fuel pressure AUDI Q7 2009 Owner´s Manual

Instruments and warning/indicator lights
gallons (10-12 liters) of fuel left. This message is meant to remind
you to
refuel.
The total tank capacity of your vehicle is listed in~ page 399 .
0 Note
Never run the tank completely dry. An irregular supply of fuel can
cause engine misfiring and fuel could enter the exhaust system. The
catalytic converter could then overheat and be damaged. •
[ CHECK] button
You can perform different functions with this button.
Fig. 5 CHECK button in
the instrument cluster
The [ CHECK I button performs the following functions:
Switching on the clock and odometer
With the ignition turned off, the odometer reading and the digital
clock with date display can be switched on for about 30 seconds by
pressing the !CHECK ] button ~ fig. 5.
Starting the Auto-Check sequence
The Auto-Check system~ page 30 constantly monitors certain indi­
vidual functions and components of the vehicle when the ignition is
turned on and when the vehicle is moving. With the ignition turned on, you can start the "Auto-Check
sequence" by pressing the
I CHECK] button. You can perform an
Auto-Check sequence when the vehicle is stationary and the ignition
is turned on or when the vehicle is moving not faster than 3 mph
(5 km/hl.
The number of keys programmed to the vehicle is also displayed.
The display
3\3 indicates that three keys have been programmed.
This allows you to make sure you have received all of the keys when
you purchase a used vehicle.
For example, if you only receive two keys, you should take those
keys to your authorized Audi dealer to have the missing key deacti­
vated so it cannot be used. You should also report the missing key
to your insurance company.
Calling up the driver information
A yellow or red symbol appears in the instrument cluster display,
usually with a driver message. The driver message display disap­
pears after about 5 seconds. The driver message can be displayed
again by briefly pressing the
I CHECK I button.
Setting the speed warning
By pressing the I CHECK] button briefly, you can set threshold 1 of
the speed warning while you are driving~
page 39. By maintaining
pressure on the [ CHECK] button, you delete the warning
threshold. •

Instruments and warning/indicator lights
& WARNING
If you have a malfunct ion in the airbag system, contact your autho­
rized Audi dealer immediately. Otherwise the airbag or the belt
tensioner may not work properly in an accident. •
Tire pressure monitoring system -telltale
indicator lamp '-)
The warning/indicator light appears in the event of a
significant loss of air pressure .
The ( warning/indicator light il luminates for a few seconds after
the ignition is turned on as function check and then goes out.
If the symbo l appears, pressure is too low in at least one tire.
When the system detects a malfunction, the warning/indicator light
will flash for approximately one minute and then remain continu­ ously i lluminated . This sequence wi ll continue upon subsequent
vehic le starts up as long as the malfunction exists. Contact your
authorized Audi dealer and have the malfunction corrected .
For more information
=> page 44. •
Turn signals ¢ Q
The indicator light blinks when you use either turn signal.
Whenever you use the left ¢i or the right¢ turn signal, the ind icator
light blinks. When you use the emergency flashers, both indicator
lights flash .
If one of the turn signal light bulbs burn out, the turn signal will
blink twice as fast as normal.
This does not apply, however, in towing mode . The indicator light
does not flash if a turn signal is out on the trailer or the towing
vehic le. Additional information on the turn signa ls=>
page 77 . •
App lies to vehicles: wi th tow ing h itch
Trailer turn signal assembly ¢ 19
The indicator light also blinks if the turn signal is operated
when towing a trailer.
The indicator light ¢1i> bl inks when the turn signal is used, if a trailer
has been properly connected to the vehicle.
If one of the turn signa l bu lbs on the trailer is burned out or defec ­
tive, the indicator light will not b link when you use the turn signals.
[ i ] Tips
For vehicles with a factory installed towing hitch or a trailer hitch
that was installed later according to factory specifications, the
trailer turn signa l assembly is actuated. •
Malfunction Indicator Lamp (MIL) :,
The Malfunction Indicator Lamp (MIU is part of the On-Board Diag ­
nostic (OBD II) system. The symbo l lights up when the ignition is
turned on and will turn off after the engine has started and has
settled at a constant idle speed . This indicates that the MIL is
working properly.
The warning light il luminates when there is a malfunction in the
engine electronic system. Contact your authorized Audi dealer and
have the malfunction corrected.
An improperly closed fuel filler cap may also cause the MIL light to
illuminate
=> page 327.
For more information => page 29. •

Driver information display
-Stop the vehicle.
- Turn off the engine .
-Check the engine oil level with the dipstick=:, page 335.
Dipstick readings checks too low
-Top off oil to the proper level =:, page 336.
-Make sure that the oil pressure warning symbol "t=7':
appears no longer in the display before you start driving
again.
Dipstick reading checks OK
If the oil pressure warning symbol "t=7': starts flashing
again even though the engine oil level checks OK on the
dipstick,
do not continue driving and do not let the
engine run in idle.
Instead, contact your authorized Audi
dealer for assistance .
[ i] Tips
• The engine oil pressure symbol ~ is not an indicator for a low
engine oil level. Do not rely on it . Instead, check the oil level in your
engine at regular intervals, preferably each time you refuel, and
always before going on a long trip .
• The yellow oil level warning indication requires oil refill or
workshop service without delay . Do not wait until the red oil pres­
sure warning
~ starts to flash before you respond to the low oil
level warning _ . By then, your engine may already have suffered
serious damage. •
Steering malfunction i
If there is a malfunction in the electronic steering column
lock, the steering cannot be unlocked.
If the i symbol in the display blinks, there is a malfunction
i n the electronic steering column lock. An additional dr iver
message can also be displayed by pressing the
I CHECK]
button:
Do not drive vehicle: Steering defective
-Contact your nearest authorized Audi dealer or qualified
workshop .
- Do
not tow your vehicle.
& WARNING
Your vehicle must not be towed in the event of a malfunction in the
electronic steering column lock because it cannot be steered due
to the locked steering .
If it is towed with the steering locked, there
is the risk of an accident. •
Ignition lock malfunction ~
A malfunction in the ignition lock must be repaired imme ­
diately.
If the .Pe symbol in the display blinks, there is a malfunction
in the electronic ignition lock. An additional driver message
can also be displayed by pressing the
(CHECK] button:
Ignition lock defective. Contact workshop!
-Do not turn the eng ine off.
- Drive immediately to an authorized Audi dealer to have
the malfunction corrected.
~

Driver information display
Tire pressure monitoring sys-=> page 44
tern
Loss of air pressure
- -
Tire pressure monitoring sys-=> page 46
tern
System not available
Battery in remote control key
=> page 50
- -
Automatic transmission mal-=> page 789
function
Applies to veh icles: with Conven ience key
Key not in vehicle
? Key not in vehicle
This reminder appears along with the -symbol if the master key is
removed from the vehicle with the engine running. It is intended to
remind you (e.g. when changing drivers) not to continue the journey
without the master key.
If the master key is no longer in the vehicle, you cannot switch off
the ignition after stopping the engine and you also cannot start the
engine again. What is more, you cannot lock the vehicle from the
outside. •
Applies to vehicles: w ith light and ra in sensor
Light /rain sensor defective )
Automatic headlights/automatic wipers defective
If the symbol illuminates, the light sensor has failed. For safety
reasons the low beams are turned on permanently with the switch
in
AUTO. However, you can continue to turn the lights on and off
using the light switch . In the case of a defect in the rain sensor, the
windshield wiper lever functions are still available. Have the
•
light/rain sensor checked as soon as possible by an authorized Audi
dealer. •
Windshield washer fluid level too low "'·
Q Please top up washer fluid
If the symbol illuminates, add windshield washer fluid to the washer
system and also to the headlight washer system=>
page 346. •
Fuel supply too low I]
Please refuel
When this symbol ...1 illuminates for the first time, the fuel reserve
in your vehicle is still between 2.6 and 3 .2 gallons (10 -12 liters) .
Refuel as soon as possible=>
page 326.
If the symbol lights up, even when there is ample fuel in the tank,
and the text
Tank system malfunction! Contact workshop appears
in the display, there is a fault in the system . Contact a qualified work­
shop to have the fault rectified. •
Battery voltage
If the battery's state of charge is not in the optimal range, the
symbol is shown in the display and the driver message
Low battery
charge: battery will be charged while driving
appears.
While this driver notification is displayed, you have to be prepared
for limited starting capability.
Driver message appears and goes out again
If this driver message appears after the ignition is turned on or
while driving and it goes out again after a while, the battery has
been adequately recharged.

Driver information display
In addition, all the values in the single -trip or the total -trip memory
can be deleted simultaneously.
[ i ] Tips
All stored values will be lost if the vehicle battery is disconnected. •
MMI settings
Basic settings for the trip computer can be made in the
MM/.
Fig. 25 MMI display :
Trip computer
Setting values to zero
-Press the I CAR I function button.
- Select
Instrument cluster.
-Select Trip computer 1 or Trip computer 2.
-Select Reset to delete all the values in the memory
~ fig. 25.
Displaying and hiding driver information
-Press the I CAR I function button.
- Select
Instrument cluster.
- Selec t Trip computer 1 or Trip computer 2.
-Select, for example, Fuel range On to turn on the display
or
Off to turn the display off.
All values in the single-trip or the total-trip memory can be reset to
zero simu ltaneously in the MMI. In addition you can determine what
driving information from the trip computer shou ld be shown in the
instrument cluster display . If one of the pieces of driver information
is turned
off, that driver in formation will not be shown in the display.
The information will continue to be calculated by the trip computer
and can be turned back
on at any time. •
Tire pressure monitoring system
General notes l )
Each tire, including the spare (if provided), should be checked
monthly when co ld and inflated to the inflation pressure recom­
mended by the vehicle manufacturer on the vehicle placard or tire
inflation pressure label. (If your vehicle has tires of a different size
than the size indicated on the vehicle placard or tire inflation pres­
sure label, you should determine the proper tire inflation pressure
for those tires.)
As an added safety feature, your vehicle has been equipped with a
tire pressure monitoring system (TPMS) that illuminates a low tire pressure telltale when one or more of your tires is significantly
under-inf lated . Accordingly, when the low tire pressure telltale illu­
minates, you should stop and check your tires as soon as possible,
and inflate them to the proper pressure. Driving on a significantly
under -inflated tire causes the tire to overheat and can lead to tire
failure. Under-inflation also reduces fuel efficiency and tire tread
life, and may affect the vehicle's handling and stopping ability.
Please note that the TPMS is not a substitute for proper tire mainte ­
nance, and it is the driver's responsibility to maintain correct tire .,_

pressure, even if under-inflation has not reached the level to trigger
illumination of the TPMS low tire pressure tellta le .
Your vehicle has also been equipped with a TPMS malfunction indi­ cator to indicate when the system is not operating properly . The
TPMS malfunction indicator is combined with the low t ire pressure
telltale . When the system detects a ma lfunction, the telltale wil l
fl ash for approximately one minu te and then remain continuously
illuminated . T his sequence will continue upon subsequent vehicle
start-ups as long as the ma lfunction exists.
When the malfunction indicator is illuminated, the system may not be ab le to detect or signal low tire pressure as intended. TPMS
malfunctions may occur for a variety of reasons, including the
installation of replacement or alternate tires or wheels on the
veh icle that prevent the TPMS from functioning properly. Always
check the TPMS malfunction telltale after replacing one or more
tires or whee ls on your vehicle to ensure that the replacement or
a lternate tires and wheels allow the TPMS to continue to function
properly .•
Introduction
The tire pressure monitoring system monitors air pressure
in all four road wheels while the vehicle is moving.
As soon as the tire pressure mon itoring system senses a s ignificant
loss of air pressure in one or severa l tires, text messages and yellow
symbo ls appear in the instrument cluster display to a lert the driver .
T he ~ warning light in the instrument cluster comes on when the
t ire is significant ly underinflated ;;:,
page 20.
The warning light ' also illuminates in the case of a system
malfunction.
Be aware that tire pressure is also dependent on the temperature of
the tire. For every 18 °F (10 °Cl increase in tire temperature, tire pres ­
sure increases by about 1 .5 psi (0 .1 bar). The tire warms up while the
vehic le is moving and tire pressure rises. So you should adjust tire
Controls and equip­
ment
Dr ive r informat ion di spl ay
pressure only when they are cold, when the temperature of the tires
is roughly the same as the ambien t air temperature .
In order to keep the tire pressure monitoring system properly cali ­
brated, tire pressure on all four tires should be checked at regular
intervals, adjusted if necessary and saved in the proper setting
(recommended pressure) ;;:,
page 45.
The tire pressure is shown on the tire pressure label. On USA vehi­
cles, the tire pressure labe l is located on the driver's side 8-pi llar . On
Canada vehicles, the tire pressure labe l is located eithe r on the
driver's side 8 -p illar or inside the fuel fi ller flap. The tire pressure
label lists the recommended cold tire inflation p ressu res for the
vehic le at its maximum capacity weight and the tires that were on
your vehicle at the time it was manufactured. For recommended tire
pressures for normal load conditions, please see chapter
;;:, page 351.
& WARNING
• When the tire pre ssure monitoring sy stem warning light i s lit ,
one o r mor e of your tires i s signifi ca ntl y under -infl ated . You should
stop and che ck your tire s as soon as possible , and inflate th em to
th e prop er pre ssure a s indicated on the v ehicle' s tir e pr ess ure
l a bel ;;:,
pa ge 351. Driving on a signifi cant ly under-infl ated tire
ca use s the tire to overhe at and can lead t o tire f ailure. Und er-infla ­
tio n a lso is likely to imp air th e vehicle' s handling and stoppi ng
ability .
• Do not adju st tire pre ssure whe n tire temp erature is exc essiv e.
Thi s could le ad to serious tire damage and even cause the ti re to
burst , with the additi onal d ange r of an acc ident .
Driving with under -inflated tires reduces fue l efficiency and tire
tread life.
I • •

[ i ] Tip s
• In the case of an intentional loss of air pressure, for example,
when re -adjusting tire pressure, this has to be stored again after ­
wards:::::,
page 45 .
• Tire pressure must only be adjusted when the temperature of the
tires is about the same as ambient air temperature.
• The ye llow symbol disappears, when the tire pressure is
corrected and the new pressure is stored in the system=:>
page 45.
• After changing a wheel you have to adjust the tire pressures on
all whee ls . In addition, you must then initialize the new tire pres­
sures in the tire pressure monitoring system=:>
page 46. •
Storing tire pressures
Correct storage of specified pressure is the basic require­
ment for reliable tire pressure monitoring.
Fig. 27 Car: Tire pres ­
s u re moni to rin g
sys tem
In o rder for the tire pressure mo nitoring system to operate
appropriately, you have to re -save the specified pressures in
the MMI wheneve r you adjust tire press ures, for example
when the load condition o f your vehic le changes. Proceed
as follows:
Controls and equip ­
ment
Dr ive r informat ion di spl ay
C orr ec ting tir e pr essur e
Check the pressure in the tires.
- Adjust air pressure according to the tire pressure label or the pressures listed in this manual~
page 351 .
Saving tir e pr essures
Turn o n the ignition .
Press the
I CAR] function button.
- Select
Systems in the CAR menu.
- Select
Tire pre ssure monitoring .
-Select Store curr . tir e press ures~ fig . 27.
All pressure warning indicators in the display wi ll be canceled.
Following each intentional change in specified pressures, tire pres­
sures must be resaved.
After the pressures are saved, the tire pressure monitoring system measures the current tire pressures and saves them as the new
specified pressures.
[ i ] Tip s
• The tire pressure is shown on the tire pressure label. On USA
vehicles, the tire pressure label is located on the driver 's side B ­
pillar. On Canada vehicles, the tire pressure label is located either on
the driver's side B -pillar or inside the fuel filler f lap . T he tire pressure
label l ists the recommended cold tire inflation pressures for the
vehic le at its maximum capacity weight and the tires that were on
your vehicle at the time it was manufactured. For recommended tire pressures for normal load conditions, please see chapter
=:>
page 351. ._
I • •

pillar. On Canada vehicles, the tire pressure label is located either on
t he driver's side 8 -pillar or inside the fuel fil ler flap. Inflate trailer
tires to trailer and tire manufacturers' specifications.
L ight s
The head light settings should be checked with the trailer attached
before driving off . Check to make sure both vehicle and trai ler lights
are working properly.
Sa fety c hain s
Be sure trailer safety chains are properly connected from the trailer
to the hitch on the vehicle . Leave enough slack in the chains to
permit turning corners. When you insta ll safety chains, make sure
they will not drag on the road when you are driving .
The chains should cross under the tra iler tongue to prevent it from
dropping in case of separation from the hitch.
0 Note
If you are going to tow a traile r, you must activate the trailer opera ­
tion mode =>
page 211, "Towing a trailer" .
Driving instructions
Driving with a trailer always requires extra care and
consideration.
To obtain the best possible handling of vehicle and trailer,
please note the fo llow ing:
- Do not tow a loaded trailer when your car i tse lf is not
loaded .
- Be especia lly careful when passing other vehicles .
- Observe speed l imits.
- Do not drive at the maximum permiss ible speed .
Controls and equip­
ment Safety first Vehicle operation
Tr
aile r t owing
Always apply brakes early .
- Monitor the temperature gauge .
Weigh t dis tr ibution
Towing a loaded trailer wi th an empty car results in a highly
unstable dis tribution of weight . If this cannot be avoided , drive at
very low speeds only to avoid the risk of losing steering control.
A "balanced" rig is easier to operate and control. This means that
the tow vehicle should be loaded to the extent possible and permis ­
sib le, while keeping the trailer as light as possib le under the circum ­
stances . Whenever possible, transfer some cargo to the luggage
compartment of the tow vehicle whi le observing tongue load
requirements and vehicle loading considerations .
Speed
The higher th e speed, the more difficu lt it becomes for the driver to
control the rig . Do not drive at t he maximum pe rmissible speed.
Reduce your speed even more
if load, weather or wind conditions
a re unfavorable -particularly when going downhil l.
Reduce vehicle speed
i mmedi ate ly if the trailer shows the slightest
sign of swaying.
Do not tr y to s top the swaying by accelerating .
Observe speed limits . In some areas, speeds for vehicles towing
trailers are lower than for regular vehicles .
Always apply brakes early. When driving downhill, shift into a lower gear to use the engine braking effect to slow the vehicle. Use of the
brakes alone can cause them to overheat and fa il.
Coo lant t emperatu re
The coolant temperature gauge=> page 13 must be obse rved care ­
ful ly. If the need le moves close to the upper end of the sca le , reduce
speed immediately and/or turn off the air conditioner .
If the coolant temperature warning light in the instrument cluster
starts f lashing
- f- , pul l off the road, stop and let the engine idle for
about two minutes t o prevent heat build -up.
Vehicle care Do-it-yourself service Technical data

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•
Closing the engine hood
- Pull the hood down until the pressure from the struts is
reduced .
- Let the hood
drop down and latch in place. Do not try to
push it shut;
it may fail to engage => &.
& WARNING
A hood that is not completely latched could fly up and block your
view while driving.
• When you close the engine hood, check it to make sure the
safety catch has properly engaged. The hood should be flush with
the surrounding vehicle body parts.
• If you notice while driving that the hood is not secured prop­
erly, stop at once and close it. •
Working in the engine compartment
Be especially careful whenever you work in the engine
compartment.
Whenever you must perform any work in the engine compartment,
for example checking and filling different fluids, there is a risk of injury, burns and accidents. To prevent personal injury always
observe the following WARNINGS. The engine compartment of any
vehicle is a hazardous area
~ & .
& WARNING
To help avoid injury, before you check anything under the hood :
• Turn off the engine.
• Remove the ignition key.
• Apply the parking brake .
& WARNING (continued)
• Move selector lever to "P" (Park).
• Always let the engine cool down. Hot components will burn
skin on contact.
• To reduce the risk of being burned, never open the hood if you
see or hear steam or coolant escaping from the engine compart­
ment. Wait until no steam or coolant can be seen or heard before
carefully opening the hood.
• Keep children away from the engine compartment .
• Never spill fluids on hot engine components. They can cause a
fire.
• Never touch the radiator fan. The auxiliary electric fan is
temperature controlled and can switch on suddenly.
• Never open the coolant reservoir cap when the engine is still
warm . The coolant system is pressurized and hot coolant could
spray out.
• Protect your face, hands and arm from steam or hot engine
coolant by placing a thick rag over the cap when you open the
coolant reservoir.
• If work on the fuel system or the electrical system is necessary :
- Always disconnect the battery.
- Never smoke or work near heaters or open flames . Fluids in
the engine compartment could start a fire.
- Keep an approved fire extinguisher immediately available.
• To avoid electrical shock and personal injury while the engine
is running or being started, never touch:
- Ignition cables
- Other components of the high voltage electronic ignition system.
• If you must perform a check or repair with the engine running: -First, fully apply the parking brake, move selector lever to "P"
(Park). .,
Vehicle care
I t •

Checking and filling -
---------------------=----"=---------
0 Note
Driving with an insufficient oil level is likely to cause severe damage
to the engine.
[ i] Tips
• The oil pressure warning display~ is not an indicator of the oil
level. Do not rely on it. Instead, check the oil level in your engine at
regular intervals, preferably each time you refuel, and always before
going on a long trip.
• If you have the impression your engine consumes excessive
amounts of oil, we recommend that you consult your Audi dealer to
have the cause of your concern properly diagnosed. Keep in mind
that the accurate measurement of oil consumption requires great
care and may take some time . Your Audi dealer has instructions
about how to measure oil consumption accurately. •
Checking the engine oil level
Fig. 284 Illustration of
principle 1: Markers on
oil dipstick Fig
. 285 Illustration of
principle 2: Markers on
oil dipstick
Before you check anything in the engine compartment,
always read and heed all WARNINGS=> & in "Working in
the engine compartment" on
page 331.
Determining oil level
-Park your vehicle so that it is horizontally level.
- While at operating state temperature, briefly let the
engine run at idle and then shut it off.
- Wait approx. two minutes.
- Pull out the oil dipstick. Wipe off the oil dipstick with a
clean cloth, and slide it back in as far as it will go.
Pull it back out and read off the oil level=> fig. 284 or
=> fig. 285. Top off the engine oil, if applicable
=>
page 336.
Oil level within range @
- Do not add oil.
Oil level within range @
-You can add oil. Afterwards, the oil level should be within
range @. _,,,
Vehicle care I I irechnical data