2010 AUDI Q7 engine

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- We recommend using only coolant additive Gl2 ++ (check the
l a bel) for yo ur vehicle. This coolant ad dit ive is available at au tho·
r ized Audi dealers . Other types of antifreeze can s ignificantly
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
eng ine coo lant . Adding radiator repa ir 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 .
Fig. 2 35 En gin e
c o mpar tmen t: C oolant
ex pansion tank
Before you c heck anything in the eng ine compartment,
always read and heed all WARNINGS~ & in "Working in
the e ngine compartment" on
page 297.
- Turn off the ignit ion .
- Let t he eng ine cool down .
- Place a thick rag over the coolant expans ion tank
~ fig . 235 and carefully twist the cap counter ·clockwise
~ & -
Vehicle OP-eration
-Read the engine coolant level in th e open coo lant expan ·
sion tank ~ fig . 235 . With a cold engine, the coolant level
should be between the "min" and "max" ma rkings . Whe n
the engine is warm , the level may be slight ly above the
"max" marking .
The location o f the coo lant expansion tank can be seen in the engine
compartment illustration=>
page 298 .
To obt ain an accurate reading , the engine must be sw itched off.
Th e expans ion t an k in your vehicle is equippe d with an electric coolant
level sensor.
When the coolant lev el is too low, the warning light in the Auto·Check
System=>
page 30 will blink until you add coolant and t he level has
been resto red to normal. Even though there is an electric coolant
level sensor, we st ill recommend you check the coolant leve l from
time to time.
Coolant loss
Coolant loss may indicate a leak in the coo ling system . In the event of
coo lant loss , the cooling system sho uld be inspected immed iate ly by
your authorized Aud i dea ler . It is not enough mere ly to add coolant.
In a
s ealed system, losses can occu r only if the boiling point of the
coolant is exceeded as a result of ove rheating .
& WARNING
The cooling system is under pressure and can get ve ry hot. Reduce
the ri sk of scalding from hot coolant by following the se steps.
• Turn off the engine and allow it to cool down .
• Protect your face, hand s and arms from e scaping fluid and
s team b y co ve ring the cap with a large, thi ck r ag.
• Turn the cap slowly and ver y carefully in a counter-clo ckwise
direction whil e applying light , downward pre ssure on the top of
thecap .
~
Vehicle care Do-it-yourselt service iTechnical data

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& WARNING (conti nu ed )
• To avoid being burned, do not spill antifreeze or coolant on the
exhaust system or hot engine part s. Under certain condit ion s, the
ethylene glycol in engine coolant can catch fire.
0 Note
Do not add any type of radiator leak sealant to yo ur vehicle's engine
c oo lant. Addi ng radia tor repa ir fluid m ay adverse ly affe ct the func­
tion and performance of your cooling system and could result in
damage not cove red by y our New Vehicle Lim ited Warr anty. •
Adding coolant
Be very careful when adding engine coolant.
Before you check anyt hing in th e eng ine co mpart ment ,
always read and heed all WARNINGS => & in "Wor king i n
t h e e ngine compa rtment" on
page 297.
- Tur n off the eng ine.
- Let t he engi ne c ool d ow n.
- Place a thic k rag over th e coolan t expans ion tank
=> pag e 305, fig. 235 and carefully twist t he cap cou nter ­
cl ockwi se
=> &.
- Add coo lant.
- Tw ist the ca p on aga in
tightly .
Replacement eng ine coolant must conform to exact specifications
=>
page 304, "Coolant". Even in a n emergency, if coolant addi tive
Gl2 ++, Gl2 + or Gl2 is not available, do not use a different addit ive.
Use plain wate r in st ead until you can get the cor rec t additive an d can
restore the correct ratio. This shou ld be done as soon as possible. If
you have lost a considerable amount of coolant, then you sho uld
a d d c old an tifr ee ze and cold wa ter only when the e ngine is cold.
Always use
new engine coo la nt when refilling.
Do not fill coolant above the "MAX" mark. Excess coolant will be
fo rced o ut thr ough the p re ssur e relief v alve in the c ap w hen the
eng ine becomes hot.
& 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
s team by covering the cap with a large, thi ck rag .
- Turn the cap slowly and very carefully in a counter-clockwise
direction while applying light, downward pre ssure on the top
of the cap.
- To avoid being burned, do not spill antifreeze or coolant on
the exh aust system or hot engine parts . Under certain condi­
tions , the ethylene glycol in engine coolant can catch fire.
• Antifreeze is poisonous. Always store antifreeze in its original
container and well out of the reach of children.
• If you drain the coolant , it mu st be caught and safely stored in
a proper container clearly marked "poison ".
0 Note
• Coolant poll utes the environment and could cause an engine fire.
Excess coolant w ill be forced o ut thro ugh the pressure relief va lve in
t he c ap when t he e ngine becomes hot.
• If, i n an emergency, only water can be added, the co rrect ratio
between wate r and an tifreeze=>
page 304 mus t be res to red as soo n
as possib le. _..

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<£> For the sake of the environment
Dra ined coolant sho uld not be reused. A lways dispose of used coolan t
w hile observing a ll enviro nmental regulations .•
Radiator fan
T he radia tor fa n switc hes on a utoma tically by itself
The radiator fan is driven by the engine via the V-belt. The v iscous
cl utch reg ulates the spee d of t he fan accord ing to t he tem pera ture o f
the coolant.
An aux ili ar y e lec tric r adi ator fan* sw itches on and o ff depend ing o n
coo la nt temperat ure and other vehicle operating conditions.
After you switch the engine off, the auxiliary fan can continue r unning
for up to 10 minutes -eve n w it h t he igni tion o ff.
It can even swit ch on
again later by itse lf => & , if
• t he tem pera ture of the e ngi ne coola nt rises due to the hea t build­
up from the eng ine in the engine compa rtment, o r
• th e engine compar tmen t heats up because the ve hicl e is parked in
intense s unlight.
& WARNING
• To reduce the risk of personal injury never touch the radiator
fan .
• The auxiliary electric fan is temperature cont rolled and can
switch on suddenly even when the engine i s not running.
• The auxiliary radiator fan switche s on automatically when the
engine coolant reaches a certain temperatu re and will continue to
run until the coolant temperature drops. •
~ehicle OP-eration
Brake fluid
Checking brake fluid level
The brake flu id l eve l can be checke d with a quick gl ance .
Fig . 236 Engine
compa rtment : Brake
fluid rese rvoir
Before you check a nyt hin g i n th e eng ine compa rtment ,
always read and heed all WARNINGS~ & in " Working in
the e ng ine co mpartmen t" on
page 297.
- Read the brake fluid level f rom t he bra ke flu id reservoir
~ fig. 2 36 . The bra ke fluid leve l must be between the
" MIN " and "MAX" markings.
Th e brake fl uid rese rvoir is located at the rear partition of t he engine
compartment on the left side=>
page 298.
The fluid level may drop slightly after some time due to the auto­
m atic adjus tmen t of th e br ake pads. This is no t ca use for alarm .
If the brake fluid level falls
considerably below the "MIN" mark, t he
brake warn ing/i nd icator lig ht ( U.S. models :
BRAKE, Canadian mode ls:
ill ) will come on=> page 20 and=> page 29 . Do not continue to
operate the vehicle . The complete brake system s hould be thorough ly
che cked by an au thori zed Aud i dea le r o r q ua lified wor kshop a nd the
cause corrected.
If t h e brake fl uid leve l is too low, the brake .,,_
Vehicle care Do-it-yourselt service iTechnical data

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& WARNING (conti nu ed )
• Always wear eye protection. Do not let battery acid or any lead
particles get on your skin or clothing. Shield your eyes. Explo sive
gases can cause blindness or other injury.
• Battery acid contains sulfuric acid. Sulfuric acid can cause
blindnes s and severe burns .
- Always wear gloves and eye protect ion. Do not tilt the
battery because acid could leak out of the ventilation open­
ings.
- If you get battery acid in your eyes or on your skin , immedi­
atel y rinse with cold water for several minutes and get medical
attention.
- If you should ingest any battery acid, seek medical attention
immediately.
• Do not expose the battery to an open flame, elect ric sparks or
an open light .
• Do not smoke.
• Do not int erchange the positive and negative cab les .
• When working on the battery, be sure not to short-cir cuit the
terminals with tools or other metal obje cts. This would cause the
battery to heat up very quickly, which could lead to damage or
explosion and per sonal injury .
• When a battery is charged , it produces hydrogen gas which i s
e xplosive and could cause personal injury.
• Always keep the battery well out of the reach of children .
• Before work is done on the electrical system, disconnect the
negative ground cable.
• Befo re performing any work on the electrical system , swit ch
off the engine and ignition as well as any electrical equipment .
The negative cable on the battery must be disconnected. If you are
ju st going to replace a light bulb, then it is enough to switch off
the l ights.
& W ARNING (continued )
• Before di sconnecting the battery , switch off the anti-theft
alarm system! Otherwise you w ill set off the alarm .
• When disconnecting the battery, first disconnect the negative
cable and then the po sitive cable .
• Before reconnecting the battery , make su re all electri cal
consumers are sw itched off . Reconnect the positive cable first and
then the negative cable. Never interchange the cables - this could start a fire!
• Never charge a frozen or a thawed-out battery. It could
e x plode! If a battery has frozen, then it must be replaced. A
di scharged battery can freeze o ver at 32 °F (0 °C ).
• Make sure the vent hose is always attached to the open ing on
the side of the battery .
• Never use batte ries which are damaged . There is the danger of
an explosion! Alway s repla ce a damaged battery .
& WARNING
California Proposition 65 Warning:
• Battery posts , terminals and related accessorie s contain lead
and lead compounds, chemicals known to the State of California
to cause cancer and reproductive problems. Wash hands after
handling.
0 Note
• Do not disco nne ct the vehi cle battery when t he ign it ion is
switched on o r when the engine is running, otherwise, you wi ll
da mage e le ctronic compone nts in t he e lec trica l system .
• If your ve hicle is go ing to stan d for a long period of time witho ut
bei ng d rive n, protect the ba tte ry from "freezing", ot herwis e it w ill be
damaged and will then have to be replaced.•

Checking and filling -
-------------------=------=:;______,.J,,...
Battery charging
Starting the engine requires a well charged battery.
Fig. 237 Engine
compa rtment : Connec­
tor s for charger and
jumper cables
Always read and heed all WARNINGS below=> & and => &
in "Working on the battery" on
page 309.
- Turn off the ignition and all electrical consumers.
- Make sure the area is well ventilated when you charge the
battery.
- Open the hood :::::,
page 296.
-Open the red cover on the positive pole =>fig. 23 7.
- Connect the charger connectors according to the instruc-
tions to the
jump start bolts . (Bolts under the red cover=
"positive", Bolts with hex head
= "negative") .
- Only now plug the mains lead for the charging equipment
into the wall outlet and turn it on =>& .
-Make sure the charging rate is not over 30 amps/14.8
Volt.
- When the battery is fully charged: Turn the charging
equipment off and remove the mains lead from the wall
outlet.
Vehicle OP-eration
-Now remove the clamps for the charging equipment.
- Close the red cover on the positive pole.
- Close the hood :::::,
page 297.
A discharged battery can freeze at temperatures of only O 0C. Allow a
frozen battery to thaw completely before attempting to charge it
~ & .However, we recommend not using a thawed battery again
because the battery casing can be cracked due to ice formation and
can leak battery acid.
Battery charging (Maximum charging rate of 30
amps/14.8 Volt)
When charging at low voltages (e.g. with a trickle charger ), the
battery cables do not have to be disconnected first . The battery caps
sho uld
not be opened when charging a battery.
It is not necessary to remove the battery from the luggage com part·
ment.
Fast charging the battery (charging rate above 14.8
Volts)
For technical reasons do not use a battery charger that uses voltage
greater than 14.8 Volts to charge your vehicle's battery .
& WARNING
Charging a battery can be dangerous.
• Always follow the operating instructions provided by the
battery charger manufacturer when charging your battery.
• Never charge a frozen battery. It may explode because of gas
trapped in the ice. Allow a frozen battery to thaw out first.
• Do not reuse batteries which were frozen. The battery housing
may have cracked and weakened when the battery froze.
• Charge the battery
in a well ventilated area. Keep away from
open flame or electrical spark. Do not smoke. Hydrogen gas gener-
ated by the battery is explosive. •
Vehicle care Do-it-yourselt service Technical data

-Checking and filling .,,,, _ _..::::.__-=-----------------
& WARNING (continued)
• To reduce the danger of explosion, never connect or disconnect
charger cables while the charger is operating.
• Fast charging a battery is dangerous and should only be
attempted by a competent technician with the proper equipment.
• Battery acid that may spill during charging should be washed
off with a solution of warm water and baking soda to neutralize
the acid.
0 Note
Never use a fast charger as a booster to start the engine. This will seri­
ously damage sens it ive electronic components, such as control units,
relays, radio, etc ., as well as the battery charger.•
Battery replacement
The new battery must have the same specifications and
dimensions as the original equipment battery.
Intelligent energy management in your veh icle is responsible for
distributing the electrical energy throughout your vehicle
~ page 259. T he intelligent energy management system will keep
the engine battery charged better then vehicles without this system .
To make sure the additional electrical energy is available once again
after you have changed the battery, we recommend that you install
batteries of the same type and manufacture only (the same as those
installed at the time your vehicle was delivered). Specifications are
listed on the battery housing. Your authorized Audi dealer will then
code the battery management control unit.
If it is not poss ible to use a battery of this type, the new battery must
have the same capacity, vo ltage (12 volts), amperage, construction
and plug sea ling .
When installing the battery, make sure the ignition and all electrica l
consumers are turned off.
0 Note
Make sure the vent ilation hose on the side of the battery is
connected, otherwise fumes or battery acid can leak out.
Because of the problem of proper disposal of a battery, we recom­
mend your authorized Audi dealer change the battery for you.
Batteries contain sulfuric acid and lead and must always be disposed
of properly in compliance with all environmental regulat ions.
Disposing of vehicle batteries improperly is very dangerous to the
environment. •
Windshield/headlight washer
container
Fig. 238 Engine
com partm ent : Wind·
shield and headlight"
wash er fluid container
The washer fluid container is marked with the symbol~ on
its cap.
- Before you check anything in the engine compartment,
always read and heed all WARNINGS~ & in "Working
in the engine compartment" on page
297. ..,_

Checking and filling --------------~--EMI
- Lift the filler cap tongue to add washer fluid . You can fill
the container to the top .
- Press the cap back onto the filler neck after filling the container.
You can find the reservoir capacit y in the table in=:> page 363.
To prevent lime residue from bu ilding up on the spray jets, use
distilled water when refilling. Always add a g lass cleaner so lution
(with frost protection in the w inter) .
0 Note
Do not mix engine coolant antifreeze or any other additives to fill up
the windshie ld washer reservo ir .•
Safety first Vehicle care Technical data

________________________________________________ T_i_re _ s_ a _ n_d_ w_ h_ e_ e_l_s __ _
If you wish to improve comfort when operating the vehicle at
normal load (up to 3 o ccupant s), you can adjust tire pres sures to
those specified for normal vehicle load . Before operating the
vehicle at maximum lo ad, you must increase the tire p res sures to
those specified for maximum vehicle load=>& .
Bear in mind that the tire press ure monitor ing system can only
mon itor the t ire pressu re s you h ave sto red . T he sys tem does no t
recogn ize the load cond it ion of your vehicle.
Th e effectiveness of t he tire pressu re monitoring system will be
impa ired if you store normal load pressu res but then operate the
vehicle at its maxim um loa d=> & . See the
illustration=> fig. 239 for the location of the label on driver's
side B- pillar (colo r of the act ual la bel and ex act l ocation on the
vehicle will vary slig htly).
N ote that the fo llow ing tab le is accurate at the time of going to press
and is subjec t to change. I n the even t of discrepancies , the tire pres­
sure label located on the dr iver's side B-pi llar a lways takes prece­
dence .
T he table below lists the recommended cold t ire inflation pressures
for the Audi model covered by your Owne r's Literature at t he ve hicle's
capac ity weight and the tire sizes insta lled on the respective models
as original equipment, or as a factory option .
Engine Tire designation Tire pressure front Tire pressure rear
(displace- normal load normal load
ment in
liter) condition
(up
full load condition (up
full load
to
3 occu- condition to 3 occu- condition
pants) pants)
PSI kPA PSI PSI kPA PSI kPA
255/55 R18 109H XL All Season 35 240 44 300
35 240 49 340
6-cylinder
265/50 R19 110H XL All Season
35 240 44 300 35 240 49 340 3.0 TDI/3
.6
and 275/45 R20 110H XL All Season 3 5 24 0 44 3 00 35 240 4 9 340
a-cylinder
275/45 R20 llOY XL High Performance 35 240
44 300
35 240 49 340 4
.2
295/35 R2110 7Y XL High Performance
36 250 44
300 35 240 49 340
XL= reinforced or extra load tire
. It may also appear as xi , EXTRA LOAD, or RF on the tire sidewall .
The correct tire p ress ure for t he spare wheel is loca ted on a labe l o n
the driver 's s ide B-pillar.
Beca use technical c hanges may be made to vehicle equipment dur ing
the model year, always compare the tire size des ignation on the t ire
pressu re labe l on yo ur vehicle with the t ires on your vehicle. Make
sure that the tire size informat ion on t he v ehicle labe l is the same as
the size of the t ires o n the vehicle. This is especially important if the
vehicle belongs to so meone else or you bo ug ht the vehicle with
Safety first
differe nt r im s/ tires or you bo ugh t the vehicle as a prev iously owned
vehicle.
Remember, yo ur safety and t hat of your passengers also depends o n
making sure that load limits are not exceeded. Vehicle load includes
everybody and everything in an d on the vehicle . These load limits are
t e chnically refer red to as the veh icle's G ross Veh icle Weig ht Rating
("GVW R"). The Gross Axle Weight Rati ng ("GAWR") is the maximum
load tha t can be applied at ea ch of the ve hicle's two ax les . T he G ross ..
Vehicle care Technical data