air condition AUDI S7 2013 Owner's Manual

258 Tires and wheels
contribution to good road ho lding and safe
handling when in good condition and properly
inflated
¢ ,& .
We recommend that all work on tires and
wheels be performed by an authorized Audi
dealer. They are familiar with recommended
procedures and have the necessary spec ial
too ls and spare parts as well as the proper fa­
cilities for disposing of the old tires.
Authorized Audi dealers have the necessary information about technical requ irements for
installing or changing tires and rims.
Replacing tires and wheels
Tires should be rep laced at least in pairs and
not individually (for example both front tires
or both rear tires together).
Be sure to read and heed the information to
the tire pressure monitoring system*
¢pa ge 264.
Always buy rep lacement radial tires that have
the same specifications as the tires approved
for your vehicle by Audi. Replacement t ires
must always have the same load rating speci­
fication as the original equipment or approved
optional tires listed in the table
c:> page 250.
Aud i-approved specification ti res are specially
matched to your vehicle and its load limits,
and can contribute to the important road hold­
ing, driving characteristics, and safety of the
vehicle. The table
(c:>page 250) lists specifica­
tions of the tires approved for the Audi mod­
els covered by your Owner's Literature .
The tire pressure label located on driver's side
B-pillar
(c:> fig. 197) lists the specifications of
the orig inal equipment tires installed on your
vehicle at the time it was manufactured.
Federal law requires tire manufacturers to
place standardized information on the s ide­
wall of all tires
c:> fig. 200. This information
identifies and describes the fundamental
characterist ics, the quality grade of the tire
and also provides a tire ident ificat ion number
fo r safety standard certificat ion and in case of
a recall.
Tire specifications
Knowledge of tire specifications makes it eas­
ier to choose the correct tires. Radial ti res
have the tire specifications marked on the
sidewa ll, for examp le:
255/40 R 19 100 H XL
This conta ins the following information:
P Indicates the tire is for passenger cars
(where app licable)
255 Nominal tire width in mm of the tire
from sidewall edge to sidewall edge. In general, the larger the number, the wider
the tire
40 Height/w idth ratio in percent (aspect ra-
t io)
R Tire construct ion: Radial
19 Rim diameter code (in inches)
100 Load rating code
H Speed rating letter code
XL (or "xl", "E XTRA LOAD" or "RF") Indica tes
that the tir e is a "Reinforced" or an "Ext ra
Load" t ire
M+S (or "M/5") Indicates that the tire has
some mud and snow capability
The tires could also have the information of
direction of rotat io n
¢ page 246.
Tire manufacturing date
The manufacturing date is also indicated on
the tire sidewall (possibly on ly on the
inner
side of the wheel):
"DOT ... 2212 ... " means, for example, the tire
was produced in the 22nd week of 2012.
Speed rating (letter code)
The speed rating letter code on the whee ls in ­
dicates the maximum permissible road speeds
c:> & in Winter tires on page 262.
p up to 93 mph (150 km/h)
Q up to 99 mph (158 km/h)
R up to 106 mph (170 km/h)
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)

260 Tires and wheels
-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.
- 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
~ fig. 200.
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.
Fo r example, a tire graded 150 would wear
one and one half (1 1/2) times as well on the
government course as a tire graded 100.
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
c::> & .
Temp erature
The temperature grades a re 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 materia l of the tire to degenerate and reduce
tire life, and excessive temperature can lead
to sudden tire fa ilure
c::> & .
The grade C corresponds to a level of perform­
ance which a ll passenger car tires must meet
under the Federal Motor Veh icle Safety Stand­
ard No.
109. Grades Band A represent higher
levels of performance on the laboratory test
wheel than the m inimum required by law .
&, WARNING
The traction grade assigned to this t ire is
based on stra ight-ahead b raking traction
tests, and does not include acceleration,
cornering, hydrop laning or peak traction
character istics .
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
separate ly or in combination, can cause
heat buildup and possible tire fa ilure.
Winter tires
Win ter tires can improve vehicle handling on
snow and ice. At tempera tures below 45 °F
(7 °C) we recommend changing to winter
tires.
In some heavy snow areas, loca l governments
may require true winter or "snow" tires, those
with very deeply cut tread. These t ires should
Tire s an d wheel s 261
only be used in pairs and be installed on all
fo ur wheels. Make sure you purchase snow
tires that are the same size and construction
type as the other tires on your vehicle.
If your vehicle is eq uipped w ith all -whee l
drive*, this wi ll improve traction during winter
driv ing, even with the standard tires. Howev ­
er, we strongly recommend that you always equip all four wheels on your veh icle w ith cor­
rectly fitted winter tires or all -season t ires,
whe n w inter road cond it ions are expected.
T his also improves the veh icle's brak ing per­
fo rmance and reduces stoppi ng d istances.
Summer tires provide less grip on ice and
snow .
Winter tires (snow tires) must always be fitted
on all four wheels.
Ask your authorized A udi dealer or qualified
workshop for permitted
wi nter ti re size s. Use
on ly rad ial winter t ires.
Winter tires lose their effectiveness when the
tread is worn down to a depth of
0 .1 57 inch
(4 mm).
Only drive w ith w inter tires under w inter con­
ditions. S umme r 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 tire, see no tes on spare
whee l c::> page 257.
Please a lways remember that winter tires may
have a lowe r speed ra ting than the tires o rig i­
nally installed on your veh icle at the time it
was man ufactured. P lease see
c::> pag e 258,
Speed rating (letter code) for a listing of the
speed rating letter codes and the max imum
speed at which the tires can be driven.
The speed rating le tter code
(c::> page 249) is
on the side wall of the tire
c::> page 257.
A WARNING
Winter t ires have maximum speed limits
that may be lower than yo ur vehicle's max­
imum speed. Always know the max imum
speed before dr iv ing off . Never dr ive faster
~
•
•

26 2 T ire s and wheel s
than the speed permitted for your specific
w inter t ires. This will cause damage to the
tires leading to an accident and serious
personal injury to you and your passen­
gers .
A WARNING
Driv ing faster than the maximum speed
for which the w inter t ires on your vehicle
we re designed can cause tire fai lu re in­
cluding a blowout and sudden deflat ion,
loss of control, crashes and serious per­
sonal injuries. Have worn or damaged tires
rep laced immediate ly .
- Winter tires have maximum speed rat ing
that may be lower than your veh icle's
maximum speed.
- Never drive faster than the speed for
which the winter or other tires installed
on your vehicle are rated.
A WARNING
Always adjust your driving to the road and
traffic conditions. Never let the good ac­
celeration of the winter tires and all-whee l
drive tempt you into taking extra r isks. A l­
ways remember :
- When brak ing, an all-w heel drive vehicle
hand les in the same way as a front drive
vehicle .
- Drive carefu lly and reduce your speed on
icy and slippery roads, even winter tires
cannot he lp under black ice condit ions .
@ For the sake of the environment
Use summer tires when weather cond i­
tions permit . They are quieter, do not wea r
as quickly and reduce f ue l consumption .
Snow chains
-
Snow chains may be fitted on ly to the front
wheels, and only to certa in tire sizes. Ask yo ur
author ized Audi dealer on wh ic h tire sizes
snow chains can be used.
If you are going to use snow chains, then you
must i nstall them on the front whee ls at
l east.
T he snow chains mus t have low-p rofile links
and must not be th icker than 0 .4 inch
(10,5 mm) , includ ing the lock .
Remove whee l cen ter covers and t rim discs
before pu tting snow c hains on your veh icle
¢ (D . For safety reasons cover caps m ust then
be fitted over the wheel bo lts. These are avail­
able from autho rized Aud i dealers .
A WARNING
Using the wrong snow chains for your veh i­
cle or installing them incorrect ly can in­
crease the risk of loss of contro l leading to
se rious pe rsonal injury.
- Snow chains are available in different
sizes . Always make sure to follow the in­
structions p rov ided by t he snow chain
manufacturer.
- W hen driving with s now cha ins never
driv e faster than t he speed permitted for
your specifi c snow chains.
- Always observe local regulations.
(D Note
-Remove snow chains before dr iv ing on
roads not covered with snow to avoid
damaging tires and wearing the snow
chains down un necessa rily.
- Snow chains, which come i nto direct con­
t act with the whee l rim, can scratch or
damage it. Therefo re, make sure that the
snow chains are s uitably covered. Check
t he pos ition o f th e snow cha ins afte r
dr iv ing a few yards and correct if ne ces ­
sary. Follow the inst ructions from the
snow chain ma nufactu rer when do ing so .
- If the Adaptive Air Suspens ion * sho uld
ma lf u nction, do not mount or use snow
chains because the vehicle wi ll be ex­
treme ly low. If you do drive with snow
chains on while the vehicle is at this lev­
el, t he snow cha ins might seve rely dam­
age the whee lhouse and o ther parts of
the vehicle.

264 Tire s and wheel s
In o rder 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 a ir if neces­
sary.
- Drive carefu lly 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
tires or have them inspected by the nearest
authorized Aud i dealer . Replace a damaged
t ire as soon as possible .
- In spect 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 underinflation, wh ic h could event u­
ally cause t ire fail ure.
If yo u be lieve that a
ti re may have been damaged, replace the
tire as soon as possible.
- These tires may wea r more qui ck ly than oth­
ers.
- Please a lso remembe r that, whi le these t ires
deliver respons ive handling, they may ride
less comfortably and make more noise than
other choices.
R educed p erformance in winter /cold
sea son conditions
A ll tires are designed for certain purposes .
The low aspect ratio, ultra high performance
tires originally installed on your vehicle are in­
tended for max imum dry and wet road per­
f ormance and handling . They are not suitable
for cold, snowy or icy weather cond it ions.
If
you dr ive under those circumstances, you
should equip your vehicle with all-season or
winter tires, whi ch offe r better traction under
those cond it ions . We suggest you use the rec ­
ommended snow or a ll-season tires specifie d
for your vehicle, or their equiva lent .
Refe r to ~
page 261 for mo re deta iled infor­
ma tion r egarding w in ter ti res.
Tire pressure
monitoring system
ill General notes
Applies to veh icles: w ith tire pressure monito ring system
Each tire, incl uding the spare (if provided),
sho uld be checked monthly when co ld and in ­
flated to the inf lat ion 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 ize indicated on the vehicle placard o r tire in­
flat io n pressu re label, you sho uld dete rmine
the p roper t ire infla tion p ressure fo r those
t ir es) .
As an added safety featu re, your ve hicle has
been equipped with a tire pressure mon itoring
system ( TPM S) that illum inates a low ti re
pressure te lltale whe n one or more o f you r
tires is signif icant ly under -inflated . Acco rding­
l y, when the low tire pressure te lltale i llumi­
nates, you shou ld stop and check your tires as
soon as possib le, and inflate them to the
proper pressure. Driving on a sign ificantly u n­
der- inflated t ire causes the tire to overheat
and can lead to tire fa ilure . Under -inflation al ­
so reduces fuel eff ic iency and tire tread life,
and may affe ct the vehicle 's hand ling and
stopp ing ability.
Please note that the TPMS is not a substitute
for proper tire ma intenance, and it is the d riv­
er's respo nsibility to maintain co rrect tire
pressure, even if under -inflation has not
reached the leve l to tr igger illuminat ion of the
T PMS low tire p ressu re tellta le .
You r vehicle has also been equipped with a
T PMS ma lf u nction indicator to ind icate when
the sys tem is not oper ating properly . T he
T PMS ma lfunction indicator is comb ined w ith
the low tire pressure te lltale. Whe n the sys­
tem detects a malfunction, the telltale will
flash for approximately one min ute and then
rema in con tinuously i llum inated . T hi s se­
quence will continue upon subsequent vehicle
start-ups as long as t he malfunct ion exists . .,.

Consumer Information
Warranty coverages
Your Audi is covered by the following war­
ranties :
- New Vehicle Limited Warranty
- Limited Warranty Against Corrosion Perfo-
ration
- Emissions Control System Warranty
- Emissions Performance Warranty
- California Emissions Con trol Warranty (USA
vehicles only)
- California Emissions Performance Warranty
(USA vehicles only)
Detailed information regarding your warran ­
ties can be found in your
Warranty & Mainte­
nance booklet .
Operating your vehicle
outside the U.S.A. or
Canada
Government regulations in the United States
and Canada require that automobiles meet
specific emission regulations and safety
standards. Therefore, veh icles built for the
U.S.A. and Canada differ from vehicles sold in
other countries .
If you p lan to take your vehicle outside the
continental limits of the United States or Can­
ada, there is the possibility that:
- unleaded fuels for vehicles with cata lytic
converter may not be available;
- fuel may have a considerably lower octane
rating . Improper fuel may cause engine
damage ;
- service may be inadequate due to lack of
proper service facilities, tools or testing
equipment ;
- replacement parts may not be readily availa­
ble.
- Navigation systems for vehicles built for the
U.S.A. and Canada will not necessari ly work
in Europe, and may not work in other coun­
tries outside North America .
Consumer Information 289
@ Note
Audi cannot be responsible for mechanical
damage that could result from inadequate
fuel, service or parts availab ility.
Audi Service Repair
Manuals and Literature
Audi Offic ial Factory Service Manuals and Lit ­
erature are published as soon as possible after
model introduction. Service manuals and lit­
erat ure are available to order from the Audi
T echnical Literature Ordering Center at:
www.audi.techliterature.com
Maintenance
' General
Your vehicle has been designed to help keep
maintenance requirements to a minimum.
However, a certain amount of regular mainte­
nance is still necessary to assure your vehicle's
safety, economy and reliability . For detailed
vehicle maintenance consult your Warranty
&
Maintenance booklet.
Under difficult operating conditions , for ex­
ample at extremely low outside temperatures ,
in very dusty regions, when towing a tra iler
very frequently, etc., some serv ice work
shou ld be pe rformed between the intervals
specified. This applies particularly to:
- oil changes, and
- cleaning or replacing the air filter .
® For the sake of the environment
By regularly maintaining your vehicle, you
help make sure that emission standards
are maintained, thus min imizi ng adverse
effects on the environment .
Important considerations for you and
your vehicle
The increasing use of electronics , sophisticat­
ed fuel injection and emission contro l sys-
tems, and the genera lly increasing technica l ..,_
•
•

29 0 Con sum er Inf ormation
comp lexity of today's automobi les, have
steadi ly reduced the scope of maintenance
and repairs which can be carried out by vehicle
owners.
Also, s afety an d e nvir onm ent al con­
cerns place very strict limits on the nature of repairs and adjustments to engine and trans ­
miss ion pa rts which an owner can perform .
Maintenance, adjustments and repa irs usua lly
require special tools, testing devices and oth­
er equipment avai lab le to specially trained
workshop personnel in order to assure proper
performance, reliab ility and safety of the vehi­
cle and its many systems .
Improper ma intenance, adjustments and re ­
pa irs can impair the operation and reliab ility
of your vehicle and even void your vehicle war­ ranty. Therefo re , proof of servici ng in accord­
ance w it h the ma intenance sched ule may be a
condition for upholding a poss ible warranty
claim made within the warran ty period.
Above all, operational safety can be adve rsely
affected, creating unnecessary risks for you
and your passengers.
If in doubt about any serv icing, have it done
by your author ized Audi dealer or any other
p roperly equipped and qualified workshop .
We strong ly urge you to give your authorized
Audi dealer the opportunity to perform all
schedu led maintenance and necessary repairs .
Your dea ler has the facilities, or iginal parts
and tra ined spec ialists to keep your vehicle
running properly .
Performing lim it e d m aint en anc e y ourself
The fo llowing pages describe a limited num­
ber of procedures which can be performed on
you r vehicle with ordinary too ls, shou ld the
need arise and trained personnel be unavaila­
ble. Before performing any of these proce­
dures, always thoroughly read all of the app li­
cable text and ca refully follow the instruc­
tions given. Always rigorously obse rve the
WARNINGS p rovided .
Before you ch eck anything in th e engin e
compartme nt, alway s read an d heed all WARNINGS
¢ & a
nd ¢ & in Working in the
engine comportment on page 230 .
A WARNING
--Serious personal in jury may occur as a re-
sult of improperly performed mainte­ nance, adjustments or repa irs.
- Always be extremely careful when work­
ing on the vehicle. Always follow com­
monly accepted safety pract ices and gen­
eral common sense. Never r isk personal
in jur y.
- Do not attempt any of the maintenance,
checks or repairs descr ibed on the fol­
lowing pages if you are not fu lly fam iliar
with these or other procedures with re­ spect to the vehi cle, or are uncerta in how
to proceed .
- Do not do any work withou t the proper
too ls and equipment . Have the necessary
work done by your authorized A udi deal ­
er or anothe r properly equipped and
qualified workshop.
- The engine compar tment o f any motor
vehicle is a potentially hazardous area. Never reach into the area around or
touch the rad iator fan. It is temperature
control led and can sw itch on suddenly -
even when the engine is off . The radiator
fan switches on automatically when the
coo lant reaches a certain temperature
and will cont inue to run until the coo lant
tempera ture drops.
- Always sw itch off the ignition before any­
one gets under the vehicle.
- Always support your veh icle with safety
s tands if it is necessary to work under­
neath the vehicle. The j ack s upp lied with
the vehicle is not adequate for this pur­
pose and cou ld co llapse causing serio us
pe rsonal injury .
- If you must work underneath the vehicle
with the wheels on the ground, a lways
make sure the vehicle is on leve l ground,
that the wheels are a lways secure ly
blocked and that the engine cannot be
started .

292 Consumer Information
Technical Modifications
Our guidelines must be complied with when technical modifications are made .
Always consult an authorized Audi dealer be­
fore starting work on any modifications.
This will help ensure that vehicle function,
performance and safety are not impaired
¢ &. .
Attempting to work on electronic components
and the software used with them can cause
malfunctions. Because of the way electronic
components are interconnected with each
other, such malfunctions can also have an ad­
verse affect on other systems that are not di­
rectly involved. This means that you risk both
a substantial reduction in the operational
safety of your vehicle and an increased wear of
ve hicle parts ¢
A:,..
Author ized Audi dealers will perform th is
wo rk in a professiona l and competent manner
or, in special cases, refer you to a professional
company that specializes in such modifica­
tions .
A WARNING
Improper repairs and modifications can
change the way vehicle systems work and
cause damage to the veh icle and serious
personal injury.
-
If emergency repairs must be performed
elsewhere, have the vehicle examined by
an authorized Audi dealer as soon as possi­
ble.
Declaration of
Compliance, Telecom­
munication and
Electronic Systems
Radio Frequency Devices and Radiocommuni­
cation Equipment User Manual Notice.
The manufacturer is not responsib le for any
radio or TV interference caused by unauthor­
ized modifications to this equipment.
Devices
T he following devices each comply with FCC
Part 15.19, FCC 15.21 and RSS-Gen Issue 1:
- Adapt ive cru ise control*
- Aud i side assist*
- Cell phone package*
- Convenience key*
- Electron ic immobilizer
- Homelink ® universal remote contro l*
- Remo te control key
FCC Part 15.19
This device complies with part 15 of the FCC
Ru les. Operation is subject to the follow ing
two conditions:
(1) This device may not cause harmful inter­
ference, and
(2) this device must accept any interference
received, including interference that may
cause undesired operation .
FCC Part 15.21
CAUTION:
Changes or modificat ions not expressly ap­
proved by the party responsible for compli­
ance could void the user's authority to operate
the equipment .
RSS-Gen Issue 1
Operation is subject to the following two con­
ditions:
(1) this device may not cause interference ,
and