steering wheel AUDI TT ROADSTER 2015 Owner's Manual

190 Tires and wheels
Tire service life
The service life of tires depends on a lot of
different things including proper installation
and balancing, correct tire pressure and driv­
ing style.
Fig. 138 Tire tread: tre ad wea r ind icators (TWI)
f ~----~
~ ..__ ____ __,
Fig. 139 Rotating t ires for more ev en wea r
Tread Wear Indicator (TWI)
The origina l tires on your veh icle have
1/16 inch (1.6 mm) high "wear indicators"
c::> fig . 138 running across the tread. Depend­
i ng on the make, there will be six to eight of
them evenly placed around the tire. Marks on
the tire sidewa ll (for example "TWI" or other
symbols) indicate the positions of the tread
wear ind icators . Worn tires must be replaced .
Different figures may apply in other countries
c::> & .
Tire pressure
Incorrect tire pressure causes premature wear
and can cause sudden t ire blow-out. For th is
reason, tire pressure must be checked at least
once a month
c::> page 186.
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 rota­
tion intervals. Please remember the follow­
ing :
- Tire rotation intervals may differ from the
vehicle service interva ls outlined in your
Warranty
& Maintenance 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 com­
pa red to all-wheel drive (quattro) .
- Please rotate tires as shown
c::> fig. 139.
-Extra care must be taken when rotating di-
rection-specific tires
c::> page 211 .
Wheel balancing
The wheels on new vehicles are balanced.
However, various situations during everyday
driving can cause them to become unbal­
anced, re sulting in vibrat ions you can usually
feel through the steer ing wheel.
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
Incorrect wheel alignment can cause exces ­
sive tire wear, impairing the safety of the veh i­
cle. If tires show excessive wear, have the
whee l alignment checked by an authori zed
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
c::> page 146 . ..,.

202 Tires and wheels
(80 km/h)
¢ page 202, Driving with run -flat
tires .
When it is not possible to continue
driving, even with run-flat tires?
- If the E lectronic Stabilization Control (ESC)
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 whee l turns , and
hit parts of the vehicle , such as the fuel 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 sidewall, appears.
A WARNING
Improper use of run-flat t ires can cause
veh icle damage that can lead to loss of ve­
hicle control, a crash and serious pe rsonal
injury.
- Run-flat tires can only be used with spe­ cial rims.
- Run-flat tires must always be mon itored
with a properly programmed Tire
P re­
ssure Mon itor ing System.
- Always inspect a tire that has lost air to
make sure it is safe to drive with the tir e
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 vehi­
cle shakes or v ibrates severely.
- Never drive with a run-flat tire that de­
velops sidewall cracks or other damage
wh ile in use .
- If you switch between standard and run ­
flat tires, an authorized Audi dealer or qualified workshop must reprogram the
control module .
-
(D Note
Run-flat tires have specia l characteristics
and requirements, that are very different
from conventional tires. Run-flat tires re­
quire special rims for run-flat use and can­
not be used on conventional wheel rims.
(D Tips
- If you are not able to cont inue driving
with run-flat tires, please seek professio­
nal assistance.
- Please contact your authorized Audi
dealer or Audi of America, Inc. if you
have questions about tires and rims .
Driving with run-flat tires
Applies to vehicles: wit h Run -flat tires
Handling characteristics change when tire
pressure is low .
Driving on tires with low tire pressure changes
the way a vehicle handles, particularly when
cornering and braking. The handling charac­
teristics of run-flat tires do not seem to
change a lot even when driving on low pres­
sure or in the run-flat mode . Nevertheless you
must still take specia l precautions when ope r­
at ing a vehicle on run-flat tires when tire pres­
sure is low o r the tire(s) is flat:
.,. The Electronic Stabilization Control (ESC)
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
brak ing maneuvers.
.,. Reduce your speed in plenty of time before
intersections, curves and other places where
you may have to react quickly.
Please see :
¢ page 202, When it is not possi­
ble to continue driving, even with run-flat
tires?

A
A/C operation . . . . . . . . . . . . . . . . . . . . . . . 70
Accessories .. ... .. .. ... ... .. .. .. .. . 227
Acoustic park assist . . . . . . . . . . . . . . . . . . 79
Adapt ive light . . . . . . . . . . . . . . . . . . . 20, 49
Adding Eng ine coolant .................. .. 172
Eng ine oi l ...................... .. 169
W indshield washer flu id . . . . . . . . . . . . 179
Addit ional accessories ............... 227
Additives Engine oil . ... .... .... ... .. .. .. .. .
Ad justab le steer ing column ........... .
Ad justing front seats ................ . 169
72
59
Ad justing s teering co lumn ... .. .. .. .. .. 72
Adjust ing the seats ................... 60
Advanced Airbag System Ch ildren
130
Components ............. .... .. ... 114
Front airbags . . . . . . . . . . . . . . . . . . . . . 112
H ow the components work together .. 116
Mon itoring . . . . . . . . . . . . . . . . . . . . . . . 118
Weight -sens ing mat ............... 130
Airbag system . . . . . . . . . . . . . . . . . 108, 126
Care ... .. .. ................. .. ... 121
Ch ild restra ints .................. .. 131
Components (front airbags) . . . . . . . . . 114
Danger of fitting a child safety seat on
the front passenger seat . .. .. .. .. .. . 109
Di sposal . .. ............. .... .. .. .
Fr ont airbags .. .. ..... ... .. .. .. .. .
How do the front airbags work? ... .. .
How many airbags does my vehicle
have? . ... . .... ............. .. .. .
Important safety instructions on the
knee airbag system ........ ... .. .. .
Important th ings to know .......... .
Indicator light ... .. ... ... .. .. .. .. . 12
1
112
1 17
114
124
108
118
Knee ai rbags ............. .... .. .. . 123
M oni tor ing . ............. .. .. .. .. . 118
P ASSENG ER AIR BAG O FF ligh t .. .. .. . 119
Repai rs .. .. ... .. ..... ... .. .. .. .. . 121
Side airbags . . . . . . . . . . . . . . . . . . . . . . 125
Warning/ indicato r lights ... .. ...... .. 15
When must the system be inspected? . 118
A lcantara
C leaning ... .. ... ..... ... .. .. .. .. . 157
Inde x 229
All-wheel drive . ..... . .. .. ..... ... .. 146
Winter tires ... .... . ... ...... ... .. 195
Alternato r .. .. .. .. ................. . 16
Anti-free ze
refer to Engine cool ing system ....... 171
Anti -lock brake system . .. ..... ... .. .. 141
Warning/indicator lights ..... ... .. .. . 18
Anti-s lip reg ulation ............. .... 141
Anti-theft systems
Anti -theft alarm system ............. 38
E lectronic immob il izer .. .. ..... ... .. . 33
Ashtray . ... .. .. .. .. .. ... ..... ... .. . 63
Aste ris k
Wha t does i t mean when something is
marked w ith an aster isk? . . . . . . . . . . . . . . 6
Audi magnet ic r ide . . . . . . . . . . . . . . . 21, 79
Desc ription .. .. .. .... ........... .. . 79
Ind icator light . .. .. .. ........... .. . 21
Audi Service Repair Manuals a nd Litera-
ture .......... ... .. .............. . 225
Automatic be lt retractor .. .... ... .. .. 103
Automat ic convert ible top
cl osing
... .. .. .. .... ........... .. . 43
opening . ... .. .. .. . .. ... .... ... .. . 43
Automat ic transm iss ion ......... .... .. 81
Driving Notes . . . . . . . . . . . . . . . . . . . . . . 83
E mergency p rog ram ........... .. .. . 86
E mergency re le a se .................. 86
Ign it ion key safety loc k ......... .... . 73
K ick -down ... .... .. . .. .. ..... ... .. . 85
La unc h Control Program
..... ... .. .. . 85
Se lector lever lock
82
Se lector lever positions ......... .. .. . 81
Tiptronic .. .. .. .. ................. . 84
Tiptronic controls on the steering wheel 85
Auto Safety Hot line . .. .. ..... ... .. .. . 98
Ave rage fuel mileage . . . . . . . . . . . . . . . . . 23
Average speed . . . . . . . . . . . . . . . . . . . . . . . 23
Avoid damaging the vehicle .... ... .. .. 150
B
Bat tery . . . . . . . . . . . . . . . . . . . . . . 175, 17 7
Charg ing .. .. .. .. ................. 178
Checking ba ttery acid level ... ... .. .. 177
Connect ing . ... .... . ... ...... ... .. 175
Disconnecting 175
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Seat adjustment Driver's seat . . . . . . . . . . . . . . . . . . . . . . . 59
Front passenger's seat . . . . . . . . . . . . . . . 60
Front seats . . . . . . . . . . . . . . . . . . . . . . . . 59
Head restraints .......... .... .. .... 94
Head restraints, front seat . . . . . . . . . . . 62
Manual controls . . . . . . . . . . . . . . . . . . . . 60
Power seats ................ .... ... 61
Safety guidelines ......... .. .. .. .. .. 59
Seat covers Cleaning . ............ ...... .... .. 157
Seating capacity
Seating position 100
Driver ... .. .... ............. .. .. .. 92
F ront passenger .......... .... .. .... 93
How to adjust the front seats . . . . . . . . . 93
Incorrect seat position . . . . . . . . . . . . . . . 95
Occupants .. ................ ... .... 92
Seats Number of seats ......... .. .. .. .. . 100
Selector lever emergency release . . . . . . . 86
Selector lever positions ........ ... .. .. 81
Service and disposal
Safety belt pretens ioner ... .. .. .. .. . 106
Service interval display . . . . . . . . . . . . . . . . 28
Service position for windshield wipers ... 56
Set menu .. .. ... .. ..... ... .. .. .. .. .. 25
Setting Date display . . . . . . . . . . . . . . . . . . . . . . . 11
Digital clock ................ .... ... 11
Shutting down vehicle ......... ... .. . 151
Side airbags Description .............. .... .. .. . 125
How they work ........... .. .. .. .. . 126
Side marker lights .............. .... . 48
Ski bag . ..... .. ................ ..... 62
Snow chains . ............. .. .. .. .. . 196
Sockets ... .. .. ............. .. .. .... 64
Sound system display . . . . . . . . . . . . . . . . . 22
Sources of information about child re-
straints and their use . . . . . . . . . . . . . . . . 140
Speedometer ............. .... .. .... 12
Speed rating letter code ........ ... .. . 192
Speed warning system .......... ... ... 75
Sport button . . . . . . . . . . . . . . . . . . . . . . . . 79
Sport mode . . . . . . . . . . . . . . . . . . . . 79, 143
Index 237
Starting assistance ................. . 217
Starting the engine . . . . . . . . . . . . . . 72, 73
What should I do if the engine does not sta rt? .. .. .. .. .. .... ........... .. . 73
Steering
refer to Electro -mechanical power as-
sist ......... ... .. ........... 17,145
Steering column Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . 72
Locking the steering . . . . . . . . . . . . . . . . 72
Steps for determining correct load limit . 189
Stopping the engine .. .............. .. 74
Storage .... .. .. .. .. .. ........... .. . 65
Compartment in the front seats . . . . . . . 65
Cup holder ...... .. ..... ........... 63
Glove compartment . . . . . . . . . . . . . . . . . 65
S tronic ..... ..... .................. 81
Driving Notes .. .. ............... .. . 83
Emergency program ........... .... . 86
Emergency release . . . . . . . . . . . . . . . . . . 86
Kick-down . . . . . . . . . . . . . . . . . . . . . . . . . 85
Launch Control Program ........... .. 85
Se lector lever lock . . . . . . . . . . . . . . . . . . 82
Selector lever positions ......... .. .. . 81
Tiptronic .... .. .. ................. . 84
Tiptronic controls on the steering wheel 85
Sun visors ........ .. ..... ........... 54
T
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . 10
Tail lights Cleaning ... ... .. .. .............. .
Tank flap
Unlocking the fuel filler flap by hand ..
Technical Data ...... ...... ......... .
Technical modifications
Temperature display 155
163
222
228
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . 26
Textiles Cleaning ......... ................ 157
The first 1,000 miles (1,500 km) and after-
wards ...... .. .. .. ................. 149
Tightening wheel bolts ........... .... 208
Tire mobility system ..... ....... .... . 205
Tire pressure . . . . . . . . . . . . . . . . . . . . . . . 186
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