2008 AUDI TT ROADSTER air condition

Checkin g and fillin g -
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At the time of printing, engine oils available in the U.S . and Canada
t hat meet the exacting specifications of Audi oil standard VW 502 00
are synthetic engine oils . This does not mean, however, that every
synthetic engine oil will meet Audi oil standard VW 502 00. So
always be sure that you use an approved oil.
To help prevent the formation of harmful deposits use only oil with
the follow ing spec ifica tions pr inted on the oil container:
Au di oi l stan dar d VW 502 00
Oil container labels may carry the specification singly or in combi­
nation with other designations and o il quality standards.
V isc osit y
Engine oils are graded according to their viscosity . The proper
viscosity grade oi l for your engine depends on climactic or seasona l
conditions where you drive . You can use oil with a v iscosity grade of
SAE 5W40 across all temperature ranges for normal driving condi ­
tions.
However, if eng ine oil viscosity grade SAE 5W40 is not available, you
can a lso use viscosity grade SAE 5W-30 or SAE 0W-40 as long as it
meets Audi oil qua lity standard VW 502 00 specifications .
Because engine oil that meets the Audi oil standard may not be
available everywhere when you need it, we s trong ly recommend
that you a lways carry with you an extra quart ( liter) of oil that
expressly conforms to the VW 502 00 specification, in case you have
to top off the o il while on the road.
On ly if the level of the oil is at or below the minimum mark on the
oi l dipstick -and no oil that express ly conforms to Audi oi l standa rd
VW 502 00 specifications is available -may you top off with a high
qual ity engine oi l, preferably synthetic -based, t hat meets ACEA A3,
ACEA A5 or ACEA 85, API SL or ILSAC GF -3 specifications, but even
then, only in viscosity grades SAE 5W -40, SAE 5W -30, or SAE 0W -40.
However, dur ing the entire time between oi l change intervals, never
top off w ith more than a total of 0.5 qt/liter engine oil that does not
confo rm to Audi oil specificat ion VW 502 00. For more information about engine oil that has been approved for
your vehicle, p lease con tac t ei the r your authorized Audi dea ler or
Aud i Customer Relations at 1 (800) 822-2834 or visit our web site at
www .audiusa .com or www .audicanada.ca. Here you will a lso find a
current list of oils (manufacturers, brand names etc.l that conform
to Audi oi l standard VW 502 00 .
Changing the engine oil
The engine oil and oil filter must be changed according to the
mi leage (k ilometers) and time intervals specified in your vehic le's
Maintenance
& Warranty booklet. Do not exceed these intervals -
harmfu l deposits from old engine oil can reduce engine perfor­
mance and can lead to expens ive eng ine repairs.
Changing the oil at the recommended interva ls is so very important
because the lub ricating properties of oi l decrease gradua lly during
normal vehicle use. If you are not sure when you have your oil
changed, ask you r authorized Audi Service Advisor .
Under some circumstances the engine oil should even be changed
more frequently. Change oi l mo re often if you drive mostly short
distances, operate the vehicle in dusty areas o r mostly under stop­
and -go traffic conditions, or when you use your vehicle where
temperatures stay below freezing point for long per iods.
Detergent additives in the oil will make fresh oi l look dark after the
engine has been running for a sho rt time. Th is is normal and is not
a reason to change the oil more often than recommended.
D amag e or malfun ctions due to la ck of mai nten ance
It is essential that you change your oi l at the recommended interva ls
using on ly engine oil that complies with Audi oil standard
VW 502 00. Your Limited New Vehicle War ranty does not cover
damage or malfunctions due to failure to fol low recommended
maintenance and use requirements as set forth in the Audi Owner's
Manual and Maintenance
& Warranty booklet . Your dealer wi ll have
to deny warranty coverage unless you present to the dealer proof in
the form of Service or Repair Orders that all scheduled maintenance
was performed in a timely manner. •
Vehicle care I t •

_____________________________________________ C_h_ e_ c_k _in ____ g_ a_n _d_ f_il _li _n __ g ____ fflllll
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0 Note
Never mix oil additives with your engine oil. These additives can
damage your engine and adversely affect your Audi Limited New
Vehicle Warranty .
W For the sake of th e environm ent
• Before changing your oi l, first make sure you know where you
can properly dispose of the used oil.
• Always dispose of used engine oil properly. Do not dump it on
garden soil, wooded areas, into open streams or down sewage
drains .
• Recycle used engine oi l by taking it to a used engine oil collec ­
tion fac ility in your area, or contact a service station. •
Engine cooling system
Coolant
The engine coolant performs two functions: it keeps the
engine from overheating and it protects the engine from
freez ing in the winter.
The coo ling system is sealed and generally requires little attention.
T he coo ling system has been filled at the factory with a permanent
coolant which does not need to be cha nged . The coolant consists of
a mixture of water and the manufacturer's glycol-basedcoolant
addit ive G 12 + antifreeze with an ticorrosi on addit ives (50% for USA
models; 60% for Canadian models). This mixture both assures the
necessary frost protection and protects metal components in the
engine's cooling system from corrosion and scaling . It a lso raises
the boiling point of the coo lant .
Do not reduce t he concentration of the coolant in the summer by
adding plain water.
The prop ort ion of coolant additi ve mu st be at le
as t 50 % but not more th an 60 %
to maintain antifreeze protection
and co oling effic iency . If the coo lant fros t protect ion is too low, the
coolant could freeze and damage the vehic le heating and engine
coo ling system.
For year-round driving, antifreeze is added at the factory for temper ­
atures down to:
• - 31 °F ( - 35 °C) USA
• -40 °F ( -40 °C) Canada.
You can mix the G12 + coo lant additive with other additives (f or
examp le G11 or G12l. Always check with your authorized Audi
dea ler .
& WARNING
Before you check anything in the engine compartment , alway s
read and heed all WARNIN GS
=:> & in "Working i n the engine
c ompartment " on
page 220.
0 Note
• Before winter sets in, have the coolant checked to see if the
coolant additive in your vehicle is sufficient to meet the climate
conditions . This is especia lly important if you live in a region where
the winter is extremely cold. If necessary, increase the proport ion o f
coo lant additive to 60%.
• When adding coolant additive to your coo ling system,
remember :
- We recommend using only coolant additive G12+ (check the
label) for your vehicle. This coolant additive is avai lable at autho ­
rized Audi dealers. Other types of antifreeze can significantly
reduce corrosion protection. The resulting corrosion can cause a
loss of coolant and serious engine damage.
• Do not add any type of radiator leak sea lant to your vehicle's
engine coolant. Adding radiator repair fluid may adverse ly affect the _.,
Vehicle care I t •

Checkin g and fillin g ---------------~-!':WIii
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& WARN ING (co ntinued)
- Use only br ake flu id th at m eet s SAE spec ificati on J 1703 and
c onf orms to F ed eral Motor Vehi cle St and ard 11 6. Always ch ec k
w ith your a uthori zed A ud i de aler to m ake sure you are u sin g
the corre ct brake fluid . Th e co rrect typ e of br ake fluid i s also
indic ate d on the br ake fluid res ervo ir .
- The br ake fluid mu st be ne w. Heavy u se of the br ake s c an
c au se a vapor lo ck if the brake fluid i s left in the s yste m too
long. Thi s ca n seriou sly affe ct the eff iciency of the brake s as
w ell as your safety . This could resu lt in an a ccident .
0 Note
Brake fluid wi ll damage the paint of your vehicle.
Because of the prob lem of proper disposal of brake fluid as well as
t he special too ls required and the necessary expertise, we recom­
mend that you have the brake f luid changed by your authorized Audi
dea ler .•
Battery
General information
Your vehicle is equipped with a specia l battery, an AGM battery. This
battery is located in the luggage compartment and must be
replaced with an origina l equipment battery. Under normal oper ­
ating conditions, the battery is
maintenan ce-free .
Have the battery checked when you take your vehicle in for service.
You a re we ll advised to replace a battery that is olde r th an 5 years .
Disc onn ectin g th e batt ery t erm inal s
Some vehic le functions (power window regulators, for e xample) are
lost if the battery terminals are disconnected. These functions have
to be relearned after the batte ry term inals are connected again. To
prevent this, the battery should only be disconnected from the
vehicle electrical system when abso lutely necessary for repairs.
V ehi cle s not dri ven for long period s
If you are going to le t your vehicle stand for a long t ime a nd not
drive it, you should remember there are electrica l components
which are still functioning and they will draw energy from the
battery and drain it, for examp le, the engine immob ilizer. To prevent
this, you can either charge the battery occasionally to keep it in
good working condition or you can d isconnect the negative cab le
on the battery.
W inter op era ti on
During the winter months, battery capacity tends to decrease as
temperatures drop. This is because more power is a lso consumed
while starting, and the headlights, rear window defogger, etc., are
used more often .
Avoid unnecessary power consumption, particularly in city traffic or
when trave ling on ly shor t distances . Let your au thorized Audi dea ler
check the capacity of the vehicle battery before winter sets in
=>
page 235 . A well charged battery will not on ly prevent start ing
p rob lems when the weather is cold , but wi ll a lso last longer .
Replacing battery
The new battery must h ave the same capacity, voltage (12 volts},
amperage, construction and p lug sea ling, as the origina l battery.
Specifications are l isted on the battery hous ing. Batteries specially
developed by Audi fulfill the ma intenance, output, and safety
requirements.
When installing the battery, make sure the ignition and all electrical consumers are switched off=>
0. .,_
Vehicle care I t •

__________________________________________________ T_ ir_e_ s_ a_ n_d _ w_ h_ e_ e_l_s __ __
•
ating the vehicle at ma ximum load , you must increase the t ire pre s­
sures to those specified for maximum vehi cle load
~ & .
Bear in mind that the t ire pressure mo nitoring system can only
monitor the tire pressures you have stored . The system does not
reco gnize the load cond itio n of your vehicle.
T he effectiveness of the tire pressure monitoring system will be
impaire d if you stor e nor mal loa d pressures but then operate the
vehic le at its maximum load~&. See the
illustration~ page 242, fig. 160 for the location of the label
on driver's si de B -pillar (co lor of the ac tual label a nd exact loca tion
on the veh ic le will vary slightly).
N ote that the following tab le is accu rate at the time of going to
press and is subject to cha nge . In t he event o f discrepancies, the t ire
pressure label (on driver's side B -pillar) a lways takes precedence .
The table belo w lists t he r ecom mend ed cold tire i nflatio n pressures
for the Audi mode l covered by your Owner's Literature at the
vehic le' s capacity weigh t and the tire size s insta lled o n the respec ­
tive models as original equipment , or as a factory option .
Engine Tire designation
Tire pressure front II Tire pressure rear
(displace -
= " full load full load
ment in normal load
condition normal
load
condition
liter ) condition
(up to condition (up
( 2 oc cupants (2 occupants
2 o ccupants ) to 2 occupants)
plus luggage) plus luggage)
I
PSI II kPA PSI II kPA II PSI II kPA
PSI I[ kPA I
I
4-cylinder
225/50 R17 94H All Season 32 220 3 2 220 29 200 29 200
2.0
245/40 R18 93H All Season 32 220 32 220 29 200 29 200
245 /40 R18 93Y XL High Performance 32 220 32 220 29 200 29 200
255 /35 R19 95Y XL High Performance 32 220 32 220 29 200 29 200
6 -cylinder 245/45 R17 95H All Season 3 2 220 32 2 20 29 200 29 2 00
3.2
245/40 R18 93H All Season 32 220 32 220 29 200 29 200
245 /40 R18 93V XL High Performance 32 220 3 2 220 29 200 29 200
255/35 R19 95V XL High Performance 32 2 20 32 220 29 200 29 200
XL = reinforced
T he correct tire pressure for the spare wheel is located on a label on the tire p ressure label on your vehicle with the tires on your vehic le.
t he d river's s ide B -pilla r. Make sure that the tire s ize inf ormat ion on t he veh icle labe l is t he
Because technical changes may be made to vehicle equipment same as the si
ze of the tires on the vehicle. This is especially impor -
t ant if the ve hicle belongs to so meo ne else or you bought the
dur ing th e mode l year, always co mpare the tire size designa tion on
Vehicle care
I t •
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.,,.___T_ ir_e_ s _ a_ n_d_ w_ h_ e_e _ l_s _________________________________________________ _
0
©
G)
U.S. DOT tire identification number
Sever snow conditions
Tire ply composition and materials used
Maximum load rating
Treadwear, traction and temperature grades
@ Maximum permissible inflation pressure
The tires and rims are essential parts of the vehicle's design. The
tires and rims approved by Audi are specially matched to the char­ acteristics of the vehicle and can make a major contribution to good
road holding and safe handling when in good condition and prop ­
erly inflated =>& .
We recommend that al l work on tires and wheels be performed by
an authorized Audi dealer . They are familiar with recommended
procedures and have the necessary special tools and spare parts as
we ll as the proper facilities for disposing of the old tires .
Authorized Audi dealers have the necessary information about tech ­
nical requirements for insta lling or changing tires and rims .
Rep lac ing t ires a nd w heels
Tires should be replaced 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 moni ­
toring system =>
page 251.
Always buy replacement radial tires t hat have the same specifica ­
tions as the tires approved for your vehicle by Audi . Replacement
tires must always have the same load rating specification as the
original equipment or approved optional tires listed in the table
=>
page 242.
Audi -approved specification tires are specially matched to your
vehic le and its load limits, and can contribute to the important road- holding, driving characteristics, and safety of the vehicle
. The tab le
( =>
page 242) lists specifications of the tires approved for the Audi
models covered by your Owner's Literature.
The tire pressure labe l located on driver's side 8 -pillar (=>
page 242,
fig. 161) lists the spec ifications of the original equipment tires
installed on your vehicle at the time it was manufactured.
Federal law requires tire manufacturers to place standardized in for­
mation on the sidewall of all tires=>
page 249, fig. 164 . T his informa­
tion identifies and describes the fundamenta l characteristics, the
quality grade of the tire and also provides a tire identification
number for safety standard certification and in case of a recall.
T ire s pec ifica tio ns
Know ledge of tire specifications makes it easier to choose the
correct tires . Radial tires have the tire specifications marked on the
sidewal l, for example:
P 2 45 / 45 R 17 95 H
This contains the following information :
P Indicates the tire is for passenger cars
24 5 Nominal tire width in mm of the tire from sidewall edge to side-
wa ll edge . In general, the larger the number, the wider the tire
45 Height/width ratio in percent (aspect ratio)
R Tire construction: Radial
17 Rim diameter code (in inches)
95 Load rating code
H Speed rating letter code
X L (or "xi", "EXTRA LOAD", or "RF") indicates that the tire is a"Rein ­
forced" or an "Extra Load" ti re
M+ S (or "M/S") Indicates that the tire has some mud and snow capa ­
bility
The tires could also have the information of direction of rotation =>
page 238.

Tires a nd wh eels -
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•
Tire manu fact uring da te
The manufacturing date is a lso indicated on the tire sidewall
(possibly only on the
inner side of the wheell:
"DOT ... 2207 ... " means, for example, that the tire was produced in
the 22th week of 2007.
S peed ratin g (let te r cod e)
The speed rating letter code on the wheels indicates the maximum
permissible road speeds=>
& in "Winter tires" on page 254.
P up to 93 mph (150 km/h)
Q up to 99 mph (158 km/h)
R upto 106mph(170km/h)
S upto110mph(180km/h)
T upto118mph(190km/h)
U up to 124 mph (200 km/h)
H upto 130mph(210km/h)
V up to 149 mph (240 km/h)2>
Z over 149 mph (240 km/h)2>
W up to 168 mph (270 km/h)2>
Y up to 186 mph (298 km/h)21
Your vehicle is normally factory equipped with tires, which possess
excel lent driving characteris tics and give your Audi optimum
driving comfort. An e lectronic speed limiter=> page 26wil l normally
prevent your vehicle from going faster than the tire speed rating
=> & .
U.S . D OT T ire Ident ifi cation Nu mber (TIN ) and tire
m anu fac ture date
This is the tire's "seria l 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 manufac-
21 For tires with a maximum speed capability over 149 mph (240 km/h), tire
manufacturers sometimes use the letters "ZR."
ture. For example, the numbers 2207 mean that the tire was
produced in the 22th week of 2007. The other numbers are
marketing codes that may or may not be used by the tire manufac­
turer. This information is used to contact consumers if a tire defect
requires a recall.
Tir e ply c omp osition and m aterial s used
The number of plies indicates the number of layers of rubber-coated
fabric in the tire . In general, the greater the number of p lies, the
more weight a tire can support. Tire manufacturers also must indi ­
cate the materials in the tire, which include steel, nylon, polyester,
and others .
Maximum L oad Rating
This number indicates the maximum load in kilograms and pounds
that can be carried by the tire.
Tir e qu alit y g ra din g for tr eadwear, trac tion, a nd
te mper atu re resi stan ce
Tread wear, traction and temperature grades=> page 253.
Max imum P ermi ssibl e Inf latio n Pre ssure
This number is the greatest amount of air pressure that should ever
be put in the tire under normal driv ing conditions .
Repla cing tires or rims on vehicl es equipp ed with tir e
pres sure monit orin g s yst em
The wheels on your vehicle are equipped with a sensor which
constant ly monitors the air pressure ins ide the t ire, and then trans ­
mits this information to the tire pressure monitoring system. If you
are going to replace the wheel rims on your vehic le, make sure the
new rims also have these sensors . The sensors must be compatible
with the tire pressu re monitoring system on your vehicle.
I f the sensors are to be installed on different rims, the sea l, washer,
and valve cap for each sensor must be replaced.
If you instal l rims, which do not have the sensors, or have sensors
which are not compatible, then the tire pressure monitoring system ..,_
Vehicle care I t •

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
Safety Standard No. 109. Grades Band A represent higher leve ls of
performa nce on th e la boratory test w hee l tha n the minim um
requ ired by law .
& WARNING
The traction grade assigned to this t ire is based on straight-ahead
braking traction tests , and does not include acceleration ,
cornering , hydroplaning or peak traction characteristi cs.
& WARNING
The temperature grade for this tire is established for a tire th at is
properly inflated and not overloaded. Exces sive speed , underinfla­
tion, or excessive loading, either separately or in combination , can
cause heat buildup and possible tire failure. •
Winter tires
Win ter tires can im prove veh icle ha ndl ing on sno w and
i c e. A t te mp eratu res belo w 4 5 °F (7 ° C) w e r eco mme nd
c ha ng in g to winter tir e s.
In some heavy snow areas, local governments may require true
winter o r "snow" tire s, those with ve ry deeply cut tread. These tires
should only be used in pairs and be insta lled on a ll four wheels .
M ake s ure you p urchase snow ti res that are the same s ize and
construct ion type as the other ti res on your vehicle.
If your vehic le is equipped with al l-wheel drive *, this will improve
t rac tion dur ing winter dr iv in g, eve n with the standard tires .
However, we strongly recommend that you a lways equip all four
whee ls on y our vehicle with correc tly fitted winte r tires or all-seas on
tires, when winter road conditions are expected . Th is a lso improves
t he ve hic le 's brak ing perfo rmance an d reduces s top ping distances .
Summer ti res p rovide less grip on ice and snow. Winter tires (snow tires) must always be fitted on all four whee
ls .
Compatible ti re p ressure monit oring senso rs must be instal led on
a ll four w inter tires for the tire pressure monitoring system to func ­
tion proper ly :::::> page 251.
Ask your aut hori zed Audi deale r or quali fied w orksho p for perm itte d
winter tire size s. Use only radial winter tires.
Wi nter tires lose thei r effec tiveness when the tread is worn down t o
a depth of 0. 157 inch (4 mm).
On ly drive with winter tires under winter conditions. Summer tires
h an dle better when there is no s now or ice on t he roads a nd th e
temperature is above 45 °F (7 °C) .
I f you have a flat tire, see n otes on spare w hee l :::::> page 249.
Please a lways remembe r that w inte r tires may have a lower speed
r ating than the tires original ly instal led on your vehic le at the time
i t was manu fac tured. Please see:::::> page 251, "Speed rating (letter
code)" for a listing of the speed rating letter codes and the
m ax imum speed at which t he ti res ca n be drive n.
T he speed rating letter code(:::::, page 241) is on the side wa ll of the
ti re :::::> page 2 49. & WARNING
Winter tires have maximum speed limits that may be lower than
your veh icle's ma ximum speed . Always know the maximum speed
before driving off . Never drive faster than the speed permitted for
your specific winter tires . This will cause damage to the tires
leading to an accident and serious personal injury to you and your
pa ssengers.
& WARNING
Driving faster than the ma ximum speed for whi ch the winter tires
on your vehicle were designed can cause tire failure including a
blowout and sudden deflation , los s of control , crashes and serious _.,

________________________________________________ T_ i _r_e _s_ a_n_ d_ w_ h_ e_e _ l_s __ !II
•
• After any impact, immediately inspect your tires or have them
inspected by the nearest authorized Audi dealer. Replace a
damaged tire as soon as possible .
• Inspect your tires every 2,000 miles (3,000 km) for damage and
wear . Damage is not always easy to see. Damage can lead to loss of
air and underinflation, which could eventua lly cause tire fai lure . If
you believe that a tire may have been damaged, replace the tire as
soon as possible .
• These tires may wear more quickly than others.
• Please a lso remember that, whi le these tires deliver responsive
handling, they may ride less comfortably and make more noise than
other choices.
R edu ced p erform an ce in w in te r/ c o ld sea son
co nditi ons
All tires are designed for certain purposes. The low aspect ratio,
ultra high performance tires originally installed on your vehicle are
intended for maximum dry and wet road performance and hand ling.
They are not suitable for cold, snowy or icy weather conditions . If
you drive under those circumstances, you should equip your vehicle
with al l- season or winter tires, which offer better traction under
those conditions . We suggest you use the recommended snow or
a ll- season tires specified for your vehicle, or their equivalent .
Refer to=>
page 254 for more detai led in formation regarding winter
tires. •
Run-flat tires
Applies to vehi cles : w ith R un-f lat tires
Introduction
Run-flat tires help keep you moving if a tire goes flat.
Reinforced s idewalls give the ti res run -flat capability if tire pressure
is lost . We recommend that run-flat tires only be mounted on vehicles that
we
re origina lly equipped with these special tires at the fac tory and
have a Tire Pressure Monitoring System .
Run-flat t ires can be ident ified by the letter s "RSC" on the tire side ­
wall.
If you do change the tires on your vehic le from normal to run -flat
tires, you must buy the special rims required for run-flat tires, and
the Tire Pressure Monitoring System must be reprogrammed by an
authorized Audi dea ler or other qualified workshop.
Wh at do run-fl at tir es do?
These special t ires have run-flat capabi lities that he lp keep you
moving if a tire loses pressure and goes flat. Under favorable condi ­
t ions tires can be driven
at least 30 miles (50 km ), but you must not
drive
f as ter t han 50 mph (80 km/h i=> page 258 , "Driving with run ­
flat t ires".
The Tire Pressure Moni toring System constantly checks the air pres­
sure in the tires. If the run -flat system is active (shown in the center
display), you must inspect the affected tire or tires and then decide
whether to continue driving . Be sure to follow these tips
=>
page 258, "Driving with run-flat tires" .
When it is not po ssibl e to continue driving , even with
run -fl at tire s?
• If the Electronic Stabilization Program (ES P) is not working or
keeps coming on.
• If the Tire Pressure Monitoring System does not work.
• If the tire has been severely damaged, in a crash , for example .
The tread can separate from a damaged tire as the wheel turns, and
hit parts of the vehicle , such as the fue l tank filler neck, fuel lines or
brake lines.
• Do not continue driving if severe vibration occurs or if the tire
starts to smoke because the tire is running hot.
• Do not continue driving if damage to the tire, such as cracks in
the s idewall, appears .
~
Vehicle care I t •