2014 AUDI Q7 air condition

For year-round driv ing, antifreeze is added at
the factory for temperatures down to:
- - 31 °F (- 35 °C) USA
- - 40 °F ( - 40 °C) Canada .
If you mus t add coolant, use a mixture of wa­
ter and coolant additive. Mixing the coolant
additive with distilled water is recommended .
A WARNING
-
Before you check anything in the engine
compartment, always read and heed all
WARNINGS ¢
A in Working in the engine
compartment on page 257.
(D Note
-Before winter sets in, have the coolant
checked to see if the coolant additive in
your vehicle is sufficient to meet the cli­
mate conditions. This is especially impor­
tant if you live in a region where the win­
ter is extremely cold.
If necessary, in­
crease the proportion of coolant additive
to 60%.
- When adding coolant additive to your
cooling system, remember:
- We recommend using only coolant ad­
ditive Gl2++ or G13 for your vehicle.
This coolant additive is available at au­
thorized Audi dealers. Other types of
antifreeze can significantly reduce cor­
rosion protection . The resulting corro­
sion can cause a loss of coolant and se­
rious engine damage.
- Do not add any type of radiator leak seal­
ant to your vehicle's engine coolant.
Adding radiator repair fluid may adverse­
ly affect the function and performance of
your cooling system and could result in damage not covered by your New Vehicle
Limited Warranty.
Checking and filling 265
Checking the engine coolant level
T he engine coolant level can be checked with
a quick glance.
Fig. 245 En gin e compar tment: Coolant expansion tank
Before you check anything in the engine com­
partment,
always read and heed all WARN­
INGS ¢ A in Working in the engine comport­
ment on page 257 .
.,. Park your vehicle on a level surface.
.,. Turn
off the ignition .
.,. Let the engine cool down.
.,. Place a thick rag over the coolant expans ion
tank ¢
fig. 245, c> page 259, fig. 241 and
carefully twist the cap counter-clockwise
¢,&. .
.,. Read the engine coolant level in the open
coolant expansion tank. With a cold engine,
the coolant level should be between the
"min " and "max" markings. When the en­
gine is warm, the level may be slightly
above
the "max" marking.
The location of the coolant expansion tank
can be seen in the engine compartment illus­
tration
¢ page 259 .
To obtain an accurate reading, the engine
must be switched
off.
The expansion tank in your vehicle is equipped
with an electric coolant level sensor .
When the coolant level is too low, the warning
light in the Auto-Check System¢
page 32 will
blink until you add coolant and the level has
been restored to normal. Even though there is
an electric coolant level sensor, we still rec­ ommend you check the coolant level from
time to time .

278 Tires and wheels
you have stored. The system does not recog­
nize the load condition of your vehicle.
The effectiveness of the tire pressure monitor­
ing system w ill be impaired if yo u store nor­
mal load pressures but then operate the vehi ­
cle at its maximum load¢.&. .
See the illustration¢
fig. 249 for the location
of the label on driver's side 8-pillar (color of
the actua l label and exact location on the ve­
hicle wi ll vary slightly).
Note that the following table is accurate at
the time of going to press and is subject to
Model/ Tire designation
change. In the event of discrepancies, the tir e
pressure label located on the driver's side 8-
pillar always takes precedence.
T he table below lists the recommended cold
ti re inflation pressures for the Audi mode l
covered by your Owner's Literature at the vehi­
cle's capacity weight and the t ire sizes instal­
l ed on the respective models as original
equipment, or as a factory option.
Tire pressure
Engine normal load condition full load condition
front rear
front rear
PSI kPA PSI kPA PSI kPA PSI kPA
255/55 Rl8 109H XL
35 240 35 240 44
300 49 340 All Season
265/50 Rl9 llOH XL
35 240
35 240
44
300 49 340 All Season
Q7: 275/45 R20 llOH XL
3 .0 liter
35 240
35 240 44
300 49 340 All Season
6-cylinder
275/45 R20 llOYXL
35 240 35 240 44 300 49 340 High Performance
295/35 R21 107V XL
36 250 35 240 44 300 49 340
High Performance
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 is
located on a label on the driver's side 8-p illar .
Because technical changes may be made to
vehicle equipment 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 your vehicle. Make sure that the tire
size info rmation on the vehicle label is the
same as the size of the tires 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
vehicle as a previously owned vehicle.
Remember, your safety and that of yo ur pas­
sengers also depends on making s ure that load
limits are not exceeded . Veh icle load in­
cludes everybody and eve ryth ing in and on the
vehicle. These load limits are techn ica lly refer­
red to as the veh icle's Gross Vehicle Weight
Rating ("GVWR"). The Gross Axle We ight Rat­
ing ("GAWR") is the maximum load that can
be applied at each of the vehicle's two ax les.
The Gross Vehicle Weight Rating and the Gross Axle Weight Rating are listed on the
safety comp liance sticker label located on the
driver's side 8-pillar . The tire pressure label on
your Audi lists the maximum combined
weight of all of the occupants and luggage or
other cargo that the veh icle can carry . For the
location of the tire pressure label¢
fig. 249. ..,_

contribution to good road holding and safe
handling when in good condition and properly
inflated
¢ .&. .
We recommend that all work on t ires and
wheels be performed by an authorized A udi
dealer. They are familiar with recommended
procedures and have the necessary spec ial
too ls and spare parts as we ll as the proper fa ­
cilities for dispos ing of the old tires .
Authorized Audi dealers have the necessary information about techn ica l requ irements for
installing or changing tires and r ims.
R eplacing t ires and wheel s
Tires shou ld be rep laced at least in pairs and
not individua lly (for example both front tires
or both rear tires together).
Be s ure to read and heed the information to
the tire pressure monitoring system
¢page 291.
Always buy rep lacement radial tires that have
the same specifications as the t ires approved
for your ve hicle by Audi. Replacement tires
must always have the same load rating speci ­
fication as the original equipment or approved
optional tires listed in the table
¢ page 277.
Aud i-approved specification tires are specially
matched to your vehicle and its load limits,
and can contribute to the important road hold­
ing, driving character istics, and safety of the
veh icle. The table
(¢page 277) lists spec ifica­
tions of the t ires approved for the Audi mod­
e ls covered by your Owner's Literature .
The tire pressure labe l located on the driver's
side B-pillar
¢ page 2 77, fig. 250 lists the
specif ications of the or iginal equipment tires
installed on your vehicle at the time it was
manufactured.
Federal law requires t ire manufacturers to
p lace standard ized information on the s ide­
wall of all tires
¢ fig . 253 . This information
i dent ifies and desc ribes the fundamental
characterist ics, the quality grade of the tire
and a lso provides a tire ide ntificat io n number
Tire s an d wheel s 285
for sa fety standard certification and in case of
a reca ll.
Tire specifications
Knowledge of tire specifications makes it eas­
ier to choose the co rrec t tires . Radial ti res
have the tire specifications marked on the
sidewa ll, for examp le:
P255 / 55 R 18 109 H XL
This co nta ins the following information:
P Indicates the tire is for passenger cars
(where app licab le)
255 Nom inal tire width i n mm of the tire
from sidewall edge to sidewall edge. In
general, the larger the number, the wider
the tire
55 Height/w idth ratio in percent (aspect ra -
t io)
R Tire construct ion: Radial
18 Rim diameter code (i n inches)
10 9 Load ra ting code
H Speed ra ting letter code
XL (or "xl", "EXTRA LOAD", or "RF" Indicates
t h at the t ire is a"Re info rced" or an " Extra
Load " tir e
M+S (or "M/S") Indicates that the ti re has
some mud and snow capab ility
The tires could also have the informat ion of
direction of rotation ¢
page 273 .
Tire manufacturing d ate
The manufact uring date is also indicated on
the tire sidewall (possibly only on the
inner
s ide of the wheel):
"DOT ... 2213 .. . "means, for examp le, that
the tire was produced in the 22nd week of 2013.
Speed rating (letter cod e)
The speed rating letter code on the whee ls in­
dicates the maximum permissible road speeds
¢ .&. in Winter tires on page 289.
P up to 93 mp h (150 km/h)
Q up to 99 mp h (1 58 km/h)
R up to 106 mph ( 170 km/h)
•
•

286 Tires and wheels
S up to 110 mph (180 km/h)
T up to 118 mph (190 km/h)
U up to 124 mph (200 km/h)
H up to 130 mph (210 km/h)
V up to 149 mph (240 km/h)1l
Z over 149 mph (240 km/h)ll
W up to 168 mph (270 km/h)ll
Y up to 186 mph (298 km/h)
1
l
Your veh icle is normally factory equipped with
tires, which possess excellent driving charac­
teristics and give yo ur Audi opt imum d riving
comfort . An electronic speed limiter
c::> page 28 will normally prevent your vehicle
from going faster than the tire speed rating
¢ &. .
U.S. DOT Tire Identification Number (TIN)
and tire manufacture date
This is the tire's "serial number". It begins
with the letters "DOT" and indicates that the
tire meets all federal standards. The next two
numbers or letters indicate the plant where it
was manufactured, and the last four numbers
represent the week and year of manufacture.
For example, the numbers 2213 mean that
the tire was produced in the 22nd wee k of
2013. The other numbers are mar keting co­
des that may or may not be used by the tire
manufacturer . This information is used to con­
tact consumers if a tire defect requires a re­
call.
Audi Original tire
Tires with the identification "AO" or "RO" have
been specia lly matched with your Audi . We
recommend using only these tires because
they meet the highest standards regard ing
safety and driving character istics when used
correctly. Your authorized Audi dealer will
gladly provide you with more information.
Tire ply composit ion and materials used
The number of plies indicates the number of
l ayers of rubber-coated fabric in the tire. In
ll For tir es w it h a m ax im um spee d ca pabil ity ove r 149
mph (2 40 km/ h), ti re manufact urers somet imes use
the lett ers " ZR."
genera l, the greater the number of plies, the
more weight a tire can support. Tire manufac­
turers also must indicate the materials in the
t ir e, which include steel, nylon, po lyester, and
others.
Maximum Load Rating
This number ind icates the maximum load in
kilograms and pounds that can be carried by
the tire.
Tire quality grading for treadwear,
traction , and temperature resistance
Tread wear, traction and temperature grades
c::> page
287.
Maximum Permissible Inflation Pressure
Th is number is the greatest amount of air
pressure that should ever be put in the tire
u nder normal driving conditions.
.&, WARNING ~ -
-Using incorrect or unmatched tires and/
or wheels or improper tire and wheel
comb inat ions can lead to loss of control,
coll is ion and serious personal injury.
-Always use t ires, rims and whee l bolts
that meet the specifications of original
factory- installed tires or other combina­
tions that have been specifically ap­
proved by the vehicle manufacturer.
- Tires age even if they are not being used
and can fail suddenly, especially at high
speeds. Tires that are more than 6 years
old can only be used in an emergen cy
and then with special care and at lower
speeds.
- Never mount used tires on your vehicle if
you are not sure of their "previous histo­
ry." Old used tires may have been dam­
aged even though the damage cannot be
seen that can lead to sudden tire fa ilure
and loss of vehicle control.

-All four wheels must be fitted with radial
tires of the same type, size (rolling cir­
cumference) and the same tread pattern .
Driving with different tires reduces vehi­
cle handling and can lead to a loss of
control.
- If the spare tire is not the same as the
tires that are mounted on the vehicle -
for example with winter tires -only use
the spare tire for a short period of time and drive with extra care. Refit the nor­
mal road wheel as soon as safely possi­
ble.
- Never drive faster than the maximum
speed for which the tires on your vehicle
are rated because tires that are driven
faster than their rated speed can fail
suddenly.
- Overloading tires cause heat build-up,
sudden tire failure, including a blowout
and sudden deflation and loss of control.
- Temperature grades apply to tires that
are properly inflated and not over or un­
derinflated .
- For technical reasons it is not always
possible to use wheels from other
vehicles -in some cases not even wheels
from the same vehicle model.
- If you install wheel trim discs on the ve­
hicle wheels, make sure that the air flow
to the brakes is not blocked. Reduced air­
flow to the brakes can them to overheat,
increasing stopping distances and caus­
ing a collision.
- Run flat tires may only be used on
vehicles that were equipped with them at the factory. The vehicle must have a
chassis designed for run flat tires. Incor­
rect use of run flat tires can lead to vehi­
cle damage or accidents. Check with an
authorized Audi dealer or tire specialist
to see if your vehicle can be equipped
with run flat tires. If run flat tires are
used, they must be installed on all four
wheels . Mixing tire types is not permit­
ted.
Tires and wheels 287
@ Note
- For technical reasons, it is not generally
possible to use the wheel rims from oth­
er vehicles. This can hold true for wheels
of the same vehicle type.
- If the spare tire is different from the
tires that you have mounted on your ve­
hicle (for example winter tires or wide
profile tires), then use the spare tire for a
short period of time only and drive with
extra care. Replace the flat tire with the
tire matching the others on your vehicle
as soon as possible.
- Never drive without the valve stem cap .
The valves could get damaged.
(® For the sake of the environment
Dispose of old tires in accordance with the
local requirements.
Uniform tire quality grading
- Tread wear
- Traction AA A B C
- Temperature ABC
Quality grades can be found where applicable
on the tire side wall between tread shoulder
and maximum section width
¢ page 284,
fig. 253.
For example: Tread wear 200, Traction AA,
Temperature A.
All passenger car tires must conform to Feder­
al Safety Requirements in addition to these
grades.
Tread wear
The tread wear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specified
government test course.
For example, a tire graded 1S0 would wear
one and one half (1 1/2) times as well on the
government course as a tire graded 100. •
•

288 Tires and wheels
The relative performance of tires depends
upon the actual conditions of their use, how­
ever, and may depart significantly from the norm due to variations in driving habits, serv­
ice practices and differences in road character­
istics and climate.
Traction
The traction grades , from highest to lowest,
are AA, A, Band
C. Those grades represent the
tire's ability to stop on wet pavement as measured under controlled conditions on
specified government test surfaces of asphalt
and concrete . A tire marked C may have poor
traction performance ¢.&, .
Temperature
The tempera ture grades are A (the highest),
B, and
C, representing the tire's resistance to
the generation of heat and its ability to dissi ­
pate heat when tested under controlled condi­
tions on a specified indoor laboratory test
wheel.
Sustained high temperature can cause the
material of the tire to degenerate and reduce
tire life, and excessive temperature can lead
to sudden tire failure~.&, .
The grade
C corresponds to a level of perform ­
ance which all passenger car tires must meet under the Federal Motor Vehicle Safety Stand­
ard No.
109. Grades Band A represent higher
levels of performance on the laboratory test
wheel than the minimum required by law.
A WARNING
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration,
cornering, hydroplaning or peak traction
characteristics.
A WARNING
The temperature grade for this tire is es­
tablished for a tire that is properly inflated
and not overloaded . Excessive speed, un­
derinflation, or excessive loading, either
-
separately or in combination, can cause heat buildup and possible tire failure.
Winter tires
Winter tires can improve vehicle handling on
snow and ice. At temperatures below 45 °F (7 °C) we recommend changing to winter
tires.
In some heavy snow areas, local governments
may require true winter or "snow" tires, those
with very deeply cut tread . These tires should
only be used in pairs and be installed on all
four wheels . Make sure you purchase snow
tires that are the same size and construction
type as the other tires on your vehicle .
Your vehicle is equipped with all-wheel drive,
this will improve traction during winter driv ­
ing, even with the standard tires. However, we
strongly recommend that you always equip all
four wheels on your vehicle with correctly fit­
ted winter tires or all-season tires, when win­
ter road conditions are expected. This also im­
proves the vehicle's braking performance and
reduces stopping distances.
Summer tires provide less grip on ice and
snow.
Winter tires (snow tires) must always be fitted
on all four wheels.
Ask your authorized Audi dealer or qualified
workshop for permitted
winter tire sizes . Use
only radial winter tires.
Winter tires lose their effectiveness when the
tread is worn down to a depth of
O .15 7 inch
(4 mm).
Only drive with winter tires under winter con­
ditions. Summer tires handle better when
there is no snow or ice on the roads and the
temperature is above 45 °F (7
°().
If you have a flat ti re, see notes on spare
wheel¢
page 284 .
Please always remember that winter tires may
have a lower speed rating than the tires origi-
nally installed on your vehicle at the time it .,.

month and always before a long trip
¢ page 2 79, Checking tire pressure.
What you can do to avoid tire and rim
damage
L ow aspect ratio tires can be damaged more
easi ly by impact with potho les, curbs, gu llies
or ridges on the road, particularly if the tire is
underinflated.
I n order to minimize the occurrence o f impact
damage to the tires of your vehicle, we recom ­
mend that you observe the following precau­
tions :
- Always maintain recommended inflation
pressures. Check your tire pressure every
2,000 miles (3,000 km) and add air if neces­
sary.
- Drive carefully on roads with potholes, deep
gullies or ridges. The impact from driving
through or over such obstacles can damage
your tires. Impact with a curb may also cause damage to your tires.
- After any impact, immediately inspect your
t ires or have them inspected by the nearest
authorized Aud i dealer . Replace a damaged
t ir e as soon as possible .
- Inspect your t ires every 2,000 miles (3,000
km) for damage and wear . Damage is not al­
ways easy to see. Damage can lead to loss of
air and unde rinflation, wh ich could eventu­
ally cause tire failure. If you be lieve that a
tire may have been damaged, replace the
tire as soon as possible.
- These tires may wea r more quickly than oth­
ers.
- Please also remember that, while these tires
deliver responsive handling, they may ride
less comfortably and make more noise than
other choices .
Reduced performance in winter/cold
season conditions
All tires are designed for certain purposes .
The low aspect ratio, ultra high performance
tires originally installed on your veh icle are in ­
tended for max imum dry and wet road per­
formance and handling . They are not suitable
for cold, snowy or icy weather condit ions . If
Tires and wheels 2 91
you drive under those ci rcumstances, you
shou ld equip your vehicle with all-season or
winter tires, which offer better traction under
those conditions. We suggest you use the rec­ ommended snow or all-season t ires specified
for your vehicle, or their equivalent .
Refer to
¢ page 288 for more detailed infor­
mation regarding winter tires .
Tire pressure
monitoring system
ill General notes
Each tire, incl uding the spare (if provided),
shou ld be checked monthly when co ld and in­
flated to the inflation pressure recommended by the veh icle manufacturer on the veh icle
placard or tire inflation pressure label. (If your
vehicle has tires of a d ifferent size than the
s iz e indicated o n the vehicle placard or tire in­
flat io n pressu re lab el, you sho uld determine
the p roper tire inflation pressure for those
tires).
As an added safe ty feature, your veh icle has
been equipped with a tire pressure monito ring
system ( TPMS) that illuminates a low ti re
pressure telltale when one or more of your
tires is significantly under-inflated. According­
l y, when the low tire pressure te lltale illumi­
nates, you should stop and check your tires as
soon as possible, and inflate them to the
proper pressure . Driving on a sign ificantly un ­
der- inflated t ire causes the tire to overheat
and can lead to tire fa ilure. Under-inflation al­
so reduces fuel efficien cy and tire tread life,
and may affect the vehicle's hand ling and
stopping ability .
Please note that the TPMS is not a subst itute
for proper tire maintenance, and it is the driv­
er's responsibility to maintain correct tire
pressure, even if under-inflation has not
reached the leve l to tr igger illumination of the
T PMS low tire pressure tellta le .
Your vehicle has also been eq uipped with a
T PMS ma lfunction indicator to indicate when
the system is not operating properly. The
ll-
•
•

and avoid any hard steering or braking
maneuvers. Stop as soon as possible and
check the tires and their pressures. In·
flate the tire pressure to the proper pres­
sure as indicated on the vehicle's tire
pressure label ¢
page 2 77. Driving on a
significantly under-inflated tire causes
the tire to overheat and can lead to tire
failure. Under-inflation also is likely to
impair the vehicle's handling and stop­
ping ability.
- The driver is responsible for maintaining
the correct tire pressures. You must
check the tire pressures regularly.
- Under certain conditions (such as a spor­
ty driving style, winter conditions or un­
paved roads), the pressure monitor indi­
cator may be delayed.
- Ask your authorized Audi dealer if run­
flat tires may be used on your vehicle.
Your vehicle registration becomes invalid
if you use these tires when not permit­
ted. Damage to your vehicle or accidents could also result.
@ Tips
- The tire pressure monitoring system
stops working when there is an ESC/ABS
malfunction.
- Using snow chains may result in a system
malfunction.
- The tire pressure monitoring system on
your Audi was developed using tires with
the "AO" or "RO" identification on the
tire sidewall¢
page 284. We recom­
mend using these tires.
Reset tire pressure monitoring system
If the tire pressure is adjusted, wheels are ro­ tated or changed, the TPMS must be reset via
MMI.
.,. Before resetting the TPMS, the current pres ­
sures of all four tires must correspond to
the specified values. Adjust the tire pressure and reset the pressure in the tire pressure
Tires and wheels 293
monitoring system according to the load
you are carrying
¢ page 277.
.,. Turn on the ignition.
.,. Select:
!CAR I function button > Systems*
control button > Tire pressure monitoring >
Store now. Or
.,. Select:
!CAR I function button> Car systems*
control button > Servicing & checks > Tire
pressure monitoring
> Store tire pressures .
@ Tips
Do not store the tire pressure if there are
snow chains on the tire.
•
•