engine overheat AUDI TT COUPE 2016 Owners Manual

Downloaded from www.Manualslib.com manuals search engine Instruments and indicator lights
Instruments and indicator Lights
Instruments
Audi virtual cockpit (instrument cluster)
The instrument cluster is the central information center for the driver.
Fig. 3 Instrument cluster overview
(!) Engine coolant temperature
@ Driver information system ..... .
@ Fuel level .. ................. .
@ Trip odometer reset knob ...... .
Coolant temperature indicator
The coolan t temperature display~ page 8,
8
19
8
23
fig. 3 (!)only functions when the ignition is
switched
on. T o prevent engine damage, please
observe the following notes about the tempera­
ture ranges.
Cold range
If o nly the LEDs in the left area of the gauge turn
on, the engine has not reached operating tem­
perature yet. Avoid high engine speeds, full ac­
celerating and heavy engine loads.
Normal range
The engine has reached its operating tempera­
ture once the LEDs up to the center of the gauge
turn on under normal driving conditions . The
LEDs farther to the right may turn on if the en­
gine is under heavy load or the outside tempera­
ture is high. This is no cause for concern as long
8
as the. indicator light in the Infotainment dis­
play does not turn on. If the red LED in the rig ht
s ide of the display and the. indicator light in
the d isplay turn on, the coolant temperature is
too high ~page 12.
CD Note
-Auxi lia ry headlights and other ac cessories in
front of the cooling-air intake impair th e
cooling
effect o f the coolant. T his increases
the risk of the engine overheating during
high
outside temperatures and heavy en­
gine load.
- T
he front spoiler also helps to distribute
cooling air correctly while driving. If the
spoiler is damaged, the cooling effect will
be impaired and the risk of the engine over­
heating will increase . See an authorized
Audi dealer or authorized Audi Service Fa­
c ility
for assist ance.
Fuel level
The indicator@ only funct ions when the ignition
i s sw i
tched on. If the fuel level drops below 1.9
gal (7 L), the left LED will light up red and the~ .,.

Downloaded from www.Manualslib.com manuals search engine indicator light will turn on ¢page 16. The bot­
tom LED blinks red when the fuel level is very
low.
The
fuel tank capacity of your vehicle is listed in
the Technical Data section¢ page 299.
0 Note
Never drive until the tank is completely emp­
ty.
The irregular suppl y of fuel that results
from that can cause engine misfi res. Uncom­
busted fuel will then enter the exhaust sys­
tem. Th is can cause overheating and damage
to the catalytic converter.
Indicator Lights
Description
The indicator lights in the instrument cluster
blink or turn on. They indicate functions or mal­
functions.
Wit h some ind icator lights, messages may ap­
pear and warning signals may sound. The indica ­
tor lights and messages in the display can be cov­
ered by other displays. To show them again, se­
lect the tab for the indicator lights and messages
using the multifunction steering wheel
¢page 19. If there are several malfunctions,
you can display them one at a time using the
thumbwheel.
Some indicators lights in the display can turn on
in several colors.
Overview
Some indicator lights turn on briefly as a function
check when you switch the ignition on. These sys­
tems are marked with a./ in the following tables.
I f
one of these indicator lights does not turn on,
there is a malfunction in that system.
Red indicator lights ~~~~~~~~~~~~~~-
US A models:
Brake system
¢page 11
Instruments and indicator lights
Canada models:
Brake system
¢page 11
USA models:
Electromechanical parking brake
¢page 12
Canada models:
Electromechanical parking brake
¢page 12
Cooling system
¢page 12
Engine oil pressure
¢ page 13
Alternator
¢page 13
Engine stop while driving
¢page 13
Front safety belt
¢page 13
Electromechanical steering ./
¢ page 90
Steering lock
¢page 13
Central indicator light
¢page 14
Engine start system
¢page 14
USA models:
Speed warning system*
¢page 72
Canada models:
Speed warning system*
¢page 72
Transmission malfunction
¢page 70
Rear spoiler
¢page 91
Yellow indicator lights
USA models: safety systems ./
¢page 15
Canada models: safety systems ./
¢page 15
9

Downloaded from www.Manualslib.com manuals search engine Instruments and indicator lights
PARK/(®l/~ Electromechanical parking
brake
If the -(USA models) I. (Canada models)
indicator light turns on, the parking brake was
set.
-(USA models) /. (Canad a models) Park­
ing brake: caution! Vehicle parked t o o steep
If the indicator light blinks and the message ap­
pears, there is not enough braking power to se­
cure
the vehicle. The brakes have overheated. The
vehicle could roll away even on a
small incline .
-
(USA mode ls) I. (Canada models)
Please press brake p edal to re lease parking
brake
T o release the park ing brake, press the brake
pedal and press the Iii button at the same time,
or start driving with hill start assist¢ page 62,
Starting from a stop.
llJ Parking brake: malfunction! See owner's
manual
There is a malfunction in the parking brake. Drive
to an authorized Audi dealer or authorized Audi
Service Facility
immediately to have the malfunc­
tion corrected.
Im Parking brake: malfunction! Safe ly stop ve­
hicle . Please contact Service
There is a malfunction
in the parking brake. Drive
to an authorized Audi dealer or authorized Audi
Serv ice Facility i
mmediately to have the malfunc­
tion corr
ected.
llJ;!:t:)jJJJ~ (USA models) I Im (Canada models)
Please release parking brake.
Release the parking brake if this message ap­
pears.
!f1;!:t:l;fJJj (USA mod els) I K@j (Canada models)
Park ing brake auto release unavailable
If this message appears, press the brake pedal
first and then release the parking brake.
llJ;!:t:)j(13~ (USA models) I Im (Can ad a models)
Parking brake: caution! V ehicle parked too
steep
12
If the indicator light blinks and the message ap­
pears, there is not enough braking power to se­
cure
the vehicle. The brakes have overheated. The
vehicle could roll away even on a
small incline.
11;1;!:t:ljtJ:O ( U SA models) I [@j (C anada models)
Park in g brake: applied
If this message appears, press the brake pedal
first and then release the parking brake if neces­
sary.
(D Tips
For additional information on the parking
b rake,
refer to ¢page 61.
- L Cooling syste m
• Turn off engine and check coolant level
T he coo l
ant level is too low.
Do not continue driving and switch the engine
off. Check the coolant level ¢ page 242.
-If the coolant level is too low, add coolant
¢page 242. Only continue driving once the in­
dicator light turns off.
• Coolant temperature: too high. Let eng ine
run with vehicle stationary
Let the engine run at idle for a few minutes to
cool off, until the indicator light turns off.
-
If the indicator light does not turn off, do not
conti nue driving the vehicle. See an authorized
Audi dealer or authorized Audi Service Facility
for assistance.
A WARNING
[.=-
-Never open the hood if you can see or hear
steam or coolant escaping from the engine
compartment. This increases the risk of
burns. Wait until you no longer see or hear
steam or coolant escaping.
- The
engine compartment in any vehicle can
be a
dangerous area. Stop the engine and
allow it to cool before working in the engine
compartment. Always follow the informa­
tion found in ¢page 236, Working in the
engine compartment.

Downloaded from www.Manualslib.com manuals search engine ..... N
a:
@ Tips
For additional information on ESC and ABS,
refer to ¢page 87.
BRAKE! .. (USA models) I rl] (Canada models)
Brake pads!
If the warning light turns on, immediately con­
tact your authorized Audi dealer or authorized
Audi Service Facility
to have all brake pads in­
spected . Both sets
of brake pads on an axle must
always be replaced at the same time.
A WARNING
Driving with bad brakes can cause a collision
and serious personal injury.
-
If the rl] warning light or the .. warning
light l) with the message Brake pads!
comes on in the instrument cluster display,
immediately contact your authorized Audi
dealer
or authorized Audi Service Facility to
have all brake pads checked or replaced if
necessary.
ffl;f !f Safety systems
-1
The II (USA models) Im (Canada models) indi­
cator
light monitors the safety systems.
Safety system
If the II (USA models) Im (Canada models) in­
dicator
light turns on or blinks, there is a mal­
function in a safety system.
Drive
to an authorized Audi dealer or authorized
Audi Service Facility immediately
to have the
malfunction corrected.
A WARNING
-Have the safety systems inspected immedi-
ately. Otherwise, there
is a risk that the sys­
tems may not activate during a collision,
which increases
the risk of serious injury or
death.
co ..... .....
:=: 1) - : USA models only
Instruments and indicator lights
~ Engine control
If the II indicator light turns on if there is a mal­
function in
the engine control.
Drive slowly
to an authorized Audi dealer or au­
thorized Audi Service Facility
to have the engine
checked .
o System indicator light (MIL)
The system indicator light (MIL) is part of the On
Board Diagnostic system (OBD II). The ¢.j sym­
bol turns on when the ignition is switched on and
turns
off again once the engine is started and
running
at a steady idle speed. This indicates that
the MIL is functioning correctly.
The indicator
light turns on if there is a malfunc­
tion in the engine electronics. See an authorized
Audi dealer or authorized Audi Service Facility
to
have the malfunction corrected.
For additional
information, refer to¢ page 17.
!?\Engine speed limitation
Applies to vehicles wit h en gi ne speed lim itation
(I! Maximum engine speed: XXXX rpm
The engine speed is automatically limited to the
speed displayed in the driver information system.
This protects
the engine from overheating.
The engine speed
limitation deactivates once the
engine is no longer in the critical temperature
range and you have released the accelerator ped­
al once.
If the engine speed limitation was activated by
an engine
control malfunction, the II indicator
light also turns on. Make sure the engine speed
does
not go above the speed displayed, for exam­
ple when downshifting. Drive
to an authorized
Audi dealer or authori z
ed Audi Service Facility im­
mediately to have the malfunction corrected.
~ Engine oil level (min.)
II Please check oil level
15

Downloaded from www.Manualslib.com manuals search engine @ Tips
-Determine the depth before driving through
water.
-Do not stop the vehicle, drive in reverse or
switch the engine off when driving through
water.
- Keep in mind that oncoming vehicles may
create waves that raise the water level and
make it too deep for your vehicle to drive
through safely.
- Avoid driving
through salt water (corrosion).
Economical and environmentally-friendly
driving
The amount of fuel consumption, the envi ron­
mental impact and the wear to the engine,
b rakes and tires depends mostly on yo ur driving
style. Wit h
an anticipatory and economic driv ing
style, fu
el consumption can be reduced by ap­
proximately 10-lSo/o. The following tips will help
you conserve the environment and your money at
the same time.
Anticip atory driv ing
A veh icle uses the most fuel when a ccele rating.
When you drive with anticipation, you do not
need to brake as often and thus acce lerate less.
When possible, let your vehicle coast with a gea r
engaged -for example, when you notice that the
next traffic light is red.
Avoid full acceleration
You should rarely travel at the maximum vehicle
speed. High speeds cause a disproportionately
high increase in fuel consumption, emissions and
traffic noise. Slower driving saves fuel.
Reduce idling time
It pays off to stop the engine, for example when
at railroad crossings or traffic lights with longer
red lights. Stopping the engine for 30-40 sec­
onds already saves more fuel than the amount of
extra fuel needed to restart the engine.
It takes a very long time in idle to warm the en­
gine up to operating temperature. Wear and
emissions are especially high in the warm-up
Driving
phase. Therefore, you should begin driving im­
mediately after starting the engine. Avoid high
RPMs while doing this.
Service regularly
By servic ing you r vehicle regularly, you can help
to reduce fuel consumption before you even start
to drive . The maintenance condition of your vehi­
cle not only affects traffic safety and long-term
val ue b ut also impacts fuel co nsumptio n.
A poorly serviced engine can lead to fuel con­
sumption that is 10% higher than normal.
Also check the oil level when refueling. The oil
con sumpti on
depends largely on the engine load
and speed. It is no rmal for the oil consumption
of a new engine to reach its lowest point only af­
ter a certain amount of use. Therefore, the oil
consumption can only be properly judged after
approximately 3,000 mi (5,000 km) have been
driven.
Avoi d short trip s
The engine and exhaust cleaning system must
reach their optimal operating tempera tu re to ef­
fectively reduce consumption and emissions.
A cold engine consumes a disproportionately
high
amount of f u el. The engine is at operating
temperature and consumption has normalized
only after approximately four kilometers.
Q) Note
Do not leave engine idling unattended after
starting. If warning lights should come on to
indicate improper operation, they would go
unheeded. Extended idling also produces
heat, which could result in overheating or
other damage to the vehicle or other proper­
ty.
CD Note
-Have your vehicle maintained properly and
in accordance with the service recommenda­
tions in your Warranty & M ain tenance book-
let. Lac k of proper mai ntenance as well as
improper use of th e vehi cle w il l impair the
function of the emission control system and
cou ld lead to damage. .,..
57

Downloaded from www.Manualslib.com manuals search engine Starting on a hill
.. Set the parking brake.
.. With the driving gear selected, press the accel­
erator pedal carefully. The parking brake will
re l
ease automatically if your safety belt is fas­
tened.
Under certain circumstances, such as driving in
the mountains, it may be useful to switch tempo­
rarily
to the manual shift program in order to
manually adjust the gears to the driving condi­
tions¢ page 68.
When parking on a level surface, simply place the
selector lever in the P position. On inclines, acti­
vate the parking brake first and then move the
selector lever to the P position ¢ page 61. This
prevents the loc kin g mechanism from being
loaded too heavily and will make it easier to
move the selector lever out of the P position.
A WARNING
-The vehicle can roll even when the engine is
switched off.
-Unintended vehicle movement can lead to
serious injuri es.
- Never leave
your vehicle with the engine
running while in gear. If you must leave
your vehicle when the engine is running , set
the parking brake and move the selector lev­
er to the P position.
- Power is still
transferred to the wheels
when the engine is running at idle. To pre­
vent the ve hicle from "creeping", you must
keep your foot on the brake when the en­
gine is running and the selector lever is in
the D, Sor R position or "tiptronic" mode is
selected.
-Do not inadvertently press the accelerator
pedal when the vehicle is stationary. Other­
wise the vehicle will start to move immedi­
ately, even if the parking brake is set. T his
could resu
lt in a crash.
-
Do not press the accelerator pedal when
changing the selector lever position while
the vehicle is stationary and the engine is
running .
Automatic transmission
-Never engage the R or P selector level posi­
tions while driving. It could cause a crash .
- Before driving
down a steep slope, reduce
your speed and shift into a lower gear with
"ti ptronic".
-Do not ride the brakes or press the brake
pedal too often or too long when driving
down a hill. Constant braking causes the
brakes to overheat and substantially re­
duces braking performance, increases brak­
ing
distance or causes complete failure of
the brake system.
-If you must stop on an incline, always hold
the vehicle in place with the foot brake or
parking brake to prevent it from rolling
back.
- N
ever hold the vehicle on an incline with a
slipping clutch. The
clutch opens automati­
cally when it becomes too hot from the
overload. The mJ indicator light turns on
and a message appears¢ page 70 when
the clutch is overloaded.
-If the engine must run while you are work­
ing
in the engine compartment with the
hood open, make sure a gear is not engag­
ed. The selector lever must be firmly in the
P position and loc ked in place and the park­
ing brake must be set¢ page 236. Other­
wise, the vehicle could begin moving when
increasing the engine speed, even with the
parking brake set.
@Note
-When stopping on an incline, do not try to
hold the veh icle in place by pressing the ac­
celerator pedal while a driving gear is se­
lected. This can cause the automatic trans­
mission to overheat and can damage it. Ac­
tivate the parking brake or press the brake
pedal to prevent the vehicle from rolling.
- Allowing
the vehicle to roll when the engine
is stopped and the selector lever is in the N
position will
damage the automatic trans­
mission because it is not lubricated under
those circumstances.
67

Downloaded from www.Manualslib.com manuals search engine Automatic transmission
-The transmission can overheat and be dam­
aged under certain driving and traffic condi­
tions such as frequent starts, creeping for a
l
ong time, or stop-and-go traffic. When the
@]or. indicator light turns on, stop the
vehicle at the next opportunity and let the
transmission cool r::!;> page 70.
- Allowing the veh icle to roll when the engine
is stopped will damage the S troni c trans­
mission because it is not lubricated
r::!;> page 290, Towing with a tow truck.
@ Tips
For
safety reasons, the parking brake is re­
leased automatically only when the driver's
safety belt is engaged i n the buckle.
Hill descent control
The hill descent control system assists the driv­
ing when driving down declines .
Hill descent control is activated when the selec­
tor lever is in the Dor S position and you press
the brake pedal. The transmission automatically
selects a gear that is suitable for the incline. Hill
descent control tries to maintain the speed ach­
ieved at the time of braking, within physical and
technical
limitations. If may still be necessary to
adj ust the speed with the brakes. Because hill de­
scent control cannot shift down farther than 3rd
gear, it may be necessary to shift into tiptronic
mode in very steep areas. In this case, shift into
1st or 2nd gear in tiptronic mode to use the en­
g ine 's braki ng force to relieve the brakes.
Hill
descent control switches off once the decline
levels
out or you press the accelerator pedal.
On vehicles with a cruise control system*
r::!;> page 72, hill descent control is also activated
when the speed is set.
A WARNING
Hill descent control cannot overcome physical
limitations,
so it may not be able to maintain
a
constant speed under all conditions. Always
be ready to apply the brakes.
68
Shifting manually (tiptronic mode)
The tiptronic allow the driver to shi~ the gears
manually.
Fig. 66 Center conso le : ma nua l shifting with the selector
lever
Fig.
67 Steer ing whee l: ma nual shifting with the shift pad­
dles•
Shifting with the selector lever
You can shift into tiptronic mode while stationary
and while dri ving.
""To shift into tiptronic mode, push the selector
lever from
the D/S setting to the right in the
tiptronic shift gate. Once the transmission has
switched modes, the selector lever position M
is shown in the Infotainment system display
r::!;>poge 64, fig. 63. For example M4 means the
fourth gear is engaged.
""To shift up a gear, tap the selector lever for­
ward G ¢fig. 66.
""To shift down a gear, tap the selector lever to
backQ.
Shifting with the shift paddles*
You can operate the shift paddles in the D/S or M
(tiptronic shift gate) selector lever positions.
""To shift up one gear, tap the shift paddle G
r::!;> fig. 67.

Downloaded from www.Manualslib.com manuals search engine Intelligent Technology
-Only apply the brakes for the purpose of
cleaning the brake system when road and
traffic conditions permit. You must not en­
danger other road users. This increases the
risk of an accident.
-
On steep slopes, reduce the speed and se­
lect a lower gear or lower selector lever po­
sition . Drive
as little as possible while press­
ing the brake pedal and avoid putting your
left foot on the brake pedal while driving.
This could
cause the brakes to overheat and
impair the efficiency of the brakes.
-
Do not let the brakes "grind" by always
keeping
your foot on the brake pedal. This
can
cause the brakes to over heat, increase
wear and increase brak ing distance u nneces ­
sari ly.
-
Certa in weather and operating cond it io ns
such as driving through water, driving in
heavy rain or driving after washing your ve­
hicle
can impair the effectiveness of the
brakes. In the winter, ice may build up on
the brake pads, rotors and drums. Check
these components by braking carefully. Ap­
plying
the brakes carefully several times
dries the brakes and removes ice build-up.
- The efficiency
of the brakes can also be im­
paired by driving
for long stretches on roads
covered with salt without using the brakes.
You can remove salt deposits from the
brake rotors and pads by carefully applying
the brakes several times.
-If the front spoiler is damaged or you install
another spoiler, make sure the front wheel
brakes are ventilated properly. Otherwise,
the brake system could overheat, wh ic h re ­
duces
thei r effectiveness.
- Failure
of a brake circuit impairs braking
performance, which increases braking dis­
tance.
Avoid driving the vehicle and have it
towed it to the nearest authorized Audi
dealer or authorized Audi Service Facility.
- Never
let the vehicle roll while the engine is
stopped because this increases the risk of an
accident.
-
If the brake booster is not working, you will
have
to press much harder on the brake
90
pedal to compensate for the lack of the
booster.
@ Note
-Never let the brakes "rub" by pressing the
pedal lightly when braking is not really nec­
essary. This
causes the brakes to overheat
and increases braking distance and causes
wear.
- Before driving a long
distance on a steep
slope, decrease your speed and select a low­
er driving gear. This makes use of the en­
gine braking effect and relieves the brakes.
If you need to brake additionally, brake in
interva ls and not continuously.
(D Tips
-Ifthe brake booster is not work ing, you
must press the brake pedal w ith much more
force than normal.
-
If you retrofit your vehicle with a front spoil­
er wheel covers or similar items, make sure '
that the air flow to the front wheels is not
interrupted. Otherwise the brake system
can become too hot.
Electromechanical
steering
The electromechanical steering supports the
driver's steering movements.
Power steering adapts electronically based on
the vehicle speed.
Indicator lights and messages
• Steering: malfunction! Please stop vehicle
If this indicator light turns on and stays on and
this message appears, the power steering may
have failed.
Stop the vehicle in a safe location as soon as pos­
sible.
Do not continue driving. See an authorized
Audi dealer or authorized Audi Service Facility for
assistance.
i:t-D Steering: malfunction! You may continue
driving

Downloaded from www.Manualslib.com manuals search engine ..... N
G: CX)
.....
"' U"I
.....
"' .....
.. Guide the reserve canister filler tube into the
funnel and start the emergency fueling.
.. Remove the funnel after refueling and close the
fuel filler door so that it latches shut.
CD Note
Remove any overflowing fuel from the ve hicle
paint immediately.
Fuel filler door emergency release
If the fuel filler door lock is faulty, the fuel filler
door con be unlocked manually.
Fig. 181 L uggage compa rtment: cover in t he r ight side
t
rim panel
.,.. Open the luggage compartment lid.
.. L ift the cargo floor .
"'
"' 0 0
it IIl
.,.. Loosen the strap from its holde r and pull on it
carefu lly Qfig. 181.
Catalytic converter
It is very important that your emission control
system (catalytic converter) is functioning prop­
erly to ensure
that your vehicle is running in on
environmentally sound manner.
.,.. Always use lead-free gasoline Q page 231, Gas­
oline grade .
.. Never run the tank down all the way to empty.
.. Never put too m uch motor oil in your engine
Q page 240, Adding engine oil "t::r..
.. Never try to push-or tow-start your vehicle.
The
catal ytic converter is an efficient "clean-up"
device built into the exhaust system of the vehi­
cle. The catalytic
converter burns many of the
pollutants in the exhaust gas before they are re­
leased into
the atmosphere .
Checking and Filling
The exclusive use of unleaded fuel is critically im­
portant for the life of the catalytic converter and
proper functioning of the engine.
A WARNING
f= - I
The temperature of the exhaust system is
high, both when driving and after stopping
the engine.
- Never
touch the exhaust tail pipes once they
have become hot. This could result in burns.
-Do not park or operate the vehicle in a reas
where the hot exhaust system may come in
contact with dry grass, brush, fuel spill or
other material which can cause a fire .
-
Do not appl y additional undercoating or
r ustproofing on or near the exhaust mani­
fold, exhau
st pipes, catalytic converter or
heat shields. During driving, the substance
used for un dercoating could overheat and
cause a fire.
CD Note
-Be aware that just one tank filli ng with
leaded fuel w ill already seriously degrade
the performance of th e c atalytic converter .
-
Do not exceed the correct engine oil leve l
Qpoge240 .
-Do not drive until the fuel tank becomes
completely empty. The engi ne could mis­
fire. Unbu r
ned fuel coul d also get into the
exhaust system and this could cause the
ca ta lyt ic co nver ter to overheat.
-Do not swi tch off the ignition whil e the vehi ­
cl e is moving .
-
Do not continue to operate your vehi cle un­
der these condi tions, as o therwise fuel c a n
reach the catalytic converter. This could re­
sult in over heating of the converter, requir­
ing
its replacement .
- T o assu re
effic ient operatio n of the E mis ­
sion Contro l System:
-Have your vehicle maintained properly and
in accordance wi th the service recommen­
dations in yo ur Warranty & Main tenance
bookle t.
- L ack
of proper maintenance as well as im-
p r
oper use of the veh icle w ill impair the .,..
235

Downloaded from www.Manualslib.com manuals search engine Checking and Filling
@) For the sake of the environment
-Before changing your oil, first make sure
you know where you can properly dispose of
the used oil.
- Always
dispose of used engine oil properly.
Do not dump it on garden soil, wooded
areas, into open streams or down sewage
drains.
- Recycle
used engine oil by taking it to a used
engine oil collection facility in your area, or
contact a service station.
Coo Ling system
Coolant
The engine coolant performs two functions: it
keeps
the engine from overheating and it pro­
tects the engine from freezing in the winter.
The cooling system is sealed and generally re­
q uires
little attention.
The cooling
system has been filled at the factory
with a
permanent coolant which does not need to
be changed. The coolant consists of a mixture of
specially conditioned water and the manufactur­
er's glycol-based coolant additive G13 antifreeze
with anticorrosion additives (50% for USA mod­
els; 60% for Canadian models). This mixture
both assures the necessary frost protection and
protects metal components in the engine's cool­
ing
system from corrosion and scaling. It also
raises
the boiling point of the coolant.
Do not reduce the concentrat ion of the coolant in
the summer by addi ng p la in water. The propor­
tion of coolant additive must be at least 50°/o
but not more than 60°/o to maintain antifreeze
protection and cooling efficiency. If the coolant
frost protection is too low, the coolant could
freeze and damage the vehicle heating and en­
gine cooling system.
For year-round driving,
antifreeze is added at the
factory for temperatures down to:
- -
31 °F ( -35 °C) USA
- -40 °F ( -40 °C) Canada.
242
If you must add coolant, use a mixture of water
and coolant additive. Mixing the coolant additive
with distilled
water is recommended.
A WARNING
~ h . Before you check anything in t e engine com-
partment, always read and heed all WARN­
INGS C)page 236.
CD Note
-Before winter sets in, have the coo lant
checked to see if the coolant additive in you r
vehicle is
sufficient to meet the climate con­
d itions. This is especia l
ly important if you
live
in a regio n where the winter is extre m e­
ly cold . If necessary, increase the proportion
o f coo la
nt ad ditive to 60o/o.
-When add ing coolant additive to your cool­
ing
system, remember:
-We recommend using only coolant addi­
tive G12++
or G13 (check the label) for
your vehicle. This coolant additive is avail­
able at authorized Audi dealers. Other
types of antifreeze can significantly re­
duce corrosion protection. The resulting
corrosion can cause a loss of coolant and
serious engine damage.
-Do not add any type of radiator leak sealant
to your vehicle's engine coolant. Adding ra­
dia to r repair fluid may adversely
affect the
func tion and performance of your cooling
system and could result in damage not cov ­
ered by your New Veh icle Limited W arranty .
Adding coolant
Fig. 187 Engine compartment : coolant expansion tank
cover