2008 AUDI TT ROADSTER climate control

Table of contents
Table of contents
Vehicle literature ........ .
About this Owner's Manual .............. ...... . .
Controls and
equipment .. .. ... . .. ... ... . .
Cockpi t ... .......... ...... ..... .
Genera l ill ustration ............. .
Instruments and
warning/indica tor lig hts ....... .
Instruments .............. ..... .
Warning/indicator lights ........ .
Driver informa tion system ..... .
Introduction ............... .... .
On-Board Diagnostic system (080)
Menu display ...... ............ .
Au to-Check Control ... ... .... .. .
Speed warn ing system . ... ..... .
Trip computer ................. .
T ire pressure monitoring system ..
Opening and closing .......... .
Keys .......................... .
Powe r lock ing system ..... ..... .
Rear lid /tr unk lid .............. . . 5 Ant
i-theft a larm system ........ .
Power w indows ... ... .... .... .
Folding top ................ ... .
Folding top ... .. ..... ...... ... .
6 W ind Deflector ........... ... .. .
E merge ncy Ope rat ion of the Fold ing
Top ........... ............ .. . .
Clear vision . ... ............ ... .
56 Cruise control . . . . . . . . . . . . . . . . . . 11 O
57 Audi magnetic ride . . . . . . . . . . . . . 112
60
Transm1ss1on . . . . . . . . . . . . . . . . . . . 113
60 Manua l transmiss ion . . . . . . . . . . . . 1 13
64 S tron ic tra nsmission . . . . . . . . . . . 1 13
64
69
Home link® . ...... .. ... ... ... .. .
Universa l remote control ....... .
121
121
Lights . . . . . . . . . . . . . . . . . . . . . . . . . 69
In ter io r lights ....... ..... ... .. .
V is ion ..................... ... .
W iper and washer system ...... .
Mirrors ..... ............... ... .
Digital compass ............... .
9 Seats and storage ......... ... .
11
1 1
1 2
12
1 6
22
22
26
27
29
37
39
41
47
47
50 55 Genera
l recommendat ions ..... .
Ad justing front seats manua lly ..
Powe r seats ..... ....... .... .. .
Lumbar support .. ............. .
Head restraints ............•...
Luggage compartment ........ .
Cup holder ... ...... ... ..... .. .
As htray ................... ... .
Cigarette lighter /socket ..... ... .
Storage ............ ....... ... .
Warm and cold ............... .
Climate controls ....... ... .• .. .
Rear window defogger
Qlil ..••.••
Heated sea ts .. ..... ..... ..... .
On the road . ... .. .......... ... .
Steering ...................... .
Ign it ion lock an d ignition sw itch .
Starting and stopping the engine
Park ing brake ................. .
Acoustic pa rking system .... ... .
77
77
78
82
85
87
87
88
89
91
92
93
94
94
95
95
98
98
103
104
105
105
106
107
108
109
Safety first ............... . .
Driving Safely . ...... ... ...... . .
General notes .. .... ....... ... . .
Prope r occupan t seating pos it ions
D river and passenger side footwe ll
Peda l a rea .. .. .... .... ... ..... .
Stow ing luggage .............. .
Report ing s afety defects ...... . .
Safety belts ................... .
General notes ................. .
Why safe ty be lts? .............. .
Safety belts ................... .
Safety belt tensioners .......... .
Airbag system ... ... ...... .... . .
Important things to know ...... .
F . b ron t air ags ........ ....... .. .
Monito ring the Advanced Airbag
System ....................... . 127
128
128
130
13
4
13 4
135
136
137
137
138
141
14 4
146
146
150
157

Cockpit
General illustration
G)
0
©
©
©
©
0
©
®
@
@
@
@
@
@
@
@
Power window switches
Door handle
Pow er lo cking switc h
Adjus te r contro l fo r ou tsid e mirro rs ...... .... ... . .
Air outlets ..... .. . ..... .... .... .. . .... .. . ..... .
Light switch .. ...... .... ... .... .... .... .... ... .
Turn signa l and high beam
Multifunc tion steering wheel with:
- Horn
- Driver's a irbag .... .... ... .... .... .... .... ... .
- Shift b uttons ... .. .... ... .... .... .... .... ... .
Instr um en t cluster . ...... ... .... .. ...... .. .. ... .
Switches for
- Windshield wipe r/wash er ... .... .. ....... .. ... .
- Menu d isplay ...... ... .. .. .... .... .... ... ... .
- Trip computer ..... .. .... .... ...... ....... .. .
Depending on options : Radio or navigation sys tem
G love compa rtmen t (loc kab le) ... .. .. .. ... .... ... .
Front passenger 's airbag .. ...... .. . .... .. .. .... .
Rear window defogger switch .... ..... .. .... .... .
Climate controls ..... .. .... .... ..... .. ... ... .. .
Ashtray wi th cigare tte lighter ....... ............ .
Gear sh ift l ever or s elector lever (automatic transmis -
sion) 57
53
83
102
69
76
150
119
1 2
78
27
39
96
150
10 3
98
94
- Manual transm ission . . . . . . . . . . . . . . . . . . . . . . . . . 113
- S tronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
@ Switches for
- Aud i magnetic r ide
Controls and equip ­
ment
112
Co ckpit
- Electronic Stabilization Program (ESP) . .... .. ... .
- Emerge ncy flasher ... .. .. .. .... .... .... .. . ... .
- Retractab le r ear spoiler .... ...... .... .... .... . .
- Tire pressure mon itor ing system ..... .... .. . ... .
@ Sw itc h f or wind deflector .... .. ..... .. .... ... ... .
@) Switch for automatic folding top ..... .. .... ... ... .
@ Cup hold er ....... .. .. .. .... .... ....... ....... .
@ Parking brak e le ver ... .... ..... .. .... .... ..... . .
@ S teeri ng lock/igniti on/sta rter sw itch (in t he s teer ing
whee l column) ... .... ... ... ... .. .... .... ...... .
@ Adjus tab le steering co lu m n .. ...... ..... ... ... .. .
@ Cruise contro l .... ... .... .... .... .... .... ... ... .
@ Hood release ... .. .. .. ..... .. .... .... .... ...... .
@ Data Link Connect or (DLC) for On Boa rd Diag nostics
(OBD Ill .... ... .. ...... .... ... .... ... .. ... .... .
@ Daytim e running l ights (DRU* .... .... .... .... ... .
@ Instrumen t lighting ...... .... .... .... ... .... ... .
@ Switc hes f or
- Fue l filler flap release .... .. .... .... .... ... ... .
- Rea r lid r elease
[ i ] Tip s
A separate brochure is provided for your factory -insta lled audio
system and/or the Aud i Nav igation System .•
I • •
184
75
187
41
64
62
94
108
106
105
110
219
2 6
71
74
216
55

Warm and cold
Warm and cold
Climate controls
Controls
The air conditioning automatically maintains the selected
temperature in the vehicleinterior throughout each
se aso n.
Fig . 93 C limate co ntro ls
We recomme nd the following setting:
Rotate the knob=> fig. 93 @to th e right to switch on the
air conditioning.
Set t he temperature to 72 °F ( 22 °Cl.
Press th e !AUTO ]=> fig . 93 button.
Using the previously recommended setting is the quickest way to
achieve a comfortable climate in the vehicle . T his setting should
therefore on ly be changed when persona l comfort levels or certain
circumstances require it .
The climate contr ols are a combination of automatic heating and
ventilation systems and a cooling system which dehumidifies and coo ls the a ir inside the veh ic le .
The climate controls automa tically ma intain a temperature once it
has been set . T he temperature of the air from the vents, fan speed
(air volume) and air dis tribution are also automa tica lly adjusted . The
system also takes into account strong sunshine so that manual
adjustment is no t necessary. So in al most a ll cases,
automatic mode
offers the best conditions for the comfort of the occupants at all
times of the year~
page 101.
Please note :
In cooling mode, relative humidity in the interior is reduced. This
prevents the w indows from fogging up.
When relative humidity and temperatures outside are high,
conden­
sate
can drip from the air conditioning evaporator and form a poo l
of water under the vehicle . This is normal and not an indication of a
leak!
When outside temperatures are low, the fan does not switch to a
higher speed until the coolant has reached an adequate tempera­
ture, with the exception of the defrost setting .
When accelerating at wide -open throttle, the air conditioning
compressor is temporarily switched off to maintain full engine
power .
I n order to ensure eng ine cooling under extreme engine loads, the
compressor is switched off if coolant temperatures climb too high. _,,,

Functions are set by turning the rotary knob or switched on and off
by tapping the buttons. The LED in the buttons illuminates when the
function is active .
Button(sl
Rotary knob 0
Rotary knob 0 @
Rotary knob©
(- .,; +]
-
Po llutant f ilter Me
aning
Temperature selection
Switch ai r conditioning
on/o ff
Fan
Air distribution
Rear window defogger
Heated seat* driver/pas ­
senger side
Recirculation
Switch on cooling sys ­
tem
P age
~ page 100
~ page 100
~ page 701
~ page 101
~ page 103
~ page 104
~ page 102
~ page 102
The pollutant filter (particle filter) ensures that contaminants in the
outside air (such as dust or po llen) are grea tly reduced or stopped.
T he air is also filtered in recirculation mode.
The pollutant fil ter e lement must be changed according to the inter ­
vals specified in the maintenance schedu le so that the air condi­
tioning system's performance is not adversely affected.
If the fil ter's effectiveness is weakened by driving the vehicle in
areas with heavi ly polluted outside air, the filter element should also
be changed in between the listed services .
Controls and equip ­
ment
W arm and cold
& WARNING
Fo r safet y rea sons , it is imp ort ant that all window s are free of ice,
snow , and condensati on . Only then i s good vi sibility en sured.
Pl eas e familiari ze yourself with the co rrect o peration of th e air
c ond itioning and how to dehum id ify /defro st the windows.
0 Note
• I f you suspect that the climate contro ls have been damaged ,
switch the system off to avoid damaging it , and have it inspected by
an authorized Audi dealer.
• Audi climate control system repairs require specia l expertise and
the proper tools. You shou ld contact an authorized Audi dealer in
the event of malfunct ions.
[ i ] Tip s
• To avoid adversely affecting heating and cooling performance
and to prevent condensation on the windows, the air intake in front
of the windsh ield must be free of ice, snow, and leaves.
• The air coming from the vents and circu lating through the en tire
interior is extracted through the out let slots in the side panels in the
luggage compartment. Make sure that the outlet slots are not
covered by clo th ing, etc.
• Climate control works most effectively if the windows are closed .
However , if the interior o f a parked vehicle is extremely hot from the
sun's rays, briefly opening the windows can speed up the cooling
process. •
I • •

• ..__w_ a_ r_m _ a_ n_d_ c_ o_ ld __________________________________________________ _
Setting temperature
Fig . 94 Rota ry k nob fo r
t e mp era tu re set ting
-Turn the rota ry knob ::::, fig . 94 to the desi red temperature
setting.
To set a lower temperature, turn the rotary knob to the left . To set a
high er temperature, turn the rotary knob to the right . Ther e ar e addi ­
tional intermedia te set tings available to adjust the temperature as
needed .a
Switching climate control on and off
Fi g. 95 Rota ry kn ob to
sw itch air cond itio nin g
on and o ff a nd to reg u­
l a te fan sp ee d
Swit ching th e climat e control system on and off
Turn the knob::::, fig . 95 to the right to switch climate
control on. The LED next to the word OFF goes out.
T u rn the knob::::, fig . 95 to the left to switch the climate
cont rol system off . The LED next to the word OFF comes
on .
Setting fan speed
~
T ur n th e knob::::, fig. 95 to the setting you want t o adjust
fan speed (air quant ity) .
In automatic mode the cl imate control system automatically regu ­
lates fan speed depending on interior temperature. You can adjust
the volume of air produced by the fan to meet your own require ­
men ts .
[ i ] Tips
If the diffe rence between the desired temperature set by you and
the vehicle's interior temperature is too great, the fan speed will
change automatically. This is done so that the desired temperature
setting is reach ed as quickly as possible .•

___________________________________________________ W_ a_ r_m _ a_ n_d_ c_ o_ ld _ __.11111
- To adjust the direction o f the airflow from the o utlet,
move the tab in the cen ter of the o utlet in the desired
direction . The direction of the air delivered from the
vents can be adjusted hor izontally and vertically .
G) Air flows to the windshield and the driver and front passenger
side windows
@ Air flows to the driver/fron t passeng er or to the driver and front
passenger side windows
© Air flows to the driver/front passenger
© Air flows to the footwe ll
Using the rotary knob, you can adjust air distribution=>
page 101 so
that air flows from specific vents=>
page 102, fig. 97.
Heated or unheated fresh air, or cooled air flows from the vents.
[ i ] Tip s
If climate control is running in cooling mode, air should flow mainly
from vents @ and
G). To achieve adequate coo ling, you should
never c lose the outlets completely .•
Using the climate controls economically
Economical use of the climate controls helps to save fuel.
When climate co ntrol is w orking in c ooling mode, engine
performa nce is reduced and fuel consum ption is affected .
To keep the t ime the air cond itioning is on as s hort as
poss ible, you s hould do the following :
- If yo u would like to save fue l, sw itch the air con ditioning
off .
- If you open t he windows while driving, switch the air
conditio ning off .
Contro ls and eq uip­
ment
- If the ve hicle is extremely hot due to the heat of the sun,
br ie fl y open doors and windows .
c£> For the sake of the environment
When you save fuel, you reduce emissions from the vehicle .•
Rear window defogger [ffiJ
The rear window defogger clears the rear window of
condensation.
F ig . 9 8 Switc h for rear
w ind ow defo gg er
- Press the [ml button to turn t he rear window defogger on
and off.
The rear window defogger works only when the engine is running .
The indicator light in the button illuminates when the rear window
defogger is turned on .
The rear window defogger is switched off automatica lly after 10 to
20 m inutes, depending on the outside temperature .
At very low outside temperatures, the rear window defogger can be switched on continuously by pushing the
Qii) button for more than 2
seconds. This remains stored until the ignition is switched off . A ..,
Vehicle care I I Technical data

___ 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

___ A_l.:,. p _h_ a_ b_e _t _i c_ a_l _i n_ d_e _x ____________________________________________ _
Convertible locking retractor . . . . . . . 177
Important safety instructions for using child safety seats .. ..... .. .. .... 171
Important things to know when driving with chi ldren . .... .... ... .... ... 168
Infant seats .. ........ ....... .... 173
Older children and safety belts ..... 177
Safety belts and older children . . . . . 177
Which restraint system should my older child wear? .. .... .... ... ... .... 177
Child safety seat .... .... ... .. ...... . 173
Convertible locking retractor . . . . . . . 177
Installing ..... ............ ...... 177
Ch ild safety seats
How do I properly install a chi ld safety
seat in my vehicle? .. ... .... . .. .. 171
Safety instructions . . . . . . . . . . . . . . . 171
Cigarette lighter ... ..... ... ....... ... 95
Cleaning Alcantara (synthetic suede) . . . . . . . . 211
E ngine compartment ... .. .... .... 212
Fabrics and fabric coverings . ...... 208
Instrument panel ... .. .... ... .... 209
Interior ...... .... .... .... .... ... 208
Leather . . . . . . . . . . . . . . . . . . . . . . . . . 210
P lastic and viny l .. .... ....... .... 204
Plastic parts ..................... 209
Safety belts . . . . . . . . . . . . . . . . . . . . . 212
Trim strips .................. 204, 205
Cleaning and protection ... .. .... .... 200
Climate control A/C operation . . . . . . . . . . . . . . . . . . . . 102
Air distribution . . . . . . . . . . . . . . . . . . 101
Air ven ts . . . . . . . . . . . . . . . . . . . . . . . . 1 02 Automatic mode .
. . . . . . . . . . . . . . . . 101
Defrost . . . . . . . . . . . . . . . . . . . . . . . . . 101
Economical use .................. 103
Fan ... .... ....... .... .... .... .. 100
Heated seats . . . . . . . . . . . . . . . . . . . . 104
Rear window defogger . . . . . . . . . . . . 103
Switching on and off ..... ... .. ... 100
Climate controls ... .. .... ..... .. ... .. 98
Air recirculation mode .. .... ...... 102
Controls ......................... 98
Dust filter ..... ............... .... 98
Heating ........ ... .... .... .... ... 98
Pollen fi lter .. ...... .... .... .... ... 98
Venti lation .... .... .... .... .... ... 98
Clock ... ... .. .... ..... .. ... ... .... .. 13
Co ld tire inflation pressure . ...... .... 242
Coming -home -function ............... 73
Compass mirror ..... .... ... ... .. .... 85
Consumer In formation .... .... ... 136, 293
Contacting NHTSA . . . . . . . . . . . . . . . . . . 136
Con trols and displays . . . . . . . . . . . . . . . . 11
Conve nience close/open feature
P o wer top . . . . . . . . . . . . . . . . . . . . . . . . 63
Windows ... .. .... .... .... .... ... 58
Convertible chi ld seats
How do I proper ly install a convertib le
chi ld seat in my vehic le? ... .... .. 174
Safety instructions ............... 174
Convertible locking retractor Activating ... .. ..... .. .... .... ... 1 79
Deactivati ng . . . . . . . . . . . . . . . . . . . . . 180
Using to secure a chi ld safety seat . . 177,
179 Coolant System
Expansion tank 228
Coolant system ...... .... .... .... ... 227
Cornering light .... ....... ....... .... 72
Cruise contro l ...................... 110
Changing speed ................. 111
Presetting your speed ............. 111
Switching off . .... ..... ... .... ... 111
Switching on .. .... .... ..... .. ... 110
Warning/indicator l ights ........... . 19
Cruising range ..... ... .... .... ...... . 39
Cup holder . ...... .... .... ... .... .... 94
D
Damp ing
See Audi magnet ic ride ..... .... ... 112
Data .......... ... ....... .... ...... 291
Data recorder . ........ ... .. .... .... 184
Date display .. .... .... ............... 13
Daytime running lights ......... ...... 71
Daytime running lights (Canada) ...... . 71
Declaration of conformity ............. 45
def What does this mean when it appears in the trip odometer disp lay? .. ...... 14
Defrosting the windows ............. . 101
De termining correct load li mit ... .. ... 247
Digital clock . .... .... ..... .. ..... .... 13
Setting the time ................... 13
Digital compass ... ....... .... ...... . 85
Digital speedometer ...... .... .... .... 2 4