2018 AUDI A5 COUPE engine coolant

Cockpit overv iew
@ Tips
Some the equipment listed here is only instal­
led in certain mode ls or is ava ilable as an op ­
tion.
Instrument cluster
Instrument cluster overview
The instrument cluster is the central information center for the driver .
Fig. 3 Instrument cluster overv iew (analog)
F ig . 4 Instrument cluster overv iew (Aud i v irtual cockpit)
(!) Engine coolant temperature gauge
@ Tachometer ................. .
- With
OFF status indicator .... .
- With
READY status ind icator ..
@ Tab area ... .... ... ....... ... .
@ Central area with
10
11
12
89
89,9 1
13
- Driver information system .... .
- Indicator lights . ...... ..... .
® Status line (d isplayed on one or two
lines)
@ Speedometer/conven ience d isplay
(J) Fuel leve l ..... .. ... ......... .
® Speedometer
17
25
12

<( a, .... N ,....
N .... 0 \0
3 a,
® Left additional display (divided in
two sections in the expanded view)
There may be additional indicator lights in the
tachometer @, the speedometer @, the status
line ® and, depending on the instrument clus­
ter, above or below the central
area @.
The following pages will primarily show illustra­
tions of the multi-color analog instrument clus­
ter*. The display and/or position of the element
shown may vary in monochrome instrument clus­
ters or in the Audi virtual cockpit*.
A WARNING
Do not assume the roads are free of ice based
on the outside temperature display. Be aware
that there may be ice on roads even when the
outside temperature is around 41 °F (+S °C)
and that ice can increase the risk of accidents.
(D Tips
-Depending on vehicle equipment, the in­
strument illumination (needles and gauges)
may turn on when the lights are off and the
ignition is switched on. The illumination for
the gauges reduces automatically and even­
tually turns off as brightness outside in­
creases. This function reminds the driver to
turn the low beams on at the appropriate
time.
- You can select the units used for tempera­
ture, speed and other measurements in the
Infotainment
system ¢ page 251.
- If your vehicle is stationary or if you are driv­
ing at very low speeds, the temperature dis­
played may be slightly higher than the ac­
tual temperature outside due to the heat ra­
diating from the engine.
- At temperatures below 41 °F (+S °C), a snowflake symbol appears in front of the
temperature display
c> &. .
Coolant temperature indicator
The coolant temperature display @¢ page 10,
fig. 3 or¢ page 10, fig. 4 only functions when
the ignition is switched on. To prevent engine
Cockpit overview
damage, please observe the following notes
about the temperature ranges.
Cold range
If only the LEDs at the bottom of the gauge turn
on, the engine has not reached operating tem­
perature yet. Avoid high engine speeds , full ac­
celeration 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. If
the. indicator light in the instru­
ment cluster display turns on, the coolant tem­
perature is too high
¢ page 30.
(D Note
-Auxiliary headlights and other accessories in
front of the cooling-air intake impair the
cooling effect of the coolant. This increases
the risk of the engine overheating during
high outside temperatures and heavy en­
gine load .
- The 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 cility for assistance .
@ Tips
Diesel engines: due to the high efficiency of
these engines, the engine may not always reach operating temperature in cold outside
temperatures. This is normal and not a cause
for concern .
Engine oil temperature display and boost
indicator
Applies to : vehicles wit h engine o il temperature display/boost
indica tor
Applies to: vehicles with analog instrument cluste r
The engine oil temperature and boost indicator
are only shown in the lap timer display
¢page 111. .,._
11

Cockpit over view
There is not enough braking force to hold the ve­
hicle in place . The brakes have overheated. The
veh icle cou ld ro ll away even on a small incline .
Ill (U SA mod els)/ lC@j (C an ad a model s) Parking
brake : applied
If th is message appears, press the brake pedal
fi rst a nd the n release the pa rk ing bra ke if neces­
sary.
II ( U SA model s)/ l(@j (Canada mo dels) Parking
brak e: emerg ency braking
The emergency braking function was triggered .
Please rele ase park ing b rake
Release the par king brake if t his message ap ­
pears.
Plea se pr ess brak e pedal to rel ease parking
brak e
To release the park ing brake, press the brake
pedal and press
the ~ button at the same time,
or start driv ing with hill start ass ist
9 page 95,
Starting to drive.
(D Tips
For add it ional information on the park ing
brake, see
9 page 94.
-L Cooling system
• Turn off engin e and che ck co ola nt level. See
o w ner 's manual
The coolant leve l is too low.
Do not cont inue driving and switch the engine
off . Check the coolant level
9 page 336.
- If the coolant level is too low, add coolant
9 page 336. On ly cont inue driving once the in­
dicator light turns off .
• Coolant t emper atu re: too high. Let e ngi ne
run with vehicle st ationar y
Let the eng ine run at id le for a few minutes to
coo l off, until the indicator light turns off .
- If the indicato r ligh t does not turn off, do not
contin ue driving the vehicle. See an au thorized
30
Audi dea ler 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 dange rous area . Stop the engine and
allow it to cool befo re working in the engine
compa rtment. Always follow the informa­
tion fo und in
9 page 330, Working in the
engine compartment .
(D Note
Do not continue driv ing if the . indicator
li ght turns on as this increases the risk of en­
gine damage.
~ Safety belt
The . indicator light stays on until the dr iver's
and front passenger's safety belts are fastened.
Above a certain speed, there will a lso be a warn­
i ng tone.
(D Tips
For additional informat ion on safety belts,
see
Q page 268.
0 Generator/Vehicle battery
If the . or(•) indicator light turns on, there is a
malfunction in the generator or the vehicle e lec­
trical system .
• Electrical sy stem: malfunction! Saf ely stop
v ehicle
Do not continue dr iving and switch the engine
off. See an authorized Audi dealer or autho rized
Audi Service Facility for assistance.
(•j Ele ctri cal system: m alfunc tion! Re sta rt not
po ssible. Plea se cont act Ser vice
The vehicle battery was disconnected from the
vehicle e lectr ica l system and will no longer

<( a, .... N ,....
N .... 0 \0
3 a,
Warm and cold Climate control system
Description
The climate control system warms , cools and re­
moves humidity from the air in the vehicle interi­
or. It is the most effective when the w indows and
sliding sun roof* or power top* are closed . If
there is a build-up of heat inside the vehicle, ven­
tilation can help to speed up the cooling process.
I n all heating mode functions except for
defrost ,
the blower on ly switches to a higher speed once
the engine coolant has re ached a sufficient tem­
perature .
Pollutant filter
The pollutant filter removes pollutants such as
dust and pollen from the air.
Key recognition
The climate control settings are automatically
stored and assigned to the remote control key
that is in use .
T hese settings are different when the power top*
is open or closed .
Warm and cold
{® For the sake of the environment
-If you would like to reduce fuel consump­
tion, switch the air conditioning off . This
will also reduce emissions.
- In vehicles with a diesel engine, you can
switch the auxiliary heater off in the Info­
tainment system.
(D Tips
- To prevent interference with the heating
and cooling output and to prevent the win­
dows from fogging over, the air intake in
front of the windshield must be free of ice,
snow or leaves .
- Condensation from the cooling system can
drip and form a puddle of water under the
vehicle . This is normal and does not mean
there is a leak .
- The energy management system may tem ­
porarily switch off certain functions, such as
the seat heating* or rear window defogger.
These systems are available again as soon
as the energy supply has been restored.
81

Warm and cold
3fx Defr os ting
The windshield and s ide windows are defrosted
or cleared of condensation as quickly as possible.
The maximum amount of air flows mainly from
the vents below the windshield. Recirculation mode switches off. The temperature shou ld be
set at
+72°F (+22°() or higher. The temperature
is controlled automatically.
You can switch the defroster on or off using the
~button.You can switch the function off by
pressing a
knob @.
Applies to vehicles with windshield defogger: the
windshield defogger switches on automatically
when outside temperatures are low. If you would
like to switch the windshield defogger on man­
ually, press
the~ button. The LED in the button
blinks.
QID REAR Rear windo w def ogg er
You can switch the rear window defogger on by
pressing
the ~ button . It on ly operates when the
engine is running. It switches off automatically
after 10 to 20 minutes, depending on the outside
temperature.
To prevent the rear w indow defogger from
sw itching off automatically, press and hold the
CliP REAR button for more than three seconds.
This is stored until the ignition is switched off .
SYNC Synchroni zat ion
Use the rocker switch ® to select the function.
When synchronization is switched on, the set­
tings for the driver's side are appl ied to the front
passenger's side and the rear (except for seat
heating/vent ilation*). When the sett ings on the
front passenger's side or in the rear are changed,
the synchron izat io n is automatically sw itched off
and
3 -zone appears in the d isplay.
SET REAR function
Use the rocker switch ® to select the funct ion .
When the function is switched on, you can adjust
all settings for the rea r us ing the climate cont rol
sys tem cont rols in the cockpit. The rear climate
con trol system cont rols cannot be operated at
the same time . This function switches off auto-
84
matically after a certain period of time or after
l eaving the menu.
Vents
You can open o r close the center and rear vents in
the cockpit and the vents in the rear center con ­
so le using the ridged thumbwheels . The levers
adjust the direction o f the airflow from the vents.
The wide vent is opened and closed using the rocker switch ®·
Residual heat
You can act ivate the residual he at function when
the ignition is switched off by pressing the knob
(D . The residual heat from the coolant is used to
heat the vehicle interior . The residual heat func­
tion switches off automat ica lly after about 15
minutes.
A WARNING
- You shou ld not use the recirculation mode
for an extended period of time, because no
fresh air is drawn in and the windows can
fog when cooling mode is switched off. This
increases the r is k of an accident.
- I ndividuals w ith reduced sensit iv ity to pa in
or temperature co uld develop bu rns when
using the sea t heating* or neck heat ing*
functions. To reduce the risk of injury, these ind ividuals must not use the seat or neck
heating *.
- If the ai r vents in the seats are covered by
clothing or similar objects when the neck heating * is switched on, the output from
the neck heat ing may become very hot tem­
porarily. This can cause burns on unprotect­
ed skin exposed direct ly to the vents.
(D Note
To avoid damaging the seat heating* ele­
ments, do not knee l on the seats or place
heavy pressure on one area of the seat.
(D Tips
- When the powe r top* is closed, the neck
heating* switches automatically from set­
t ing 3 to setting 2 after approx imately six
mi nutes.

Driving
St ee ring lock1
)
The stee ring locks when you t urn the engine off
using the
! S T A RT ENGINE ST OP I button and
open the driver 's door. The locked steering helps
prevent v ehicle theft .
Emergency off function*
If it is abso lutely necessary, the engine can also
be turned off while dr iv ing at speeds star ting at
4 mph (7 km/h). To switch the eng ine off, press
the
! S TAR T ENGINE ST OP I button tw ice in a row
briefly or press and hold for longer than two sec­
onds.
A WARNING
- Never turn off the engine before the veh icle
has come to a comp lete stop . The full func­
t ion of the brake booster and the power
stee ring is not guaranteed. Yo u must use
more force to turn or b rake . Because you
cannot s teer an d brake as you usu ally
would, t his co uld lead to accidents and ser i­
ous in juries.
- Alw ays t ake the key wi th you w henever you
leave you r vehicle . Othe rw ise, the engi ne
cou ld be started o r electrical equipment
s uch as the power windows cou ld be operat­
ed . This can lead to se rious injury.
- For safety reasons, always park the vehicle
with the se lector lever in the P position
(a u­
tomat ic transmission) or with 1st gear en­
gaged (manual transmission). Otherwise
the vehicle could roll away u nintent ionally .
(D Note
If the eng ine has been under heavy load for
an extended per iod of t ime, heat builds up in
the engine compartment after the engine is
sw itched off and there is a risk of damaging
the engi ne . For this reason, let the engi ne run
for at idle for approximately two minutes
be­
fore shutting it off.
l) Th is fun ction is not avai la bl e in al l co un tries.
90
(D Tips
Fo r u p to 10 minutes after stopping the en­
g ine, the radiator fan may turn on again auto­
matically or it may continue to r un (even if
the ig nition is switched off) for the following
r easons:
- The coolant temperature is increas ing due
to trapped heat.
- If the eng ine is wa rm and the eng ine com­
partment a lso heats up from strong sun­
light .
- Applies to: vehicles with diesel particulate
filter: The emissions control system is heat­
ed through the regeneration process, even if
the engine has not reached its operat ing
tempe rature yet.
Messages
Engin e running . Warning! Turn off ignition be ­
fore leavin g vehicle
This message appears and a warning tone sounds
i f you open the drive r's door w hen the eng ine is
r un ning .
Applies to: vehicles with manual transmission
Please pres s clutch pedal
This message appears if you do not press the
clutch pedal to start the eng ine. The engine can
o nly be started w hen the clutch pedal is pressed.
Applies to: vehicles with automatic transmissions
Plea se pres s brake pedal
This message appears if you do not press the
bra ke peda l when sta rting t he eng ine .
Ill Remote control key : key not recognized. Is
the key still in the vehicle ?
This indicator light turns on and this message ap­
pears if the ignition key was removed from the
vehicle when the engine was running . If the igni­
tion key is no longer in the vehicle, you cannot
switch on the ignition or start the engine once

<( a, .... N ,....
N .... 0 \0
3 a,
tires to trailer and tire manufacturers' specifica­
tions.
Lights
The headlight settings should be checked with
the trailer attached before driving off. Check to
make sure both vehicle and trailer lights are
working properly.
Safety chains
Be sure trailer safety chains are properly connect­
ed from the trailer to the hitch on the vehicle.
L eave enough slack in the chains to permit turn­
ing corners . When you install safety chains, make
sure they will not drag on the road when you are
driving .
The cha ins shou ld cross under the trailer tongue
to prevent it from dropping in case of separat ion
from the hitch.
Driver messages
Driving with a trailer requires extra caution.
Weight distribution
Towing a loaded trailer with an empty car results
in a high ly unstable distribution of weight .
If this
cannot be avo ided, drive at very low speeds only
to avoid the risk of losing steering control.
A "balanced" rig is easier to operate and control.
This means that the tow vehicle should be loaded to the extent possible and permissible, whi le
keep ing the trailer as light as possible under the
circumstances . Whenever possible, transfer
some cargo to the luggage compartment of the
tow vehicle whi le observ ing tongue load require­
ments and vehicle loading considerations.
Speed
The highe r the speed, the more difficult it be­
comes for the driver to control the rig. Do not
drive at the maximum permissible speed. Reduce
your speed even more if load, weather or wind conditions are unfavorable
-particularly when
going downhill.
Tra iler towing
Reduce vehicle speed immediately if the trailer
shows the slightest sign of swaying.
Do not try
to stop the swaying by accelerating.
Observe speed limits. In some areas, speeds for
vehicles towing trailers are lower than for regular
vehicles .
Always apply brakes early. When driving down­
hill, shift into a lower gear to use the engine
braking effect to slow the vehicle . Use of the
brakes alone can cause them to overheat and fail.
Coolant temperature
T he coo lant temperature gauge ~ page 11 must
be observed carefully. The coolant temperature
can increase if you drive on long inclines in a low
gear at high engine speeds . Reduce your speed
immediately if the LEDs in the top part of the dis­
play turn on.
For more information about indicator lights, re­
fer
to . ~page 30 .
A WARNING
=
Anyone not properly restrained in a moving
vehicle is at a much greater risk in an acci­
dent. Never let anyone ride in your car who is
not properly wearing the restraints provided
by Aud i.
Trailer towing
information
Important to know
-
Your vehicle handles differently when towing a
trailer because of the addit ional weight and dif­
ferent weight distribution . Safety, performance
and economy will greatly depend on how careful­
ly you load your trailer and operate you r rig.
Before you actually tow your trailer, pract ice
turning, stopping and backing up in an area away
from traffic . Keep pract ic ing until you have be­
come complete ly familiar w ith the way your vehi­
cle-trailer combination behaves and responds.
105

Check ing and F illing
Engine compartment
Working in the engine compartment
Special care is required if you are working in the
engine compartment
Fo r wo rk in th e engine compa rtmen t, s uch as
c h ec kin g and filli ng flu id s, th ere is a risk of in­
j u ry, sc aldin g, ac cide nts, a nd b urn s. For this
rea son, foll ow all the warning s and gener al
s a fe ty p recaution s pr ov ided in the f ollow ing in·
f o rm ation . Th e en gine c omp artmen t is a dan ­
ger ous are a.
q ,&.
_& WARNING
- T urn the engine off.
- Switch the ign ition off .
- Set the parking brake .
- Shift the gearshift lever to neutral in vehicles with a manual transm ission and se­
lect the P selecto r lever pos ition in vehicles
with an automatic transmission.
- Let the engine coo l down .
- Never open the hood when there is steam or coolant escaping from the eng ine compart­
ment, because there is a risk that you cou ld
be burned. Wait until no steam or coolant is
escaping.
- Keep ch ildren away from the engine com­
partment.
- Never spill f lu ids on a hot engine. These flu­
ids (such as the anti-freezing agent con­
ta ined in the coolant) can ignite .
- Avoid sho rt circu its in the electrical system.
- Whe n working in the engine compartment ,
remember that the rad iator fan can sw itch
on even if the ign ition is switched off, which
increases the risk of in jury.
- Never open the cap on the coolant expan­
sion tank when the eng ine is warm. The
cooling system is under pressure.
- T o protect your face, hands, and arms from
hot steam or coolant, cove r the cap with a
large cloth when opening .
- Do not remove the engine cover under any
c ircumstances. This increases the risk of
burns .
330
-If tests need to be performed with the en­
gine running, there is add itiona l danger due
to mov ing components (such as the r ibbed
belt, alternator and rad iator fan) and from
the high-voltage ignition system .
- Do not under any circumstances activate the
throttle inadvertently (for example, by hand
from the engine compartment) if the veh i­
cle is stat ionary but the eng ine is r unning
and a gear is engaged. Otherwise, the veh i­
cle will start to move immediately and this
could result in an acc ident.
- Pay attent ion to the following warnings
when work on the fue l system is required :
- Do not smoke.
- Never work near open flames.
-Always have a working fire extinguisher
nearby .
-All work on the battery or electrical system
in your vehicle can result in inju ries, chemi­
cal b urns, acc idents or burns. Because of
this, all work must be performed
onl y by an
author iz ed Audi dealer or authori zed Audi
Serv ice Facili ty .
-To reduce the r isk of e lectr ic shock and in­
jury, never touch the follow ing components
when the engine is running or is being start­ ed:
- Ign ition cable
- Other components in the electronic high- vo ltage ign ition system
- If you must che ck or perform wo rk on the
engine whi le it is running:
-First, set the parking brake and and move
the gearshift lever to neutral (for manual
transm issions) or select the P selector lev­
er posit ion (for automatic transm issions) .
- Always proceed with extreme caution so
that clothing, jewelry or long hair do not become caught in the rad iator fan, fan
belt or other moving components or do
not come into contact with hot compo­
nents. Tie bac k long hair befo re beginn ing
work and do not wear clothing that can
hang down into the engine.
-Lim it yo ur exposure to exhaust and chemi­
cals to as short a time as possible
q .&. .