check engine AUDI TT COUPE 2009 Owner's Guide

-~_C_ h_e _c _ k_ i_n ...:::g::;...._ a_n_d _ f_ i_ll _in -'g:::;.._ ___________________________________________ _
& WARNING
• Bra ke fluid i s poiso nou s. It must be stor ed only in the clo se d
original container out of the rea ch of children!
• Bra ke failure can re sult from old or inappropri ate br ake fluid .
Ob serve the se pre cauti ons:
- Use o nly br ake fluid th at m eets S AE spe cific ation
J 1703 and
co nform s to Fed era l Mo tor Vehic le Standard 11 6. Alway s check
w ith your authori zed Aud i de aler to mak e sure y ou are usi ng
the correc t brake fluid. The corre ct type of brake flu id i s also
indica ted on the br ake fl uid re se rvoi r.
- The brake fluid mu st be new . Heavy u se of the brake s can
ca use a vapor lock if th e bra ke fluid is left in the system too
long. Thi s can seriou sly affect the effic iency of the brake s as
w ell as y our safet y. T his c ould re s u lt in an a ccident .
0 Note
Brake fluid wil l damage the paint of your vehicle .
~ For the sake of the environment
Because of the problem of proper disposal of brake fluid as well as
the special tools required and the necessary expertise, we recom ­
mend that you have the brake fluid changed by your authorized Audi
dea ler. •
Battery
General information
Your vehicle is equipped with a specia l battery, an AGM battery. This
ba ttery is loca ted in the luggage compar tment and must be
replaced with an original equipment battery. Under normal oper­
ating conditions, the battery is
ma inten anc e-free .
Have the battery checked when you take your vehicle in for service .
You a re well advised to replace a battery that is o lder than 5 years .
Disconn ecting th e batt ery te rmin als
Some vehicle functions (power w indow regulators, for example) are
lost if the battery terminals are disconnected. These functions have
to be relearned after the battery terminals are connected again. To prevent this, the battery should only be disconnected from the
vehic le electrical sys tem when abso lutely necessary for repairs .
Vehi cles not dri ven for lo ng p eriods
If you are going to let your vehic le stand for a long time and n ot
drive it, you should remember there are e lectrica l components
whic h are still functioning and they will draw energy from the
battery and drain it, for example, the engine immobilizer. To prevent
t his, you can eithe r charge the batte ry occasionally to keep it in
good working condition or you can disconnect the negative cable
on the battery.
W int er op erati on
During the winter months, batte ry capacity tends to decrease as
temperatures drop . This is because more power is also consumed
whi le starting, and the headlights, rear window defogger, etc ., are
used more often.
Avoid unnecessary power consumption, particularly in city traffic or
when trave ling o nly short distances . Let your authorized Audi dealer
check the capacity of the vehicle battery before winter sets in
~ page 232. A we ll charged battery will not only preven t starting
problems when the weather is cold, but will also last longer.
Repla cing batter y
The new battery must hav e the same capacity, voltage ( 12 volts),
amperage, construction and p lug sea ling, as the orig inal battery .
Specifications are listed on the battery housing. Batteries specia lly
developed by Aud i fulfill the main tenance, output, and safe ty
requirements. ...,

Checking and filling -
---------------------=----"=---------
& WARNING ! continued )
• Make sure th e vent hose is always attached to the op ening on
t he side of the battery .
• Never u se batteries which are damaged . Danger of e xplo sion !
Al way s r epla ce a damaged battery .
& WARNING
Californi a Proposition 65 Warning :
• Batt ery po sts, terminal s and related a ccess orie s contain lead
and lead compound s, chemic als kno wn to the St ate of Cal if o rni a
to cau se c ancer and reproductiv e prob lem s. Wash hand s aft er
ha ndl ing .
0 Note
• Do not disconnect the vehicle battery when the ignition is
switched on or when the engine is running, otherwise, you wi ll
damage electronic components in the electrical system .
• If your vehicle is going to stand for a long period of time without
being driven, protect the battery from "freezing", otherwise it wil l
be damaged and will then have to be rep laced. •
Checking the battery acid level on magic eye
batteries*
The battery acid level in the battery can be checked
through the clear inspection window.
_.
Fig . 14 5 Lugg age
co mpa rtmen t: B att ery
w ith m agic eye .
On top of the battery, there is a round "window". This
window (magic eye) c hanges color as the batte ry charge
and acid leve l change .
Read and heed a ll WARNINGS~
& in "Work ing on the
battery" on
page 229
Read the ac id level f rom t he window on the battery
~ fig. 145 .
Air bubbles in the window can cause an inaccurate reading. Care ­
fully tap on the side of the window.
• I f the window is
green , the battery acid level is correct .
• If t he window has
no color or is bright yellow , the battery acid
level is too low. Have the battery tested by your authorized Audi
dea ler or a qual ified workshop .
• If the window is
bla ck , then the battery is insufficiently charged.
Recharge the battery as soon as possible =>
page 232 . ~
Vehic le care I I irechnical data

-Checking
and filling
---=---------------
0 Note
Do not overfill the battery, otherwise battery acid will overflow
through the vent opening. This can damage the paint and cause
corrosion. •
Checking the battery acid level on
conventional batteries *
The acid level of a conventional battery can be checked
visually.
"' ,...
9
i
Fig . 146 Battery: Elec­
trolyte level
- Check the electrolyte level on the front of the battery. The
level should be between the "MIN" and "MAX" mark ings.
If the electrolyte level is below the "MIN" level, have an authorized
workshop fill the battery cell with
distilled water .•
Charging of battery
Starting the engine requires a well charged battery.
Always read and heed all WARNINGS below ~ & and
~ & in "Working on the battery" on page 229.
- Switch off the ignition and all electrical consumers. - Make sure the area is well ventilated when you charge
the battery.
- Connect charger cables.
ALWAYS connect charger cables
POSITIVE
G) to POSITIVE G) ; NEGATIVE Q to NEGATIVE
Q.
- Switch on the charger.
- Make sure the charging rate is not over 6 amps.
- Turn off the charger~&, .
- Disconnect the charger cables.
- Connect both battery cables to the battery if necessary -
first plus, then minus.
It is not ne cessary to remov e th e battery from th e luggage compart ­
ment, and it is also not necessary to disconnect the cables.
Normally, a battery should be charged at no more than 10 percent
of its ra ted capacity.
For example, a charging current of 4.5 amps would be used on a
battery rated at 45 Ah . Rated capac ity of the battery in your vehicle
is listed on the battery housing.
The ba ttery caps should
not be opened when cha rging a battery.
& WARNING
Charging a battery can be dangerous.
• Never charge a frozen battery. It may explode because of gas
trapped in the ice. Allow a frozen battery to thaw out first.
• Do not reuse batteries which were frozen. The battery housing
may have cracked and weakened when the battery froze.
• Charge the battery in a well ventilated area. Keep away from
open flame or electrical spark. Do not smoke. Hydrogen gas gener-
ated by the battery is explosive. ..,

Checking and filling -
------------- --------=----" =---------
& WARNING !continued )
• To reduce the danger of explosio n, never connect or di sconnect
c h arger cable s whi le the charger i s operating .
• Fast charging a battery i s dang erou s and should only be
atte mpt ed by a competent techni cian with the proper equipment .
• Battery acid that may spill during charging should be washed
off with a solut ion of w arm wat er and bak ing soda to ne utrali ze
the acid .
0 Note
Never use a fast charger as a boos ter to start the engine . This wil l
seriously damage sensitive electronic components, such as control
units, re lays, radio, etc ., as well as the battery charger .
[ i ] Tips
The vehicle battery must not be charged with a standard small
charger that plugs into the cigarette lighter or out let .•
Windshield /headlight washer
conta iner
Fi g. 14 7 Fend er, left:
Wind shi eld washer
flui d re ser voir
T h e w asher fluid container is mark ed wit h the symbol O on
its cap.
Before you c heck anything in the e ngine compartment,
always read and heed all WARNINGS~ & in "Workin g
in t he engi ne compartment" on
page 217.
Lift the fi ller cap to ngue to add washe r fluid . You can fill
t h e container to the top.
Press the cap bac k on to the fi ller neck after fi lling the
container .
You can find the reservoir ca pac ity in the tab le in => page 291.
To prevent lime residue fr om bui lding up on the spray jets, use
dis tilled water when refilling . Always add a g lass cleaner solut ion
(with frost pro tection in the winter).
0 Note
Do not mix eng ine coolant antifreeze or any other additives to fil l up
the windshield washer reservo ir. •
Vehic le care I I Technical data

-~_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
• Transmitters with the same frequency , such as radio head­
phones in the vehic le or radio equipment, can cause a temporary
disruption of the system through excessive electromagnetic fields .
• Elimina te the interference if possible/if you can and then
proceed as follows : Turn off the engine for 20 minutes . T hen drive
another
1 0 min. If the warning light comes on aga in, you should
contact your authorized Audi dealer immediately to have the problem corrected .
• Do not use commercially avai lable tire sea lants. Otherwise, the
e lectrical componen ts of the tire pressure monitoring system* wil l
no longer work properly and the sensor for the tire pressure moni­
toring system * will have to be replaced by a qualified workshop .•
Run-flat tires
Ap plies to ve hic les : w it h R un -f la t tires
Introduction
Run-flat tires help keep you moving if a tire goes flat.
Re inforced sidewalls give the tires run -flat capability if t ire pressure
is lost .
We recommend that run -flat tires only be mounted on vehicles that
were origina lly equipped with these special tires at the factory and
have a Tire Pressure Monitoring System.
Run-flat tire s can be identified by the letter s "RSC" on the tire side ­
wa ll.
If you do change the tires on you r vehicle from normal to run -flat
tires , you must buy the special rims required for run -flat tires, and
the Tire Pressure Mon itoring System must be reprogrammed by an
authorized Audi dea ler or other qual ified workshop.
What do run -fl at tires do ?
These specia l tires have run-flat capabilities that help keep you
moving if a tire loses pressure and goes flat. Under favorab le condi -tions tires can be driven
a
t lea st 30 mile s (50 km ), but you must not
drive
fa ster than 50 mph (80 km/h )=> page 259, "Driving with run ­
flat tires".
The Tire Pressure Monitoring System constant ly checks the air pres ­
sure in the tires. If the run-flat system is active (shown in the center
display), you must inspect the affected t ire or t ires and then decide
whether to cont inue dr iving. Be sure to fol low these tips
=> page 259, "Driving with run -flat tir es" .
When it is n ot po ssible to c ontinue dri ving, ev en with
run-flat tir es?
• I f the Electronic Stabi lization Program (ESP) is not work ing o r
keeps coming on.
• I f the Tire Pressure Monitoring System does not work.
• I f the tire has been severely damaged, in a crash, for example .
T he t read can separate from a damaged tire as the wheel turns , and
hit parts of the vehicle, such as the fuel tank filler neck, fuel lines or
brake lines.
• Do not con tin ue d riving if severe vibra tion occurs or if the tire
starts to smoke because the tire is running hot.
• Do not conti nue drivi ng if da mage to the tire, such as cracks in
the sidewal l, appears .
& WARNING
Improper use of run -fl at tires can cause ve hic le da mage th at can
le ad to los s of vehicle control , a crash and seriou s personal injury .
• Run-flat t ires can only be used w ith spe cial rims .
• Run -fl at tires must always be monitored with a properly
programmed Tire Pre ssure Monitoring Sy stem.
• Alway s inspect a tire that ha s lo st air to make sure it i s safe to
drive with the tire in the run -flat mode .
• Never dr ive with run -fl at tire s th at have been dam aged in a
colli sion.

llffl.,___F_ u_ s_ e_s _ a_n _ d_ b_ u_lb _ s _______________________________________________ _
Fuses and bulbs
Fuses
Replacing a fuse
A problem in the electrical system may be caused by a
blown fuse.
Fig . 168 End face of
instrument panel:
removing cover plate
to access fuses
Fig .
169 Left side of
engine compartment :
fuse cover
Fuse cover on the left end face of the instrument
panel
- Switch off the ignition and the electrical component
affected. - Carefully pry the fuse cover off the instrument panel
using the ignition key or a screwdriver~ fig. 168.
- Check the fuse listing on the next pages to find out which
fuse belongs to the component which has failed
~ page 275, "Fuse Locatio n, Instrume nt Panel left".
- 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
strip inside) w ith a fuse of the same amperage .
- Firmly snap the cover back onto the instrument panel
face.
Fuse cover in engine compartment
- Switch the ignition and the affected consumer off.
- Unlatch the fuse cover, push the two slides forward
~ fig. 169.
- Find out which fuse belongs to the equipment which
stopped working~ page 277, "Fuse location, left side of
engine compartment".
- Remove the plastic from its reta iner in the fuse box cover
(left face end of the instrument panel), 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. 169. Install the fuse
cover carefully to prevent water from entering.
~

IIII...__E_ m _ e _r.;:g '-e_ n_ c-=y _ s_ i_t _u _a _t_ i_o _n_ s _______________________________________________ _
& WARNING (continued)
• Before you check anything in the engine compartment, always
read and heed all WARNINGS=>
page 209, "Engine compartment".
0 Note
• Applying a highe r voltage booste r battery will cause expensive
damage to sens itiv e electron ic components, such as control units,
relays , radio, etc.
• There must be no electrical contact between the vehicles as
otherwise current could already start to flow as soon as the positive
( + ) terminals are connected .
[ i ] Tips
The d ischarged battery must b e properly connected to the vehicle's
electrical system. •
Use of jumper cables
Make sure to connect the jumper cable clamps in exactly
the order described below!
Fig. 172 For jump
starting or charging
the battery, there is a
jump start connection
on the left side of the
engine compartment . Fig
. 173 Jump start
using the battery in
another vehicle: A -
Discharge, B- Female
socket
The procedure described below for connecting jumper
cables is intended to provide a jump start for your vehicle.
Preparatory measures
1. Do not jump start a frozen battery! Replace such a
battery!
2. Otherwise apply the hand brake and sh ift into idle gear if
your vehicle has manual transmission, and put the selector lever into P posit ion if your vehicle has auto ­
matic transmission.
3. For both vehicles switch off all consumers and the igni­
tion.
Connecting/disconnecting the jumper cable.
4. Connect one end of the red jumper cable on the jump
start bolt G) => fig. 173 (Bolts under red cover= "posi­
tive") of the vehicle to be started
@.
5. Connect the other end of the red jumper cable to the
positive terminal @ of the booster battery @.
6. Connect one end of the black jumper cable to the nega -
tive terminal @ of the booster battery @. _,,,

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•
7. Connect the other end of the black jumper cable to the
negative terminal (bolt head)
G) in the external starting
point @of your vehicle.
8. Route the jumper cables so that they cannot catch in any
rotating parts in the engine compartment.
Starting the engine
9. Start the engine of the vehicle providing assistance and
allow it to run at idle.
10. Now start the engine of the vehicle with the discharged
battery , wait for two to three minutes until the engine
"runs" smoothly.
11. If the engine does not start: Stop trying after 10 seconds
and then try again after about 30 seconds.
12. In the vehicle that has received start assistance, turn on
the heater blower and the rear window heating to elimi­
nate any voltage peaks when disconnecting. Driving
lights must be switched off!
13. Disconnect the cable while the engine is running exactly
in
reverse order to that described in=> page 280,
"Connecting/disconnecting the jumper cable.". When
doing so, make sure that the cable cannot contact
rotating engine parts.
14. Close the cover on the posit ive terminal.
The battery is vented to the outside to prevent gases from entering
the vehicle interior. Make sure that the jumper clamps are well
connected with their
metal parts in full contact with the battery
terminals.
& WARNING
To avoid serious personal injury and damage to the vehicle, heed
all warnings and instructions of the jumper cable manufacturer.
If
in doubt, call for road service .
• Jumper cables must be long enough so that the vehicles do not
touch.
• When connecting jumper cables, make sure that they cannot
get caught in any moving parts in the engine compartment.
• Before you check anything in the engine compartment, always
read and heed all WARNINGS=>
page 209, "Engine compartment" .
0 Note
Improper hook-up of jumper cables can ruin the generator.
• Always connect POSITIVE(+) to POSITIVE (+l, and NEGATIVE(-) to
NEGATIVE( -) ground post of the battery manager control unit.
• Check that all screw plugs on the battery cells are screwed in
firmly. If not, tighten plugs prior to connecting clamp on negative
battery terminal.
• Please note that the procedure for connecting a jumper cable as
described above applies specifically to the case of your vehicle
being jump started. When you are giving a jump start to another
vehicle , do
not connect the negative(-) cable to the negative 1-1
terminal on the discharged battery ©-Instead, securely connect
the negative (-1 cable to either a solid metal component that is
firmly bolted to the engine block or to the engine block itself . If the
battery that is being charged does not vent to the outside, escaping
battery gas could ignite and explode! •
Do-it-yourself service

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•
& WARNING
• To reduce the risk of serious injury and vehicle damage.
-Always lift the vehicle only at the special workshop hoist and
floor jack lift points illustrated=> page
284, fig. 178 and
=> page 284, fig. 179.
- Failure to lift the vehicle at these points could cause the
vehicle to tilt or fall from a lift if there is a change in vehicle
weight distribution and balance. This might happen, for
example, when heavy components such as the engine block or
transmission are removed.
• When removing heavy components like these, anchor vehicle
to hoist or add corresponding weights to maintain the center of
gravity. Otherwise, the vehicle might tilt or slip off the hoist,
causing serious personal injury.
0 Note
• Be aware of the following points before lifting the vehicle:
- The vehicle should never be lifted or jacked up from under­
neath the engine oil pan, the transmission housing, the front or
rear axle or the body side members . This could lead to serious
damage.
- To avoid damage to the underbody or chassis frame, a rubber
pad must be inserted between the floor jack and the lift points.
- Before driving over a workshop hoist, check that the vehicle
weight does not exceed the permissible lifting capacity of the hoist .
- Before driving over a workshop hoist, ensure that there is
sufficient clearance between the hoist and low parts of the
vehicle. •
Do-it-yourself service

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reliability. For detailed vehicle maintenance consult your Warranty &
Maintenance book let.
Und er di ffi cult ope rating cond ition s, for example at extremely low
outside temperatures, in very dusty regions, etc ., some service work
should be performed between the intervals specified. This app lies
particularly to:
• oil changes, and
• cleaning or replacing the air filter.
By regularly maintaining your vehicle, you help make sure that emis­
sion standards are maintained, thus minimizing adverse effects on
the environment. •
Important considerations for you and your
vehicle
The increasing use of electronics, sophisticated fuel injection and
emission control systems, and the general ly increasing technical
complexity of today's automobi les, have steadi ly reduced the scope
of maintenance and repa irs which can be carried out by vehicle
owners.
Al so, sa fety a nd e nvironment al concerns p lace very strict
limi ts on the na ture of repairs a nd adjustments to engine and trans ­
mission parts which an owner can perform.
Maintenance, adjustments and repairs usually require special tools,
testing dev ices and other equipment ava ilable to specially trained
workshop personnel in order to assure proper performance, reli ­
abil ity and safety of the vehicle and its many systems.
Improper maintenance, adjustments and repairs can impair the
ope ration and re liability of your vehic le and even void your vehic le
warranty. Therefore, proof of servicing in accordance with the main­
tenance schedu le may be a condition for upholding a pos sible
warranty claim made within the warranty period. Above all, operational safety can be adversely affected, creating
unnecessary r isks for you and your passengers .
If in doubt about any servicing, have it done by your authorized Audi
dea ler or any other properly equipped and qualified workshop. We
strongly urge you to give your authorized Audi dealer the opportu­
nity to perform all scheduled maintenance and necessary repairs.
Your dealer has the fac ilities, origina l parts and trained spec ial ists
to keep your vehicle running proper ly.
P e rforming limited maint enance your self
The following pages describe a lim ited number of procedures which
can be performed on your vehicle wi th ordinary too ls, should the
need arise and trained personnel be unavai lab le. Before performing
any of these procedures, a lways thoroughly read all of the appli ­
cable text and carefu lly follow the instructions given. Always rigor ­
ously observe the
WARNINGS provide d.
Before you che ck anything in th e eng ine compartment , always read
and heed all WARNINGS~
& and~ & in "Working in the engine
compartment" on
page 217.
& WARNING
• Serio us per sonal injur y may oc cur a s a re sult of improperly
performed maintenan ce , adjustment s or repair s.
• Alway s be e xtremely careful when working on the vehi cle .
Alway s follow commonly accepted s afety pra ctice s and general
c ommon sen se . Ne ver ri sk p ers onal injury .
• Do not attempt any of the maintenan ce , check s or repair s
de scr ibed on the follo wing page s if you are not full y familia r with
the se or other procedure s with respect t o the vehicle , or are uncer ­
tain ho w to pr oceed .
• Do not do any work without the proper tool s and equ ipment .
Ha ve the ne cessa ry work done by your authorized Audi deale r or
another properly equipped and qu alified work shop .
~