2012 AUDI Q7 engine

2 70 Chec king and filling
should only be disconnected from the vehicle
e lectrical system when absolutely necessary
for repairs.
Vehicles not driven for long periods
If you do not drive your vehicle over a pe riod
of several days or weeks, electrical compo­
nents are gradually cut back or switched off.
This reduces energy consumption and main ­
tains starting capab ility over a longer period
c;, page225.
Take into consideration that when you un lock
your vehicle, some convenience functions, such as the interior lights or the power seat
adjustment, may not be available. The con­
venience functions will be available again
when you turn on the ignition and start the
engine .
Winter operation
During the winter months, battery capacity
tends to decrease as temperatures drop . This
is because more power is also consumed while
starting, and the headlights, rear window de ­
fogger, etc., are used more often .
Avoid unnecessary power consumption, par­
ticularly in city traffic or when traveling only
short d istances . Let your authorized Audi
dealer check the capacity of the vehicle bat­
tery before w inte r sets in
¢ page 271. A well
cha rged battery w ill not only prevent starting
p rob lems when the weather is cold, but will
a lso last longer.
(D Tips
If your vehicle is left standing for several
weeks at extremely low temperatures, the
vehicle battery should be removed and
stored where it will not freeze . This wi ll
prevent it from being damaged and having
to be replaced.
Working on the battery
Be especially careful when working on or near
the battery.
The battery is located under the driver 's seat.
Before you check anyth ing under the driver 's
seat,
read and heed all WARNINGS c:;, _&.
Always heed the safety warnings, when work­
ing on the vehicle battery or the vehicle elec­
trical system to prevent injury.
The following WARNINGS are very
important when working on the battery:
Always heed the following WARNING SYM­ BOLS and safety precautions when working
on the battery.
@!) Always wear eye protection .
b.. Battery acid contains sulfuric acid . Al­
~ ways wear gloves and eye protection.
~ No
\!:51 -sparks
- flames
- smoking.
A. When a battery is charged, it produces
~ hydrogen gas which is explosive and
could cause personal injury.
~ Always keep the battery well out of
~ reach of children.
,&. WARNING
Whenever working on the battery or on
the electrical system, there is the risk of
injury, accident and even fire . Read and
heed the following WARNINGS:
- Always wear eye protection. Do not let
battery ac id or any lead particles get on
your skin or clothing. Shield your eyes .
Exp losive gases can cause blindness or
other injury.
- Battery acid contains sulfuric acid. Sulfu­
ric acid can cause blindness and severe
burns.
- Always wear g loves and eye protection.
-
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, immediately 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, electric sparks or an open light.
- Do not smoke.
- Do not interchange the positive and neg-
ative cables.
- When working on the battery, be sure
not to short-circuit the terminals with
tools or other metal objects. This would cause the battery to heat up very quickly,
which could lead to damage or explosion
and personal injury.
- When a battery is charged, it produces hydrogen gas which is explosive and
could cause personal injury.
- Always keep the battery well out of the
reach of children.
- Before work is done on the electrical sys­ tem, disconnect the negative ground ca­
ble .
- Before performing any work on the elec­
trical system, switch off the engine and
ignition as well as any electrical equip ­
ment . The negative cable on the battery
must be disconnected. If you are just go­
ing to rep lace a light bulb, then it is
enough to switch off the lights.
- Before disconnecting the battery, switch
off the anti-theft alarm system! Other­
wise you will set off the alarm.
- When disconnecting the battery, first
disconnect the negative cable and then
the positive cable.
- Before reconnecting the battery, make
sure all electrical consumers are switch­
ed off. Reconnect the positive cable first
and then the negative cable. Never inter­
change the cables -this could start a fire!
- Never charge a frozen or a thawed-out
battery. It could explode! If a battery has
frozen, then it must be replaced. A dis-
Checking and filling 2 71
charged battery can freeze over at 32 °F
(0 oc) .
-Make sure the vent hose is always attach­
ed to the opening on the side of the bat­
tery .
- Never use batteries which are damaged.
There is the danger of an explosion! Al­
ways replace a damaged battery.
A WARNING
California Proposition 65 Warning:
- Battery posts, terminals and related ac­
cessories contain lead and lead com­ pounds, chemicals known to the State of
California to cause cancer and reproduc ­
tive problems . Wash hands after han­
dling.
(D Note
- Do not disconnect the vehicle battery
when the ignition is switched on or when the engine is running, otherwise, you will
damage electron ic components in the
electrical system.
- If your vehicle is going to stand for a
long period of time without being driven,
protect the battery from "freezing", oth­
erwise it will be damaged and will then
have to be replaced.
Battery charging
Starting the engine requires a well charged
battery.
Fig. 235 E n gin e compart men t: Co nnectors fo r charger
and j umper ca bles ..,_

Battery replacement
The new battery must have th e sam e specifi­
cations and dim ensions as the original equip­
ment battery.
Intell igent energy management in your vehi­
cle is respons ible for d istr ibuting the e lectr i­
cal energy throughout your vehicle
¢
page 225. The intel ligent e nergy ma nage­
men t system w ill keep the eng ine ba tte ry
ch arged be tte r th en vehicles w ithout t his sys ­
tem . To make sure the additional e lectrica l en ­
e rgy is available once again after you have
changed the battery, we recommend that you install batteries of the same type and man u­
facture only (the same as those installed at
the time your vehicle was delivered). Specifi­
cations a re listed on the battery hous ing . Your
author ized dealer must code the battery in
the energy manageme nt system to enable yo u
to use the energy managemen t fu nctions co r­
rectly after rep lac ing the b attery .
If it is not poss ible to use a battery of this
type, the new battery must have the same ca­
paci ty, voltage ( 12 volts) , a mpe rage , con ­
s truc tion and pl ug sea ling.
W hen insta lli ng the battery, make sure the ig­
ni tion and all e lectr ical c ons umers a re turned
off.
CD Note
Ma ke s ure the venti lation hose on the s ide
of the bat tery is connected, ot he rwise
fumes or ba ttery a cid c an leak out.
@, For the sake of the environment
Because of the probl em of proper d isposa l
of a batte ry, we recommend your autho r­
i z e d Au di d ealer change the batt ery f or
you. Batter ies co ntain s ulfu ric ac id and
lead and m ust always be dis posed of prop ­
erly i n complia nce w ith all environmenta l
reg ulations. D isposin g of vehicle batteries
improper ly is very dangerous to the envi­
ronment.
Checkin g and fillin g 273
Windshield/headlight
washer container
Fig. 2 36 En gin e compart ment: cover on t he w inds hield
a n d head lig ht* was her fl ui d reservo ir
The washer fluid conta iner is marked w ith the
symbol Won its cap ¢
fig. 236, ¢ page 260,
fig . 229 .
.. Before yo u check anything in the engine
compartment,
always read and heed all
WARNINGS ¢ &. in Working in the engine
compartment on page 258 .
.. Lift t he fi ller cap tongue to add washer flu­
id. You can fi ll the containe r to t he top .
.. Press the cap back o nto the fi lle r ne ck afte r
filling the container.
You can find the reservo ir
capacity in t he table
in
¢ page 316.
Clean water should be used when filling up . If
poss ible , use soft water to prevent scaling on
the washer jets. A lways add a glass cleane r
solution (with frost pro te ction in t he winter).
CD Note
Do not mix engine coo lant antifreez e or
a ny other addit ives to f ill up t he win d­
sh ield washer rese rvo ir.
•
•

Tires an d wheel s 2 79
change. In the event of discrepancies, the tire
pressure label located on the driver's side 8-
p ill ar a lways takes precedence.
The table be low lists the recommended cold
tire inf lation pressures for the A udi model
I Engine Tire designation
covered by your Owner 's Literat ure at the vehi­
cle's capacity weight and the tire sizes instal­
l ed on the respect ive models as orig inal
equipment, or as a factory option.
Tire pressure
normal load condition full load condition front rear front rear
I
PSI II kPA PSI kPA PSI j[ kPA PSI kPA
2 55/5 5 Rl8 109H XL
All Sea son
265 /50 Rl9 ll0H XL
All Sea son
3.0 /3 .0 TDI 275 /45 R20 ll0H XL
6 -cy lind er All S ea son
275 /45 R20 110V XL
High Performance
295 /35 R21 107V XL
High Performance
35 240 35
35 240 35
35 240 35
35 240 35
36 250 35 240
44
300 49 340
240 44 300 49 340
240 44 300 49 340
•
240 44 300 49 340
I
240 44 300 49 340
XL= reinforced or extra load tire. It may also appear as xl, EXTRA LOAD, or RF on the tire side­
wall.
The correct tire pressure for the spare wheel i s
l ocated on a label on the driver's side 8-pilla r.
Because technical changes may be made to
vehicle equ ipment dur ing the model year , al­
ways compare the tire size designation on the
tire pressure label on your vehicle w ith the
tires on you r vehicle. Ma ke su re that the tire
si ze information on the ve hicle label is the
same as the s ize of the t ires on the vehicle.
This is especially important if the vehicle be­ l ongs to someone else or you bought the vehi­
cle with different rims/tires or you bought the
ve hicle as a previously owned vehicle.
Remember, your safety and that of your pas­
sengers also depends on making sure that
l oad limits are not exceeded. Vehicle load in­
cludes everybody and everything in and on the
vehicle. These load limits are technically refer­ red to as the vehicle's Gross Vehicle We ight
Rating ("GVWR") . The Gross Axle Weight Rat­
i ng ( "GAWR") is the maximum load that can
be appl ied at each of the veh icle's two axles.
The G ross Vehicle Weight Rating and the Gross Axle Weig
ht Rating are listed on the
safety comp liance sticker label located on the
drive r's side 8-pillar . The tire pressure labe l on
yo ur A udi lists t he maxim um combined
weight of all o f the occ upants and luggage or
othe r cargo that t he vehicle can carry. Fo r the
location of the tire press ure label ¢
fig. 23 7.
A WARNING
Overloading a vehicle can cause loss of ve­
h icle control, a crash or other accident, se­
rious personal injury, and even death.
- Carrying more we ight than your veh icle
was des igned to carry will prevent the
veh icle from handling properly and in­
crease the risk of a loss of vehicle con­
trol.
- The brakes on a vehicle that has been overloaded may not be able to stop the
veh icle w ith in a safe distance.
- T ires on a vehicle that has been overload ­
ed can fail suddenly ca using loss of con-
trol and a crash . ..,.
•
•

2 96 What do I do now ?
plate. If this happens, the vehicle may
start to move while a wheel is being changed.
- Never use the folding chocks if they are
damaged or if they have not been assem­
bled correctly.
A WARNING
Improper use of the vehicle jack can cause
ser ious persona l injuries.
- Never use the jack supplied with your Au­
di on anothe r vehicle, pa rticularly on a
heavier one. The jack is only suitable for
use on the vehicle it came w ith.
- Us ing a bumper jack to raise the vehicle
will damage the bump er system. The
jack may slip, causing in jury.
- Never support your veh icle on cinder
blocks, b ricks or other objec ts. These
may no t be ab le to suppor t the load and
c ou ld cau se injury whe n they fail.
- Never start o r run the engine while the
vehicle is supported by the j ack.
- If you must wo rk under the vehicle, al­
ways use safety stands specifically de­
signed for this purpose.
- Always make su re the inf latable spare
ti re and even a flat tire a re se cu red in
pla ce and not loose, otherwise t hey
c ou ld f ly forward, causing personal in jury
to passengers in the veh icle in an acc i­
dent o r sudden mane uver.
Removing bass box
Applies to vehicles: with bass box
Before the inflatable spare tire can be taken
out, the bass box must be removed .
Fig. 247 Spare wheel well: Bass box
Removing bass box
" Squee ze the locking tabs ¢ fig. 247 (!) of
the connector .
" Disconnect the connector @and place the
lead to one side.
" Turn t he large screw counter-clockwise.
" Carefully
remove the bass box.
Installing bass bo x
" Carefully place the bass box in the wheel.
The insc ription " FRO NT" on the bass box
m ust face forward .
" Reconnect the connector that was removed.
" Secure the bass box with t he large screw.
· Inflatable spare tire
The inflatable spare tire expands to its full di­
ameter when it is inflated.
Fi g. 2 48 In flatable spare t ire w ith compressor
Removing inflatable spare tire
" Lift up the cargo floor us ing the handle .
" Tu rn the large screw¢
fig. 248 co unter-
clockwise.
" Remove the bass box as required
¢page 296.
" Take out the inflatable spare tire .
" Always sto re the vehicle tool kit, the jack
and the replaced tire in the luggage com­
partment
¢page 166.
Stowing the inflatable spar e tire
" Release the air by unscrewing the valve
stem.
" Screw the
valve stem back in afterwards .
" Wait a few hours befo re p lacing the wheel
in the spare whee l we ll
r=:, _.&.
" Install the bass box as required r=:, page 296 . ..,.

2 98 What do I do now?
The compressor must not be connected to
the c igarette lighter socket, as this socket
does not provide the required power.
Changing a wheel
Before changing a wheel
Observe the following precautions for your
own and your passenger's safety when chang­
ing a wheel.
• After you experience a tire failure, pull the
car well away from moving traffic and try to
reach
level ground before you stop r::::> /.1. .
• All passengers should leave the car and
move to a safe location (for instance, behind
the guardrai l)
r::::> /.1. .
• Engage th e parking brake to prevent your
vehicle from rolling unintentionally
r::::> /.1. .
• Move selector lever to position P r::::> /.1..
• If you are towing a trailer: unhitch the trail­
er from your vehicle .
• Block the diagonally opposite wheel with
the fo ld ing chocks or other objects .
• Take the
jack and the inflatable spare tire
out of the luggage compartment
r::::>page 295.
& WARNING
You or your passengers cou ld be injured
while changing a whee l if yo u do not fol­
low these safety precautions :
- If you have a flat tire, move a safe dis ­
tance
off the road. Turn off the engine,
turn the emergency flashers on and use other warning devices to alert other mo­
torists .
- Make sure that passengers wait in a safe
place away from the vehicle and well
away from the road and traff ic .
- To help prevent the vehicle from moving
suddenly and possibly slipping off the
jack, always fully set the parking brake
and block the whee l diagonally opposite
the whee l being changed with the fold­
ing chocks or other objects. When one front wheel is lifted
off the ground, plac­
ing the Automatic Transmission in "P"
(Park) will
not prevent the vehicle from
moving .
- Before you change a wheel, be sure the
ground is level and firm. If necessary,
use a sturdy board under the jack.
- After installing the inflatable spare tire,
make sure that you replace the flat tire/
wheel in its storage area properly and
tighten the knurled retaining screw se­
curely.
Changing a wheel
When you change a wheel , follow these ­
quence described below step-by-step and in
exactly that order.
1. Activate the vehicle jack mode (only vehi­
cles w ith Adaptive Air Suspens ion)
r::::> page 154.
2. Remove the decorative wheel cover*. For
more details see also
r::::> page 299, Deco­
rative wheel covers or r::::> page 299,
Wheels with wheel bolt caps.
3. Loosen the wheel bolts r::::>page 299 .
4. Locate the proper mounting point for the jack and align the jack below that point
r::::>page 300.
S. Lift the car with the jack r::::> page 300.
6. Remove the wheel with the flat tire and
then insta ll the
inflatable spare tire
r::::>page 301.
7. Tighten all wheel bolts lightly.
8.
Lower the vehicle with the jack.
9. Use the wheel bolt wrench and
firmly
tighten all wheel bolts r::::> page 299.
10. Rep lace the decorative wheel cover*.
11. De activate the vehicle jack mode (only ve­
hicles wi th Adaptive Air Suspension)
r::::> page 154.
& WARNING
Always read and follow all WARNINGS and
in format ion
c:::> &. in Raising the vehicle on
page 301
and c:::> page 302.

306 Fuses and bulbs
Right luggage compartment fuse assignment
0
Fig. 259 Rig ht luggage compartment: fuse panel with plastic clip
Fu se pa nel @ (bla ck )
2
3 Fuel filler door detection
5 Parking system Inte lligent power module con-
6 venience 2
(right side of vehicle)
~
Intelligent power module con-
7 venience 2
(left side of vehicle)
9
L uggage compa rtment electri-
cal outlet
I Intelligent power module con-
10 venience 1 (right side of vehicle)
1 1 Convenience contro l mod ule
In telligent power module con-
12
venience 1
(left side of vehicle)
-Fuse panel © (red)
1 Radio
3 Digital Signal Processing (DSP)/
BOSE amplifier
4 Bang & Olufsen amplifier
s Ride height ad justment
6 Soft close 30
5
15
15
20
20 1 5
30
7,5/3 0
30
30 1 5
20
No . Consumer
7 Power rear lid
8 Power rear lid
9 Trailer hitch
15
10 Trailer hitch (left side of vehicle)
1 1 T
railer hitch (right side of veh i-
20
de)
Bulbs
Replacing light bulbs
For your safe ty, we recommend that you hove
your authorized Audi dealer replace burned
out bulbs for you.
It i s becom ing increasing ly more and mo re
diffic ult to replace vehicle ligh t bu lbs since in
many cases, other parts of the car must fir st
be removed befo re you are able to get to the
bulb. This applies especially to the light bulbs
in the front of your car which you can only
r each th rough the engine compartment .
Sheet meta l and bu lb holders can have sharp
edges that can cause serious cuts, and parts
must be correctly taken apart and then prop­
erly put back together to help prevent break ­
age of pa rts and long term damage from wa­
te r that can enter housings that have not been
properly re sea led. ..,.

For your safety, we recommend that you have
your authorized Audi dealer replace any bulbs for you, s ince your dealer has the proper tools,
the correct bu lbs and the expertise.
G as discharg e lamps (Xenon li ght s)*:
Due to the high elect rical voltage, have the
bu lbs rep laced by a qualified technician.
H eadlights with Xenon light can be identified
by the high voltage sticker .
~ WARNING
Contact with high-voltage components of
the electrical system and improper re­
placement of gas discharge (Xenon) head­
light bulbs can cause serious personal in­
jury and death .
- Xenon bulbs are pressurized and can ex­
plode when be ing changed.
- Chang ing Xenon lamps requires the spe­
c ial train ing, instructions and equip­
ment.
- Only an authorized Aud i dea ler or other
qualified workshop should change the
bulbs in gas discharge lamps.
A WARNING
There are parts with sharp edges on the
openings and on the bulb holde rs that can
cause se rious cuts.
- If you are uncertain about what to do,
have the work performed by an author­
ized Audi dea le r or other qua lified work­
shop. Serious persona l injury m ay result
from improperly performed work .
@ Tips
-If you must rep lace the light bu lbs your­
se lf, always remembe r that the engine
compartmen t of any vehicle is a hazard­
ous area to work in . Always read and
heed all WARNINGS
~ page 248, Engine
comportment ¢.& .
-It is best to ask your authorized A udi
dealer whenever you need to change a
bulb.
Fu ses and bulb s 307
•
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