AUDI TT ROADSTER 2008 Owners Manual

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& WARNING
• Using force without control to speed the wheel change up can
cause the vehicle to slip off the jack and cause serious personal
injuries.
• Do not loosen the wheel bolts more than one turn before you
raise the vehicle with the jack . - Risk of injury!
[ i] Tips
• Never try and use the hexagonal socket in the handle of the
screwdriver to loosen or tighten the wheel bolts.
• If a wheel bolt sits very tight, you may find it easier to loosen by
carefully pushing down on the end of the wheel bolt wrench with
one foot only . As you do, hold on to the car to keep yourself stable
and take care not to slip. •
Rais ing the vehicle
The vehicle must be lifted with the jack first before the
wheel can be removed.
-
Fig. 174 Wheel
change: mounting
points for the lifting
jack Fig
. 175 Close-up:
proper positioning of
lifting jack
-Find the mounting point on the rocker panel which is
closest to the flat tire ~ fig. 174 -arrows-.
- Crank the jack up until it can be positioned under the lift
point on the vehicle.
- Align the jack so the claw~ fig. 175@ grips the
mounting point on the rocker panel and the flexible base
plate @ is flat on the ground.
- Continue to crank the jack until the wheel is lifted just
clear of the ground.
Recesses at the front and rear of the underbody rib mark the proper
mounting locations for the jack=> fig. 174 . There is
only one desig­
nated jack mounting point for each wheel.
Do not apply the jack
anywhere else=>&.
The jack should be positioned approximately 6 in. (15 cm) behind
the front wheel or 10 in. (25 cm) in front of the rear wheel.
An
unstable surface under the jack can cause the vehicle to slip off
the jack. Always provide a firm base for the jack on the ground. If
necessary place a sturdy board or similar support under the jack. On
hard, slippery surfaces (such as tiles) use a rubber mat or similar to
prevent the jack from slipping=> &. .,
Vehicle care Do-it-yourself service irechnical data

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& WARNING
• You or your passengers could be injured while changing a
wheel if you do not follow safety precautions:
-Mounting the jack under the vehicle at any other place than
indicated above may damage the vehicle or may result in
personal injuries.
- A soft or unstable surface under the jack may cause the
vehicle to slip off the jack. Always provide a firm base for the
jack on the ground.
If necessary, use a sturdy board under the
jack.
- On hard, slippery surface (such as tiles) use a rubber mat or
similar to prevent the jack from slipping.
• To help prevent injury to yourself and your passengers: -Do not raise the vehicle until you are sure the jack is securely
engaged.
- Passengers must not remain in the vehicle when it is jacked
up.
- Make sure that passengers wait in a safe place away from
the vehicle and well away from the roadway and traffic.
- Make sure jack position is correct, adjust as necessary and
then continue to raise the jack.
0 Note
A floor jack or the pads on the hoist arms must not be positioned at
the points shown~
page 269, fig . 174 -arrows -. •
Taking the wheel off
Follow these instructions step-by-step for changing the
wheel.
Fig . 176 Wheel
change : using the
screwdriver handle
(with the blade
removed) to turn the
bolts
Fig. 177 Wheel
change : alignment pin
inside the top hole
After you have loosened all wheel bolts and raised the
vehicle off the ground, perform the following steps to
remove and replace the wheel:
Removing the wheel Use the hexagonal socket in the screwdriver handle to
completely turn out the topmost wheel bolt and set it
as ide on a
clean surface => fig. 176. ~

What do I do now? -
----------------
•
-Screw the threaded end of the alignment pin from the
tool kit hand-tight into the now vacant bolt hole
=:> page 270, fig. 177.
- Then completely unscrew the other wheel bolts as
described above.
- Take off the wheel leaving the alignment pin in the bolt
hole.
Putting on the wheel
- Lift the spare wheel and carefully slide it over the align­
ment pin to guide it in place.
- Use the hexagonal socket in the screwdriver handle to
screw in and tighten all wheel bolts slightly.
- Unscrew the alignment pin and insert and tighten the
remaining wheel bolt slightly like the rest.
- Turn the jack handle counter -clockwise to lower the
vehicle until the jack is fully released.
- Use the wheel bolt wrench to tighten all wheel bolts
firmly =:> page 268. Tighten them crosswise, from one
bolt to the (approximately) opposite one, to keep the
wheel centered.
[ i J Tips
Never use the hexagonal socket in the handle of the screwdriver to
loosen or tighten the wheel bolts.
• Pull the reversible blade from the screwdriver before you use the
hexagonal socket in the handle to turn the wheel bolts.
• When mounting tires with
unidirectional tread design make sure
the tread pattern is pointed the right way~
page 272.
• The wheel bolts should be clean and easy to turn. Check for dirt
and corrosion on the mating surfaces of both the wheel and the
hub . Remove all dirt from these surfaces before remounting the
wheel. •
Notes on wheel change
Please read the information~ page 249, "New tires and replacing
tires and wheels", if you are going to use a spare tire which is
different from the tires on your vehicle.
After you change a tire:
• Check the tire pressure on the spare immediately after
mounting.
• Have the wheel bolt tightening torque checked with a torque
wrench as soon as possible by your authorized Audi dealer or a qualified service station .
• With steel and alloy wheel rims, the wheel bolts are correctly
tightened at a torque of 90 ft lb (120 Nml.
• If you notice while changing a tire that the wheel bolts are
corroded and difficult to turn, then they should be replaced before
you check the tightening torque.
• Replace the flat tire with a new one and have it installed on your
vehicle as soon as possible. Remount the wheel cover.
Until then, drive with extra care and at reduced speeds.
& WARNING
• If you are going to equip your vehicle with tires or rims which
differ from those which were factory installed, then be sure to read
the information
~ page 249, "New tires and replacing tires and
wheels".
• Always store the tools securely in luggage compartment.
Otherwise, in an accident or sudden maneuver they could fly
forward, causing injury to passengers in the vehicle.
Do-it-yourself service

-What d o I d o now ? PU:I...__ ______________ _
0 Note
Do not use commercially available ti re sealants . Otherwise, the elec ­
trical components of the tire pressure monitoring system * wi ll no
longer work properly and the sensor for the tire pressure moni­
toring system will have to be replaced by a qua lified workshop. •
Tires with unidirectional tread design
Tires with unidirec tional tread design must be mounted
with their tread pattern pointed the right direction.
A unidirectional tire can be identified by arrows on th e sidewall ,
which point in the direction of the rotation . You must fol low the
specified direction of rotation. This is necessary in order for these
tires to deve lop their optimum characteristics regarding grip, road
noise, wear, and hydroplaning. •

Fuses and bul bs -
------------------
Fuses and bulbs
Fuses
Replacing a fuse
A problem in the electrical system may be caused by a
blown fuse.
Fig . 178 End face o f
i n str ume nt pan el:
re m ov ing cover pla te
t o access f uses
Fig . 179 Left si de o f
engine co mpartm ent:
fu se cover
Fus e cove r on the left end face of the instrum ent
panel
- Switch off the ignition and the e lectr ica l component
affected . - Carefully pry the fuse cover off the instrument panel
using the ignition key or a screwdriver=> fig. 178.
- C heck the fuse listing on the next pages to find out w hich
fuse belongs to the component which has failed => page 274, "F use Location, Instrument Pane l le ft".
- Remove the blown fuse with the plastic clip provided .
The clip is located on the holder in the fuse box .
Replace a blown fuse (recognizable by the melted metal
str ip inside) with a fuse of the same amperage.
- Firmly snap the cover back onto the instrument panel
face.
Fuse cov er in engin e compartment
- Switch the ignition a nd the affec ted co nsumer off .
- Unlatch the fuse cover, push the two s lides forward
=> fig . 179.
- Find out which fuse belongs to the equipment which
stopped working=> page 276, "Fuse location, left side of
engine compartment".
- Remove the plastic from its retainer in the fuse box cover (left face end of the instrument pane l), place it on the
fuse in question and pull it out.
- If the fuse is burned out (recognizable by melted strips of metal), replace it with a new fuse of the same rating.
- Replace the fuse cover.
- Push the two slides to the rear=> fig. 179 . Install the fuse
cover carefully to prevent water from entering. .,
Vehicle care Do-it-yourself service irechnical data

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The various electrical circuits are protected by fuses . The fuses are
clustered in a central ized unit. The unit is located behind the face
panel at the end of the instrument panel.
Two spare fuses and a sticker identifying the fuses are located on
the inside of the fuse box cover.
You are wel l advised to keep a supply of spare fuses in your vehicle .
Fuses with the proper ampere ratings are availab le at your autho­
rized Audi dealer .
& WARNING
Never replace a fuse with one that has a higher amperage rating .
• A fuse with a too high amperage could damage the electrical
part and cause a fire.
0 Note
• On no account should fuses be repaired (e.g. patched up with tin
foil or wire) as this may cause serious damage elsewhere in the elec­
trical circuit or cause fire.
• If a fuse blows repeatedly, do not keep replacing it. Instead, have
the cause for the repeated short circuit or overload tracked and
fixed. •
Fuse Location , Instrument Panel left
Fig. 180 Fuse carrier
behind the instrument
panel end face, cover
removed
Some of the equipment items listed are optional or only available on
certain model configurations .
Note that the following table is accurate at the time of going to
press and is subject to change. In the event of discrepancies , the
label on the inside of the cover always takes precedence.
The power seats are protected by circuit breakers , which automati­
ca lly reset after a few seconds after the overload has been reme-
died. _,.

Fuses and bulbs -
----------------
Equipment No. Equipment
Amps
Engine relay, fuel tank control unit, Airbag Off
16 A/C system (control unit) 10
1
light, light switch (switch illumination), diagnos-10
tic connector
17 Tire pressure monitoring system (control unit) 5
18
Not used
ABS, ASR, ESP, brake light switch
5 19
Not used
3 AFS headlight (left) 5
Not used
Oil level sensor (extended maintenance interval)
(WIV), tire pressure monitoring system, switch
21 Fuel injectors (gasoline engine) 10
4 for Electronic Stability Program (ESP), AFS head-5 Wind deflector (Roadster) 30
lights (control unit), A/C system (pressure sen -23 Horn 20 sorl, backup light switch
Automatic headlight range control, AFS head-
24 Transmission (control unit) 15
5
light (right)/ manual headlight range control, 5/10
25 Heater rear window Coupe/heated rear window 30/20
halogen headlights Roadster
Control unit for CAN data transfer (gateway),
26 Driver's side power window 30
6 electromechanical steering, automatic transmis-5
27 Passenger's side power window 30
sion shift gate
28 Not used
Acoustic Park Assist, automatic dipping interior
rear view mirror, garage door opener, heatable
29 Washer pump 15
7
windshield washer nozzles, washer pump, wind 5
30 Cigarette lighter 20
deflector relay (Roadster)
31 Starter 40
8
Haldex clutch 5 32 Steering column module 5
9
Control unit Audi magnetic ride 5 33
Instrument cluster 5
Airbag control unit 5 34 Radio navigation system, radio 15
1 1 Mass airflow sensor, crankcase heating 5/10
35
Audio amplifier 30
12 Door control unit (central locking driver/passen-10
36 Engine (control unit) 10 ger)
13 Diagnostic connector 10 37 CAN (Gateway) 5
Rain sensor, automatic transmission shift gate 5 38 Not used
15 Roof
light (interior lighting) 5 39 Not used
• Do-it
-yourself service

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No. Equ ipm ent
40 Not used
41 Not used
42 Not used
43 Not used
44 Not used
45 Not used
46 Not used Amps
47 SDARS tuner, cell phone package, TV tuner
5
48 VDA interface 5
49 Not used
Fuse location , left side of engine
compartment
Fig . 18 1 Ill ustra tio n of
fu se h old er o n l eft s ide
of e ngine co mpart­
m en t: fu se s (w ithout
fu se cov er)
Some of the equipment items listed are optional or only ava ilable on
certain model configurations .
Note th at th e fo llowi ng t able is acc urate at the t ime o f go ing to
pre ss a nd is subj ect to change. In the eve nt o f discre pancie s, the
l a bel on the ins ide of the cover a lways ta k es pre cede nce .
•
No . Equipm ent
Fu se hold er (bl ack)
1 Not used
2 Not used
3 Not used
___ ,
4 Not used
5
6
7
8
Anti-theft warning system (sensor), anti -theft
warning system (horn)
Headlamp washer system
Electric fuel pumps (supplyl/volume control
valve
Windshield w ipers
9 Heated seats (driver and passenger)
10 Lumbar support (driver and passenge r)
1 1 Not used
12 Ventilation blower
Fuse hold er (brown )
1
2
3
4
5
6
7
Fuel pump 16 -cy linder)
02 sensors (6-cylinderl
Mass airflow sensor 16 -cylinderl
02 sensors (6-cylinder) Relay coil relay volume con trol valve 14-cylin­
de r)
Secondary air pump valve 16-cylinder), 02 sen­
sors 14 -cylinde r)
Positioning valves pre-wired engine harness Amps
5
30
15/10
30
25
10
40 15
10
5
10
5
10
10

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•
No. II Equipment Amps
8
Ignition coils (4 -cylinder)/ignition coils (6 -cylin -20/30 der)
-
9 Engine (control unit) 25
Water pump delayed-off 10
11 Feed (clutch pedal, brake pedal) 5
12
Activated charcoal filter/charge pressure con-10 trol valve (4-cylinder)
--
Bulbs
Replacing light bulbs
For your safety, we recommend that you have your autho­
rized Audi dealer replace burned out bulbs for you.
It is becoming increasingly more and more difficult to replace
vehicle light bulbs since in many cases, other parts of the car must
first be removed before you are able to get to the bulb. This applies
especially to the light bulbs in the front of your car which you can
only reach through the engin e compartment .
Sheet metal and bulb holders can have sharp edges that can cause
serious cuts, and parts must be correctly taken apart and then prop­
erly put back together to help prevent breakage of parts and long
term damage from wa ter that can enter housings that have not
been properly resealed.
For your safety , we recommend that you have your authorized Audi
dealer replace any bulbs for you, since your dealer has the proper
tools, the correct bulbs and the expertise.
Gas discharge lamps (Xenon lights)*:
•
Due to the high electrical voltage, have the bulbs replaced by a qual­
ified technician. Headlights with Xenon light can be identified by the
high voltage sticker.
& WARNING
Contact with high-voltage components of the electrical system
and improper replacement of gas discharge (Xenon) headlight
bulbs can cause serious personal injury and death.
• Xenon bulbs are pressurized and can explode when being
changed.
• Changing Xenon lamps requires the special training, instruc­
tions and equipment .
• Only an authorized Audi dealer or other qualified workshop
should change the bulbs in gas discharge lamps.
& WARNING
There are parts with sharp edges on the openings and on the bulb holders that can cause serious cuts.
• If you are uncertain about what to do, have the work performed
by an authorized Audi dealer or other qualified workshop. Serious
personal injury may result from improperly performed work.
[ i] Tips
• If you must replace the light bulbs yourself, always remember
that the engine compar tment of any vehicle is a hazardous area to
work in. Always read and heed all WARNINGS =>
page 212, "Engine
compartment"=> &.
• It is best to ask your authorized Audi dealer whenever you need
to change a bulb. •
Do-it-yourself service

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Emergency situations
General
This chapter is intended for trained emergen cy crew s and working
personnel who have the necessary tools and equ ipment to perform
the se operations. •
Starting by pushing or towing
0 Note
Vehicles with an automatic tran smission cannot be started by
pushing or towing . •
Starting with jumper cables
If n ecess ary, the e ngin e c an b e starte d by conne ctin g it to
the ba ttery of anoth er vehicle .
If the engine shou ld fai l to start because of a discharged or weak
ba tte ry, the bat te ry can be connected t o the ba ttery of
another
vehic le, using a pair of jumper cables to start the engine.
Jumper cables
Use
only jumper cables of suffic iently large cross section to safely
c a rr y th e st arter cu rre nt. Re fer to th e m an ufacture r's spec ific a tio ns.
Use on ly jump er cables wh ic h have
insulated termina l c lamps and
a re prope rly marked for distinction :
plus (+l cable in mo st cas es c olo red red
minus (-l cable in most cases co lored black .
& WARNING
Batteries contain electricity , acid , and gas . Any of these can cause
very serious or fatal injury. Follow the instructions below for safe
handling of your vehicle 's battery .
• Always shield your eyes and avoid leaning over the battery
whenever possible .
• A discharged battery can already freeze at temperatures just
below 32 °F (0 °Cl. Before connecting a jumper cable, the frozen
battery must be thawed completely , otherwise it could explode .
• Do not allow battery a cid to contact eyes or skin . Flush any
contacted area with water immediately.
• Improper use of a booster battery to start a vehicle may cause
an explosion.
• Vehicle batteries generate e xplosive gases . Keep sparks, flame
and lighted cigarettes away from batteries.
• Do not try to jump start any vehicle with a low ac id level in the
battery.
• The voltage of the booster battery must also have a 12-Volt
rating . The capacity (Ahl of the booster battery should not be
lower than that of the discharged battery . Use of batteries of
different voltage or substantially different "Ah " rating may cause
an e xplosion and personal injury .
• Never charge a frozen battery. Gas trapped in the ice may cause
an explosion .
• Never charge or use a battery that has been frozen . The battery
case may have be weakened.
• Use of batteries of different voltage or substantially different
capacity (Ah ) rating may cause an explosion and injury . The
capacity (Ahl of the booster battery should not be lower than that
of the discharged battery . .,_