2008 AUDI TT ROADSTER steering wheel

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•
& W ARNING (continu ed )
crashes and serious personal in jur ies . Have worn or da maged t ires
replaced immediately .
• Tires age even if they are not being u sed and can fail suddenly ,
especially at high speeds. T ires that are more than 6 years old can
only be used in an emergency and then w ith special care and at
low speed.
Glossary of tire and loading terminology
Accessory weight
means the co mbined we ig ht ( in excess o f those sta nda rd items
which may be rep laced) of automatic transmission, power steering,
power brakes, power w indows, powe r seats, rad io, a nd heater, to
the extent that these items are avai lab le as factory-installed equip­
m ent (w hether insta lled or not).
Aspect ratio means t he ratio o f th e height to t he w idt h of the tire in perce nt.
N umbers of 55 or lower indicate a low sidewa ll for improved
steer ing respo nse and b ette r overall ha ndl ing on dry pave ment.
Bead
means the part of the tire that is made of stee l wires, wrapped or
reinforced by ply cords and that is shaped to fit the rim.
Bead separation
means a breakdow n of the bond be tween co mponents i n the bead.
Cord
m eans the strands fo rmi ng the plies in the ti re.
& W ARNING (continued )
• Never mount used tires on your vehicle if you are not sure of
their "previous history. " Old used t ire s may ha ve been damaged
even though the damage cannot be seen that can lead to sudden
tire failure and lo ss of vehicle control.
• If you noti ce unusual vibration or if the vehicle pulls to one side
when driving , always stop as soon as it is safe to do so and check
the wheels and tires for damage . •
Cold tire inflation pressure
mea ns t he ti re pressure reco mm ended by the ve hicle ma nufacturer
for a tire of a designated size that has not been d riven for more tha n
a cou ple o f miles (k ilometers) at low speeds in t he t hre e ho ur per iod
before the tire pressure is measured or ad justed .
Curb weight
means the weight of a moto r vehic le with standard equipment
i nc lud ing the max imu m capac ity o f fue l, o il, and coola nt, a ir c ond i­
tioning and additiona l weight of optional equipment.
Extra load tire
means a tire designed to ope rate at higher loads and at higher infla­
tion pressures than the corresponding standard tire. Extra load tires
my be identified as "XL", "xi", "EX TRA LOAD", or "RF" on the side ­
wa ll.
Gross Axle Weight Rating ("GAWR ")
means the load -carrying capacity of a sing le ax le system, measured
at the ti re -ground interfaces.
Gross Vehicle Weight Rating ("GVWR "l
mea ns the ma ximum tot al l oade d weigh t of the vehicle.
Vehicle care
I t •

___ T_ i_ r_e _s_ a_ n_ d_ w_ h_ e_ e _ ls _________________________________________________ _
Check the tire sidewall (=> page 249,
fig. 164) to determine the designated
load rating for a specific ti re. •
Tire service life
The service life of tires depends on a lot of different things
including proper installation and balancing, correct tire
pressure and driving style.
Tread Wear Indicator (TWll
"' M
J
Fig. 162 Tir e tread:
tre ad we ar indi cator s
(TWll
Fig . 163 Rotating tires
for more even wear
The original tires on your veh icle have 1/16 inch (1.6 mm) high "wear
indicators" => fig . 162 running across the tread. Depending on the make, there will be six to eight of them evenly p
laced around the
t ire. Marks on the tire sidewall (for example "TWI" or other symbols)
indicate the positions of the tread wear indicators. Worn tires must
be rep laced. Different figures may apply in other countries =>& .
Tire p ressure
Incorrect tire pressure causes premature wear and can cause
sudden tire blow-out . Forth is reason, tire pressure must be checked
at least once a month
==> page 244.
Driving style
Driving fast around curves, heavy acceleration and hard braking
increase tire wear.
Rotating tires for more even wear
For all four tires on your vehicle to have the same service life, we
recommend that the front and rear tires are rotated according to the
tire manufacturer 's suggested tire rotation intervals. Please
remember the following:
• Tire rotation interva ls may differ from the vehicle service inter­
vals outlined in your Maintenance and Warranty Booklet .
• The longer one tire is used in one location on the vehicle, the
more it wears at certain points; therefore, we recommend that you
follow the tire manufacturer's suggested tire rotation intervals.
• Vehicles with front-wheel drive experience more tread wear on
the front wheels compared to a ll-wheel drive (quattro®l .
• Please rotate tires as shown ;;:;:, fig. 163.
• Extra care must be taken when rotating direction -specific tires
==> page 272.
Wheel balancing
The wheels on new vehicles are balanced. However, various situa­
tions during everyday driving can cause them to become unbal ­
anced, resulting in vibrations you can usual ly feel through the
steering wheel. ...

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Unbalanced wheels must be rebalanced to avoid excessive wear on
steering, suspension and tires. A wheel must also be rebalanced
when a new tire is installed.
Incorrect wheel alignment
Incorr ect wheel alignment can cause excessive tire wear, impairing
the safety of the vehicle. If tires show excessive wear, have the
wheel alignment checked by an authorized Audi dealer or qualified
workshop.
All Wheel Drive
Vehicles with quattro ® must always have tires of the same size,
construction and tread type. For details see
=> page 191.
& WARNING
Sudden tire failure can lead to loss of control, a crash and serious
personal injury!
• Never drive a vehicle when the tread on any tire is worn down
to the wear indicators .
• Worn tires are a safety hazard, they do not grip well on wet
roads and increase your risk of "hydroplaning" and loss of control .
• Always keep chemicals that can cause tire damage, such as
grease, oil, gasoline and brake fluid away from tires .
• Tires age even if they are not being used and can fail suddenly,
especially at high speeds . Tires that are more than 6 years old can
only be used in an emergency and then with special care and at
lower speeds.
• Never mount used tires on your vehicle if you are not sure of
their "previous history ." Old used tires may have been damaged
even though the damage cannot be seen that can lead to sudden
tire failure and loss of vehicle control. •
New tires and replacing tires and wheels
New tires and wheels have to be broken in.
Fig. 164 Tire specification codes on the sidewall of a tire
No.
©
0
©
©
©
©
Description
Passenger car tire (where app licable)
Nominal width of tire in mi llimeters
Ratio of height to width (aspect ratio)
Radial
ii Rim diameter code
Load index and speed rating
Vehic le care
I I irechnical data

-Tires and wheels
---------------------------------------------
& WARNING
Improper use of run-flat tires can cause vehicle damage that can
lead to loss of vehicle control, a crash and serious personal injury.
• Run-flat tires can only be used with special rims.
• Run -flat tires must always be monitored with a properly
programmed Tire Pressure Monitoring System.
• Always inspect a tire that has lost air to make sure it is safe to
drive with the tire in the run-flat mode .
• Never drive with run-flat tires that have been damaged in a
collision.
• Never drive with run-flat tires if heat build-up causes the tire to
give off smoke.
• Never drive with run-flat tires if the vehicle shakes or vibrates
severely.
• Never drive with a run-flat tire that develops sidewall cracks or
other damage while in use.
0 Note
Run -flat tires have special characteristics and requirements, that are
very different from conventional tires . Run-flat tires require special
rims for run -flat use and cannot be used on conventional wheel
rims .
[ i] Tips
• If you are not able to continue driving with run-flat tires, please
seek professional assistance.
• Please contact your authorized Audi dealer or Audi of America,
Inc. if you have questions about tires and rims. •
Applie s t o vehic le s: wi th Run -flat tires
Driving with run-flat tires
Handling characteristics change when tire pressure is
low.
Driving on tires with low tire pressure changes the way a
vehicle handles, particularl y when cornering and braking.
The handling characteristics of run-flat tires do not seem to
change a lot even when driving on low pressure or in the
run -flat mode . Nevertheless you must still take special
precautions when operating a vehicle on run-flat tires when
tire pressure is low o r the tire(s) is flat:
- The Electronic Stabilization Program (ESP) must be
switched on.
- Never drive faster than 50 mph (80 km/h)~ &.
- Plan ahead when driving and anticipate what you will
have to do considering traffic and road conditions up
ahead.
- Accelerate carefully.
- Avo id unnecessary and sudden steering and braking
maneuvers .
- Reduce your speed in plenty of time before intersections,
curves and other places where you may have to react
quickly.
P lease see:=:, page 257, "When it is not possible to continue driving,
even with run-flat tires?" ..,_

___ A---" lp_h_ a_b_ e_ t_ i_ c _ a_ l_ in_d_ e_x ______________________________________________ _
A
A/C operation
Climate control
ABS 102
See Anti -Lock Brake System . . . . . . . . 189
Accessories . . . . . . . . . . . . . . . . . . . . . . . . 296
Acoustic park assist rear .. .... .. ... ... ....... .... .. .
Acoustic parking system
Adaptive Light 109
109
defective . . . . . . . . . . . . . . . . . . . . . . . . 36
Adaptive light . . . . . . . . . . . . . . . . . . . . . . . 72
Adding Engine coolant ... .... ........... 228
Engine oil ....................... 225
Windshield washer fluid . . . . . . . . . . 236
Additiona l accessories .. ...... ...... . 296
Additives Engine oi l ....................... 225
Adjustable steering column .......... 105
Adjusting front seats ... .. .... .... .... 87
Adjusting steering column ...... .. ... 105
Adjusting the seats ...... .... ........ 89
Advanced Airbag System Children ........................ 169
Components .. .................. 153
Front airbags ......... .... ...... . 151
How the components work together 154
Monitoring . . . . . . . . . . . . . . . . . . . . . . 157
Weight -sensing mat .. .. .. .... .... 169 Air distribution
Climate control
Air recirculation mode Climate control ...... .... ... .. .. .
Air vents Climate control
Airbag 101
102
102
Warning/indicator lights ..... ...... 19
Airbag system . . . . . . . . . . . . . . . . . . 146, 165
Care ... ........... .... .... ...... 160
Child restraints ............ .... .. 170
Components (front airbags) .. ... ... 153
Danger of fitting a child safety seat on the front passenger seat . . . . . . . . . . . . 147
Disposal . . . . . . . . . . . . . . . . . . . . . . . . 160
Front airbags ................. ... 150
How do the front aiirbags work? . . . . 155
How many airbags does my vehicle have?
153
Important safety instructions on the knee airbag system .......... ....... . 163
Important things to know ......... 146
Indicator light .. ..... ....... ..... 157
Knee a irbags .. ...... ......... ... 161
Monitoring . . . . . . . . . . . . . . . . . . . . . . 157
PASSENGER AIR BAG OFF light ... .. 157 Alternator
See Generator . . . . . . . . . . . . . . . . . . . . 19
Anti -freeze
See Engine coolant system ...... .. 227
Anti-glare inside day-night mirror ...... 82
Anti-Lock Brake System .............. 189
Anti -lo ck brake system
Warning/indicator lights . ...... .... . 20
Anti-Slip Regulation System (ASR) How the system works . . . . . . . . . . . . 186
Anti-theft systems Anti-Theft Alarm System ........... 56
Electronic immobilizer ............. 49
Ashtray .............. ........... .... 94
ASR How the Anti-Slip Regu lation System
works ......................... 186
Asterisk What does it mean when something is
marked with an asterisk? ... .... .... 6
Audi magnetic ride .... .... ..... .. 17, 112
Description .... .... .... ...... .... 112
Indicator light .... .... ............ 17
Audi Service Repair Manuals and Literature .
294
Repairs .. .... ....... ...... .... .. 160 Auto Safety Hotline . .... .... .... ..... 136
Side airbags . ........ ....... ..... 164 Auto-Check Contro l ................... 29
When must the system be inspected? . . . Automatic transmission ............ 31
157 Auto-Check -Control
All Wheel Drive . . . . . . . . . . . . . . . . . . . . . 191
Alloy wheels . . . . . . . . . . . . . . . . . . . . . . . 207 Manual
transmission
Automatic belt retractor 31
141
air conditioning All-wheel drive Automatic car wash
Temperature .. ............ ... ... 100 Winter tires ..................... 254 See Washing .................. .. 201

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Automatic folding top
closing .. .... .... ....... ..... ... . 62
opening ... ... ... .... .... ... .... .. 62
Automatic headlight control .. ......... 70
Automatic transmission .. .... .... .... 113
Driving Notes ......... .... .. ..... 114
Emergency program .... ...... .... 119
Emergency release . . . . . . . . . . . . . . . 120
Ignition key safety lock . ...... ..... 106
Kick -down .. ... .. .... .... ...... .. 117
Launch Control Program ........... 117
Selector lever lock ........ .... .... 116
Selector lever positions .... ..... .. 115
Tiptronic ... .. .... .... ... .... .... 118
Tiptronic controls on the steering wheel
119
Average speed ... ... ..... ... .... .... . 39
Avoid damaging the vehicle ..... .... . 194
B
Battery .. ... .... .... .... ..... .. 231, 234
Battery location inside the engine
compartment . ...... .... .... 221, 222
Charging ........................ 235
Checking battery acid level .. .. 234, 235
Connecting ...................... 231
Disconnecting .... .... .... ...... . 231
Important warnings when working on the
battery ........................ 232
Replacing the battery .. .......... . 231
Winter operation ................. 231
Working on the battery ... .... .... . 232
Battery voltage . .... .... .... ... .... .. 35
Controls and equip­
ment Safety first
Before
driving . .... . .. ... ... ........ 128
Bi -Xenon headlights .................. 75
Blended gasoline . ... .... .... .... .... 214
Body cavity sealing ...... ...... ... .. . 207
Booster seats .. ...... .... .... .... ... 175
How do I properly install a booster seat in
my vehicle? . .......... .... ... .. 175
Safety instructions . .... .... ... .... 175
Brake fluid Changing the brake fluid .. ........ 230
Checking the brake fluid level ...... 230
What is the correct brake fluid level? 230
What should I do if the brake fluid warning
light comes on? ... .. .... .... .... 230
Brake fluid reservoir . ...... ...... .... 230
Brake light defective ........ .... .... .. 36
Brake system ... ... .. .... ........ 32, 230
Anti-lock brake system .. ....... .... 20
Brake Assistant ........ ... .. .... . 189
Brake fluid ................... .... 230
Brake f luid specifications for refill and
replacement .... ...... ...... .... 230
Brake pads ... ... .... .... .... .... 193
General information .............. 188
How does the moisture or road sa lt affect
the brakes? ..... ...... ...... .... 188
Warning/indicator lights .. ...... .... 20
Break -in period ...... ...... ... .. .... 192
Brake pads ...................... 193
Tires .. .... .... ... .... .... .... ... 192
Bulbs .... ... .... .. . .. .............. 277
C
California Proposition 65 Warning . .... 221
Battery specific .... ... .... .... .... 234
Capacities ... .... ........ ... .... .... 291
Car care ... .... ... .. .... .... .... .... 200
Interior ..... .... .. .... ........... 208
Plastic and vinyl .................. 204
Weatherstrips ..... .... ...... ..... 206
Care of exterior .. .... ....... ........ 200
Cargo area
See Luggage compartment . ... .... . 135
Catalytic converter ...... .... .... .... 193
CD changer ..... .... .... .... .... ..... 96
Certification ...... ... .... ...... ...... 45
Changing a flat tire ... .... .... ....... 267
Changing engine oil ............. .... 226
Chassis Undercoating .... ..... ... .... .... 207
See also Audi magnetic ride .... .... 112
Check ing
Battery acid level ......... ... . 234, 235
Engine coolant level .............. 228
Checking tire pressure . ... .... .... ... 244
Child restraint
Danger of using child restraints in the front seat .... ... .... .... .... ... 147
Child restraints Where can I get additional information
about chi ld restraints? ... ........ 180
Child safety ...... .... ... .... ... 168, 173
Booster seats .... .... .... .... ... . 175
Convertible child safety seats ... ... 174
Vehicle operation Vehicle care Do-it-yourself service Technical data

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Pass-through .. ..... .... ... .... .... .. 93 Proper safety belt position . ... .. ...... 142 Remote control ....... ... .. .. ... .. ... 48
Pedals ...... .... ... ........ .... .... 134 Proper seating position Resetting remote control ...... ... .. 52
Physical principles of a frontal collision 138
Polishing ...... .... .... ....... .... . 204
Pollen filter ......................... 99
Pollutant filter .. .... .... .... .... ... .. 99
Power locking switch ........... .... .. 53
Power locking system ... .... .... .... .. 50
Convenience close/open feature .... . 58
Locking and unlocking the vehicle from
inside .. .. .. .... .... ... .... .... . 53
Opening and closing the windows ... 58
Rear lid/trunk lid ..... .... .... .... . 55
Remote control ...... .... .... ... .. 48
Unlocking and locking vehicle . .... .. 51
Power seats
Adjusting the seatback ....... .... .. 91
Adjustment .. .... .... .... ...... ... 89
Power steering
See Electro -mechanical power assist 21,
190
Power top
Care and cleaning . ....... .... .... 203
Convenience close/open feature ... .. 63
Convenience opening/closing ... .... 63
Power window switches ...... ...... ... 57
Reactivating the system .... .... .... 59
Pregnant women
Special cons iderations when wearing a
safety belt . .... .... .... ... .... . 143 Front
passenger . ...... ........... 131
Occupants .. ...... ...... ... .. .... 130
a
Quartz clock .. ...... ..... .. .... .... .. 13
quattro®
See All Wheel Drive ............... 191
Question
R
What happens to unbelted occupants? .
139
Why safety belts? ... .. .... .... .... 137
Radiator fan .... .... ..... .. .... .... . 229
Rain sensor defective ................. 36
Reading lights ... ... ..... ... .... .... . 77
Rear lid ........ ....... ...... .... .... 55
Emergency release ......... ...... . 56
Rear light
Defective . ................... .... . 36
Rear spoiler . .... .... ....... ........ 187
Rear window defoggeir ............... 103
Rearview mirror Inside rearview mirror .. .... .... ... . 82
See also Mirrors ........... ....... . 82
Red symbols . ... .... .... .... .... ... . 31
Programming the Homelink® universal re- Refuelling ............... .... .... ... 216
mote contro l ... .... .... ... .... . 121 Release lever for hood .. .... .... .... . 219
Proper occupant seating positions .. ... 130 Remote
control garage door opener
(Homelink®l .... .... .... .... ... 121
Remote control key Unlocking and locking ..... .... .... . 51
Remo te master key
Battery replacement ...... .... .... . 48
Check light .. ....... .. ...... ...... 48
Remote rear lid release .... ... .. ...... . 55
Repair manuals ...... .... .... .... ... 294
Repairs Airbag system ................... 160
Replacement parts ... .... ... .... .... 296
Replacing Wheel rims .... .... ... ....... 249, 251
Replacing a fuse .. ...... .... .... .... 273
Replacing light bulbs .. ... .. . .... .. . . 277
Replacing tires and wheels ...... ..... 250
Reporting safety defects .. ... .... 136, 293
Reset button . .... ........ .... ... .... . 14
Resetting remote control ......... .... . 52
Retractor .......... .. .... ...... .... . 141
Reverse Automatic transmission .... ... .... 115
Rims Cas t alloy ..... .... .... .... .... ... 207
Replacing .... .... ....... ... . 249, 251
Stee l rims . .... ... .... ...... ... .. 206
Controls and equip­
ment Safety first Vehicle operation
Vehicle care Do-it-yourself service Technical data

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Run-flat tires 257
258
257
259
Driving
... ..... .. .... .... ...... .
Introduction . ....... ..... .... ... .
Replacing defects parts .... ...... .
s
S tronic 113
Driving Notes .. .... .... .... .... .. 114
Emergency program . . . . . . . . . . . . . . 119
Kick -down . . . . . . . . . . . . . . . . . . . . . . 117
Launch Control Program .... .. .... 117
Selector lever lock . . . . . . . . . . . . . . . . 116
Selector lever positions . . . . . . . . . . . 115
Tiptronic . . . . . . . . . . . . . . . . . . . . . . . . 118
Tiptron ic controls on the steering wheel .
119
SAFE ....... ... ..................... 14
Safe driving habits . ...... .... .... ... 128
Safety belt position . . . . . . . . . . . . . . . . . 142
Safety belts worn by pregnant women 143
Safety belt tens ioner
Service and disposal ... .... .. . .... 145
Safety belt warning light ...... ... . 19, 137
Safety be Its . . . . . . . . . . . . . . . . . . . . . . . . 141
Cleaning .. ........ ....... .... ... 212
Danger to passengers who do not wear a safety belt . . . . . . . . . . . . . . . . . . . . . 139
Fastening . . . . . . . . . . . . . . . . . . . . . . . 141
Improper ly worn ...... ........ ... 144
Not worn . . . . . . . . . . . . . . . . . . . . . . . 139
Safety belt position . . . . . . . . . . . . . . . 142
Safety instructions . . . . . . . . . . . . . . . 140 Securing child safety seats
..... .. .
Special considerations for pregnant women . .... ....... ...... ..... .
Tensioners ......... ... .... ..... .
Unfastening . ...... .... .... .... . .
Warning /indicator light .... .... .. .
Why YOU MUST wear them ....... . 177
1
43
144
143
137
137
Worn properly . . . . . . . . . . . . . . . . . . . 139
Safety compliance sticker ......... ... 288
Safety equipment .... ...... ... .. .... 128
Safety features for occupant restraint and
protection . . . . . . . . . . . . . . . . . . . . . 128
Safety guidelines Seat adjustment .................. 87
Safety instructions Engine compartment ....... ... ... 220
for booster seats . . . . . . . . . . . . . . . . . 175
for using child safety seats ...... .. 171
for using convertible child seats .... 174
for using infant seaits ............. 173
For using safety bel ts . . . . . . . . . . . . . 140
Monitoring the Advanced Airbag System
159
Safety lock Ignition key, automatic transmission 106
Seat adjustment Driver's seat . . . . . . . . . . . . . . . . . . . . . . 87
Front passenger's seat . . . . . . . . . . . . . 88
Front seats . . . . . . . . . . . . . . . . . . . . . . . 87
Head restraints . . . . . . . . . . . . . . . . . . 132
Head restraints, front seat ...... .... 92
Lumbar support .. ... .. ........ .... 91
Manual controls ..... ... ....... ... 88 Power
seats . . . . . . . . . . . . . . . . . . . . . . 89
Safety guide lines .. .... .... .... .... 87
Seat position Incorrect seat position ... .... ... .. 133
Seating capacity .. .... ....... .... ... 137
Seating position Driver ...................... .... 130
Front passenger ................. 131
How to adjust the front seats ... ... 131
Occupants
Seats 130
Number of seats ... .... ... ... .... 137
Selector lever positions
Automatic transmission .... .... ... 115
Service and disposal Safety belt tensioner .... .... ...... 145
Serv ice interval disp lay .... .... .... .. . 25
Service position for windshie ld wipers .. 80
Set menu ........................... 28
Set/Check button . . . . . . . . . . . . . . . . . . . . 15
Setting Date display
Digital clock
Side airbags .
. .. .. .... .... .... .... 13
13
Description ...................... 164
How they work . . . . . . . . . . . . . . . . . . . 165
Ski bag .. .... .... .... .... ... .... .... 93
Snow chains ..... .... .... ... .... ... 255
Sockets ............................. 95
Soft top
Care and cleaning ...... .... .... .. 203