2009 AUDI Q7 ignition

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Engine compartment
Be especially careful when cle aning the engine compart­
ment.
Alw ays sw itch off the ignition before cle aning the en gine ~ &.
Ple num p anel
Remove leaves from the p lenum pane l in front of the windshield
under the engine hood. This prevents the water drain ho les from
becoming blocked, and it prevents debris from entering the vehicle
inter ior through the hea ting and ventilation ducts .
Corrosion protection
The engine compartment and transmission have been corrosion ­
protected at the factory .
Good anti-corros ion treatment is very important, particularly in the
winter. If the vehicle is frequently driven on salt treated roads, the
en tire engine compartment and plenum pa nel sh ould be tho r­
oughly c leaned at the end of winter and retreated to prevent salt
damage. A t the same time, the underside o f the vehicle shou ld be
washed as well.
If the engine compartment is cleaned at any t ime with grease
removin g solutions
3
l, or if you have the eng ine washed, the anti ­
corrosion treatment is almost a lways removed as well. It is therefore
essential to have a long -lasting corrosion protection reapplied to all
surfaces, seams, joints and components in the engine compart ­
ment .
& WARNING
Be awa re: The engi ne compa rtment of any moto r vehicle i s a
potenti ally ha zardou s area .
• Before workin g in the eng ine compartment , be sure to read the
inform ation
~ page 324 .
31 Use on ly the correct cleaning solutions. Never use gasoline or diesel fuel.
& WARN ING (continued )
• Before reaching into the front plenum panel , always remove the
ignition key . Otherw ise, the windshield wiper system could unin ­
tentionally be swit ched on , po ssibl y causing personal injury from
the moving wiper link age .
• Never re ach into the are a a round or touch the radiator fan . The
au xilia ry fan i s temper ature cont rolled and can swit ch on suddenly
- even when the ignition is off .
• Do not w ash, w ax or dry the engine with the engine run ning.
Moving or hot parts could injure you .
• Do not clean the underside of the cha ssis , fenders , wheel
cover s, or other hard to rea ch parts without protecting your hands
and arm s. You ma y cut your self on sh a rp -edged metal part s.
• Always read and heed all WARNINGS and other inform ation
~ poge312. •

Fue l supply and fillin g you r fu el tank -___________ ...:._:......:,_______;::;...a,__ __
•
Fuel supply and filling your fuel tank
Gasoline
Fuel supply
Using the right fuel helps keep the environment clean and
prevents engine damage.
Fuel r ecomm end ati on
The fuel recommended for your vehic le is unl eade d prem ium grade
gaso line . See also ~
page 399, "Data". Audi recommends using TOP
T IER Detergent Gasoline with a minimum octane rating of 91 AKI (95
RON). For more information on TOP TIER Detergent Gaso line, please
go to the official website (www.toptiergas .com).
The recommended gasoline octane rating for your engine can also be found on a label located on the inside of the fuel fille r flap. This
rating may be specified as AK I or RON .
Your vehic le may also be operated us ing unleaded regular gasoline
with a minimum octane rating of 87 AKl/91 RON . However, using 87
AKl/9 1 RON octane fuel will slightly reduce engine performance.
Use unle ad ed ga so line only . Unleaded gaso line is avai lable
throughout the USA, Canada, and in most European countries. We
recommend that you do not take your vehicle to areas or countr ies
where un leaded gasoline may not be available .
For more information on refueling your vehicle, see~
page 326.
Octane ra tin g
Octane rating indicates a gaso line's ability to resist engine
damaging "knock" caused by premature ignition and detonation.
Therefore, buying the correct grade of gaso line is very important to
help prevent possible engine damage and a loss of engine perfor ­
mance. Gasoline most common
ly used in the United States and Canada has
the following octane ratings that can usua lly be found on the filler
pump:
• Premium Grade : 91 -96 AKI
• Regular Grade: 87 -90 AKI
Explanation of the abbreviations:
AKI = Anti Knock Index= (R +M)/2 = (RON +MON)/2
RON = Research Octane Number
MON
= M otor Octane Number .
0 Note
• Do not use any fue l with octane ratings lower than 87 AKI or 91
RON otherwise expensive engine damage will occur .
• Do
not use leaded gasoline. The use of leaded gasoline w ill
severe ly damage your vehicle's catalytic converter and its abi lity to
control exhaust emissions. •
Blended gasoline
Use of g aso line containing alco hol or M TB E ( meth yl
t er tiary butyl e ther )
You may use unleaded gasoline blended with alcohol or MTBE
(commonly referred to as oxygenates) if the blended mixture meets
the follow ing criteria:
Bl end of g asoline m eth anol (wood al coho l or methyl alc oh ol)
• Anti-knock index must be 87 AKI or higher .
• Blend must contain no more than 3% methanol.
• Blend must contain more than 2% co-solvents.
Vehicle care I t •

<£> For the sake of the environment
As soon as the correctly operated nozzle switches off automatically
for the first time, the tank is full. Do not try to add more fuel because
fuel may spill out. In addition, the expansion space in the fuel tank
will be filled -causing the fuel to overflow when it becomes warm
and pollute the environment.
[ i] Tips
• Running your engine while refuelling may cause vapors to
escape or even cause fuel to spill out of the tank. This would then
shut off the fuel nozzle before the tank is full.
• Do not refuel your vehicle with the ignition turned on . The fuel
gauge may otherwise not indicate the correct fuel level after
refuelling. •
Unlocking the fuel filler flap by hand
You can open the fuel filler flap by hand if the power
locking system should fail .
•
Fig. 279 Luggage
compartment : Prying
cover open
Fuel supply and filling your fuel tank
Fig. 280 Luggage
compartment : Emer­
gency opening of fuel
filler flap
- Remove the right-side trim panel with the aid of a screw­
driver => fig. 279.
- Pull the loop down in the direction of the arrow to unlock
the fuel filler flap=> fig. 280. •
Vehic le care I I irechnical 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 •

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models; 60% for Canadian models). This mixture both assures the
necessary frost protection and protects metal components in the
engine's cooling system from corrosion and scaling. It also raises
the boiling point of the coolant.
Do not reduce the concentration of the coolant in the summer by
adding plain water.
Th e pro port io n of coo la nt additi ve mu st be at
lea st 50 % but n ot mor e th an 60 %
to maintai n ant ifreeze protection
and cooling efficiency. If the coolant frost protection is too low , the
coolant could free ze and damage the veh icle heating and engine
cooling system .
For year-round driving , antifreeze is added at the factory for temper ­
atures down to:
• -31 °F ( -35 °c1 usA
• - 40 °F ( - 40 °C) Canada.
You can mix the
Gl 2+ + coolant additive with other additives (G12+
or G12). Always check w ith your authorized Audi dealer.
& WARNING
B efo re you che ck anyt hing in th e eng ine compartmen t, alway s
re ad a nd he ed all WARN ING S~
& in " Working in the engine
c ompar tm ent " on
page 33 1.
0 Not e
• Before winter sets in, have the coolant checked to see if the
coo lant additive in your vehicle is sufficient to meet the climate
conditions. This is especia lly important if you live in a region where
the winter is extremely cold . If necessary, increase the proportion of
coolant additive to 60%.
• When adding coolan t additive to your coo ling system,
remember:
-We recommend using only coolant additive
G12+ + (check the
label) for your vehicle. This coolant additive is avai lable at autho­
riz ed Audi dealers. Other types of antifreeze can significantly reduce corrosion protection. The resulting corrosion can cause a
loss of coolant and serious engine damage.
• Do not add any type of radiator leak sealant to your vehicle's
engine coolan t. Adding radiator repair fluid may adversely affect the
function and performance of your cooling system and could result
in damage not covered by your New Vehicle Limited Warranty. •
Checking the engine coolant level
The engine coolant level can be checked with a quick
glance.
F ig . 287 E ngine
com partm ent : Cool ant
ex pans io n tank
Before you check anything in the engine compartment,
alw ays read and h eed all WARNINGS ~
& in "Working in
the eng ine compartment" on page 331.
- Turn off the ignition.
- Let the engine coo l dow n.
Place a thick rag over the coola nt expansio n tank
~ fig . 287 and carefully twist the cap counter-c lockwise
~ & - .,

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G12+ +, G12 + or G12 is not available, do not use a different addit ive .
Use p lain water ins tead until you ca n get the c orrec t additive and
can restore the correct ratio . This should be done as soon as
poss ible.
If you have los t a considerable amount o f coo lant, then you s hould
add co ld antifreeze and cold water only when the engine is cold .
A lways us e
new en gi ne c oolant when refi llin g .
Do not fi ll coo lant above the "MAX" mark. Excess coolant wil l be
forced out through the pressure relief valve in the cap when the
engine beco mes hot.
& WARNING
• The cooling sy stem is under pressure and can get very hot .
Reduce the risk of s calding 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 .
- Turn the cap slowly and very carefully in a counter -clockwise
dire ction 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 condi ­
tions , the ethylene glycol in engine coolant can catch fire.
• Antifreeze is po isonous . Always store antifreeze in its original
container and well out of the reach of children.
• If you drain the coolant , it must be caught and safely stored in
a proper container clearly marked "poison ".
0 Note
• Coo lant po llutes t he e nviro nment and cou ld cause a n en gin e
fire. Excess coolant wi ll be forced out through the pressure re lief
va lve in the cap when the eng ine becomes hot.
• I f, in an emergency, on ly wate r can be added, the correct ratio
between wate r and ant ifree ze::::>
page 337 must be restored as soon
as possib le .
W For the sake of the environment
Drained coolant should not be reused. Always dispose of used
coo la nt whi le observ ing all env iro nmen tal reg ulat io n s. •
Radiator fan
The radiato r fan switches on au toma tic ally by i tself.
The radiator fa n is dr iven by the eng ine via th e V -belt. The visco us
clutch regulates the speed of the fan according to the temperature
o f t he coo la nt.
An auxiliary electric radiator fan * sw itches on and off depending on
coo la nt t empe rat ure a nd othe r vehic le operating c ondi tio ns.
A ft er you sw itch the e ngine o ff, the au xiliary fa n ca n conti nue
running for up to 10 m inutes- even with the ignition off. It can even
switch o n again lat er by itsel f::::> & , if
• the temperature of the eng ine coo lant rises due to the heat
bu ild -up from the eng ine in the eng ine compartment, or
• the engine compartment heats up because the vehic le is parked
in i ntense sun ligh t.
& WARNING
• To reduce the ri sk of personal injury never touch the radiator
fan .
~

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& WARN ING (c o ntinued )
• Brake failure can re sult from old or inappr opriate brake fluid .
Ob serve the se precautio ns:
- Use only brake fluid that meets SAE specific ation J 1703 and
c onform s to Fed era l Moto r Vehi cle St anda rd 116. Al ways c heck
with your authori zed Audi dealer to make sure you are u sin g
the corre ct brake fluid. The correct typ e of brake fluid i s also
indicated o n the brake fluid reser vo ir .
- The br ake flu id mu st be ne w. Heavy u se of the brake s can
c au se a vapor lock if the brake fluid i s left in the s ystem too
long. Thi s can seriou sly affect the effi cien cy of the brake s as
w ell a s your safet y. Thi s could re sult in an acci dent .
0 Note
Brake fluid will damage the paint of your vehicle .
For the sake of the environment
Because of the problem of proper disposal of brake fluid as well as
the special too ls required and the necessa ry expertise, we recom­
mend that you have the brake fluid changed by your authorized Audi
dea ler .•
Battery
General information
Under normal operating condi tions, the battery in your Audi does
not need any maintenance. With
high outside temperatures or long
daily drives we recommend that you have the e lectrolyte level
checked by an au thorized Audi dealer or qualified workshop . The
e lectrolyte level should also be ch ecked each time the battery is
charged ~
page 344.
Have the battery checked when you take your vehicle in for service .
Yo u are well advised to replace a battery that is o lder than 5 years .
With certain types of airbag dep loyment, the battery is discon ­
nected from the vehicle electrical system for safety reasons~
& in
"Repair, care and disposal of the airbags" on
page 255.
Disconnecti ng th e batt ery termin als
Some vehicle functions (power window regulators , for example) are
lost if the battery termina ls are disconnected. These functions have
to be relearned after the battery terminals are connected again . To
prevent this, the battery should only be disconnected from the
vehic le electrical sys tem when abso lutely necessary for repairs .
Vehicles not driven for long per iods
If you do not drive your vehicle ove r a period of several days or
weeks, electrical components are gradually cut back or switched off .
T his reduces energy consumption and maintains starting capab ility
over a longer period
~ page 295 .
Take i nto consideration that whe n you u nlock your vehicle, some
convenience functions, such as the master key remote function or
powe r seat adjustme nt, may not be ava ilable. The convenience
functions will be available again when you turn on the ignition and
start the engine .
Wint er op erati on
Duri ng the winter mont hs, batte ry capacity tends to decrease as
temperatures drop . This is because more power is also consumed
whi le star tin g, and the headlights, rear window defogger, etc ., are
used more often.
Avoid unnecessary power consumption, particular ly in city traffic or
when trave li n g o nly short dis tances . Let your authorized Audi dea ler
check the capacity of the vehicle battery before winter sets in
~ page 344. A we ll cha rged battery w ill not only preven t starting
problems when the weather is cold, but will also last longer . ..,_