2008 AUDI TT ROADSTER air condition

Ignition ON , light swit ch at @ .
With the ignition switched ON, the g low of instrument needles can
be adjusted to appear brighter or dimmer.
Ignition ON , ligh t switch at :oo ; or io.
With the lights switched on , the brightness of instrument cluster
(i .e. needles, gauges and displays) and center conso le i llu m in ation
can be adjusted .
0 Note
The instrument c luster and center console illumination (gauges and
needles) comes on when you switch on the igni tion and the
vehicle
headlights are off .
Be aware of the followin g difference be tween
models built to US o r Canadian specifications :
• USA models : illumination of the in strument cluster (gauges and
needles), dash and center console around the gearshift lever is
controlled by a light sensor located in the instrument panel. The
instrument panel illum ination will automatically become dimmer
as the daylight fades away and eventually will go out completely
when outside light is very low . This is to remind you , the d river , to
s witch on the headlight s before it gets too dark.
• Canada models : instrument panel illum ination will stay br ight
regardle ss of the inten sity of ambient light . Always be aware of
c hanges in outside light conditions while you are driving . Respond
in time to fading dayli ght by turning the light switch to position
iD
(or "AUTO" if your car is equipped with this feature) to turn on your
headlights. •
Bi-Xenon headlights*
Afte r starting the engi ne, the b i- xeno n headlights are au tomatical ly
adjusted to the load and angle of the vehic le (for example, during
acce lera tion and braking). This prevents oncoming traffi c from
experiencing unnecessary headlight g lare from your bi -xenon head ­
lig hts .
Con tro ls and eq uip­
ment
Clear vision
I f the system is not operating properly, a warning symbo l in the
Au to-Check C ontr ol is displayed
=> page 35 . •
Emergency flasher tfft,,.
T he e mergency flasher m akes other motor ists aware that
y o u or yo ur vehicle are i n an e merge ncy si tuation.
Fig . 68 Center
co nsole : emergency
fla sher sw itch
Press the sw itch ~=:,fig. 68, to s witch t he emergency
flasher on or off.
When the emergency flasher is on, all four turn signal blink at the
same time . The tu rn signal indi cato r lights
¢i Q in the instrument
c luster, as well as the light in the emergency flasher switch
J:&. b link
likewise.
The eme rgency flashe r will automat ically switch on i f you are in an
accident where the airbag has deployed .
[ i ] Tips
You should switch on the emergency flasher when:
• you are the last vehicle standing in a traffic jam so that any other
vehicles coming can see you, or when
• your vehicle has broken down or you are in an emergency s itua -
tion, o r when _,,,
Vehicle care I I irechnical data

Warm and cold
Warm and cold
Climate controls
Controls
The air conditioning automatically maintains the selected
temperature in the vehicleinterior throughout each
se aso n.
Fig . 93 C limate co ntro ls
We recomme nd the following setting:
Rotate the knob=> fig. 93 @to th e right to switch on the
air conditioning.
Set t he temperature to 72 °F ( 22 °Cl.
Press th e !AUTO ]=> fig . 93 button.
Using the previously recommended setting is the quickest way to
achieve a comfortable climate in the vehicle . T his setting should
therefore on ly be changed when persona l comfort levels or certain
circumstances require it .
The climate contr ols are a combination of automatic heating and
ventilation systems and a cooling system which dehumidifies and coo ls the a ir inside the veh ic le .
The climate controls automa tically ma intain a temperature once it
has been set . T he temperature of the air from the vents, fan speed
(air volume) and air dis tribution are also automa tica lly adjusted . The
system also takes into account strong sunshine so that manual
adjustment is no t necessary. So in al most a ll cases,
automatic mode
offers the best conditions for the comfort of the occupants at all
times of the year~
page 101.
Please note :
In cooling mode, relative humidity in the interior is reduced. This
prevents the w indows from fogging up.
When relative humidity and temperatures outside are high,
conden­
sate
can drip from the air conditioning evaporator and form a poo l
of water under the vehicle . This is normal and not an indication of a
leak!
When outside temperatures are low, the fan does not switch to a
higher speed until the coolant has reached an adequate tempera­
ture, with the exception of the defrost setting .
When accelerating at wide -open throttle, the air conditioning
compressor is temporarily switched off to maintain full engine
power .
I n order to ensure eng ine cooling under extreme engine loads, the
compressor is switched off if coolant temperatures climb too high. _,,,

Functions are set by turning the rotary knob or switched on and off
by tapping the buttons. The LED in the buttons illuminates when the
function is active .
Button(sl
Rotary knob 0
Rotary knob 0 @
Rotary knob©
(- .,; +]
-
Po llutant f ilter Me
aning
Temperature selection
Switch ai r conditioning
on/o ff
Fan
Air distribution
Rear window defogger
Heated seat* driver/pas ­
senger side
Recirculation
Switch on cooling sys ­
tem
P age
~ page 100
~ page 100
~ page 701
~ page 101
~ page 103
~ page 104
~ page 102
~ page 102
The pollutant filter (particle filter) ensures that contaminants in the
outside air (such as dust or po llen) are grea tly reduced or stopped.
T he air is also filtered in recirculation mode.
The pollutant fil ter e lement must be changed according to the inter ­
vals specified in the maintenance schedu le so that the air condi­
tioning system's performance is not adversely affected.
If the fil ter's effectiveness is weakened by driving the vehicle in
areas with heavi ly polluted outside air, the filter element should also
be changed in between the listed services .
Controls and equip ­
ment
W arm and cold
& WARNING
Fo r safet y rea sons , it is imp ort ant that all window s are free of ice,
snow , and condensati on . Only then i s good vi sibility en sured.
Pl eas e familiari ze yourself with the co rrect o peration of th e air
c ond itioning and how to dehum id ify /defro st the windows.
0 Note
• I f you suspect that the climate contro ls have been damaged ,
switch the system off to avoid damaging it , and have it inspected by
an authorized Audi dealer.
• Audi climate control system repairs require specia l expertise and
the proper tools. You shou ld contact an authorized Audi dealer in
the event of malfunct ions.
[ i ] Tip s
• To avoid adversely affecting heating and cooling performance
and to prevent condensation on the windows, the air intake in front
of the windsh ield must be free of ice, snow, and leaves.
• The air coming from the vents and circu lating through the en tire
interior is extracted through the out let slots in the side panels in the
luggage compartment. Make sure that the outlet slots are not
covered by clo th ing, etc.
• Climate control works most effectively if the windows are closed .
However , if the interior o f a parked vehicle is extremely hot from the
sun's rays, briefly opening the windows can speed up the cooling
process. •
I • •

• ..__w_ a_ r_m _ a_ n_d_ c_ o_ ld __________________________________________________ _
Manual air recirculation mode[~]
The recirculation mode prevents polluted outside air from
entering the vehicle interior.
Switching on air recir culation
- Press the button [19.] ~ page 98, fig . 93 ~ & .
Swit ching off air recir culation
Press the butt on [19.] ag ain, o r
Press the
[AUTO I button, or
- Press the[@] button.
In recircu lation mode, air is drawn from the vehic le interior, filtered,
and recircu lated. We recommend that you se lect recircu lat ion mode
briefly ~ & under the fo llowing conditions:
When driving through a tunnel or i n a traffic jam so that exhaust
fumes and odors cannot enter the vehic le interior .
& WARNING
You should not u se the re circulat ion mode for an e xtended period
s ince no fre sh air i s drawn in , and with the air conditioning
s wit ched off the windows can fog up -this in crea se s the ris k of an
accident !•
A /C operation [AC)
Switching on A /C
- Press th e [AC] button~ page 98, fig. 93 .
Switching A /C off
- Press the [AC] button again.
The cooling system is switched on during A/C operation - the
heating and ven tilation system is controlled automatica lly.
I i ] Tips
If the LED in the switch stays on after A/C operation has been
switched off( = switching the A/C offl, there is a fau lt in an air condi ­
t ioning component. Please consult an authorized Audi dealer when
there is an operating prob lem .•
Air vents
Air d istribution determines the air flow fro m the indi ­
vi dual vents.
Fig . 97 Instrumen t pan el: Loc ation o f air vent s
Vents @and 0
- To open and close the outlets, t urn the adjusting ring.

________________________________________________ D_r_iv _ i _n_ g~ S_ a_ fe_ ly __ lllll
- Make sure that all lights and signals are operating
correctly.
- Make sure that the tire pressure is correct.
- Make sure that all windows are clean and afford good
visibility to the outside.
- Secure all luggage and other items carefully =>
page 95.
-Make sure that nothing can interfere with the pedals.
- Adjust front seat, head restraint and mirrors correctly for
your height.
- Instruct passengers to adjust the head restraints
according to their height.
- Make sure to use the right child restraint correctly to
protect children =>
page 168, "Child Safety".
- Sit properly in your seat and make sure that your passen­
gers do the same=>
page 87, "General recommenda­
tions".
- Fasten your safety belt and wear it properly. Also instruct
your passengers to fasten their safety belts properly
=>
page 137. •
What impairs driving safety?
Safe driving is directly related to the condition of the
vehicle, the driver as well as the driver's ability to concen­
trate on the road without being distracted.
The driver is responsible for the safety of the vehicle and all
of its occupants. If your ability to drive is impaired, safety risks for everybody in the vehicle increase and you also
Controls and equip­ ment Safety first Vehicle operation
become a
hazard to everyone else on the road =>&, .There ­
fore:
- Do not let yourself be distracted by passengers or by
using a cellular telephone.
- NEVER drive when your driving ability is impaired (by
medications, alcohol, drugs, etc .).
- Observe all traffic laws, rules of the road and speed limits
and plain common sense.
- ALWAYS adjust your speed to road, traffic and weather
conditions.
- Take frequent breaks on long trips. Do not drive for more
than two hours at a stretch.
- Do NOT drive when you are tired, under pressure or when
you are stressed.
in. WARNING
Impaired driving safety increases the risk of serious personal
injury and death whenever a vehicle is being used. •
Vehicle care Do-it-yourself service Technical data

___ A_ ir_ b_ a-g _ s_y _s_ t_ e_ m _________________________________________________ _
Airbag system
Important things to know
Importance of wearing safety belts and
sitting properly
Airbags are only supplemental restraints. For airbags to
do their job, occupants must always properly wear their
safety belts and be in a proper seating position.
For your safe ty a nd the safety of your passengers, before
driving o ff, a lways:
- Adjust the driver's seat and steering wheel properly
~ page 130,
-Adjust the front passenger's seat properly~ page 88,
- Wear safety belts properly~ page 140,
-Always properly use the proper child restraint to pro tect
children~
page 168 .
In a collision airbags must inflate within the blink of an eye and with
considerable force. The supplemental airbags can cause injuries if
the driver or the front seat passenger are not seated proper ly . There ­
fore in order to help the airbag to do its job, it is important, both as
a driver and as a passenger to sit properly at a ll times.
By keep ing room between your body and the steering wheel and the
front of the passenger compartment, the airbag can inflate fu lly and
comp letely and prov ide supplementa l protection in certain frontal
collisions =>
page 130, "Proper occupant seating positions". For
detai ls on the operation of the seat adjustment controls =>
page 88
and=> page 89.
It's especially important that chi ldren are proper ly restrained
=>
page 168.
There is a lot that the dr iver and the passenger can and must do to
help the individual safety features installed in your Audi work
together as a system.
P roper seating position is important so that the front airbag on the
driver side can do its job. I f you have a physical impairment or
condition that prevents you from sitting properly on the driver seat
with the safety belt properly fastened and reaching the pedals, o r if
you have concerns with regard to the function or operation of the
Advanced Airbag System, p lease contact your authorized Audi
dea ler or qua lif ied workshop, or call Audi Customer CARE at 1-800-
822 -2834 for possib le modifications to your vehicle.
When the airbag system deploys, a gas generator wi ll fill the
airbags, break open the padded covers, and inflate between the
steering wheel and the driver and be tween the instrument panel
and the front passenger. The airbags wil l deflate immediate ly after
deployment so that the front occupants can see through the wind ­
shield again without interruption.
A ll of this takes p lace in the b link of an eye, so fast that many people
don't even rea lize that the airbags have dep loyed . The airbags also
inflate with a great deal of force and nothing should be in their way
when they dep loy. Fron t airbags in combination wi th properly worn
safety belts slow down and limit the occupant's forward movement.
T ogether they he lp to prevent the driver and passenger from hitting
parts of the inside the vehic le while reducing the forces acting on
the occupant during the crash. In this way they he lp to reduce the
r isk of injury to the head and upper body in the crash. Airbags do not
protect the arms or the lower parts of the body .
Both front airbags w ill not inflate in al l fro ntal col lisions . The trig­
gering of the airbag system depends on the vehic le deceleration
r ate caused by the colli sion and registe red by the electronic contro l
unit. If this rate is below the reference value programmed into the
cont rol unit, the airbags w ill not be t riggered, even though the car
may be bad ly damaged as a result of the collision. Vehicle damage, .,,,.

___ A_ ir_b _a_ g;:::;_ s--:.. y_s _t _e _m _________________________________________________ _
Front airbags
Description of front airbags
The airbag system can pro vid e supp lemen tal prot ection
to p roperly r es tra ined front seat occu pa nts.
Fig . 130 Location of
driver airb ag: in
s te ering wheel
Fig . 13 1 Locat ion of
front p assenger 's
airbag: in the instru ­
ment panel
You r ve hicle is equipped w ith a dual -stage front "Adva nced Airbag
System" in comp liance with United States Federal Motor Vehicle
Sa fet y S tanda rd (F MVSS) 208 as app licable at the time your ve hicl e
was manufactu red. Your veh icle is also equipped with s ide airbags
fo r th e d river an d front seat passenge r. The safe ty bel ts for the fr ont
seats have "pretens ione rs" that help to take slac k out of the belt
sy stem. Th e pre tensio ners a re a ls o ac tiv ate d b y the elec tron ic
control un it for t he airbag system . T
he front saf ety be lts also have load limiters to help reduce the
f o rc es a pp lie d t o th e b ody in a cra sh .
T he airbag for the driver is in the steerin g wh eel hub~ fig. 13 0 and
t h e ai rbag fo r the front pas senge r is in the i nstrument panel
~ fig. 1 31. The gene ral loca tion of the airba gs is m arke d "AIR BA G".
T here is a lot you need to know about the airbags in your vehicle . We
u rge you t o rea d th e deta iled inf orma tion about a ir ba gs, s afe ty belts
and child safety in this and the other chapters that make up the
owne r's lite ra tu re. P lea se be s ure to hee d the WAR NINGS· th ey are
e xtremely important for your safety and the safety of your passen ­
ge rs, especia lly i nfa nts a nd sma ll children.
& WARNING
Never rely on airbags alone for protection.
• Even when they deploy, airbags provide only supplemental
protection .
• Airbag work most effectively when used with properly worn
safety belts.
• Therefore , always wear your safety belts and make sure that
everybody in your vehicle is properly restrained .
& WARNING
A person on the front passenger seat, especially infants and small
children , will receive serious injuries and can even be killed by
being too close to the airbag when it inflates.
• Although the Advanced Airbag System in your vehicle is
designed to turn off the front passenger airbag if an infant or a
small child is on the front passenger seat , nobody can absolutely
guarantee that deployment under these special conditions is
impossible in all conceivable situations that may happen during
the useful life of your vehicle .
• The Advanced Airbag System will deploy in accordance with
the "low risk " option unde r the U.S . Federal Standard if a child that .._

Airbag syst em -----------------=~-
& WARN ING (co ntinued)
is he avier tha n the t ypi ca l o ne -yea r old child i s on the front
p asse nger seat and the othe r con dition s for airba g deploym ent
a re met .
• Accident stat istic s have shown that children are gen era lly safer
i n th e rea r seat ar ea th an in the front se ating posit ion .
• For its ow n sa fet y, a c hild should always ride pr operly
re str ai ned f or it s a ge a nd si ze . •
Advanced front airbag system
Your vehicle is equipped with a front Advanced Airbag System in
compliance with United States Federal Motor Vehicle Safety Stan­
dard 208 as applicab le at the time your vehicle was manufactured.
Th e front Advanced Airbag System supplements the safety belts to
provide additional protection for the driver's and front passenger 's
heads and upper bodies in frontal crashes. The airbags inflate only
in frontal impacts when the vehicle deceleration is high enough .
The front Advanced Airbag System for the front seat occupants is not a substitute for your safety be lts. Rather, it is part of the overa ll
occupant restraint system in your vehicle. A lways remember that
the airbag syste m can only help to protect you, if you a re sitting
upright, wearing your safety be lt and wearing it proper ly. This is why
you and your passengers must a lways be proper ly restrained, not
just because the law requires you to be .
The Advanced Airbag System in your vehicle has been certified to meet the " low risk" requirements for 3 and 6 year-old children on the
passenger side and very small adults on the driver side . The low risk
deployment cr iteria are intended to help reduce the risk of injury
through interaction with the front airbag that can occur, for
examp le, by being too c lose to the steering wheel and instrument
panel when the airbag inflates .
Controls and equip­
ment Safety first Vehicle operation
I
n addition, the system has been certified to comply with the
"suppression" requirements of the Safe ty Standard, to turn off the
front airbag for infants 12 months old and younger who are restrained on the front passenger seat in child restraints that are
listed in the Standard=>
page 170, "Child restraints and Advanced
Airbags" .
"Suppression" requires the front airbag on the passenger side to be
turned off if:
• a child up to about one year of age is restrained on the front
passenger seat in one of the rear-facing or forward-facing infant
res traints listed in Federal Motor Vehicle Safety Standard 208 with
wh ich the Advanced Airbag System in your vehicle was certified. For
a listing of the child rest raints that were used to certify your
vehic le's compliance with the US Safety Standard=>
page 170,
• weight less than a threshold leve l stored in the cont rol unit is
detected on the front passenger seat.
When a person is detected on the front passenger seat, weighing more than the total weight of a child that is about 1 year old
restrained in one of the rear-facing or forward -facing infant
restraints (lis ted in Federal Motor Vehicle Safety Standard 208 with
which the Advanced Airbag System in your vehicle was certified),
the front airbag on the passenger side may or may not deploy .
The
PA SS EN GER AIR BA G OFF light comes on when the e lectronic
control unit detects a total weight on the front passenger seat that
requires the front airbag to be turned off. If the
PAS SEN GER AIR BAG
OFF
light does not come on, the front airbag on the passenger side
has no t been turned off by the con trol un it and can deploy if the
control unit senses an impact that meets the conditions stored in its
memory .
If the total weight on the front passenger seat is more than that of
a typical 1 year -o ld, but less than the weight of a small adult, the
front a irbag on the passenger side may dep loy (the
PA SS ENGER AIR
BAG OFF
light does not come onl.
For e xample , the airb ag may deplo y if:
Vehicle care Do-it-yourself service Technical data