check engine light AUDI TT COUPE 2020 User Guide

8S1012721BB
Checking and Filling




Coolant Freeze protec-
additive tion
Warm min. 40% min. -13 °F
regions max. 45% (-25 °C)
Cold min. 50% max. -40 °F
regions max. 55% (-40 °C)

@) Note
— Before the start of winter, have an author-
ized Audi dealer or authorized Audi Service
Facility check if the coolant additive in your
vehicle matches the percentage appropriate
for the climate. This is especially important
when driving in colder climates.
— If the appropriate coolant additive is not
available in an emergency, do not add any
other additive. You could damage the en-
gine. If this happens, only use water and re-
store the correct mixture ratio with the
specified coolant additive as soon as possi-
ble.
— Only refill with new coolant.
— Radiator sealant must not be mixed with
the coolant.
— Due to the risk of engine damage, the cool-
ing system should only be refilled by an au-
thorized Audi dealer or authorized Audi
Service Facility. An authorized Audi dealer or
authorized Audi Service Facility can also pro-
vide you with important information about
the recommended coolant additive.
Checking coolant

RAZ-0539


MIN

Fig. 173 Engine compartment - coolant expansion tank
(diagram): @) cover; @) markings
Observe the safety precautions > page 200, Gen-
eral information.
Checking the coolant level
> Park the vehicle on a level surface.
>» Switch the ignition off.
> Open the hood > page 201.
> Check the coolant level in the coolant expan-
sion tank > page 202, fig. 170 using the outer
markings @) > fig. 173. The coolant level must
be between the markings @) when the engine is
cold. When the engine is warm it can be slight-
ly above the upper marking.
Adding coolant
Requirement: there must be a residual amount of
coolant in the expansion tank >@.
If you must add coolant, use a mixture of water
and coolant additive. Mixing the coolant additive
with distilled water is recommended.
> Allow the engine to cool.
> Place a large, thick towel on the coolant expan-
sion tank cap.
>» Remove the cover () > fig. 173 carefully to the
left > A\.
» Add the correct mixture ratio of coolant
> page 206 up to the upper marking @)
> fig. 173.
> Make sure that the fluid level remains stable.
Add more coolant if necessary.
> Close the cap securely.
Coolant loss usually indicates that there is a leak.
Immediately drive your vehicle to an authorized
Audi dealer or authorized Audi Service Facility
and have the cooling system inspected. If the
cooling system is not leaking, coolant loss can re-
sult from the coolant boiling due overheating
and then being forced out of the cooling system.

Z\ WARNING
— The engine compartment in any vehicle can
be a dangerous area. Stop the engine and al-
low it to cool before working in the engine
compartment. Always follow the informa-
tion found in > page 200, General informa-
tion.
— Never open the hood if you can see or hear
steam or coolant escaping from the engine
compartment. This increases the risk of >


207

Checking and Filling


burns. The cooling system is under pressure.
When you no longer see or hear steam or
coolant escaping, you may open the engine
compartment with caution.
— When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of injury.
— Coolant additive and coolant can be danger-
ous to your health. For this reason, store the
coolant in the original container and away


from children. There is a risk of poisoning.

© Note
Do not add coolant if the expansion tank is
empty. Air could enter the cooling system and
damage the engine. If this is the case, do not
continue driving. See an authorized Audi deal-
er or authorized Audi Service Facility for assis-
tance.
Brake fluid

BFV-0229]


Fig. 174 Engine compartment: cap on brake fluid reservoir
Observe the safety precautions > A\ in General
information on page 200.
Checking the brake fluid level
>» Read the brake fluid level on the brake fluid res-
ervoir > page 202, fig. 170. The brake fluid lev-
el must be between the MIN and MAX markings
of.
The brake fluid level is monitored automatically.
Message
EG / © Brakes: stop vehicle and check
brake
fluid level
208
Stop the vehicle and check the brake fluid level.
See an authorized Audi dealer or authorized Audi
Service Facility for assistance.
Changing the brake fluid
Brake fluid should be changed at regular inter-
vals. Have the brake fluid changed by an author-
ized Audi dealer or authorized Audi Service Facili-
ty. The authorized Audi dealer or authorized Audi
Service Facility will inform you of the replace-
ment intervals.

Z\ WARNING
— If the brake fluid level is below the MIN
marking, it can impair the braking effect and
driving safety, which increase the risk of an
accident. Do not continue driving. See an au-
thorized Audi dealer or authorized Audi
Service Facility for assistance.
— If the brake fluid is old, bubbles may form in
the brake system during heavy braking. This
could impair braking performance and driv-
ing safety, which increases the risk of an ac-
cident.
— The brake fluid in your vehicle must meet
the standard VW 501 14 and is available at
an authorized Audi dealer or authorized
Audi Service Facility. If this brake fluid is not
available, another high-grade brake fluid of
equivalent quality may be used, and it must
meet
the U.S. Federal Motor Vehicle Stand-
ard (FMVSS) 116 DOT 4, Class 6.

@) Note
— If the brake fluid level is above the MAX
marking, brake fluid may leak out over the
edge of the reservoir and result in damage
to the vehicle.
— Do not allow any brake fluid to come into
contact with the vehicle paint, because it
will corrode the paint.
Electrical system
If the =z or fm] indicator light turns on, there is a
malfunction in the generator, the battery, or the
vehicle electrical system.

8S1012721BB
Checking and Filling

a Electric system: malfunction! Battery is not
being charged
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately. Turn off all un-
necessary electrical equipment because it will
drain the battery. See an authorized Audi dealer
or authorized Audi Service Facility if the battery
charge level is too low.
= Electrical system: low battery charge. Bat-
tery will be charged while driving
The starting ability may be impaired.
If this message turns off after a little while, the
vehicle battery has charged enough while driving.
If this message does not turn off, drive immedi-
ately to an authorized Audi dealer or authorized
Audi Service Facility.
Battery
Battery general information
Because of the complex power supply, all work on
batteries such as disconnecting, replacing, etc.,
should only be performed by an authorized Audi
dealer or authorized Audi Service Facility > A\.
Multiple batteries with different technologies
may be installed in your vehicle:
— Vehicle battery (for example, for starting the
engine, basic power supply) > page 210, Lead
battery or > page 210, Other battery types
— Auxiliary battery (for example, for recuperation
or optional equipment) > page 210, Other bat-
tery types
Not running the vehicle for long periods of
time
The battery will gradually drain if the vehicle
does not run for long periods of time. To ensure
that the vehicle can still be started, the electrical
equipment will be limited or switched off. Some
convenience functions, such as interior lighting
or power seat adjustment, may not be available
under certain circumstances. The convenience
functions will be available again when you start
the
engine.
Even when electrical equipment is switched off,
the equipment can still drain the battery if the
vehicle is not driven for long periods of time.
Deep draining results in a chemical reaction that
destroys the inside of the battery. The battery
must be charged every month to prevent this
= page 210. Contact an authorized Audi dealer or
authorized Audi Service Facility for more infor-
mation.
Winter operation
Cold weather places higher demands on the bat-
tery. This results in reduced starting ability. Have
the battery checked by an authorized Audi dealer
or authorized Audi Service Facility before cold
weather begins.

ZA WARNING
— All work on the battery or electrical system
in your vehicle can result in injuries, chemi-
cal burns, accidents, or burns. Because of
this, all work must be performed only by an
authorized Audi dealer or authorized Audi
Service Facility.
— Never connect the charging cable or jump
start cable directly to your vehicle battery.
Only use the connections in the engine com-
partment > page 210.

ZX WARNING
California Proposition 65 Warning:
— Battery posts, terminals and related acces-
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Wash hands after handling.
C@) Note
If the vehicle will be parked for long periods
of time, protect the battery against the cold
so that it will not be destroyed by “freezing”
= page 210, Charging the battery.

209

8S1012721BB
Checking and Filling

> Clamp the terminal clamps on the charger cor-
rectly onto the ground point ©) and the positive
terminal @).
> Insert the power cable for the charging device
into the socket and switch the device on.
> At the end of the charging process, switch the
charger off and pull the power cable out of the
socket.
> Remove the charging device terminal clamps.
> Close the cover on the positive terminal.
> Close the hood = page 201.

Z\ WARNING
— Never connect the charging cable directly to
your vehicle battery. Only use the connec-
tions in the engine compartment
=> page 210.
— A highly explosive mixture of gases can form
when charging batteries. Only charge the
battery in well-ventilated areas.
— A drained battery can freeze at tempera-
tures around 32 °F (0 °C). Do not charge or
use a frozen or thawed battery. If ice forms,
the battery housing can crack and battery
electrolyte can leak out, which increases the
risk of an explosion and chemical burns.
Contact an authorized Audi dealer or author-
ized Audi Service Facility for more informa-
tion.
— Do not connect or disconnect the charging
cable while charging because this increases
the risk of an explosion.

@ Tips
Read all of the manufacturer's instructions
for the charger before charging the battery.
Windshield washer
system

B4M-0135}


Fig. 176 Engine compartment: washer fluid reservoir cap
Follow the safety precautions > page 200, Gener-
al information.
The windshield washer reservoir <> contains the
cleaning solution for the windshield and the
headlight washer system*=> page 202, fig. 170.
The reservoir capacity can be found in
> page 263.
To reduce the risk of lime scale deposits on the
spray nozzles, use clean water with low amounts
of calcium. Always add window cleaner to the wa-
ter. When the outside temperatures are cold, an
anti-freezing agent should be added to the water
so that it does not freeze.
Message
gS Please add washer fluid
Fill the washer fluid for the windshield washer
system and the headlight washer system* when
the ignition is switched off.
® Note
— The concentration of anti-freezing agent
must be adjusted to the vehicle operating
conditions and the climate. A concentration
that is too high can lead to vehicle damage.
— Never add radiator anti-freeze or other addi-
tives to the washer fluid.
— Do not use a glass cleaner that contains
paint solvents, because this could damage
the paint.
211

8S1012721BB
Wheels


driver is responsible for having the tires in-
flated to the correct pressure.
— Do not change the tire pressure when the
temperature of the tire is extremely high.
This could result in serious damage to the
tire and even cause the tire to burst, increas-
ing the risk of an accident.
— A tire with low pressure flexes more. This
heats the tire up too much. This could cause
the tread to separate and even cause the tire
to
burst, increasing the risk of an accident.
— The tire pressure monitoring system does
not warn about damage or defects in the
tire construction that could cause the tire to
burst, for example. Inspect your tires regu-

larly.

@) Tips
—If tires are replaced, the sensors and valves
do not need to be removed or replaced. Only
replace the valve stem and, if necessary, the
valve and the wheel electronics. If you have
questions, see an authorized Audi dealer or
authorized Audi Service Facility.
— An incorrect display or a malfunction in the
tire pressure monitoring system can occur
after using the tire mobility kit. Have the
sensors replaced by an authorized Audi
dealer or authorized Audi Service Facility.
— For an explanation on conformity with the
FCC regulations in the United States and the
Industry Canada regulations, see
=> page 260.
Displaying tire pressures and temperatures
Applies to: vehicles with tire pressure monitoring system
Requirement: you must be driving the vehicle.

> Select in the Infotainment system: [MENU] but-
ton > Service & checks > Tire pressure monitor-
ing > Display tire pressure.

The current tire pressures are shown in green,
yellow or red numbers in the Infotainment sys-
tem:
— Green: the current tire pressure and the speci-
fied tire pressure are approximately the same.
— Yellow: the current tire pressure is lower than
the specified tire pressure.
— Red: the current tire pressure is much lower
than the specified tire pressure.
The specified tire pressure is the last tire pressure
that was stored > page 234.
Note
that the tire pressure also depends on the
temperature of the tire. The tire pressure increas-
es as the engine becomes warmer while driving.

ZA WARNING
Read and follow the important information
and notes > page 232.
G) Tips
The tire pressure or temperature is not dis-
played while the vehicle is stationary and in
adaptation mode. Dashes --.-- are shown in
place of the pressure and temperature.
COW ice este ory
Applies to: vehicles with tire pressure monitoring system

If the @ indicator light turns on, the pressure in
at least one tire is too low or new sensors were
not adapted:
@ indicator lights turns on after turning the
ignition on
The tire pressure is too low compared to the
specified pressure.
> Check and store the tire pressure(s) the next
time it is possible > page 234.
@ indicator light turns on while driving
Wheels with new sensors were not adapted or
the tire pressure has reached a critical level com-
pared to the specified pressure.
> Avoid unnecessary steering and braking maneu-
vers.
> Adapt your driving style to the situation.
> Stop as soon as possible and check the tire(s).
> If it is possible to continue driving, see an au-
thorized Audi dealer or authorized Audi Service
Facility immediately and have your tire(s) re-
paired or replaced.
233

Fuses and bulbs

Fuses and bulbs > Remove the fuse panel cover > fig. 199.
> Remove the plastic clip from the fuse panel
Fuses cover > fig. 199.
ae > Remove the fuse using the clip.
> Replace the blown fuse only with a fuse that
has the same amp rating.
Fuse color identification









Color Current rating
in amps
Black 1
Purple 3
Light brown 5
Brown 7:5
Red 10
Blue 15
Yellow 20
White or transparent [25
Green 30
Orange 40
Z\ WARNING
Fig. 199 Left side of the engine compartment: fuse cover Do not repair fuses and never replace a blown
fuse with one that has a higher amp rating.
A fuse that has blown will have metal strips that This can cause damage to the electrical sys-
have burned through. The fuses are located in the tem and a fire.
interior and in the engine compartment.
@) Note
If a new fuse burns out again shortly after you
Fuses in the interior
> Switch the ignition and all electrical equipment have installed it, have the electrical system
off. checked as soon as possible by an authorized
» Check the following table to see which fuse be- Audi dealer or authorized Audi Service Facili-
longs to the equipment > page 253. ty.
> Remove the cover > fig. 198.
> Remove the plastic clip from the fuse panel Gi) Tips
cover in the engine compartment © fig. 199.
> Remove the fuse using the clip.
> Replace the blown fuse only with a fuse that
has the same amp rating.
> Install the cover.
— The following table does not list fuse loca-
tions that are not used.
— Some of the equipment listed in the follow-
ing tables applies only to certain model ver-
sions or certain optional equipment.
Fuses in the engine compartment
> Switch the ignition and all electrical equipment
off > A\.
> Check the following table to see which fuse be-
longs to the equipment > page 254.
252

8S1012721BB


EDL
refer to Electronic Differential Lock...... 105
EDR
Event Data Recorder.... 2.0.0. ccceua es 255
Electrical systeM .. 6... cee eee 208
Electromechanical parking brake.......... 77
Electronic Differential Lock.............. 105
Electronic immobilizer................... 19
Electronic Stabilization Control (ESC) ...... 105
Indicator light... 2... eee ee eee eee 17
Sporttnode sexx ss wees cv een y s oR os Be 106
Emergency assistance.................. 241
Emergency braking function.............. 77
Emergency flashers..............--00 eee 38
Emergency fueling...............000005 198
Emergency operation
DOOrs .. 0... eee eee 23
Fuel fillerdoOr's = s sees =e aeme + naewe 3 oe 199
Luggage compartment lid........... 25,26
Power top... ... ee eee eee eee eee 33
Emergency release
SGlECtOr leVEluis ¢ < seme 7c Hees 3D Ree YB 86
Emissions control system ...........000- 199
Energy consumers.........---0-s eee eeee 15
Energy management.............-..05- 110
Engine
Breaking in.......... 0c cece cece eee 74
CoOlafitiwcy: sy wows s ¥ sews Gy new ee Ree FE 206
JUMP SEALING « cise + cence so wave ve meren s 247
Starting
Starting and stopping.................. 76
Engine compartment
Opening and closing the hood.......... 201
Overview... .. cece eee ee eee
Safety precautions...
Engine control (indicator light)............ 17
Engine data
refer to Sport displays.................. 15
Engine oil
AQGING coon ¢ cows s news 2 y ews be ews 97 203
Changing......... cee eee eee eee 205
Checking oillevel...............00002. 203
Consumption s ¢ sce s + eeme s+ eee 5 ones 203
Indicator light..............00-.000 ee 203
Replacement interval...............0. 212
Temperature display.............-...0- 15
Enhanced VieW sae < » seme 2 2 gee = yaees < Be 13
Entering characters/numbers (speller) ..... 117
Entering
letters (speller)................ 117
Environment
Unleaded gasoline.................00. 195
ESC
refer to Electronic Stabilization
Control: (ESC)’s s » cas ¢ s yom « uses x ree 105
ESP
refer to Electronic Stabilization
ComtroOCES Qs. « «enzo 0 ssemane « 0 muagons « oxen 105
Event Data Recorder (EDR).............. 255
Exteriomlighting’s os cssai se enum s wenn © ¥ isan 36
Exterior mirrors
Adjusting... 0.0... . cece eee eee eee 40
Dimming ......... 00 cece cece eee 40
Folding:settingS cis + ¢ sea ss sees ee eee e ee 23
FCAT & census 2 © ceanesn 2 om renme © uncon wo eee 40
External voice operation................ 128
FE
Factory default settings (MMI)........... 190
Fader (SOUND) cw + aaron o 2 yoo & & meee 8c eo 193
Fast forwarding and rewinding (audio/video
FIO) sciooe 2 x seevae wo exeavce os eunnens vv eonuene ve sete 178
Fast forwarding (audio/video file)......... 178
FaStHOUtE + sees x = cere x 2 see 4 2 awa 9 8 eS 156
Favorites
Medias: « 3 scien « o nae 2 & aonene so omar 2 2 aves 180
Navigation... ..... 0... cece e eee eee 151
Telephone es < = sees ¢ = wen ee ees eg eee 135
Federal Communications Commission (FCC) . 260
File formats (media drives) .............. 183
Fog lights/rear fog light(s)............... 36
Folding the rearseats........ 0.00. e eee 66
Footwell lightingjess + sass © snare is w sense a x a 39
For the sake of the environment
Disposing of engine oil................ 205
FUCLINGl: = = wavs: ¢ ¢ same xv cee os eee sx 196
ES) eee ee 201
Free text'search casi se cas + were « + emo x 119
Media... 2... eee 180
Navigation ..... 0.00... 0c eee eee eee 150
RadiO:wsss = ¢ pews = ¢ eee + © ees pc eee zee 166
TELE PROM ccesie cosaves wo eneuwue © comes © @ cose 139
Freeze protection
Coolant... 0.6... cee eee eee eee 206