2011 AUDI Q7 engine

-~_C_ le_ a_n_ i_ n_ g=- a_ n_d___. p_ ro_ t_e _c_ t_ i_o _n ___________________________________________ _
Engine compartment
Be especially careful when cleaning the engine compa rt­
men t.
Always switch off the ignition before cleaning the engine=:>& .
Plenum panel
Remove leaves from the plenum panel in front of the win dshi eld
unde r th e eng ine hood . T hi s prevents the water d rain holes from
becoming b locked, and it prevents debris from entering the vehicle
inter io r th rough the heat ing and vent ilation ducts .
Corrosion protection
The eng ine compartment and transmission have been cor rosion­
protected at the factory.
Good ant i-cor rosion treatment is very impo rtant , pa rtic ular ly in the
w inter . If the vehicle is frequently driven on sa lt treated roads, the
en tire eng ine compar tment and plenum p anel sho uld be thoroug hly
cleaned at the end of winter and retreated to prevent salt damage. At
t he same t ime, the underside of the vehi cle should be washed as well.
If the e ng ine compartment is clea ned at any t ime with grease
removing so lutions
2l , or i f you have the engine washed , the anti ­
co rros io n treatment is a lmost a lways removed as w ell.
It is t herefore
essential to have a long-last ing corrosion p rotect ion reapplied to all
surfa ces, seams, jo ints and compo nents in the engi ne co mpa rt ment .
& WARNING
Be aware: The engine compartment of any motor vehicle is a
potentially hazardous area .
• Before working in the engine compartment, be sur e to read the
information =:>
page 290.
2
l Use on ly th e co rr ect clean ing so lut ions. Never use gaso line or diese l fuel.
& WARNING (c on tinued )
• Before reaching into the front plenum panel , alway s remove
the ignition key. Otherwise, the windshield wiper system could unintentionally be switched on , possibly causing personal injury
from the moving wiper linkage.
• Never reach into the area around or touch the radiator fan. The
auxiliary fan is temperature controlled and can switch on suddenly
· ev en when the ignition is off.
• Do not wash, wax or dry the engine with th e engine running.
Moving or hot pa rts could injure you.
• Do not clean the underside of the chass is, fenders, wheel
covers, or other hard to reach part s without protecting your hands
and arm s. You may cut yourself on sharp-edged metal parts.
• Always read and heed all WARNINGS and other information
=:> page 2 78. •

Fuel supply and filling your fuel tank
Fuel supply and filling your fuel tank
Fuel supply
Applies to vehicles : w ith gasoline eng in e
Gasoline
Using the right fuel helps keep the environment clean and
prevents engine damage.
Fuel recommendation
The fuel recommended for you r vehicle is unleaded premium grade
gasoline . See also~
page 365, "Data". Audi recommends using TOP
TIE R Detergent Gasoline with a minimum octane rating of 91 AKI (95
RON) . For more information on TOP TIER Detergent Gasoline, please
go to the official website (www.toptiergas .com).
Th e recommended gasoline octane rating for your engine can also be
found on a labe l located on the inside of the fue l filler flap. This rating
may be specified as AK I o r RON.
Your vehicle may also be operated using unleaded regular gasoline
with a minim um octane rating of 87 AKl/91 RON . However, using 87
AKl/91 RON octane fuel will slightly reduce engine performance .
Use unleaded gasoline only. Unleaded gasoline is available
throughout the USA, Canada, and in most European countries. We
recommend that you do not take your vehicle to areas or countries
where unleaded gasoline may not be availab le.
For more information on refueling your vehicle, see~
page 293.
Octane rating
Octane rating indicates a gasoline's ability to resist engine damag ing
" kno ck" caused by prematu re ignition and detonation. Therefore,
buying the correct grade of gasoline is very important to help prevent
possible engine damage and a loss of engine performance.
Safety first
Gaso line most commonly used in the United States and Canada has
the following octane ratings that can usually be found on the filler
pump:
• Premium Grade: 91 - 96 AKI
• Regular Grade: 87 - 90 AKI
E xplanation of the abb reviations :
AKI= Anti Knock Index= (R +M)/2 = (RON+MON)/2
RON= Research Octane Number
MON= Moto r Octane Number.
0 Note
• Do not use any fuel with octane ratings lower than 87 AKI or 91
RON otherwise expens ive engine damage will occur.
• Do
not use leaded gasoline . T he use of leaded gasoline w ill
seve rely damage your veh icle's cata lytic converter and its ability to
control exhaust emiss io ns. •
Ap plies t o vehicl es: w ith gasoline eng in e
Blended gasoline
Use of gasoline containing alcohol or MTBE (methyl
tert iary butyl ether)
You may use unleaded gasoline blended w ith alcohol or MTBE
(common ly referred to as oxygenates) if the blended mixture meets
the following criteria:
Blend of gasoline methanol (wood alcohol or methyl alcohol)
• Anti-knock index must be 87 AKI o r higher.
• Blend must contain no more than 3% methanol.
• Blend must contain more than 2% co-solvents .
Vehicle care Technical data

Fuel supply and filling your fuel tank
Blend of g asoline and ethanol (grain alcohol or ethyl alcohol )
• Anti-knock index must be 8 7 AKI o r higher .
• Blend must not conta in more than 10% ethanol.
Blend of gasoline and M TBE
• Anti-knoc k index must be 87 AKI o r highe r.
• Blend must conta in not more than 15% MTB E.
Sea sonally adjusted ga soline
Many gasoline grades are b lended to perform especially well for
w inte r or summer d riving. Duri ng seasonal change-ove r, we s uggest
that you fill up at busy gas stat ions where the seasonal adjus tment is
mor e likely to be made in time.
0 Note
• Methano l fuels which do not meet these requirements may cause
co rrosion and damage to plast ic and rubber component s in the fue l
system .
• Do not use fuels that fail to meet the specified c riteria in this
chapter.
• If you are unable to dete rm ine whether or not a part icu lar fuel
blend meets the specifications, ask your service stat ion or its fuel
supplier .
• Do not use f uel fo r which t he con tents cannot be iden tifie d.
• Fuel system damage and performance problems result ing from
t he use o f fuels differe nt from t hose s pecifie d are not t he responsi­
bility of Aud i and are not covered u nder the New Ve hicle o r th e Em is­
sion Cont ro l System Warranties .
• If you experience a loss of fuel economy or drivea b i lity and perfor­
m ance problems d ue to the use o f one of these fue l blends , we
recommend that you switch to unblended fuel. •
App lies to veh ic les: with gaso line eng ine
Gasoline additives
A m ajor concer n amo ng many a uto m anufa ctu rers i s ca rb o n deposi t
build-up caused by the type of gasoline you use .
Altho ugh gaso line g rades differ from one manufacturer to another,
they have certain t hings in common . All gaso line grades contai n
substances that can cause deposits to collect on vita l engine pa rts,
su ch as fue l injecto rs an d inta ke valves. A lthough mos t gaso line
brands include additives to keep eng ine and fue l systems clean, they
are not equ ally effec tive.
Audi recommends us ing TOP TIER Detergent Gasoline . Fo r more
info rmation on TOP TI ER Detergent Gasoline, p lease go to t he off ic ia l
webs ite (www .toptiergas .com) .
After an extended period of using inadequate f uels, ca rbon deposit
build -ups ca n rob your e ngine of peak perfo rma nce .
0 Note
Damage o r malfunct ion d ue to p oo r fu e l quali ty is not covered by the
Audi New Vehicle Lim ited Warranty. •
Appli es to veh icles : with diesel e ngine
Diesel fuel
A lw ays us e ULS D (U ltra Low Sulfur Di esel) sulfur content
1 5 ppm or less .
The U LSD (Ul tra Low Sulfu r Die sel) meets t he AS TM- D-97S (grade 2) .
Diesel fuel w ith a higher concentration than ULSD-Diesel No. 2
ASTM D975 and Bio-die sel with a higher concentration than 5
%
like B11, B20 or B100 are strictly prohibited .
Serv ice station fue l pumps are labe led w it h the co rrect fuel informa­
ti on fo r easy recogni tion by the user. If the diese l fuel pump is not ..,_

labeled ask the station operator what fuel is being dispensed befo re
fi lling up yo ur vehicle.
Service stations offering Diesel f uel are generally loca ted on truck
routes or major hig hways. Directo ries of Diese l fue l stations are
usually availab le at Diese l fuel stations.
Some states in t he USA require permits to purchase Diesel fuel. Check
w ith your State Mo tor Vehicle De partment.
Diesel fuel may not be available outs ide the USA and Canada. Be sure
to check before trave ling to othe r countries .
Winter operation
At t empe ratures below 20° F (- 7° C), Die sel fue l No . 2 l oses its flu idity
due to wax separation, wh ich may clog the fuel filter or tank fi lter and
keep the engine from running .
T o help t he filte r from be ing clogged by wax, the fue l fi lter in your
vehicle is automatically preheated. Preheat ing the fuel f ilter makes
operat io n of yo ur vehicle possib le with Die sel fuel No. 2 dow n to -
10° F (-24° C).
If you expect temperat ures below 5° F (-1S° C) ask yo ur fuel dealer
whether their Diesel fuel No . 2 is suffic iently w interized for the
prevailing and expected temperat ures.
If not winterized or insuff ic ie ntly w inte riz ed Diese l fuel has already
thickened to the extent that the engine w ill not start, warm the
vehicle up by leaving i t in a heated garage.
It is normal that the eng ine noise level (dieseling) is louder during the
warm-up period in winte r. It is also normal when whitish -blue smoke
comes out of t he tailpipe afte r start ing and du ring warm-up. The
amount of smoke depends on the outside temperature .
Do not let your Diesel engine idle unnecessa rily af ter a co ld start.
Dr iv ing off slow ly w ill shorten the warm-up per iod.
Safety first
Fuel supply and filling your fuel tank
& WARNING
• Never use "starting as sist flu ids ." Th ey may be potentially
explo sive or cause a "run-away " engine condition . Thi s could
re sult in s eriou s engine damage and per sonal injury .
• Never u se fuel line anti -freeze off ered fo r ga soline engine s.
0 Note
• Your D iesel eng ine has been spec ifically desig ned to ope rate on ly
on Ultra Low Sulfur Diesel fue l. Therefore, never use home heating o il
or reg ular gasoline . The properties of these fuels may cause serious
damage to the fuel injection system and to t he engine . Using these
fue ls can cause expens ive eng ine repairs and will also adversely affect
your New Vehicle Lim ited Wa rranty.
• If Diese l fuel shou ld get on any rubber hose, it must be wiped off
immediately. Then wash the contaminated hose port ion w ith soap
and warm water . Do not allow Diesel fue l to remain on connecting
hoses. They may deve lop leaks and cause se rious damage. •
Fuel tank
Fuel filler neck
The f ue l fi ller neck is located o n the rig ht rea r side panel behind t he
fue l filler flap.
If the power locking system shou ld fai l, you can st ill open the flap
ma nually -for deta iled instructions see:::::>
page 296.
You can find the fue l tank capacity of your veh icle in
Technical Data
:::::, page 365.
The label on the inside of t he fuel filler flap tells you the correct fuel
for your veh icle. For more informat ion about fuel specifications, see
:::::>
page 291 . _,,
Vehicle care Technical data

Putting the fuel cap back on
- After filling your tank, twist the fuel fi ller cap c lockwise as
f ar as it w ill go.
- Close t he fue l fi ller flap.
To avoid fuel spi lling or evapo rating from the f uel tank a lways close
fue l filler cap properly and comp lete ly . An impro perly closed fuel
filler cap may also ca use the MIL lamp~
page 30 to come on (only
vehicle s wi th gaso lin e e ngine).
& WARNING
Improper refueling or handling of fuel can cause fire, explosion
and severe burns .
• Fuel i s highly flammable and can cause severe burns and other
injuries.
• Failure to shut the engine off while refueling and /or to insert
the pump nozzle fully into the fuel filler neck could cause fuel to spray out of filler n eck or to overflow. Fuel spray and ov erflowing
fuel can cause a fire.
• Never use a cellular telephone while refueling. The electromag­
netic radiation can cau se sparks that can ignite fuel vapors and
cause a fire.
• Never get back into your vehicle while refueling. If in excep­
tional cir cumstan ces you must get ba ck in your v ehicle while refu­
eling, make certain that you close the door and touch metal to
discharge static electricity before touching the filler nozzle again .
Static electricity can cause sparks that can ignite fuel vapo rs
released during refueling.
• Never smoke or have an open flame anywhere in o r near your
vehicle when refueling or filling a portable fue l container.
• For your safety , we strongly recommend that you do not travel
with a portable fuel container in your vehicle . The container , full
or empty may leak and could cau se a fire , especially in a crash.
Safety first
Fuel supply and filling your fuel tank
& WARNING (co ntinued )
• If, under exceptional circumstances , you must tran sport a
portable fuel container, please observe the following:
-Never fill a portable fuel container while it is anywhere in or
on the vehicle (for example, in the luggage compartment, or
on the trunk ). Static electricity can build up while filling and
can ignite fuel vapors causing a fire .
- Always place a portable fuel container on the ground before
filling .
- Always keep the filler nozzle completel y inside the portable
container before and during filling.
- If filling a portable container made of metal, the filler nozzle must always be in contact with the container. This will help
prevent static ele ctricity from discharging and cause a fire .
- Ne ver spill fuel inside the vehicle or luggage compartment .
Fuel vapor s are highly flammable.
- Always observe local and state /provincial laws regarding the
use, storage and tran sportation of fuel containers .
-Make certain the fuel container meets industry standards
( ANSI / ASTM F852-86 ).
0 Note
If any f uel has spilled o nto the ca r, it should be remove d immed iate ly
to prevent damage to the paint.
As soon as the co rrectly ope rated no zzle switches off a utomat ica lly
f or t he firs t time, the t ank i s full. Do no t try to ad d mo re fuel bec ause
fue l may spill out. In addition, the expansion space in the fuel tank
w ill be fi lled -caus ing the fue l to overf low when it becomes wa rm and
poll ute the enviro nment . .,_
Vehicle care Technical data

If Ad Blu e usag e incr eas es due to ind iv id ual driving sty le, th e d river
must add Ad Blue be tween sche duled m ain te na nce in te rv al s
=>page 298.
& WARNING
Failure to heed Ad Blue refill information in the instrument cluster
c an prevent the vehicle from being started and driven . If the
vehicle cannot be driven and an emergency arises, personal injury
c an oc cur.
• Always have the Ad Blue tank refilled well before the tank runs
dry.
[ i J Tips
• If the A d Blue t ank is complete ly em pty, the engine w ill not s tar t
agai n after the igni tion is sw itched off. The instrument cluster d isp lay
ind ica tes t he distance remaining tha t can be driven =>
page 297 .
• Ad Blue is required by law to operate this vehicle.
• AdBlue ® is a regis tered tradem ark of the Regis tered Automob ile
Assoc iation (Verband der Automobilindustrie e . V. -VOA). •
Safety first
Fuel supply and filling your fuel tank
App lies to ve hicles : w ith d iese l eng ine
Indicator in the instrument cluster display
The display indicates if the Ad Blue level is low or if it was
filled incorrectly .
AdBlue level low
Fig. 228 In str ument
clu ste r: i ndi cator in the
di sp la y
Yo u will be informed if the Ad Blue in the ta nk drops be low a certain
level.
Ad Blue f) 1500 mi (2400 km ) Refill AdBlue. See owner 's
manual
Thi s indicator appea rs when there is only eno ugh Ad Blue left to drive
the distance indicated in the driver information system. You w ill hear
a warning signal. P lease add AdBl ue.
l " n _ 0 "' Refill Ad Blue! No restart in
600 miles (1000 km )! See owne r's manual
Thi s indi cato r appea rs w hen there is only eno ugh Ad Blue left to dr ive
the dis tance ind icated in the driver informat ion system. You will also
hear a wa rning signal. P lease add Ad Blue. Otherw ise the engine w ill
not start again if you stop it once the d istance ind icated has been
driven.
AdBlue f) 0 mi (0 km) Refill Ad Blu e! No re start! See own er' s
manual
Vehicle care Technical data

Fuel supply and filling your fuel tank
This message appears when the AdBlue tank is empty. You will also
he ar three warning signals in a row. Please add AdBl ue. Otherwise yo u
w ill not be able to start the engine again once you stop it.
When the minimum Ad Blue level has been reached, you must add at least 1 gallon (3.8 liters) . This is equal to two bott les from the refill
container available from authorized dealers~
page 298. This is the
m ini mum amo unt required to ensure the system detects the refill ing
and to start the engine.
Filling incorr ectly
If the Ad Blue tank was filled w ith a different fluid than Ad Blue and
the sys tem detects that it is incor rect, you will be not ified as follows:
ff 1
, 'W"l , AdBlue! No re start in 600 miles
( 1000 km )! See owner 's manual
Th is message appears when it is only possible to drive the distance
indicated in the
driver information system. You will also hear a
wa rning signa l. Drive to the nearest qualified wo rkshop to have the
ma lfunction repaired. Otherw ise the engine w ill not start again if you
stop it once the distan ce indicated has bee n driven .
Ad Blue ~ 0 mi (0 km ) Ad Blu e: syste m fault . No res tart! See
owner 's manual
Th is message appears if the system detects it was filled inco rrectly.
You will also hear three warning signals in a row.
Drive immediately
to the nearest qua lified workshop to have the malfunction repaired .
O therwise you w ill not be able to star t the engine again once you stop
it .•
A ppli es to veh icles : wi th diesel e ngine
Filling AdBlue
A special refill bottle must be used to fill the Ad Blue.
Fi g. 2 29 Rig ht r ea r
veh icle side : re moving
t h e A dBlu e ca p
Fig . 230 A d Blue filler
t ub e: in sert ing t he
re fill bottl e
The filler flap automatically unlocks or locks w hen the central
locking system is operated. The Ad Blue filler tube is located
at the right near the diesel filler tube.
Opening the filler tube and adding AdBlue
- Press the left side of the fuel filler flap to open it
=> page 294, fig. 224 -arrow- .
- Turn the cap counte rclockwise with the lug wrench from
the vehic le tool ki t to remove it~ fig. 229.
~

- Remove the cap from the refill bott le.
- Position t he refill bott le on the filler tube a nd turn the
bottle clockwise u ntil it stops turning~
page 298,
fig. 230 © -
- Press lightly against the bottom of the bottle@to em pty
it. Contin ue pressing the bottom o f the bott le until it is
empty or until fluid stops flowing into the tank.
- Turn the bottle to the left without pressing on the
bottom .
Closing the filler tube
- Turn t he cap clockw ise on t he fi ller t ube with t he lug
wrench un til you hear it t ighte n comp letely.
- Then press on the le ft side of the filler fla p un til yo u hear
i t lock.
& WARNING
• Ad B lu e can irritat e the skin, eye s and respiratory sy stem. If
the re is contact with the fluid , flush immed iately with plenty of
water. Con sult a phy sician if ne ce ss ary .
• Do not allow Ad Blue to come into contact with clothing. If
there is contact with the fluid , flush immediate ly with plenty of
water.
0 Note
• Only use Ad Blue that conforms to the standard ISO 22241-1. Do
no t m ix any addit ives wi th the Ad Blue and do not dil ute it with water.
• Ad Blue is not a diesel add it ive. Do not add it to the diese l tank. If
Ad Blue is mixed w it h diesel f ue l, it can lead to damage to the engine
and the Ad Blue tank system. The L imited New Vehicle Warranty does
no t cover su ch damage.
Safety first
Fuel supply and filling your fuel tank
• Ad Blue attacks surfaces such as pai nted vehicle components,
plast ic and carpet. Remove the fluid as q uickly as poss ible wi th a
damp cloth and plenty of cold wate r. If the Ad Blue has already crys­
tallized, use wa rm water and a sponge. Ad Bl ue residue that is not
removed will crystallize and can damage the affected s urface.
• Do not store the refi ll bott le in the veh icle. If it leaks, the esc aping
Ad Blue could damage the vehicle interior .
(I) Tips
• The fuel fil ler flap of your vehicle is not locked whe n you lock the
vehicle from the inside.
• The refill bottle ho lds approximate ly 0.5 gallon (1.9 liters) .
Always add two bottles of Ad Blue (1 gallon/3.8 liters) as soon as a
message appears in the instrument cluster display~
page 297. The
ignition must be switched off when filling the Ad B lue.
• The vehicle must be driven after the Ad Blue has been fi lled. The
system may take up to two minutes to detect when Ad B lue is added .
Whe n there is no more Ad Blue in the ta nk and
O mi (0 km) appears in
the instrument cluster display, switch the ignition on for approxi­
mately 15 seco nds and then sta rt the eng ine.
• You can obtain refill bottles from any a uthorized Audi dealer or
other qualified workshop.
• F ollow t he Ad Blue manufacturer 's inst ru ct io ns for usage and
storage .•
Vehicle care Technical data