AUDI TT ROADSTER 2008 Owners Manual

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•
Handling characteristi cs change wh en dri ving with
low air pressure or with flat tires even with special run ­
flat tires
A low pressure or flat front tire affects vehicle hand lin g charac te ri s­
t ics by pulling the vehic le slightly to the side where the tire is
mounted and reduces brak ing performance .
A low pressure or flat
rear tire also affec ts driving c haracteristics by
pul ling to the side where th e tire is mounted and also reduces
b raki ng per for mance . T he ef fec t o n ve hic le han dlin g is most n otice ­
able when driving around curves .
& WARNING
Changed vehicle handling characteristics when driv ing in the run­
flat mode can cause lo ss of vehicle control , a crash and serious
personal injury .
• Driving on special run-flat tires in the run -flat mode will change
vehicle handling characterist ics during braki ng , when cornering
and under heavy acceleration .
• Never drive faster than the max imum rated speed of 50 mph
(80 km /h) when driving in the run -flat mode .
• Always adjust vehicle speed to traffic , road and weather condi­
tions and drive slower than the maximum rated speed if nece ssary
weather and road conditions are taken into ac count .
• Always obey speed limits and other traffic laws .
0 Note
We always recommend driv ing with even more care when using
these special tires in the run -flat mode. A lways avoid sudden
m aneuvers. •
Applies to vehic les: with Run-f lat tires
Replacing run -flat tires and rims
Y our vehicle was especi ally des igned to use special run­
fl at t ires.
You may use and c ombi ne o nly approved run -flat t ires a nd specia l
matching rims that have been designed for run -flat tires. Mounting
special run -fla t tires o n stan dard wheels w ill not work and wi ll not
provide the advantages fo the run -falt feature. Never us e special
run-flat tir es o n standard whee l rims.
After driving with a tire in the run -f lat mode, always have the vehicle
and affected tire(s) and rim(s) inspected by an a uthorized Audi
dea ler. T ires tha t have been driven i n the run -fla t mode mus t be
replaced.
& WARNING
Use of damaged run-flat tires and rims c an cause vehicle damage
that can lead to loss of vehicle control , a crash and serious
personal injury.
• Always have the vehi cle and affected tire (sl and rim(s )
inspe cted by an authorized Audi dealer after driving a tire in the
run -flat mode .
• Tires that have been driven in the run -flat mode must be
repla ced .•
Vehicle care
I t •

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What do I do now?
Trunk escape handle
In case of an emergency, the rear lid can be opened from
the inside using the trunk escape handle.
F ig . 165 Lug gag e
co mp artm ent: T runk
escape handl e
- To open the trunk lid pull the hand le down as indicated
by t h e -arrow -~ fig. 165.
The trunk escape handle inside the storage compartment is made
of fluorescent materia l to glow in the dark.
& WARNING
The tr un k es cap e handl e is to b e use d onl y in an em ergen cy. •
Vehicle tool kit
The tools are st ored underneath the floor panel in the
luggage c ompartment.
Fi g. 16 6 Lugga ge
co mpa rtm ent : ve hic le
t o ol kit
- Sw ing the luggage compartment floo r upwards .
- Remove the ve hicle tool kit .
The onboard tool ki t includes:
• Hook for removing wheel covers *
• Plastic clip to remove wheel bolt covers*
• Wheel bolt wrench
• Alignment pin for changing wheels
• Screwdriver wi th reversible blade
• Replacement bit (r eve rsible Torx bit for changing lamps)
• Open ended wrench 10 x 13
• Towing eye
Note: some of the on board items listed above are prov ided on
certain models only or a re optional extras.

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& WARNING
• Using a bumper jac k to raise the vehicle will damage the
bumper system . The jack may slip , causing injury .
• Never support your veh icle on cinder blocks , bri cks or other
obje cts. The se may not be able to support the load and could
c ause injury when they fail.
• Never start or run the engine while the vehicle is supported by
the jack .
• If you mu st work under the vehicle, always use safety stands
specifically des igned for this purpose .
• Never use the he xagonal socket in the handle of the screw­
driver to loo sen or tighten the wheel bolts . •
Tire repair
App lies to vehicles: with Tire Mob ility System
General and safety pointers
Tire repair is in tended only for te m porary, shor t- te rm use.
®
Fig . 16 7 Tire damage
for which the Tire Mobility Sy stem is not
suited
Your vehicle is equipped with a tire repai r kit, the Tire Mobil ity
System (TMS) *. I
n the event of a tire fai lure, the TMS is in the luggage compartment
u nde r th e floo r. It cons ists of the tir e sealan t and an el ectric a ir
pump .
U sing TMS, tire damage caused by foreign bodies up to about
0 .16 inch (4 mm ) in diam eter can be seale d relia bly.
T he foreign object can stay in the tire .
The tire sealant must not be used:
• for cuts or punctures in the tire which are large r than
0.16 inch (4 mm)~ fig . 167
G)
• for damage to the rim 0
• if you have been driving with very low tire pressures or tires w ith
n o air G)
Using the TMS is described in the section~ page
264, "Preliminary
steps" .
TMS can be used a t te m peratures down to -4 °F ( -20 °C).
& WARNING
Take the following precautions after repairing the tire :
• Do not drive faster than 50 mph (80 km /hi!
• Avoid full -throttle acceleration , heavy braking and fast
cornering .
• The vehicle's road behavior can be affe cted .
• Tires sealed with TMS are intended only for temporary , short­
term use .
• After using the tire sealant the tire pressure monitoring system
m ay no longer work properly . Drive carefully to the next profes­
s ional repair facility.
• TMS must NOT be used ,
- for cuts or punctures in the tire whi ch are larger than
0 .16 inch (4 mm )
- for damage to the rim
Vehicle care Do-it-yourself service irechnical data

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& WARNING (continued)
-if you have been driving with very low tire pressures or tires
with no air
• Seek professional assistance if it is not possible to repair the
tire with the tire sealant.
& WARNING
The tire sealant must not come into contact with skin, eyes or
clothing.
• If you get any tire sealant
in your eyes or come into contact
with it, rinse the affected area thoroughly with clean water. Find a physician immediately!
• Change any clothing contaminated with tire sealant immedi ­
ately.
• Do not inhale the vapor!
• If you have swallowed tire sealant, rinse your mouth thor­
oughly right away and drink plenty of water .
- Do not induce vomiting! Find a physician immediately!
• If you have allergic reactions, find a physician immediately .
• Keep the tire sealant away from children .
0 Note
Do not use commercially available tire sealants. The electrical
components of the tire pressure monitoring system will no longer
work properly.
'i> For the sake of the environment
Used sealant bottles can be dropped off at a recycling facility.
[ i] Tips
• If sealant has run out, allow it to dry. Then you can peel it off.
• Have the tire sealant replaced every 4 years at a dealership. •
Applies to vehic les: with T ire Mob ility System
Preliminary steps
Some preliminary steps are necessary for tire repair .
Fig. 168 Tire Mobility
System under luggage
compartment floor
- If you have a flat tire, park the vehicle as far as possible
from moving traffic.
- Apply the
parking brake firmly.
- On vehicles with manual transmission, engage
1st gear,
or move the selector lever to the P position on vehicles
w ith automatic transmission.
- Check whether a repair using the Tire Mobility System is
possible~
page 263, "General and safety pointers".
Have all passengers
leave the vehicle and stay away from
the danger zone~&.
- Take the
sealant bottle and the electric air pump from the
luggage compartment under the floor ~ fig. 168. .,_

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- Remove the "max. 50 mph" (80 km/h) sticker from the
sealant bottle and affix it to the instrument cluster in the
driver's view.
& WARNING
• Turn the hazard flashers on and set up the warning triangle if
you have a flat tire in moving traffic . In this way you protect your ­
self and other road users.
• Make sure that all passengers are in a safe place, out of the
danger zone (for example, behind a guard rail).
0 Note
Particular care is necessary if you are making a tire repair on a steep
incline.
[ i] Tips
Obey all laws. •
Applies to vehicles: with T ire Mobil ity System
Making a tire repair
Tire repair consists of the following sections.
Fig. 169 Parts of the
Tire Mobility System Fig
. 170 Connector for
the Tire Mobility System
Assembling Tire Mobility System
- Open the lid 0 of the electric air pump~ fig. 169.
- Pull the plug© and the pressure hose G)with the gauge
out of the housing.
- Screw the pressure hose© of the electric air pump onto
the flange © of the sealant bottle
G).
- Push the sealant bottle with the flange down into the
recess
G) on the lid of the electric air pump.
- Remove the dust cap from the valve of the defective tire.
- Screw the hose @) onto the valve
G) ~ fig. 170.
- Insert the plug©~ fig. 169 into the socket for the ciga-
rette lighter.
Inflating tire
- Move the switch®~ fig. 170 on the electric air pump 31
to position I. After 5 minutes, tire pressure must have
reached at least 1.8 bar.
~
3> The e lectric air pump should never run for longer than 8 minutes.
Vehicle care Do-it-yourself service irechnical data

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- Switch the electric air pump off - switch in position
0. If
the required tire pressure of at least 1.8 bar has not been
reached, follow the instructions in the section Re­
inflating tire.
Re-inflating tire
-Remove the hose from the valve and pull the plug out of
the socket.
- Drive the vehicle slowly 10 meters backward or forward.
This helps to distribute the sealant better.
- Remove the empty inflation bottle and screw the hose
G)
=> page 265, fig. 169 from the electric pump directly onto
the valve.
- Insert the plug ©=>
page 265, fig. 169 into the socket for
the cigarette lighter.
- Move the switch
@ => page 265, fig. 170 on the electric
air pump
31 to position I. After 5 minutes, tire pressure
must have reached at least
1 .8 bar.
- Switch the electric air pump off - switch in position
0. If
the required tire pressure of at least 1.8 bar has not been reached, it is not possible to make a repair with the tire
sealant. Seek professional assistance.
Disassembling Tire Mobility System
- Remove the hose from the valve and pull the plug out of
the socket.
- Screw the dust cap onto the valve.
- Place the empty sealant bottle back in the original pack-
aging and cl ip it in place under the floor so that no tire
sealant can run out into t he vehicle. -
Place the electric air pump in the luggage compartment
for the time being.
- Start driving right away so that the sealant is distributed
in the tire.
& WARNING
• Follow the manufacturer's safety instructions on the decal for
the air pump and the sealant bottle.
• If a tire pressure of 1.8 bar cannot be achieved after pumping
for 5 minutes, the tire is too severely damaged. Do not continue to
drive.
• Seek professional assistance if it is not possible to repair the
tire with the tire sealant.
[ i] Tips
• Do not operate the electric air pump for more than 8 minutes
without stopping, otherwise it can overheat. When the air pump has
cooled down, you can continue to use it.
• If sealant has escaped, allow it to dry, then you can peel it off. •
Applies to vehic les : with Tire Mobil ity Sys tem
Final check
After driving for a short distance , tire pressure
must be checked
- After driving for about 10 minutes, stop and check the
tire pressure .
- If tir e pressure is still at least 1.3 bar, inflate the tire to
specified pressure (see driveas side B -pillarl, drive to the
next repair shop and have the tire and the sealant bottle
replaced.
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- If tire pressure is less than 1.3 bar, the tire is too severely
damaged. Do not continue to drive. Seek professional
assistance.
& WARNING
If tire pressure is less than 1.3 bar after driving for 10 minutes, the
tire is too severely damaged. Do not continue to drive. Seek profes­
sional assistance.
[ i] Tips
After a tire repair, have the sealant bottle replaced at a dealership.
This restores full functionality to the Tire Mobility System. •
What should I be aware of when
changing a tire?
General information
The following sections will provide you with important information
on how to change a tire using the vehicle tool kit .
However , we recommend that you have a qualified service center
change the tire and perform all work associated with changing it.•
Ap plies 10 vehicles: with decora tive wheel covers
Decorative wheel covers
The decorative wheel covers must be removed first to
access the wheel bolts.
Removing
Fig. 171 Wheel
change : removing the
wheel cover
- Insert the hook provided with the on board tool kit into
the hole on the center hub piece.
- Pull off the
decorative wheel cover=> fig. 171. •
Vehicle care Do-it-yourself service Technical data

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App lies to veh ic les : w it h cap-cove red whee l bo lts
Wheels vvith cap -covered wheel bolts
The caps must be removed first from the wheel bolts
before the bolts can be unscrewed .
Remo ving
Fig . 172 W hee l
c h an ge: remo vin g t he
wh eel b olt caps
- Push the plasti c clip provided with t he on board tool kit
down over the wheel bo lt cap until it engages.
- Pull on the properly engaged plas tic c lip to ex tract the
cap
=> fig. 172 .
Refi tt ing
- Place the caps over the wheel bolts and push them back
1n.
The caps are there to prot ect and keep th e wheel bolts cl ean .•
Loosening and tightening the wheel bolts
The wheel bolts must be loosened before raising the
vehicle .
Lo os enin g
Fig. 173 Wheel
c h an ge : loose nin g the
wheel bol ts
- Fit the wheel b olt wr ench over the wheel bolt and push it
down as far as it wi ll go .
- Close your grip around the
end of the wrench hand le for
maximum torque and turn the wheel bolts counter-c lock ­
wis e about
one single turn in the direct ion of arrow
=> f ig . 173 .
Tight ening
Fit the wheel b olt wr ench ove r the wheel bolt and pus h it
down as far as it wi ll go.
- Close your gri p around the
end of the wrench hand le for
ma ximum torque and turn eac h wheel bolt clockwi se
until it sits tight . _..