use summer tires when weather conditions permit . They are
q uieter, d o not wear as qu ick ly and re duce fue l c on sumption .•
Snow chains
S now c hains may be fitted on ly to t he rear w hee ls, and only to
certain tire sizes. Ask your autho rized A udi dea ler on which tire
s izes sn ow cha ins ca n be used .
T he snow chains must hav e low -prof ile links and must not be thicker
th an 0 .53 in ch (13 .5 mm), inc lu d in g the loc k. .,_

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& WARN ING (continued )
• Always make sure the damaged wheel or even a flat tire and
the jack and tool kit are properly se cured in the luggage compart ­
ment and are not loose in the pa ssenger compartment .
• In an a cc ident or sudden maneuver they could fly forward ,
injuring anyone in the vehicle.
• Always store damaged wheel , ja ck and tools securely in the
luggage compartment . Otherwise , in an accident or sudden
maneuver they could fly forward , cau sing inju ry to passengers in
the vehicle .
0 Note
Do not use commercially available tire sealants. Otherwise, the elec ­
trical components of t he tire pressure monitoring system wi ll no
longer work properly and the sensor for the tire pressure moni ­
t ori ng system wi ll have to be replaced by a qua lified workshop .•

lllftl.,___F_ u_ s_ e_s _ a_n _ d_ b_ u_lb _ s _______________________________________________ _
[ i J Tips
You are well advised to keep a supply of spare fuses in your vehicle .
Fuses with the proper ampere ratings are available at your autho ­
rized Audi dealer. •
Fuse Location, Instrument Panel left
Fig . 309 Fuse panel
layout
Some of the equipment items listed are optional or only available on
certain model configurations .
Note that the following table is accurate at the time of going to
press and is subject to change. In the event of discrepancies, the
label on the inside of the cover always takes precedence.
The power seats are protected by circuit breakers, which automati­
cally reset after a few seconds after the overload has been reme ­
died.
No.
Equipment
Fuse holder (red)
1
2
3
Not used
Not used
Not used
Amps
No. Equipment
4 Tire pressure monitoring system
5 Not used
6 Lumbar support driver's seat
7 Window regulators (left side of vehicle)
8 Door control module (left side of vehicle)
9 Battery energy management
10 Electronic ignition lock,
power steering column adjustment
11 Switch module steering column
12 Intelligent
power module convenience
Fuse holder (brown)
1
2
Not used
Not used
3 Not used
4 Wiper system
5 Rain sensor
6 Horn
7
8
9
Intelligent power module driver
Intelligent power module driver
(lights left side of vehicle)
Intelligent power module driver
(lights right side of vehicle)
10 Instrument cluster
11 Headlight washer system
12 Diagnostic connector
Fuse holder (black) Amps
5
10
35 15
5
30
10 5
30
5
25
30
25 25
10
30
10
-

Fuses and bul bs 11111 ________________________________ ..:....:,:_=-.::..:....:.;.:_.:..:..,_,;__,;____,J
....
No.
1
-
2
3
4
5
6
Eq uipm ent
Headlight electronic system (left side of vehi -
cle)
Adaptive Cruise Control
Not used
Audi lane assis t
Not used
Terminal 15 (interior)
Oil level sensor
8 Diagnostic connector
9 Automatic dipping interior mirror
10 Homelink
1 1 Control module Gateway
12 Headlight range adjustment
Amps
10
5
10
5
5
5
5
5
5
5
Fuse Location , Instrument Panel right
Fi g. 310 F use pane l
l ayo ut
Some of the equipment items listed are optional or only avai lable on
certain model configurations .
•
Note that th e fo llo wi ng ta ble is acc urate a t the time of goi ng to
pre ss and is subject to change. In th e event of di screpan cies, t he
l a b el on the ins ide o f th e cover a lw ays ta ke s prec eden ce.
The power seats are protected by circ uit breakers , which automati ­
ca lly reset af ter a few seconds after the overload has been reme ­
died .
No. Equipm ent
Fu se holder (bla ck )
1 Heated rear seats
2 Automatic transmission
3 Heated front seats
4 E lectronic Stability Program (ESP)
5 Door control module (right side of vehicle)
6 Rear electrical out
lets
7 Lumbar support passenger's seat
8 Cigarette lighter front
9 Front electrical outlets
10 A/C controls
1 1 Electronic Stabilization Prog ram (ESP),
Brake light switch
12 Inte lligent power modu le passenger
Fuse holder (brown )
1
2
3
Headlight electronic system (right side of vehi­
cle)
Ride height adjustment
Telephone package
4 Audi side assist 5 E lectronic Stab ilizat ion Program (ESP)
Vehicle care Do-it-yourself service
Amps
20
5/10
30 20
15
25
10
20
25
10
5
15
1 0
5
5
5
5
-
irechnical data