check engine light AUDI TT ROADSTER 2016 Owner's Manual

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CX) Checking
and topping up
fluids
Fuel Petrol grade
Applies to: vehicles with petrol engine
The correct grade of petrol is Listed inside the
fuel tank flap.
The vehicle is equipped with a catalytic converter
and must only be run on unleaded petrol. Petrol
must be sulphur-free and must comply with the
EN 228 standard. You can fuel your vehicle with
fuels containing a maximum of 10% ethanol
(ElO). The petrol grades have different octane
ratings (RON).
The following headings relate to the sticker on
the inside of your vehicle's tank flap:
Unleaded fuel only RON/ROZ 95 Super,
Premium or min. RON/ROZ 91 Normal
The use of premium petrol (95 RON) is recom­
mended. If that type of fuel is not available, reg­
ular petrol (RON 91) can be used with a slight
loss of power.
Unleaded fuel only, min. RON/ROZ 95
Super, Premium
Premium petrol (at least 95 RON) must be used.
If premium petrol is not available, the engine can
be run on regular petrol with 91 RON as an emer­
gency measure. In this case only use moderate
engine speeds and a light throttle. Fill up with
premium or Super Plus petrol as soon as possi­
ble.
Unleaded fuel only RON/ROZ 98 Super Plus
or min. RON/ROZ 95 Super, Premium
The use of Super Plus petrol (98 RON) is recom­
mended. If that type of fuel is not available, pre­
mium petrol (RON 95) can be used with a slight
loss of power.
If premium petrol is not available, the engine can
be run on regular petrol with 91 RON as an emer­
gency measure. In this case only use moderate
engine speeds and a light throttle. Fill up with Checking
and topping up fluids
premium or Super Plus petrol as soon as possi­
ble.
CD CAUTION
- Do NOT fuel your vehicle with high-ethanol
fuel blends (e.g. ESQ or E85). This will dam­
age the fuel system.
- Just one tank of leaded fuel or fuel with
metallic additives will permanently impair
the efficiency of the catalytic converter.
- You should use only petrol additives which
have been approved by Audi. Additives with
so-called octane boosters or antiknock addi­
tives can contain metallic additives that
cause significant damage to the engine and
the catalytic converter. Do not use such ad­
ditives.
- Metal-based fuels, which can be identified
from the marking on the fuel dispenser,
must not be used. LRP fuel (lead replace­
ment petrol) also contains high concentra­
tions of metallic additive. Risk of engine
damage!
- High engine speed and full throttle can
damage the engine when using petrol with
an octane rating lower than the correct
grade for the engine.
((D Note
- You can use higher octane fuel than your en­
gine requires.
- In countries where sulphur-free fuel is not
available, you may use low-sulphur fuel in­
stead.
Diesel fuel
Applies to: vehicles
with
diesel engine
Please note the information on the inside of the
fuel tank flap.
The use of sulphur-free diesel complying with
the EN 590 standard is recommended.
Diesel can thicken at very low temperatures,
which can result in problems starting the engine
or prevent the engine from running smoothly.
For this reason, filling stations in some countries
offer winter-grade diesel fuel during the cold 1)11,,
241

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and topping up fluids
... After fuelling, remove the funnel and close the
fuel tank flap so that it locks in place.
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. 211 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. 211.
Emission control
systems
Catalytic converter
Applies to: vehicles with petrol engine
The vehicle must only be used with unleaded pet­
rol, otherwise the catalytic converter will be ir­
reparably 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 diesel particulate filter can filter out almost
all soot particles contained in the exhaust gas. In
normal driving conditions the filter is self-clean-
244 ing.
Should the self-cleaning function of the filter
not be able to operate, e.g. when the vehicle is
continuously used only for short trips, the filter
becomes obstructed with soot and the symbol
C for the diesel particulate filter lights up
¢page 17.
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, do not
park the vehicle where the exhaust can
come into contact with flammable materials
under the car (e.g. on grass or at the forest
edge) -risk of fire!
- Do not apply any underseal 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 .
A WARNING
- Switch off the engine.
- Switch off the ignition.
- Apply the parking brake.
- Put 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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and topping up fluids
Opening the bonnet
� With the driver's door open, pull the Lever un­
der the dashboard in the direction indicated
(arrow) ¢Fig. 212.
� Lift the bonnet slightly¢,&.
� Press the release Lever ¢Fig. 213 in the direc­
tion indicated (arrow). This will release the ar­
rester hooks.
� Open the bonnet.
Closing the bonnet
� To close the bonnet, pull it down to overcome
the spring pressure.
� Then Let it drop into the catches; do not press
down ¢,&.
En ine com artment la out
Main components for checking and refilling A
WARNING
- To avoid the risk of being scalded, never
open the bonnet if you see steam or coolant
escaping from the engine compartment.
Wait until no steam or coolant can be seen
before opening the bonnet.
- 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. It should not be possi­
ble to Lift the front edges of the bonnet.
- 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. 214 Typical locations offluid containers and engine oil filler cap
@ Coolant expansion tank (-L) ¢ page 249
@ Engine oil dipstick ¢ page 247
@ Engine oil filler cap(�) ¢ page 247
246 @
Brake fluid reservoir (0)) ¢ page 250
® Jump-start terminals: under a cover (+);
earth point on body (-) ¢page277

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CX) 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 by a warning lamp
• ¢page 14. However, we recommend that it
should be checked occasionally.
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
G13 TL 774
J
G12++ TL 774 G
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.
Cool ant addi· Frost protec-
tive tion
Hot regions min. 40%,
min. -25 °C
max. 45%
Cold regions
min. 50%, max. -40 °C
max. 55%
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- Checking
and topping up fluids
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. 217 Engine compartment: Cap of coolant expansion
tank ;:::;
co
CD
Please refer to the safety notes ¢ A in Working
on components in the engine compartment on
page 244.
Checking the coolant level
... Park your vehicle on a level surface.
.,.. Switch off the ignition.
.,.. Read
off the coolant level on the coolant ex­
pansion tank¢ page 246, Fig. 214. When the
engine is cold, the coolant level should be be­
tween the marks. When the engine is warm, it
may be slightly above the top mark.
Topping up the coolant
Important: 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 249 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.
IJi-
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CX) Explanation
of warnings on vehicle battery:
® 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 may
be given off when the battery is under
charge!
® Keep children
away from batteries and
battery acid.
.&_ WARNING
Any work on the batteries and electrical sys­
tem in your vehicle entails a risk of injury and
chemical burns in addition to danger of acci­
dent or fire. For this reason, you must have
the work carried out by a qualified workshop.
CD CAUTION
If the car is left standing for Long periods,
protect the battery from frost. The battery
will be damaged irreparably if it is allowed to
freeze <=> page 2 51.
@ For the sake of the environment
'8 Batteries contain toxic substances including
sulphuric acid and Lead. Please contact a
qualified workshop if you have any questions.
Vehicle battery
The term "vehicle battery" refers to the 12 Volt
battery in your vehicle.
If the vehicle 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 118. Certain convenience fea­
tures, such as interior Lighting or electric seat ad­
justment, may not be available. These functions Checking
and topping up fluids
will be restored when you switch on the ignition
and start the engine.
Even though some systems are deactivated auto­
matically, certain electrical equipment continues
to draw current even when the ignition is off. If
the vehicle is Left standing for Long periods, this
can result in total battery discharge. If the vehi­
cle battery is allowed to discharge completely, an
internal chemical reaction damages the battery
irreparably. To avoid this, the vehicle battery
should be recharged at Least once a month
<=> page 251. Please contact a qualified workshop
if you have any questions.
Winter conditions
Cold weather is very hard on the vehicle battery.
The starting capacity may be reduced as a result.
For this reason, you should have the vehicle bat­
tery checked by a qualified workshop before the
start of winter.
Charging the vehicle battery
Fig. 219 Engine compartment: Terminals for jump leads
and battery charger
Important: Only use chargers with a maximum
charge voltage of 14.8 V (the battery cables do
not have to be disconnected).
� Note the warnings c:> A in General warnings
for batteries on page 251 and<=> A_ .
� Switch
off all electrical equipment and the igni­
tion.
� Open the bonnet<=> page 245.
� Open the red cap on the positive terminal
<=>Fig. 219.
� Connect the charger cables to the jump-start
terminals as specified <=> Fig. 219.
�
251

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and topping up fluids
... Now connect the battery charger to the mains
and switch on.
... After charging the battery: switch off the bat-
tery charger and disconnect the mains cable .
... Detach the charger cables from the terminals.
... Refit
the red cap onto the positive terminal.
... Close the bonnet ¢page 245.
A WARNING
- A highly explosive mixture of gases may be
given off when the battery is under charge.
Only charge the vehicle battery in a well
ventilated area.
- When it is discharged the vehicle battery
can freeze at temperatures around 0°
(. You
must not use a vehicle battery which has
frozen, even after it has thawed, because
the ice may have cracked the battery casing
and allowed the battery acid to escape -risk
of explosion and chemical burns! Please
contact a qualified workshop if you have any
questions.
- Do not connect or disconnect the charging
cables during the charging process -risk of
explosion!
1 Note
- Use only the terminals in the engine com­
partment to charge the vehicle battery.
- Before you charge the vehicle battery, al­
ways read and follow the manufacturer's in­
structions for using the battery charger.
Windscreen washer
Fig. 220 Engine compartment: Cap of windscreen washer
container
252 �
0
>
u..
co The
container for the windscreen washer@ con­
tains the cleaning fluid for the windscreen and
the headlight washer system* ¢ page 246,
Fig. 214. For the container capacity, please refer
to¢ page 288 .
Clean water should be used when topping up. If
possible, use soft water to prevent scaling on the
washer jets. Always add washer fluid to the wa­
ter. In cold weather you should add anti-freeze to
the water to prevent it from freezing.
CD CAUTION
- The anti-freeze concentration must be
matched to the climate of the country in
which you are driving. If the concentration
is too high, damage to the car may result.
- Never put in radiator anti-freeze or other
additives.
- Never use washer fluid which contains paint
thinners or solvents as it can damage the
paintwork.
Service interval display
The service interval display detects when the
next service is due for your vehicle .
There are two service interval display levels:
- Inspection or oil change reminder: After a cer­
tain mileage, a service reminder will appear on
the infotainment display each time the ignition
is switched on/off. The distance or time re­
maining will be shown briefly.
- Inspection or oil change due: When your vehi­
cle is due for an inspection, oil change or both,
the corresponding reminder Inspection due!,
Oil change due! or Oil change and inspection
due! will appear briefly after you switch the ig­
nition on/off.
Checking the service intervals
You can look up the distance and time remaining
until the next oil change and next service inspec­
tion. Select the following on the infotainment
system: IM EN u I button > Car > left control but­
ton > Servicing & checks > Service intervals.
Applies to: vehicles with flexible oil change serv­
ice

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On tyres with a directional tread pattern, note
the direction of rotation indicated on the sidewall
¢page 275.
Concealed damage
Damage to tyres and rims is often not readily visi­
ble. If you notice unusual vibrations or the car
pulling to one side, this may indicate that one of
the tyres is damaged. Reduce your speed imme­
diately. Inspect the tyres for damage. If no exter­
nal damage is visible, drive slowly and carefully
to the nearest qualified workshop and have the
car inspected.
A WARNING
Insufficient tread depth or different tread
depths on different wheels reduce safety. This
is particularly evident in vehicle handling,
when there is a risk of aquaplaning in deep
puddles of water and when driving through
corners. Braking is also adversely affected -
risk of accident!
Tyre pressure
cm) �
Audi
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Fig. 222 End face of driver's door: Sticker listing the tyre
pressures "'
00
The correct inflation pressures for tyres fitted at
the factory and for the compact temporary spare
wheel* are specified on a sticker. The sticker
¢Fig. 222 is on the end face of the driver's door.
@ Tyre size
@ Tyre pressure for the front wheels
© Tyre pressure for the rear wheels
(!) Tyre pressure if vehicle is partially loaded
@ Tyre pressure if vehicle is fully loaded
256 @
Tyre pressure for the compact temporary
spare wheel*
If you intend to drive the vehicle with a partial
load, adjust the tyre pressures to the specified
setting (D. Should you wish to drive with a full
load, you must increase the tyre pressure to the
specified maximum@ ¢&_.
Checking / adjusting the tyre pressures
"' Check the tyre pressures at least once a month
and, in addition, before starting a long journey.
.. The tyre pressures should only be checked
when the tyres are cold. The slightly raised
pressures of warm tyres must not be reduced.
.. Refer to the sticker ¢ Fig. 222 for the correct
tyre pressures according to the load the vehicle
is carrying.
.. If necessary, adjust the tyre pressure.
.. Vehicles with tyre pressure loss indicator* or
tyre pressure monitoring system*: Store the
new tyre pressures in the infotainment system
¢page 259.
"' Check the pressure of the spare wheel* /com­
pact temporary spare wheel*. Keep the spare
tyre inflated to the highest pressure approved
for the tyre.
A WARNING
Always adjust the tyre pressures to match
your driving style and the load the vehicle is
carrying.
- Excessive loads can cause you to lose control
of the vehicle -risk of accident!
- Under-inflated tyres flex more and can over­
heat at high speeds or when the vehicle is
carrying a heavy load. This could cause a
tyre blow-out and you could lose control of
the vehicle -risk of accident!
- Incorrect tyre pressures increase tyre wear
and adversely affect vehicle braking and
handling -risk of accident!
CD CAUTION
Replace any lost valve caps to prevent dam­
age to the tyre valves.

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Note
The tyre pressures and temperatures are not
shown in the display when the vehicle is sta­
tionary or during the initialisation phase. Hor­
izontal dashes--.--will appear instead of the
pressure and temperature figures.
(1) Loss of tyre pressure
Applies to: vehicles with tyre pressure monitoring system
If the indicator lamp RE appears, the tyre pres­
sure on at least one of the wheels is too low or
new sensors have not yet been initialised.
Indicator lamp [Bl lights up after switching
on the ignition
The tyre pressure is too low compared with the
reference value.
... Adjust the pressure of the relevant tyre(s) at
the next opportunity and store the pressures
¢page 261.
Indicator lamp [Bl lights up during a journey
Wheels with new sensors have not yet been ini­
tialised or the tyre pressure has reached a critical
level compared with the reference value.
... Avoid unnecessary braking and steering ma­
noeuvres.
... Adapt your driving style to the prevailing condi­
tions.
... As soon as you can do so safely, stop and check
the tyre(s).
... If it is possible to continue driving, you should
take the vehicle to a qualified workshop and
have the defective tyre(s) repaired or replaced
immediately.
A WARNING
Please observe the important safety informa­
tion and notes ¢page 260. Wheels
Storing new tyre pressures
Applies to: vehicles with tyre pressure monitoring system
To enable the tyre pressure monitoring system
to work reliably, it is important to store the cor­
rect pressure settings.
You should always store the tyre pressures if new
sensors are fitted or after changing the pressures
when carrying a different amount of passengers
or luggage.
... Before storing the new tyre pressures, check
that the current pressures on all four wheels
correspond to the specified values and adapt
the pressures to the current load ¢ page 256,
Fig. 222. Only adjust and store the inflation
pressure of the tyres when they are at approxi­
mately ambient temperature. If the tyre tem­
peratures are higher than the ambient temper­
ature, the inflation pressures should be in­
creased by approx. 0.2 bar above the pressures
specified on the tyre pressure sticker.
... Switch on the ignition.
... Select the following on the infotainment sys­
tem: I MENU I button > Servicing & checks >
Tyre pressure loss indicator > Store tyre pres­
sures > Yes, store now. The tyre pressure moni­
toring system will then measure the current
tyre pressures when you drive the vehicle and
store them as the new reference values .
... If the new tyre pressures do not appear on the
infotainment display, you will need to drive for
about 10 minutes so that the sensor signal
from the wheels can be received again .
During this initialisation phase,--.--will be
shown on the pressure and temperature display
and some functions of the tyre pressure monitor­
ing system will not be available. The system will
warn you only if the pressure of one or more tyres
is below the minimum reference pressure.
If the indicator lamp RE lights up and the mes­
sage Tyre pressure: wheel change detected.
Please check all tyres and store pressures in
MMI appears, the system has detected that the
sensor positions have changed because of a
wheel change or that new sensors have been fit-
ted. Store the new tyre pressures.
llll-
261

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and bulbs
Fuses and bulbs
Fuses Fuses in vehicle interior
Fig. 246 Area near steering column on LHD vehicle: Cover
Fig. 247 Open glove box on RHD vehicle: Cover
Access to the fuses is different on left-hand and
right-hand drive vehicles.
- LHD vehicles: The fuses are located behind a
cover near the steering column c::> Fig. 246.
- RHD vehicles: The fuses are located behind a
cover in the glove box c::> Fig. 247.
Changing fuses
To see whether a fuse has blown, check whether
the metal strip has melted.
Fig. 248 Engine compartment, left-hand side: Fuse cover
282 The
various electrical circuits are protected by
fuses. The fuses are located in the vehicle interior
and the engine compartment.
Fuses in vehicle interior
.,,. Switch off the ignition and all electrical equip­
ment .
... Refer to the following tables to identify the
fuse for the failed component c::> page 283 .
... Remove the cover: LHD vehicles c::> page 282,
Fig. 246 or RHD vehicles c::> Fig. 248 .
... Take the plastic clip from inside the fuse cover
in the engine compartment c::> Fig. 248 .
... Use the clip to pull out the fuse .
... Blown
fuses should always be replaced with a
fuse of the same rating .
.,,. Replace the cover.
Fuses in engine compartment
... Switch off the ignition and all electrical equip­
ment .
... Refer to the following tables to identify the
fuse for the failed component c::> page 284 .
... Release the fuse cover c::> Fig. 248 .
... Take
the plastic clip from inside the fuse cover
c::>Fig. 248 .
.,,. Use the clip to pull out the fuse.
.,,. Blown fuses should always be replaced with a
fuse of the same rating.
Colour coding for fuses
Colour Rating
in amperes
black 1
purple 3
light brown 5
brown 7.5
red 10
blue 15
yellow 20
white or transparent
25
green 30
orange 40

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WARNING
Never attempt to repair a fuse or replace a
blown fuse by fitting a fuse with a higher am­
pere rating. This could damage the electrical
system -risk of fire!
CD CAUTION
If a newly replaced fuse blows again after a
short time, the electrical system must be
checked by a qualified workshop as soon as
possible.
@ Note
- Unassigned fuse locations are not shown in
the tables below.
- Some of the items of equipment listed in
the tables below are only fitted on certain
models or are optional extras.
Fuses in vehicle interior
Fig. 249 Interior: Fuse layout
No. 1
Electrical equipment
Fl Control unit for soft top (Roadster)
F2 Control unit for soft top (Roadster)
F4 Central computer (MIB-2) No.
FS
F6
F7
F8 F9
FlO
Fll
F12
F13
F14
FlS
F16
F17
F18
F19
F20
F22
F23
F25
F26
F28
F29
F31
F32
F33
F34
F35
F36 Fuses
and bulbs
Electrical equipment
Gateway
Selector lever (for automatic gearbox)
Air conditioner console, relay coil for rear
window heating, tyre pressure monitoring
Switch for electro-mechanical parking
brake, light switch, rain/light sensor, inte-
rior lighting, anti-theft alarm system, di-
agnostic connector
Steering column switch module
Display
Haldex coupling
Infotainment components
Control unit for suspension control
Air conditioner blower
Electric steering column lock
Infotainment components, belt micro-
phone (Roadster)
Instrument cluster
Reversing camera
Control unit for convenience access
Electric lumbar support adjuster
Neck heating, passenger's side (Roadster)
Control unit for vehicle electrical system
(right side)
Door, driver's side (e.g. electric windows)
Seat heating
Media socket for AMI High
Control unit for vehicle electrical system
Control unit for vehicle electrical system
(left side)
Driver assistance systems
Airbag
Electrical socket relay, interior sound, re-
versing light switch, temperature sensor,
oil level sensor
Diagnostics, headlight range control, air
quality sensor, automatic anti-dazzle mir-
rors
Cornering light (right side)/ LED headlight
(right side)
283