2008 AUDI TT ROADSTER ESP

___ C_h_ i_ ld _ S_ a_ f_ e_ t_y ____________________________________________ _
Children up to about 40 lbs (18 kg) are best protected in child safety
seats designed for their age and weigh t. Experts say that t he skel ­
eta l structure, part icularly the pelv is, of these ch ildren is not fully
developed, and they s hou ld not use the vehicle sa fe ty be lts
::::>fig .140 .
Children who weigh more than 40 lbs . (1 8 kg) may generally use the
available three point combinat ion lap and shou lder belts when t hey
sit on an appropriate booster seat. Be sure the booster seat meets
all applicable safety sta ndards .
Booster seats raise the seating position of the ch ild and reposition
both the lap and s hou lder par ts of t he safety belt so tha t they pass
across the c hild's body in the right places. The routing o f the belt
over the child's body is very important for the child 's p rotection.
This app lies whenever a ch ild uses the vehicle's safety bel ts, even
when the child is big enough to use them without a booster seat.
In a crash, air bags must inflate with in a blink o f an eye and with
considerable force . In order to do its job, the airbag needs room to
inf late so tha t it wi ll b e there to pr otec t th e occ up ant as the occu ­
pant moves forward into the airbag .
A vehic le occupant including a child who is out of position and too
close to the airbag ge ts in the way of an inflati ng airbag. When an
occupant is too close , he or she will be struck vio lent ly and will
receive serious or p ossi bly eve n fatal injury.
In order for the airbag to offer protect ion , it is important that all
veh ic le occupan ts, especia lly any c hild ren, who mu st be in the fron t
seat in exceptional circumstances , be properly restrained and as far
away from the airbag as possible. By keeping room between the
child's or othe r occupant's body and the front of the passenger
compartment, the airbag can inflate fully and comp letely and
provid e supp lemental pro tec tion in cer tain fro ntal crashes.
& WARNING
Not using a booster seat , using the booster seat improperly , incor ­
rectly installing a booster seat or using the vehicle s afety belt
& WARNING (continued )
improperly in creases the r isk of serious personal injur y and death
in a collision or other emergency situation . To help reduce the risk
of ser ious p ersonal injury and /or death :
• Alway s make sure to position the shoulder portion of the three­
point belt over the middle of child's shoulder .
• Never let the shoulder portion of the belt rest against or acro ss
the neck , face , chin , or throat of the child .
• Always make sure the lap belt portion of the three -point belt is
worn snug and passes as low as possible across the child's pelvis .
Never let the belt pass o ver the soft abdomen.
• Failure to properly route safety belts over a child's body will
cause severe injuries in an accident or other emergency situation
=> page 137 .
• Children on the front seat of any car , even with Advanced
Airbags, can be seriously injured or even killed when an airbag
inflates. A child in a rearward -facing child safety seat installed on
the front pa ssenger seat will be seriously injured and can be killed
if the front airb ag inflates .
• Never let a child stand or kneel on any seat , for example the
front seat .
• Never let a child ride in the cargo area of your vehicle .
• Alway s remembe r that a child leaning forward , sitting side­
ways or out of po sition in any way during an accident can be
s truc k by a deploy ing airb ag. This will result in serious personal
injury or death .
• If you must install a rearward facing child safety seat on the
front passenger seat because of exceptional circumstances the PASSENGER AIR BAG OFF light must come on and stay on , when ­
ever the ignition is swit ched on .
• If the PASSENGER AIR BAG OFF light does not come on and st ay
on , perform the check s described =>
page 157, "Monitoring the
Advanced Airbag System ". .,_

_______________________________________________ C_h _ i_ld _ S_ a_ f_ e_ t..,:c y __ __
& WARNING
Rearward-facing child restraints:
• A child in a rearward-facing child safety seat installed on the
front passenger seat will be seriously injured and can be killed if
the front airbag inflates -even with an Advanced Airbag System.
• The inflating airbag will hit the child safety seat or infant
carrier with great force and will smash the child safety seat and
child against the backrest, door or roof.
• Always be especially careful if you must install a rearward
facing child safety seat on the front passenger seat in exceptional
circumstances.
• Make sure that the PASSENGER AIR BAG OFF light comes on
and stays on all the time whenever the ignition is switched on.
• Never install a rearward facing child safety seat on the front
passenger seat unless the PASSENGER AIR BAG OFF light comes
on and stays on. If the PASSENGER AIR BAG OFF light does not
come on and stay on have the airbag system inspected immedi ­
ately by your Audi dealer. •
Activating the convertible locking retractor
Use the convertible locking retractor to secure a child
restraint.
Always heed the child safety seat manufacturer's instruc ­
tions when installing a child restraint in your vehicle . To
activate the convertible locking retractor:
- Place the child restraint on a seat .
- Slowly pull the belt
all the way out.
- Route it around or through the child restraint belt path
~& -
Controls and equip­
ment Safety first
Vehicle operation
-Push the child safety seat down with your full weight to
get the safety belt really tight.
- Insert the belt tongue into the buckle for that seating
position .
- Guide the safety belt back into the retractor unt il the belt
lies flat and snug on the child safety seat.
- You should hear a "clicking" noise as the belt winds back
into the inertia reel. Test the convertible locking retractor
by pul ling on the belt. You should no longer be able to
pull the belt out of the retractor. The convertible locking
retractor is now activated .
- Make sure that the red release button is facing away from
the child restraint so that it can be unbuckled quickly.
- Pull on the belt to make sure the safety belt is properly
tight and fastened so that the seat cannot move forward
or sideways more than one inch (2.5 cm).
& WARNING
Using the wrong child restraint or an improperly installed child
restraint can cause serious personal injury or death in a crash.
• Always make sure that the safety belt retractor is locked when
installing a child safety seat. An unlocked safety belt retractor
cannot hold the child safety seat in place during normal driving or
in a crash.
• Always buckle the child safety seat firmly in place even if a
child is not sitting in it. A loose child safety seat can fly around
during a sudden stop or in a crash.
• Always make sure the seat backrest to which the child restraint
is installed is in an upright position. Otherwise, the seat back with
the child safety seat attached to it could fly forward in the event of
an accident or other emergency situation. ..,
Vehicle care Do-it-yourself service Technical data

_1--_l_ n _t _ e _ll _,ig ,_,_ e_n _t _ t_ e_ c_ h_n _o_ l_ o ~g""- y.e- __________________________________________ _
Intelligent technology
Notice about data recorded by
vehicle control modules
Your vehicle is not equipped with an Event Data Recorder (EDR),
installed by some manufacturers for the express purpose of
capturing data for retrieval after an accident or crash event . EDR's
are sometimes called "crash recorders".
Some state laws restrict the retrieval or downloading of data stored
by EDR's that were installed in a vehicle for the express purpose of
retrieving data after an accident or crash event w ithout the owner's
consent.
Although your vehicle is not equipped with an EDR, it is equipped
with a number of electronic control modules for various vehicle systems such as, for example, engine function, emission control, as
well as for the airbags and safety belts.
These electronic control modules also record vehic le-related data
during norma l vehicle opera tion for diagnostic and repair purposes .
The recording capacity of the electronic control modules is limited
to data (no sound is recorded) and only a small amount of data is
actually recorded over a very limited period of time and stored when
a system fault or other condition is sensed by a control unit. Some
of the data then stored may relate to vehic le speed, direction,
braking as well as restraint system use and performance in the
even t of a crash or other condition . Stored data can only be read and
downloaded with special equipment.
Electronic Stabilization Program (ESP)
Genel'61
The Electronic Stability Program increases driving
sta bility.
Fig . 142 Cente r
cons ole with ESP
sw itch
With ESP, control over the veh icle is increased in situations when
the vehicle is close to the limits of grip, such as during acce leration
and in curves. ESP reduces the risk of skidding a nd improves vehicle
stability under all road conditions . It operates at all speeds .
The Anti-Lock Brake System (ABS), E lec tronic Differentia l Lock (EDS)
and Anti-Slip Regulation System (ASR) are integrated in the Elec­
tronic Stability Program .
H ow ESP work s
The ESP control unit processes the following data from high-sensi ­
tive sensors: the rotational speed of the vehicle about its vertica l
axis, fore -and -aft and lateral acceleration forces, brake pressure and
steering angle.
Using steering ang le and vehicle speed, the direction the driver
wishes to travel is determined and continuously compared with
actual vehicle behavior . If the two do not match, for example when

the vehicle begins to skid, ESP brakes the appropriate wheel auto­matical ly .
The vehicle is stabilized again by the forces acting on the wheel during braking. With an oversteering vehicle (tendency for the rear
end to skid out of the curve), the brake application is mainly at the
front wheel on the outside of the curve, with an understeering
vehicle (tendency to run wide in the curve) at the rear wheel on the
inside of the curve or additionally at the other wheels as needed .
This brake application is accompanied by noises.
ESP works in conjunction with ABS=:>
page 189. If there is ma lfunc­
tion in the ABS, ESP is also inoperative .
Activa ting
The ESP is automatica lly activated when the engine is started, and
it performs a self-test. As soon as the test is completed, the system
is in normal operating mode . With ASR deactivated, or with ESP/ASR
deactivated, pressing the button=>
page 184, fig. 142 returns the
system to normal operation.
D eac tiva ting
ESP should norma lly be activated at all times because this ensures
optimum vehicle stability . Only in certain exceptional cases it does
make sense to deactivate Anti -Slip Regulation (ASR) or the Elec ­
tronic Stability Program !ESP) by pressing the button =:>
page 184,
fig. 142. Both deactivation stages can only be activated from normal
mode.
Dea cti vat ing ASR
Tap the switch . Deactivation is indicated by s low flashing of the ESP
lamp in the instrument c luster. In certain situations (e.g. driving
with snow chains, in deep snow or on loose ground, or when rocking the car free), it may be necessary to deactivate ASR. Deacti ­
vation is effective only up to a speed of about 45 mph (70 km/h). At higher speeds, ASR is switched on again automatical ly in front ­
whee l drive vehicles, deactivation is possible only up to about 30
mph (50 km/h). With a ll -whee l drive vehicles, ASR is active above
Controls and equip­
ment Safety first Vehicle operation
In
te llig ent tec hn olo gy
about 45 mph (70 km/h) and deactivated automatical ly below this
speed.
D eac tiva tin g ES P/ASR
Press the button for more than 3 seconds . Deactivation is indicated
by the ESP lamp in the instrument c luster staying on permanently .
This deactivates the E lectronic Stabi lity Program (ESP) in addition to
ASR . No Electronic Stability System operation and no Anti-Slip
Regu lation is availab le across the entire speed range; ASR and ESP
are activated only when the brakes are used for the duration of the
braking action and remain active until a stab le vehicle condition has
been reached. There is no driving situation which requires ESP to be
deactivated, so this should only be done if the driver's skill and the
traff ic situation permit .
& WARNING
• The limi ts of ph ysics ca nnot be suspe nd ed by E SP. E ven in vehi ­
cles w ith ESP, you should always adapt your dr iving to road and
tr affi c co ndition s. Thi s is part icul ar ly tr ue on a s lippe ry and wet
road . Do not be te mpt ed b y th e incre as ed safet y prov ided t o ta ke
ri sks - dang er of an accident !
• Plea se note that when ASR or ESP /ASR i s deactivated , the drive
w heel s can spin on icy and slipper y ro ad s and the vehi cle can
break away - da nger of skiddin g!
Ii ] Tip s
In the event of a defect in the rear spoiler system or in Audi
magnetic ride, it can happen that ASR and ASR/ESP cannot be deac ­
tivated, or they are activated automatica lly in the deactivated
state. •
Vehicle care Do-it-yourself service Technical data

___ ln_ t _e_ ll-'"ig ...,_ e_ n_t _t_ e_ c_ h _ n_o _ l_o _,.g= y,_ __________________________________________ _
Electronic differential lock (EOL)
The electronic differential lock monitors the rotational
speed of the drive wheels.
General notes
The electronic differential lock (EDU helps the car to start moving,
accelerate and climb a gradient on surfaces providing poor or
almost no grip. Without EDL, this would be difficult, if not impos ­
sible.
How the system works
Th e EDL operates automatically. It monitors the rotational speed of
the drive wheels on an axle with the help of the ABS sensors
=> page 189. If a noticeable difference in rotational speed between
the drive wheels on one axle is detected (e.g. on slippery ground
on
one side),
the spinning wheel is braked, thereby transferring power
to the other drive wheel or wheels (all-wheel drivel. This is done up
to a speed of about 60 mph (100 km/hl. Noises from the brake
system signal that wheel spin is being controlled.
Driving off
When driving off, always be sure to keep road conditions in mind as
you accelerate . If one drive wheel spins because it is on a surface
with less grip, gradually increase the pressure on the accelerator
pedal until the car starts to move. The wheel less able to transfer
power spins.
Overheating of brakes
To prevent the disc brake of the braked wheel from overheating if
subjected
to excessive loads, the EDL cuts out temporarily . The
vehicle remains operational and behaves in the same way as a
vehicle without EDL.
As soon as the brake has cooled down, EDL switches on again auto­
matically.
& WARNING
• When accelerating on slippery surfaces, such as on ice or snow,
always be careful when depressing the accelerator pedal. Even
with the EDL working, the drive wheels can spin and reduce your ability to control your car. -Risk of crash!
• The increased safety afforded by EDL does not mean that you
can take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
[ i] Tips
If a fault occurs in the ABS, the EDL is also not functioning . This is
indicated by the ABS warning light=>
page 20. •
Anti-Slip Regulation System (ASR)
The Anti-Slip Regulation System prevents the driven
wheels from spinning when the car is accelerating.
General notes
The Anti-Slip Regulation System (ASR) is integrated in the electronic
stabilization program (ESP). When the vehicle starts up and acceler ­
ates , the wheels are prevented from spinning by adjusting the
engine power to match the amount of grip available from the road
surface .
How the system works
ASR performs automatically, i.e. without the driver's intervention .
With the aid of the ABS sensors =>
page 189, ASR monitors the
speed of the driven wheels. If the wheels start to spin, the engine
torque is reduced automatically until the tires find enough grip to
lock onto the road surface . The system is active across the entire
speed range.
The ASR works in conjunction with the ABS. If a malfunction should
occur in the ABS, the ASR will also be out of action .
~

Activating
The ESP is automatically activated when the engine is started and it
performs a self-test. You can activate a deactivated ASR if required
by pressing the=>
page 184, fig. 142 button. When it is activated,
the message
ESP/ASR on appears briefly in the display. Vehicles
with front -wheel drive a deactivated ASR automatically re -activates
itself at a speed of 40 mph (70 km/h).
Deactivating
You can deactivate the ASR if required by pressing the button (for
less than 3 seconds)=>
page 184, fig. 142. With the ASR deactivated,
the ESP check light comes on, see=>
page 18. The message ASR off
appears in the display as well. On vehicles with front -wheel drive:
deactivation is possible only up to 30 mph (50 km/h) for safety
reasons. Vehicles with all -wheel drive : the ASR can be deactivated
at any speed.
The ASR should normally be activated all the time. Only in certain exceptional situations when some slip is desirable does it make
sense to deactivate the ASR. Examples:
• when driving with tire chains
• when driving in deep snow or on loose ground and
• when rocking the vehicle loose after it has become stuck.
When the abnormal situation is over, you should activate the ASR
again.
& WARNING
The increased safety afforded by ASR does not mean that you can
take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
[ i J Tips
To ensure that the ASR works properly, all four wheels must be fitted
with identical tires. Any differences in rolling radius of the tires can
Intelligent technology
cause the system to reduce engine power when this is not desired.
See also ::::>
page 249, "New tires and replacing tires and wheels".
Rear spoiler
The rear spoiler improves vehicle handling and enhances
driver control.
Fig. 143 Switch for
rear spoiler
The rear spoiler deploys and retracts. Spoiler operation can be set
for automatic or manual operation .
Automatic mode (normal operation)
• Automatic deployment : At a speed of about 75 mph (120 km/h),
the rear spoiler deploys automatically.
• Automatic retraction: When speed drops below about 50 mph
(80 km/h), the rear spoiler retracts automatically.
Manual mode
• Manual deployment: Tapping briefly on the switch ::::> fig. 143
deploys the rear spoiler .
• Manual retraction: At speeds up to about 10 mph (20 km/h),
retract the rear spoiler by pressing and holding the switch
::::> fig. 143. At speeds between 10 mph (20 km/h) and 75 mph (120
km/h), retract the rear spoiler by tapping on the switch=> fig. 143 .
Vehicle care I I irechnical data

-Intelligent t echnology
--- =---- ----"-!...!-------------------------------
After 15 cycles (deploy and retract), manual operation is suspended
fo r up t o 2.5 minutes . Above 75 mph (120 km/h), operation swi tches
to automatic mode .
& WARNING
Driving at higher speeds witho ut the re ar spoiler deployed can
impair handling characteri stics, making the vehicle harder to
c ontrol.
• Always make sure that the spoiler i s deployed when driving at
speeds over 85 mph (140 k m/h). If the rear spoiler warning /ind i­
c ator light in the in strument clu ster come s on , the rear spoiler
may not have deployed .
• Never drive at speed s higher than 85 mph (140 km /h ) if the
spoiler is not deployed . Have the spoiler inspe cted as soon as
po ssible by an authorized Audi dealer or qualified workshop.
• Always obey speed limits and other traff ic law s.
& WARNING
Improper operation of the rear spoiler can cause crushing injuries.
• Always make su re that nobody , especially children , is in the
way when the rear spoiler is deployed or retracted.
0 Note
Never push the vehicle or a pply force to the rear spoi ler -it cou ld be
damaged .
[ i ] Tips
Clean the spoi ler compartment every 2 to 3 months . The spoiler
compa rtment must always be free of ice, snow, leaves or other
debris. •
Braking
General "nformation
What aff ects braking effi cie ncy?
Operating condition s and driving habits
The brakes on today's automob iles a re sti ll sub ject to wea r,
depending large ly o n operati ng co nditions and driving habits~&.
On vehicles which are driven mostly in stop -and -go city traffic or
whic h are driven hard, the brake pa ds shou ld be checked by your
authorized Audi dea ler more often than specified in the
Mainte ­
nance
& Warranty booklet.
On steep slopes, you should use the braking effect of the en gine.
Th is way, you prevent u nneces sary wea r on the brake syste m. If you
must use your brakes, do not ho ld the brakes down continuous ly.
P ump the brakes at interva ls.
Moisture or road salt
U nde r certain co nditi ons, for example, when driving th rough water
or v ery heavy rain, or eve n after washing your vehicle, the braking
effec t can be red uced d ue to mo isture (o r in freezing c onditions ice)
o n the brake pads . A few cautious brake appl ica tions should dry off
the brake pads or remove any ice coat ings.
T he effe ctiveness of the brakes can be reduced when the ve hicle is
driven on a sa lt -covered road and the brakes are not used. Li kewise,
you clean off accu mulated sa lt co atin g fr om bra ke discs a nd pads
with a few cautious applications of the brake~&.
Corrosion
There may be a tendency for dirt to build up on the brake pads and
corr osi on to for m on the d iscs if the ca r is no t driven regu lar ly or
only for short trips with litt le use of the brakes .
I f the b ra kes a re not used frequently, or if co rros ion ha s formed on
the d iscs, it is adv isable to clean off the pads a nd discs by braking
firm ly a few times from a moderately high speed~& . .,_

--~ln~t~ e~ l~ li ~g ~e~ n~ t~ te ~ c~h ~n ~ o~ l'..!: o ~g~ yL ________________________________________ _
(ABS control range). In order for ABS to be ab le to operate optima lly
in th is range, you m ust keep the brake pe dal depressed -do not
"pump the brakes" .
Brake ass istant
T he brake power assist unit increases the pressure that you
ge nera te wi th the brake pedal. I t wo rks only whe n the e ngine is
running .
Automatic full braking
This function al lows fu ll braking in spite of high brake pedal forces
(e .g. whe n the b rakes are seve rely s tresse d beca use the veh ic le is
ful ly loaded). The driver notices this function through a reduction of
pedal force a nd i ncrease d pe dal trave l. W hen the brake peda l is
released, fu ll braking assist switches off again automatically .
If there is an ABS fail ure , the brake assistant and automatic fu ll
brak in g ass ist are not ava ilable.
& WARNING
• ABS cannot suspend the la ws of physics . You should keep this
in mind in particular on an icy or wet road . If ABS control of braking
intervenes , you should adjust your speed immediately to road and
traffic condit ions. Do not be tempted by the increased safety
provided to t ake risks -danger of an accident.
• Please keep in mind that the risk of an accident is increased by
dri ving too fast, pa rticularly in bends and on icy or wet roads , and
by driving too close to the vehicle ahead . The increased risk of an
accident cannot be reduced by the brake as sistant - danger of an
accident .
[ i ] Tips
If a ma lfunction occurs in the ABS, this is signa lled by an indicator
lig ht, see
=> page 20. •
Electro-mechanical power assist
-----
The e lec tro -m ec han ical pow er as sis t h el ps th e dri ver
w he n steering.
T he degree of power assist is electronically matched to vehic le
sp eed .
Th e power steering system ass ists the driver so that he can steer the
ve hicle wi th re duced phy sica l eff ort .
P ower steer ing w ill not wo rk if the engine is o ff. As a result, the
steering wheel wi ll be hard to turn.
& WARNING
If the system develops a problem, you must seek qualified profes­
sional assistance .
0 Note
If there is an electronic ma lfunction , servotronic will still funct ion
l ike a conventional power stee ring system, providing a constant
steer in g suppo rt fo rce t hat is no lon ge r proportionate to t he veh icle
speed . This is most noticeable when turning the steering wheel at
lo w spe eds (fo r examp le w hen park ing), -mo re effor t will be
required than usual.
• B e awa re of the d iffer ent than usua l ste ering response and
adjust your steering force accordingly.
• H ave the problem chec ked and set ri ght by an authorized Audi
dea ler as soon as possible .
• I f a steering ma lfunct ion occurs, this is signaled with the~ or.
@ in d ica to r ligh ts and a war ning tone, see . ._