2015 AUDI TT ROADSTER radio

178 Checking and filling
Ai r bubbles in the window can cause an inac­
curate reading. Carefully tap on the side of
the w indow.
- If the window is gr ee n, the battery ac id leve l
is correct.
- If the window has no c olo r or is brigh t yel­
low ,
the battery acid leve l is too low . Have
the battery tested by your authorized A udi
dealer or a qualified workshop .
- If the window is
black , then the batte ry is
insufficiently charged. Recharge the battery
as soon as possible ¢
page 178.
@ Note
Do not overfill the battery, otherwise bat­
tery acid will overflow through the vent
opening. This can damage the paint and
cause corros ion.
Charging of battery
Starting the engine requires a well charged
battery.
• Alw ay s rea d and heed all WARNING S be­
low ¢
A and ¢ A in Working on the bat­
tery on page 176.
• Switch off the ignit ion and all electrical con­
sumers.
• Make sure the area is well vent ilated when
you charge the battery .
• Connect charger cables.
ALW AYS conn ect
c harg er cab les POSITIVE
G) to POSITIVE
G) ; NEGATIVE Qto NEGATIVE Q.
• Switch on the charger .
•T urnoff the charger ¢,& .
• Disconnect the charger cables.
• Connect both battery cables to the battery if
necessary-
first plus, then m inus.
When charging at
low voltages (e.g . with a
tri ckle char ger), the battery cables do not
have to be d isconnected first. Before charging
at
high voltages, i.e. "fa st charg ing ", you
must disconnect both cables. In e ither case,
follow the instruct ions from the manufacturer
of the charger. Fastcharging a battery is
dangerou
s ¢.&. in
Working on the battery on page 176 .
It re­
quires special charging equipment and the
knowledge to go with it. We recommend hav­
ing your battery fast charged only by a quali­
fied workshop .
A d ischarged battery can
freeze at tempera ­
tures of only
32 °F (0 °C). Allow a frozen bat­
tery to thaw completely before attempting to
charge it¢,&.. However, we recommend not
us ing a thawed battery aga in because the bat­
tery casing can be cracked due to ice fo rma­
t ion and can leak battery acid.
Do not open the battery caps when charging
the battery .
A WARNING ,..__ -
Charging a battery can be dangerous.
- Never charge a frozen battery . It may ex­
p lode because of gas trapped in the ice .
Allow a frozen battery to thaw out first.
- Do not reuse batteries wh ich were fro­
zen. The battery hous ing may have
cracked and weakened when the battery
fro ze.
- Cha rge t he battery in a well venti lated
area. Keep away from open flame or elec­
tr ica l spar k. Do not smo ke. Hyd rogen gas
genera ted by the battery is explos ive .
- To reduce the danger of explosion, never
connect or d isconnect charger cab les
while the charger is operating.
- Fast charging a ba ttery is dange rous and
should only be at tempted by a compe­
tent technician with the proper equip­
ment.
- Battery acid tha t may sp ill dur ing cha rg ­
ing should be washed off with a solution
of warm water and baking soda to neu­
tralize the ac id.
(D Note
Neve r use a fast charger as a booster to
start the engine. This wi ll seriously dam­
age sensit ive e lectronic components, such
as contro l units, re lays, radio, etc., as well
as the battery charger.

-Never mount used tires on yo ur vehicle if
yo u are not sure of their "previous histo­
ry." Old used tires may have been dam­
aged even though the damage cannot be
seen that can lead to sudden tire failure
and loss of vehicle control.
- If you notice unusual vibration or if the
vehicle pulls to one side when d riving, al­
ways stop as soon as it is safe to do so
and check the wheels and tires for dam­
age .
(D Note
-Please note that summer and winter
tires are designed for the cond itions that
are typ ic al in those seasons. Aud i recom­
mends using w inter t ires du ring the win-
Glossary of tire and loading terminology
Accessory weight
means the comb ined weight (in excess of
those standard items which may be replaced)
of automatic tra nsmission, power steering,
power brakes, power windows, power seats,
radio, and heater, to the extent that these
items are availab le as factory-installed equip­
ment (whether installed or not) .
Aspect ratio
means the ratio of the height to the width of
the tire in percent . Numbers of 55 or lower in­
d icate a low sidewall for improved steering re­
sponse and better overall handling on dry
pavement .
Bead
means the pa rt of the ti re that is made of
steel wires, wrapped or reinforced by ply cords
and that is shaped to fit the rim.
Bead s eparation
means a b reakdown of the bond between
components in the bead.
Cord
means the strands forming the plies in the
tire.
Tire s an d wheel s 181
ter months . Low temperatu res signifi­
cantly decrease the elastic ity of summer
t ires, which affects traction and braking
ability. If summer tires are used in very
co ld temperatures, cracks can form on
the tread bars, res ulting in permanent
ti re damage that can cause loud drivi ng
noise and unbalanced tires. Aud i is not
responsib le for this type of damage.
- Burn ished, polished or chromed rims
must not be used in winter weather. Th e
surfa ce of the rims does not have suffi­
c ien t cor rosion pro te cti on for this and
c o ul d be pe rmanen tly damaged by road
salt or similar substances. This damage
is not covered by warranty.
Cold tir e inflation pressure
me ans the t ire press ure re commended by the
vehicle manufacturer fo r a tire o f a des igna ted
size that has not bee n driven for more than a
coup le of miles (k ilomete rs) at low speeds in
the three hour pe riod before the tire press ure
is measured or adjusted.
Curb weight
means the weight o f a motor vehicle with
standard equipment including the maximum
capacity of fuel, o il, and coolant, air cond i­
tion ing and additional weight of optiona l
equipment.
E xtra load tire
means a tire designed to operate at higher
l oads and at higher inflation press ures than
the corresponding standard tire. Extra load
tires my be ident ified as "XL", "xl", "EXTRA
LOAD", or "RF" on the sidewall.
Gross Axle Weight Rating ("GAWR")
means the load-carrying capacity of a single
axle system, measured at the tire-ground in-
ter~ces.
~
•
•

214 Fuses and bulb s
No. Equipment
24 Transmi ssion (contro l un it)
25 Heate
r rear window Coupe /
heated rear window Roadster
26 Driver'
s side power window
27 Passenger's s ide power window
28 No
t used
29 Washer pump
30 Cigarette lighter
31 Start er
32 Steering column module
33 Instrument clust er
34 Radio navigation system , radio
35 Aud io amplifi er
36 Engine (control un it)
37 CAN (Gat
eway)
38 Ciga
rette lighter
39 Not us ed
40 Not used
4 1 Not u sed
42 Not used
43 No t used
44 Not used
45 No
t used
46 Not used
47 SOARS tuner, cell phone pack-
age,
TV tuner
48 VOA interface
49 Not used
Fuse location, left side of engine
compartment Amps
15
30/ 20
30 30
15
20
40 5
5
20/15
30 10
5
20
5 5
Fi g. 162 Ill ustra tion of fus e ho lde r on l eft side o f en·
gi ne compar tment: fuse s (withou t fuse c over)
Some of the equipment items listed are op ­
tiona l or only avai lable on c ertain mod el con­
figurations.
Note tha t the foll owing table i s ac cur ate at
the time of going to pre ss and is subject to
change .
Fus e holder (bla ck )
No . Equipment Amps
1 Not used
2 Not used
3 Not used
4 No t used
Anti- theft warning system (sen -
5 sor), ant
i-theft warn ing system
5
(horn)
6 Headlamp washer system
30
7 Elec
tric fuel pumps (supp ly)
15
8 W
indshield wipers
30
9 H
eat ed seats (dr iver and pas-
25
senger)
10 L
umbar support (d river and
10
passenger)
11 Not u sed
12 Vent ilation blower 40
Fus e holder (brown )
No. Equipment Amps
1 Not used
2 Not used
3 Not used
4 Not used
5 Relay coil
relay volume cont ro l
5
va lve
6 02
sensors
10
7 P
ositioning valves pre-wired en-
10
gine harness
8 Ignition coi ls 20
9 Eng
in e (cont rol unit)
25
10 Water pump de layed-off 10
1 1 F
e e d (brak e pedal)
5
1 2 Activated charcoal filter/charge
10
p ress ure control va lve

228 Consumer Information
Technical Modifications
Our guidelines must be complied with when technical modifications are made .
Always consult an authorized Audi dealer be­
fore starting work on any modifications.
This will help ensure that vehicle function,
performance and safety are not impaired
¢ &. .
Attempting to work on electronic components
and the software used with them can cause
malfunctions. Because of the way electronic
components are interconnected with each
other, such malfunctions can also have an ad­
verse affect on other systems that are not di­
rectly involved. This means that you risk both
a substantial reduction in the operational
safety of your vehicle and an increased wear of
ve hicle parts ¢
A:,..
Author ized Audi dealers will perform th is
wo rk in a professiona l and competent manner
or, in special cases, refer you to a professional
company that specializes in such modifica­
tions .
A WARNING
Improper repairs and modifications can
change the way vehicle systems work and
cause damage to the veh icle and serious
personal injury.
If emergency repairs must be performed
elsewhere, have the vehicle examined by
an authorized Audi dealership as soon as
possible.
Declaration of Compliance, Telecommu­
nication or Electronic Systems
-
Radio Frequency Devices and Radiocommuni­
cation Equipment User Manual Notice.
The manufacturer is not responsible for any
radio or TV interference caused by unauthor­
ized modifications to th is equ ipment.
Devices
T he following devices each comply with FCC
Part 15.19, FCC Part 15.21 and RSS-Gen Issue
1:
- Cell phone package
- Electron ic immobilizer
- Homelink universal remote control
- Remote control key
FCC Part 15.19
This device complies with part 15 of the FCC
Rules . Operation is subject to the fo llowing
two conditions:
(1) This device may not cause harmful inter­
f erence, and
(2) this device must accept any interference
received, including interference that may
cause undesired operation.
FCC Part 15.21
CAUTION:
Changes or modifications not expressly ap­
proved by the party responsible for compli­
ance could vo id the user's authority to operate
the equipment.
RSS-Gen Issue 1
Operation is subject to the following two con­
ditions:
(1) this device may not ca use interference,
and
(2) this device must accept any interference,
including interference that may cause unde­
s ired operation of the device.

238 Index
Tire pressure monitoring system ...... . 198 Trip computer ..... ............. ..... 23
Loss of air pressure ........ ... .... .
199 Single-trip memory ................. 23
M alfunct ion . ............. ... .... .
199 Tota l-trip memory .................. 23
Resetting tire pressures . . . . . . . .
200, 201 Trip odometer . .. .. ............. .. .. . 12
Tire repair kit ............. .. .. .... . 205 What does it mean when dEF appears in
Tires .. .. .... .......... ........ ... .
180 the trip odometer display? ....... ... . 12
Replacing .. ................ ... ... 191 Trunk lid ...... ... .. .............. .. 37
run-flat .. ... ............ .. .. .. .. .
201 Trunk escape handle ........... .. .. 204
Service life .............. .. .. .... . 190 Turn signals ... .. .. ............. .. .. . 50
speed rat ing letter code . .. .. .. .. .. . 192 Warning/indicator lights ........ .. .. . 21
Tire manufacturing date ......... ... 192
Tire specifications ............ .... . 192 U
Tread depth .............. ... .... . 190
Uniform tire quality grading .. .. ..... 194
Winter tire s ............... .. .... . 195
Tires/Whee ls
Low aspect ratio tires ....... ... .. .. .
197
Tire mobility system ....... .... ... . 205
Tire pressure monitoring system .... . 198
Tire repair kit ............ .. .. .. .. . 205
Tir es and vehicle load limits ... ... .... . 188
Tires and wheels
Check ing tire pressure ..............
186
Cold tire inflation pressure ..... .. .. . 184
Dimensions ............ .. .. .. .. .. .
191
General notes .............. .. .... . 180
Glossary of tire and loading termino lo-
gy . ... .... ................ ..... .
181
New tires and wheels ............... 191
Replacing ............... .. .. .... . 192
Snow chains ............... .. .... . 196
Tires and vehicle load limits .. .. .. ... 188
Wheel bolts ... ... .... ..... .. .. .. .
197
W inter t ires ... .......... .. .. .. .. . 195
Tire serv ice life .. .......... .. .. .... . 190
Tool kit ..... ................ ..... . 204
Towing
Front eyelet .................. ....
219
Rear eyelet ... ......... .. .. .. .. .. . 220
Tow truck procedures ............... 218
TPMS
Tire pressure monitoring system .. ... 199
Trailer towing . . . . . . . . . . . . . . . . . . . . . . 153
Transmission
S tron ic transmission ................ 81
Transport Canada . . . . . . . . . . . . . . . . . . . .
98
Tread Wear Indicator (TWI) ... ... .. .. . 190
Unfastening safety belts
Unidirectional tires .... .......... .. . .
Uniform tire quality grading ......... .
Univ ersal Radio- Frequency Remote Con-105
180
194
trol (HomeLink) . .. ............. .. .. . 88
Unlocking
Power locking switch ......... .. .. .. .
36
Rear lid/trunk lid ................. .. 37
Remote control key .................
35
Using the key ...................... 36
V
Vanity mirror . . . . . . . . . . . . . . . . . . . . . . . . 54
Vehicle
care/cleaning .. .. ... .......... ....
154
Vehicle electrical system ......... .... . 16
Vehicle Identification Number (V IN) . ... 222
Vehicle jack ... .. .. ....... ...... .. .. 209
Vehicle literature ..................... 5
Vehicle shut-down .............. .. ..
151
Vehicle tool kit .. .. ....... ...... .. .. 204
Ventilation ..... .. ............. ..... 67
Vinyl
Cleaning .. ...... ............. ....
157
w
Warning/ind icator lights . . . . . . . . . . 10, 12
Airbag system . .. ............. .. .. . 15
Anti-lock brake system (ABS) . . . . . . . . . 18
Brake system . . . . . . . . . . . . . . . . . . . . . .
14
Convertible top . . . . . . . . . . . . . . . . . . . . 17
Cruise contro l . . . . . . . . . . . . . . . . . . . . . . 21
Electronic power control .......... .. . 19