2013 AUDI TT catalytic converter

12 Instruments and warning/indicator lights
Fuel gauge
The fuel gauge works only when the ignition is
on . When the needle reaches the red area, the
warning light in the instrument cluster will il­
luminate ¢
page 20 00']. Time to refuel!
(D Note
Never run the tank completely dry! An ir­
regular supply of fue l can cause eng ine
misfiring and fuel could enter into the ex ­
haust system. The catalytic converter
could then overheat and be damaged.
Speedometer with odometer
The speedometer shows you the vehicle
speed , and the odometer shows you how
many miles (kilometers) you have driven.
Fig. S Speedomete r close -up: odomete r display
The distance driven is shown in miles (USA
models) or in kilometers (Canada models).
lower odometer
The lower odometer shows the total number
of miles (kilometers) driven.
Upper odometer (trip odometer)
The upper odometer shows the tota l number
of mi les (kilometers) driven since you last re­
set the odometer back to zero . You can use
this odometer when you want to keep track of how many miles (kilometers) you have driven
for a single trip or errand. The last digit indi­
cates 1/10 of a mile (100 meters) . You can set
the trip odometer back to zero by pressing the
reset button
¢fig. 5.
With the ignition off, pushing of the Set/
Check button ¢
page 10, fig. 3@ can turn on
the display fie ld lighting for a few seconds.
Malfunction message
If there is a malfunction somewhere in the in­
strument cluster,
dEF w ill appear in the trip
odometer and will stay on . Contact your au­
thorized Audi dea ler to have the prob lem cor­
rected.
Immobilizer
When the ignition is sw itched on, the data on
the ignition key are scanned automat ica lly.
If an unauthor ized key was used,
SAFE is dis­
played continuously in the odometer display
field . The vehicle cannot be operated
¢ page 33.
Warning/indicator
Lights
Description
The indicator lights in the instrument cluster
blink or turn on. They indicate functions or
malfunctions ¢.& .
Messages may appear with some indicator
li ghts. The messages turn off after a sho rt
time. To display a message again, press the
Set/Check button¢
page 10, fig. 3@ . If
there is more than one malfunction, the indi­
cator lights will turn on one after the other for
approximately two seconds each.
Some indicators lights in the display can turn
on in severa l co lors.
A WARNING
- Failure to heed warning lights and other
important vehicle information may result
in ser ious personal injury or vehicle dam­
age.
- Whenever stalled or stopped for repair,
move the vehicle a safe distance
off the
road, stop the engi ne, and turn on the
emergency flasher¢
page 45.

160 Driving and en vironm ent
Avoid damaging the
vehicle
When you are driving on poor roads, or over
curbs, steep ramps, etc ., make certain that
low-lying parts such as spoilers and exhaust
system parts do not bottom out and get dam­
aged.
This is especially true for vehicles with low­
slung chassis (sports chassis) and fully loaded
vehicles .
Driving through water
on roads
Note the following to avoid vehicle damage
when driving through water, for example on
flooded roads:
- T he water must not be any highe r tha n the
bottom of the vehi cle body.
- Do no t drive faster than wa lking speed.
_& WARNING
After d riving through water, m ud, slush,
etc., the brakes may be slow to take effect
because o f wet brake ro tors and pads . Dry
the brakes fi rst by braking carefully to re­
store the full braking effect.
(]) Note
Vehicle components such as the engine,
transmiss ion, suspension or electrical sys ­
tem can be severely damaged by driving
through water.
- Check the depth o f the water before driv ­
ing through it.
- Do not stop the veh icle, dr ive in reverse
or switch the engine
off when driving
through water.
- Keep in mind that oncoming vehicles may c reate waves that raise the water
l evel and make it too deep for your vehi­
cle to drive through safely.
- Avoid driving thro ugh salt water because
it can ca use corrosion.
-
Catalytic converter
It is very important that your emission con­
trol system (catalytic converter) is function­
ing properly to ensure that your vehicle is run­
ning in an environmentally sound manner.
.,. Always use lead-free gasoline ¢ page 176,
Fuel supply .
.,. Never run the tank down all the way to
empty .
.,. Never put too much motor o il in your en-
gine ¢
page 185, Adding engine oil 'l::r. .
.,. Never try to push- or tow-sta rt you r vehicle.
The catalyt ic converter is an efficient "clean­
u p" dev ice buil t into the exhaust system of
t h e vehi cle. The cata lytic conve rter bu rns
many of t he pollu tan ts in the exha ust gas be­
f ore they are re leased into the atmosphere.
T he exclusive use of unleaded fuel is critica lly
important for the life of the catalyt ic convert­
er and prope r fu nct ion ing of the engine.
A WARNING
- Do not park or operate the vehicle in
areas where the hot exha ust system may
come in contact with dry g rass, brush,
fue l spill or other material wh ich can
cause a fire.
- Do not app ly additiona l undercoating or
rustproofing on or near the exhaust
manifold, exhaust pipes, catalytic con­
verter or heat sh ields. Dur ing driv ing, the
substance used fo r undercoating could
overheat and cause a fire.
(D Note
- Be aware that just one tank filling with
leaded fuel will already ser iously de-
grade the performance of the catalytic
converte r.
- Do not exceed the correct engi ne oil level
¢page 185.
-Do not drive until the fuel tank becomes
completely empty . The engine co uld mis-
fire. Unburned fuel could also get into ..,.

the exhaust system and this could cause
the catalytic converter to overheat.
- Do not turn off the ignition while the ve ­
hicle is moving .
- Do not con tinue to operate yo ur vehicle
under these conditions, as otherwise fuel
can reach the cata lytic converter . This
could result in overheating of the con­
verter, requ iring its replacement.
- To assure efficient operation of the Emis­
sion Control System:
- Have your veh icle ma inta ined properly
and in acco rdance with the service rec­
ommendations in your Wa rranty
&
Ma intenan ce booklet.
- Lac k of proper maintenance as well as
improper use of the vehicle will impa ir
t he funct ion of the emission control
system and cou ld lead to damage.
@ For the sake of the environment
Even when the Emission Contro l System is
operating p roperly, the exhaus t gas can
have a s ulfu r- like exhaust gas smell under
some operating states. This depends on
the s ulfur content o f the fue l being used.
Using a different brand of fuel may help,
or filling the tank w ith lead-free super
grade gasoline .
Operate your vehicle
economically and
minimize pollution
General
Your personal style of driving will determine
the economy of your vehicle, as well as ex­
haust and noise levels .
Fuel economy, environmental impact, and
wear on your engine, brakes and t ires largely
depend on three factors :
- your persona l driving style
- operating conditions
- technical lim itations
I f you anticipate w hat you need to do nex t and
d rive economically, you can eas ily cut your
Dri vin g and en vironm ent 161
fuel consumption by 10 -15 percent. Th is sec ­
tion w ill give yo u some tips on how you can
help the env ironment and your pocketbook .
(D Tips
The cons umption estimates as published
by ENVIRONME NTAL PROTEC TION AGENCY
(EPA) and Transport Canada may not corre­
spond to your actual consumption on the road, which will vary depending upon vehi­
cle load and speed, road and weather con­
dit ions, trip length, etc.
Drive smoothly and keep a lookout
ahead
Vehicles use the most fuel when they are ac­
celerating.
Avoid unnecessary accelerat ing and braking .
Vehicles use the most fuel when they are ac­
ce lerat ing . If you anticipate what is going to
happe n next, you will need to brake less and,
th us, accele rate less. Let the vehicle coast
whenever possible -for examp le when you see
that the next t raff ic light is red.
Avoid full throttle
Driving at moderate speeds saves fuel and
improves your mileage.
"' Try and keep well below your car's maxi -
mum speed.
Acce lerat ing gently reduces fue l consump­
tion, eng ine wear, and does not disturb the
environment.
Fuel consumpt ion, exhaust emiss ions and en­
gine noise increase disproportionately at high
speeds. If you drive at approximately three
quarte rs of top speed, fuel consumption w il l
be reduced by one half. Never drive faster
t h an the posted speed limit and weathe r con­
ditions perm it.
•
•

176 Fuel supply and filling your fuel tank
Fuel supply and filling
your fuel tank
Gasoline
Fuel supply
Using the right fuel helps keep the environ­
ment clean and prevents engine damage .
Fuel recommendation
The fuel recommended for your vehicle is un­
lead ed premium
grade gasoline . See also
¢
page 240, Data . Audi recommends using
TOP TIER Detergent Gasoline with a minimum
octane rating of 91 AK I (95 RON). For more
information on TOP TI ER Detergent Gasoline,
p lease go to the officia l website (www.toptier­
gas.com).
The recommended gasoline octane rating for
your engine can also be found on a label locat­
ed on the inside of the fuel filler flap. This rat­
ing may be specified as AKI or RON.
Your veh icle may also be operated using un­
l eaded regular gasoline with a minimum oc­
tane rating of 87 AKI/91 RON. However, using
87 AKI/91 RON octane fuel wi ll slightly re ­
duce engine performance.
Use unleaded gasoline only. Unleaded gaso­
line is available throughout the USA, Canada ,
and in most European countries . We recom­
mend that you do not take your vehicle to
areas or countries where unleaded gasoline
may not be available.
F or more information on refueling your vehi­
cle, see¢
page 177.
Octane rating
Octane rating ind icates a gasoline's ability to
resist engine damaging "knock" caused by
premature ign ition and detonation. Therefore,
buying the correct grade of gasoline is very
important to help prevent possible engine
damage and a loss of engine performance.
Gasoline most commonly used in the United
States and Canada has the following octane r
atings that can usually be found on the fi ller
pump:
- Premium Grade: 91 -96 AKI
- Regular Grade: 87 -90 AKI
Explanation of the abbreviations:
AKI = Anti Knock Index= (R+M)/2 = (RON
+MON )/2
RON= Research Octane Number
MON = Motor Octane Number .
(D Note
-Do not use any fuel w ith octane ratings
lower than 87 AKI or 91 RON otherwise
expensive engine damage will occur.
- Do
not use leaded gasoline! The use of
leaded gasoline w ill severely damage
your vehicle's catalytic converter and its
ability to control exhaust emissions.
Blended gasoline
Use of gasoline containing alcohol or
MTBE (methyl tertiary butyl ether)
You may use unleaded gasoline blended with
alcohol or MTBE (commonly referred to as
oxygenates) if the blended mixture meets the
following criteria:
Blend of gasoline methanol (wood alcohol or
methyl alcohol)
-Anti -knoc k index must be 87 A KI or higher.
- Blend must contain no more than 3% meth-
anol.
- Blend must contain more than 2% co-sol-
vents .
Blend of gasoline and ethanol (grain alcohol
or ethyl alcohol)
-Anti -knock index must be 87 AKI or higher.
- Blend must not contain more than 10%
ethanol.
Blend of gasoline and MTBE
-Anti-knock index must be 87 AKI or higher. ll-

250 Index
Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Driver information system Boost .......................... .. 28
E ng ine oi l tempe ratu re d isplay .. .. .... 26
Engine oil temperatu re indicator ...... 28
Menu button . . . . . . . . . . . . . . . . . . . . . . 25
Menu display . . . . . . . . . . . . . . . . . . . . . . 24
Open door or front lid warning . . . . . . . . 22
Outside temperature display .. .. .. .. . . 22
Red symbols ................. ...... 13
Service interval display ...... .. .. .. .. 28
Setting .. .. ... .... ...... ... ... .. .. 26
Sound system display . . . . . . . . . . . . . . . 22
Trip computer. . . . . . . . . . . . . . . . . . . . . . 23
ye llow symbo ls ......... .. .. .. .. .. .. 13
Driver seat
refer to Seat ing pos ition . ........ .. .. 91
Driving Run-flat tires . ........... .... .... . 218
Driving safely . . . . . . . . . . . . . . . . . . . . . . . 90
Driving through water ........ .. .. ... 160
Duplicate key .............. ... .... .. 32
Dust filter . ... .............. .. .. .. .. 67
E
Efficiency program . . . . . . . . . . . . . . . . . . . 26
Fuel economy messages ..... .. .. .... 27
Memory levels . . . . . . . . . . . . . . . . . . . . . 23
Other equipment ........... .. .. .. .. 27
Elapsed time . . . . . . . . . . . . . . . . . . . . . . . . 23
Electro-mechanical power assist . . . 17, 155
E lectronic diffe rent ial lock (EDL) .. .. ... 150
Warn ing/ indicator lights ....... .. .... 18
Electronic immobilizer . . . . . . . . . . . . 12, 33
Electronic power control EPC warning/indicator light . ..... .. .. 19
E lect ronic speed limiter . . . . . . . . . . . . . . . 31
Electronic Stability Control (ESC) Warning/indicator lights ..... .. .. .. . . 17
Electronic Stabilization Control (ESC) . .. 150
E mergency flasher . . . . . . . . . . . . . . . . . . . 45
Warn ing/ indicator l ights ... .... .... .. 21
Emergency locking ............. .... .. 37
Emergency operation
Rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
E mergency starting ........ .... ..... 232 Emergency towing
.............. .... 234
Energy management . ............ ... 156
Battery power ................ .... 157
Driver notification ............. .. .. 157
Engine Checking and filling locations .... .. .. 182
Coolant . .. ... ... .. .......... ... .. 187
Hood . .... .. .. .. ............. .. .. 180
Starting . . . . . . . . . . . . . . . . . . . . . . 71, 72
Starting with jumper cables ... .. .. .. 232
Stopping .. .... .. .. .............. .. 73
Engine compartment ......... ... .. .. 182
Safety instructions ... .......... .. .. 180
Working in the eng ine compartment 180
Engine coolant system Malfunction ..... ... ........... ... . 16
Radiator fan . .. .. ..... ..... ... .. .. 189
Temperature gauge ....... ..... .. .. . 11
Engine cooling system ........... .... 187
Adding coolant ................ .... 188
Checking the engine coolant level ..... 187
Engine data ..... .. ................ . 240
Engine hood
Closing . .. .. .. .. ............... .. 180
How to release the hood .......... .. 180
Engine oil ...... .. .. ..... ... ... .. .. 182
Adding . ...... .. .. ..... ... ... .. .. 185
Additives .. .. .. .. .. ... ........ .... 185
Changi ng ... .. .. ............. .. .. 186
Checking the engine oil leve l ..... .... 185
Indications and conditions requiring ex-
tra checking ..... ................ . 185
Oil consumption . ................. . 184
Oil grades . ................... .... 182
Recommended oil check intervals . .. .. 185
Specification and viscosity . ...... .. .. 182
Temperature display ........ ... .. .. . 26
Engine oil level .... ................ .. 19
Engine oil pressu re (ma lfunction) .... .. . 16
Engine oil sensor defective . . . . . . . . . . . . 19
Engine oil temperature indicator ........ 28
Engine speed limitation . ......... .. .. . 19
Environment Break-in period .................... 159
Catalytic converter ....... ...... .. .. 160
Dispos ing of your veh icle battery . . . . . 191
Driving at high speeds . ...... ... .. .. 161