2014 AUDI TT COUPE check engine

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and topping up fluids
CD CAUTION
Remove any fuel spills from the paintwork im­
mediately.
Releasing the tank flap manually
The tank flap can be released manually if the
tank unlocking system should fail to operate.
Fig. 208 Luggage compartment: Cover in the right side
trim
.. Open the boot lid.
.. Lift the floor panel.
.. Release the ring from its holder and carefully
pull the ring ¢ Fig. 208.
Em ission control
systems
Catalytic converter
Applies to vehicles with petrol engine: The vehi­
cle must only be used with unleaded petrol; oth­
erwise the catalytic converter will be irreparably
damaged.
Never allow the fuel tank to run completely dry,
as the irregular supply of fuel can cause misfir­
ing. This allows unburnt fuel to enter the exhaust
system, which can cause overheating and dam­
age to the catalytic converter.
Diesel particulate filter
Applies to vehicles with diesel engine: The die­
sel particulate filter can filter out almost all soot
particles contained in the exhaust gas. In normal
driving conditions the filter is self-cleaning.
Should the self-cleaning function of the filter not
be able to operate, e.g. when the vehicle is con­
tinuously used only for short trips, the filter be-
220 comes
obstructed with soot and the symbol Cl
for the diesel particulate filter lights up
¢page 15.
A WARNING
The exhaust system is very hot when the vehi­
cle is being driven and after the engine has
been switched off.
- Never touch the tailpipes when they are hot
- risk of burns!
- Because of the high temperatures which can
occur in the emission control system (cata­
lytic converter or diesel particulate filter),
do not park the vehicle where the exhaust
can come into contact with flammable ma­
terials under the car (e.g. on grass or at the
forest edge) -risk of fire!
- Do not apply any undersea[ agents in the
area around the exhaust system -risk of
fire!
Engine compartment
Working on components in the engine
compartment
Extra caution is necessary when working on com­
ponents in the engine compartment.
Always be aware of the danger of injury and
scalding as well as the risk of accident or fire
when working in the engine compartment (e.g.
when checking and refilling fluids). Always ob­
serve the warnings listed below and follow all
normal safety precautions. The engine compart­
ment of any motor vehicle is a potentially haz­
ardous area ¢ .,&.
A WARNING
- Switch off the engine.
- Switch off the ignition.
- Apply the parking brake.
- Pu t the gear lever in neutral or selector in P.
- Wait for the engine to cool down.
- Keep children away from engine compart-
ment.

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Never spill fluids on a hot engine. These flu­
ids can cause a fire (e.g. radiator anti­
freeze).
- Take care not to cause short circuits in the
electrical system, especially when working
on the battery.
- When working in the engine compartment
be aware that the radiator fan may start
running suddenly, even if the ignition is
switched off-risk of injury!
- Do not unscrew the cap on the expansion
tank when the engine is hot. The cooling
system is under pressure.
- Protect face, hands and arms by covering
the cap with a large, thick rag to protect
against escaping coolant and steam.
- Never remove the engine cover panel -risk
of burns!
- If any tests have to be performed with the
engine running, there is an extra safety risk
from the rotating parts, such as the drive
belts, alternator and radiator fan, etc., and
from the high-voltage ignition system.
- Vehicles with automatic gearbox: Never
open the throttle inadvertently (for instance
by hand from the engine compartment) if a
gear is engaged while the vehicle is station­
ary with the engine running. The vehicle
could otherwise start moving immediately
and possibly cause an accident.
- Observe the following additional warnings if
work on the fuel system or the electrical
system is necessary:
- Always disconnect the battery.
- Do not smoke.
- Never work near naked flames.
- Always keep an approved fire extinguisher
immediately available.
CD CAUTION
When topping up fluids make sure the correct
fluid is put into the correct filler opening. This
can otherwise cause serious malfunctions or
engine damage. Checking
and topping up fluids
® For the sake of the environment
Inspect the ground underneath your vehicle
regularly so that any leaks are detected at an
early stage. If you find spots of oil or other
fluids, have your vehicle inspected in the
workshop.
{D) Note
On right-hand drive vehicles* some of the
containers/ reservoirs mentioned below are
located on the other side of the engine com­
partment.
Opening the bonnet
The bonnet is released from inside the vehicle.
Fig. 209 Footwell on driver's side: Release lever
Fig. 210 Unlocked bonnet: Lever
The wiper arms should be resting on the wind­
screen: make sure they are not in a raised posi­
tion. Otherwise the paint may get damaged.
� With the driver's door open, pull the lever un­
der the dashboard in the direction indicated (ar­
row) ¢ Fig. 209.
� Lift the bonnet slightly¢.&_.
11111>
221

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and topping up fluids
.. Press the release lever ¢Fig. 210 in the direc­
tion indicated (arrow). This will release the ar­
rester hooks.
.. Open the bonnet.
& WARNING
To avoid the risk of being scalded, never open
the bonnet if you see steam or coolant escap­
ing from the engine compartment. Wait until
no steam or coolant can be seen before open­
ing the bonnet.
Closing the bonnet
.. To close the bonnet, pull it down to overcome
the spring pressure.
Engine compartment layout
Main components for checking and refilling ..
Then let it drop into the catches; do not press
down ¢,8. .
& WARNING
- For safety reasons the bonnet must always
be completely closed when the vehicle is
moving. After closing it always check that it
is properly secured. The bonnet must be
flush with the adjacent body panels.
- Should you notice that the bonnet is not
safely secured when the vehicle is moving,
stop the vehicle immediately and close the
bonnet properly, otherwise it could cause an
accident .
Fig. 211 Typical locations of fluid containers and engine oil filler cap
(D Coolant expansion tank (-L) .....
@
@
@ Engine
oil dipstick ............ .
Engine oil filler cap(�)
...... .
Brake fluid reservoir ((0))
222 225
®
223
224 ®
226 0 Jump-start
terminals: under a cover
(+); earth point on body(-) ...
...
249
Fuse box ..................... 254
Windscreen washer container (W)
229 ....

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positions of the engine oil dipstick and en­
gine oil filler cap ¢Fig. 211 (items @and @)
may be different on some engine versions.
Engine oil
Choosing the correct engine oil grade
The service interval display in the instrument
cluster of your vehicle will inform you when it is
time for an oil change. We recommend having
the oil changed by a qualified workshop.
If you have to top up the oil between oil changes,
use the grades of oil specified in the table in ac­
cordance with VW standards. You will need to
know whether
- the vehicle is being serviced based on the flexi­
ble or fixed oil change service (see Last service
record in Service Schedule).
- the vehicle has a petrol or diesel engine (see
sticker on inside of fuel tank flap).
- a diesel particulate filter is fitted on the vehicle
(see Delivery Inspection section of Service
Schedule).
Oil Change Serv-
Oil Change Serv-
ice (flexible)
ice (fixed)
Petrol VW50400 vw
502 00
engine Alternatively:
vw 504 ooa)
Diesel VW50700 With
diesel par-
engine ticulate
filter:
VW 507 00
Without diesel
particulate filter:
vw 505 01
Alternatively: vw 507 oob
>
al When using fuel complying with EN 228 or DIN 51626-1
b) When using fuel complying with EN 590 or DIN 51628
CD} Note
If the oil grades specified in the table are not
available, you can use one of the following
....
� grades
as a substitute. To prevent damage to
� the
engine, this should not be done more
.... Checking
and topping up fluids
than once between oil changes and no more
than 0.5 Litres should be used.
- Petrol engines: ACEA A3 or API SN (API SM)
standard
- Diesel engines: ACEA C3 or API CJ-4 stand­
ard
(©) Note
- For China: Only oil complying with VW
standard 502 00 with viscosity SAE 5W-40
may be used on vehicles with a petrol en-
gine.
- The flexible oil change service is not availa­
ble in all countries.
Checking the engine oil level
Fig. 212 Guide for oil dipstick
Checking oil level
.,. Park your vehicle on a Level surface.
.,. Allow the warm engine to run briefly at idling
speed and then switch off the ignition.
.,. Wait approx. two minutes.
.,. Pull out the dipstick. Wipe the dipstick with a
clean cloth and insert it again, pushing it in as
far as it will go.
.,. Then pull the dipstick out again and check the
oil level ¢ Fig. 212. If the oi L Level is too Low,
add more engine oil¢ page 224.
Oil level in area 0
.,. Do not top up oil.
Oil level in area @
.,. Oil can be topped up. After topping up the oil (£)
(£)
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(Il
Level should be in area 0·
..,
223

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and topping up fluids
Oil level in area @
.. Oil
must be topped up. After topping up the oil
Level should be in area 0-
Depending on how you drive and the conditions
in which the car is used, oil consumption can be
up to 0.5 Ltr./1000 km. Oil consumption is Likely
to be higher for the first 5000 km. For this rea­
son the engine oil Level must be checked at regu­
lar intervals, preferably when filling the tank and
before a journey.
Topping up the engine oil "t::r.
Fig. 213 Engine compartment: Engine oil filler cap
.. Switch off the engine.
.. Unscrew cap� from oil filler opening
¢Fig. 213, ¢page 222, Fig. 211.
.. Carefully
add 0.5 Litres of suitable oil
¢page 223. 0
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(X)
cc
.. After two minutes check the oil Level once again
¢ page 223, Checking the engine oil Level.
.. If
the oil Level is too Low, add more engine oil.
.. Replace the oil filler cap carefully and push the
dipstick all the way in.
_& WARNING
- Ensure that no oil comes into contact with
hot engine components when topping up:
this could cause a fire.
- Wash your skin thoroughly if it comes into
contact with engine oil.
CD CAUTION
- The oil Level must never be above area 0, as
this may result in damage to the catalytic
converter or to the engine. Contact a qua Li-
224 fied
workshop to extract the engine oil if
necessary
- No additives should be used with engine oil.
Any damage caused by the use of such addi­
tives would not be covered by the factory
warranty.
@ For the sake of the environment
- Never pour oil down drains or into the
ground.
- Always observe statutory requirements
when disposing of empty oil canisters.
Cooling system
Coolant
The engine cooling system is filled at the factory
with a mixture of conditioned water and coolant
additive. This coolant must not be changed.
The coolant Level is monitored via a warning Lamp
on the infotainment display ¢page 12. However,
we re com mend that it shou Ld be checked occa­
sionally.
If you do need to top up the coolant, use a mix­
ture of water and coolant additive. We recom­
mend mixing coolant additive with distilled wa­
ter .
Coolant additive
The coolant additive contains anti-freeze and cor­
rosion protection agent. Only use one of the fol­
lowing coolant additives. It is possible to mix
these additives.
Coolant additive Specification
G12++ TL
774 G
G13 TL
774 J
Only if the above
grades are not availa- TL
774 F
ble: G12+
The amount of coolant additive which needs to
be mixed with the water depends on the temper­
atures to be expected in the winter season. If the
anti-freeze concentration is too Low, the coolant
can freeze and cause engine damage.

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addi-Frost protec-
tive tion
Countries with min. 40 %,
min. -25 °C
warm climate max. 45 %
Countries with min.
50 %,
max. -40 °C
cold climate max.
60 %
CD CAUTION
- Have your qualified workshop check the
cooling system before the winter season to
make sure that the anti-freeze concentra­
tion is adequate for the conditions to be ex­
pected. This applies particularly if you drive
into a colder climate zone.
- To prevent damage to the engine, do not
use a different type of anti-freeze additive if
the approved type of additive is not availa­
ble. In this case use only water and bring
the coolant concentration back up to the
correct level as soon as possible by putting
in the specified additive.
- Always top up with fresh, unused coolant.
- Radiator sealants must not be added to the
coolant.
Topping up coolant
Fig. 214 Engine compartment: Cap of coolant expansion
tank
Checking coolant level
.. Park
your vehicle on a level surface .
.. Switch off the ignition .
.. Read off the coolant level on the coolant expan­
sion tank ¢ page 222, Fig. 211. When the en­
gine is cold, the coolant level should be be­
tween the marks. When the engine is warm, it
may be slightly above the top mark. Checking
and topping up fluids
Topping up coolant
Impor tant: The coolant expansion tank must not
be empty ¢(D.
.. Wait for the engine to cool down.
.. Cover the cap on the expansion tank with a
cloth, and carefully unscrew the cap anti-clock­
wise ¢ .&_ .
.. Add coolant in the correct concentration
¢ page 224 up to the top mark.
.. You should make sure that the fluid level re-
mains stable. If necessary, add more coolant.
.. Screw the cap on again tightly.
Any loss of coolant normally indicates a leak in
the cooling system. Drive to a qualified workshop
without delay and have the cooling system
checked. If there are no leaks in the system, a
loss of coolant can only occur if the coolant boils
and is forced out of the system as a result of
overheating.
A WARNING
- The cooling system is under pressure. Do
not unscrew the cap on the expansion tank
when the engine is hot: you could be scal­
ded by escaping steam.
- The coolant and coolant additive can be a
health hazard. Store the coolant additive in
the original container in a safe place out of
reach of children -risk of poisoning.
- When working in the engine compartment
be aware that the radiator fan may start
running suddenly, even if the ignition is
switched off-risk of injury!
CD CAUTION
Do not add coolant if the expansion tank is
empty. Air could have got into the cooling sys­
tem -risk of engine damage! In this case, do
NOT drive on. Obtain professional assistance .
225

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and topping up fluids
Brake fluid
&
8cm DOT 4 0
0
Fig. 215 Engine compartment: Cap of brake fluid reservoir
Checking brake fluid level
The brake fluid Level must be between the MIN
and MAX marks on the reservoir ¢ page 222,
Fig. 211.
If the Level goes down noticeably in a short time,
or drops below the MIN mark, there may be a
Leak in the brake system. Obtain professional as­
sistance. The brake fluid Level is also monitored
via a warning Lamp on the infotainment display
¢page 11.
In right-hand drive vehicles the brake fluid reser­
voir is on the other side of the engine compart­
ment.
Changing brake fluid
Your vehicle's Service Schedule will tell you the
regular intervals at which the brake fluid is due
for renewal. We recommend that you have the
brake fluid changed by a qualified workshop dur­
ing a service.
A WARNING
- Brake fluid is poisonous; it must be stored in
the sealed original container in a safe place
out of the reach of children.
- Heavy use of the brakes may cause a vapour
Lock if the brake fluid is left in the system
for too Long. This would seriously affect the
efficiency of the brakes and the safety of the
car -risk of accident!
226 CD
CAUTION
Brake fluid must not be allowed to come into
contact with the vehicle's body, otherwise it
will attack the paintwork.
Battery General notes
ALL work on batteries requires specialist knowl­
edge.
The battery is virtually maintenance-free. It is
checked as part of the Inspection Service.
When an airbag is triggered, the battery will, un­
der certain circumstances, be disconnected from
the on-board power supply for safety reasons
¢ .&.. in General notes on airbag system on
page 209.
Disconnecting the battery
The battery should always be Left connected. If
the battery is disconnected, some of the vehicle's
functions will become inoperative (e.g. electric
windows). These functions will require resetting
after the battery is reconnected. For this reason,
the battery should only be disconnected from the
vehicle's electrical system when absolutely nec­
essary.
If the vehi cle is not used for long periods
If you do not drive your vehicle for a period of
several days or weeks, the power management
will gradually shut off the on-board systems one
by one, or reduce the amount of current they are
using. This Limits the amount of power consumed
and helps to ensure reliable starting even after a
Long period ¢ page 106. Certain convenience fea­
tures, such as interior Lighting or electric seat ad­
justment, may not be available. These functions
will be restored when you switch on the ignition
and start the engine. Even though some systems
are deactivated automatically, certain electrical
equipment continues to draw current even when
the ignition is off. If the vehicle is Left standing
for several months, this can result in total bat-
tery discharge. If the battery is allowed to dis­
charge completely, an internal chemical reaction
..,_

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the battery. To avoid this, the battery
should be recharged at least once a month
¢ page 228. Do not disconnect the battery; oth­
erwise the anti-theft alarm system* will be out of
operation.
Winter conditions The battery is drained more in cold weather,
which means that the starting power is reduced.
For this reason, have the battery checked and
charged if necessary before the start of winter.
A WARNING
-
-All work on batteries requires specialist
knowledge. For queries regarding the vehi­
cle battery please seek the assistance of a
qualified workshop -risk of chemical
burns / risk of explosion!
- The battery must not be opened. Do not at­
tempt to make any changes to the electro­
lyte level of the battery. Otherwise, there is
a risk that a mixture of oxygen and hydrog en
gas can accumulate and cause an explosion.
Important safety warnings for handling a
car battery
All work on batteries requires specialist knowl­
edge.
The vehicle battery is located under the floor
panel in the luggage compartment.
® Wear
safety glasses!
A Battery
acid is extremely corrosive. Wear
protective gloves and safety glasses.
@ Keep
open flames, sparks, uncovered
lights and lit cigarettes away from the
battery!
� A
highly explosive mixture of gases is giv-
en off when the battery is under charge!
® Keep
children away from the battery and
battery acid.
A WARNING
Always be aware of the danger of injury and
chemical burns as well as the risk of accident Checking
and topping up fluids
or fire when working on the battery and the
electrical system.
- Wear safety glasses. Do not allow acid or
lead particles to come into contact with
eyes, skin or clothing.
- Battery acid is extremely corrosive. Wear
protective gloves and safety glasses. Do not
tilt the battery -acid can leak out of the va­
pour vent. If electrolyte should splash into
the eyes rinse at once for several minutes
using clear water. Then seek medical care
immediately. Neutralize any acid splashes
on the skin or clothing with soap solution,
and rinse off with plenty of water. If acid is
swallowed by mistake, consult a doctor im­
mediately.
- Keep open flames, sparks, uncovered lights
and lit cigarettes away from battery. Avoid
sparks (including those from static charges)
when handling cables and electrical equip­
ment. Never cross the battery poles. The re­
sulting high-energy sparks can cause injury.
-A highly explosive mixture of gases is given
off when the battery is under charge. Only
charge battery in a well ventilated area.
- Keep children away from the battery and
battery acid.
- Switch off all electrical equipment and the
ignition before starting any work on the ve­
hicle's electrical system. The minus cable of
the battery must be disconnected. When
changing a light bulb, it is sufficient to only
turn off the light.
- Before disconnecting the battery, turn off
the anti-theft alarm system*! Otherwise the
alarm will be triggered.
- When disconnecting the battery from the
vehicle's electrical system, first disconnect
the minus cable and then the plus cable.
- Before reconnecting the battery, turn off all
electrical equipment. First connect the plus
cable, then the minus cable. The battery ca­
bles must NOT be connected to the wrong
battery poles -this can cause an electrical
fire.
- Never charge a frozen or thawed out battery
- risk of explosion and chemical burns! A
battery must be replaced once it has frozen.
..,..
227