2015 AUDI A5 engine coolant

Instruments and indicator Lights
Instruments and indicator Lights
Instruments
Instrument cluster and controls
The instrument cluster is your central source of information.
Fig. 3 Overv iew of t he inst rument cluste r
CD Coolant temperature gauge .. .. .
@ Tachome ter .... .. .. ..... .... .
@ War ning/ indicator lights . .. ... .
@ ISETI button .............. ... ·
® D isp lay
- Driver informat io n system .... .
- Time and date d isp lay . .. .. ... .
- Odometer .... .. .... ... . ... .
@ Reset b utton for trip odometer
@ Fu el gauge ... .. ...... .. .. ... .
10
11
1 3
11
23
12
1 2
12
1 2
- When swit ching the ignition o n, the need les
i n the instrument clus ter swi ng upward
b rief ly .
- The ill umination for the inst rument cluste r
li ghts up whenever you switch on the igni­
tion with the
vehicle headlights off . As the
day light fades, the instrument cluster illu­
mination likewise d ims automatically and
will go out completely whe n the o utside
li ght is very low. This feature is meant to re­
mind you to swi tch on the headlights when
outside light con ditions become poor.
10
Engine coolant temperature gauge
The engine coolant gauge ¢ page 10, fig. 3 CD
only works when t he ignition is on. To prevent
damage to your engine, please note the follow­
ing important points :
Engine cold
If the needle is at or close to the bottom o f the
gauge, the engine has not yet reached its operat ­
i ng temperature. Avo id h igh engine speeds,
heavy engine loads, and heavy thrott le applica­
tions .
Normal temperature
When the engine has reached its operating tem­
perature, the needle will move to the middle of
the ga uge and rema in there. I f the engine is
working hard at hig h outs ide temperatures, t he
needle may move higher on the gauge. This is not
a cause for concern as long as the. warning
li ght i n the inst rumen t cluste r display does no t il­
l u m inat e. If the . warning lig ht in the inst ru­
ment cluster d isp lay flashes, th is can me an one
of two th ings : ei th er the coolan t
temperature is
too h igh, or t he coo lant
level is too low
¢ page 17 .,._

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A WARNING
-Always observe the warning in¢ page 191,
before open ing the hood and check ing the
engine coolant level.
- Never open the engine hood if you see or
hear steam, or if you see engine coolant
dr ipping from the engine compartment. You
cou ld burn yourself. Let the eng ine cool off
first so that you cannot hear o r see any
steam o r engine coo lant.
0 Note
- Mount ing additional lights or accesso ries in
fron t of the a ir inlets reduces the cooling ef­
fect of the radia to r. A t high outside temper­
atu res or high e ngine load, the eng ine could
overheat.
- The front spo iler has been designed to prop­
erly distribute the cooling air when the veh i­
cle is moving. If the spo iler is damaged, this
could reduce the cooling effect and the en­
gine could then overheat. Ask your author­ ized Audi dealer for assistance.
Tachometer (engine rev counter)
The tachometer indicates the engine RPM (revo­
lutions per minutes).
If engine RPM drops be low 1,5 00, you should
downshift to the next lower gea r. T he red area at
the end of the scale indicates max imum permis­
sible eng ine RPM after the break-in period . Be­
fore reachi ng this area, move the selector lever to
position D/S or ease your foot off the accelerator
pedal.
(D Note
The tachometer needle@¢ page 10, fig. 3
should o nly briefly be in the red zone: you
co uld damage your eng ine! The beginn ing of
the r ed zone varies depending on the engine.
@ For the sake of the environment
Upshift ing early saves fuel and reduces eng ine
noise .
Instrument s and indi cator ligh ts
~ button
Fig. 4 SET butto n in the instrument cluste r
The lsET j button performs the following func­
t ions:
Switching on t ime, date , temperature
display and odometer
The display appears for approximate ly 30 sec·
onds when you press the
! SE T! button c;, fig . 4
with the igni tion off .
Starting the Auto-Check sequence
The Auto-Check system constantly monitors cer­
tain individual functions and components of the
vehicle when the ignition is turned on and when
the vehicle is moving .
With the ign ition turned on, you can start the
"Auto-Check sequence" by pressing the
I SE TI but­
ton. You can perform an Auto-Check sequence
when the vehicle is sta tionary and the ign it ion is
tu rned on o r whe n th e vehicle is moving slowe r
t h an 3 mph (5 km/ h).
In add ition , the number of keys init ia lised for
your vehicle is disp layed .
L2 3/3 means that
th ree keys have be en initialised. This feature ena­
bles used car buye rs to make sure they have r e­
c e ived all of the keys.
If you are g iven only two keys, for instance, you
should take the vehicle and the existing keys to
an a utho rized Aud i dea le r to have the miss ing key
disabled.
It i s also important to no tify your insur­
ance company abo ut the loss.
Setting the sp eed warning
By pressi ng the !SET ! button briefly, you can set
th reshold 1 of the speed wa rn ing while you are
dr iv ing ¢page 80. By ma intai ning pressure on
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i? co ,...., \!) 1.1'1
N 1.1'1 ,....,
9:::1: Engine oil pressure
The red engine oil pressure warning symbol re­
quires immediate service or repair . Driving with a
low-oil-pressure indication is likely to inflict se­
vere damage to the engine.
• Turn off engin e! Oil pressure too low
If the indicator light t urns on and the message
appears, the oil pressure is too low.
• Pull
off the road.
• Stop the vehicle .
• Turnoff the engine.
• Check the engine oil level ¢ page 195.
• If the engine oil level is too low, add engine oil
¢ page 195. Make sure that the o il pressure
warning symbol. appears no longe r in the
display before you start dr iving again.
• If the engi ne oil leve l is correct a nd the ind ica­
tor light st ill turns on, turn the eng ine
off and
do not continue driving . Seek p rofess ional as ­
s istance .
(D Tips
- The engine oil pressure symbol. is not
an indicator for a low engine oil level. Do
not rely on it. Instead , check the oil level in
your engine at regular intervals, prefe rably
each time you refuel, and always before
going on a long trip.
- The yellow oil level warning indication
Ill
requires oil refill or workshop service with ­
out delay. Do not wait until the red oil pressure warning. starts to flash before
you respond to the low oil leve l warning
Ill . By then , your engine may already have
suffered serious damage.
~ . Engine oil level
• WARNING : Plea se add oil immediately
If the indicator light and the message appear,
add engine o il immed iate ly
¢page 193.
Ill Add oil, max X XXX l. You may cont . driv .
When the symbo l II and driver message appear,
add the amount of oi l appearing in the display at
the next opportu nity
¢page 193.
Instruments and indicator lights
-L Engine cooling system
A malfunction in the engine cooling system must
be repaired as soon as possible .
• Turn off eng ine and check coolant level
If the indicator light turns on and the message
appears, the coolant temperature is too high o r
the coo lant leve l is too low.
• Pull
off th e roa d.
• Stop the vehicle.
• Tur noff the engine .
• Check coolant leve l
¢page 197.
• Add coo lant if necessary ¢ page 198.
• Continue dr iv ing o nly after the engine coolant
warning/ indicator light goes out .
• Contact your autho rized Aud i dealer for assis-
tance if necessa ry.
If the engi ne coo lant level is correct, t hen the ra ­
dia to r fan may be the cause o f th e malfunct io n.
• Coolant temperature! Let engine run with
v ehicle stationary
If the indicator ligh t turns on and the message
appears, let the eng ine run at id le for a few mi ­
nutes to coo l down.
A WARNING
-- If your vehicle should brea k down for me­
cha nica l o r other reasons, pa rk at a safe d is­
tanc e from moving traffic, turn
off the en­
g ine and turn o n the h azard warn ing lights
¢ page 46, Emergency flashers.
- Ne ver open the hood if you see o r hear
steam or coo la nt es caping fro m the eng ine
compa rtment - y ou risk being scalded. Wai t
until yo u can no longer see or hear s te a m o r
coo lant escapin g.
- Th e engine comp artment o f any vehicle is a
d angerous a rea. Befo re you perfo rm any
wo rk in the eng ine com partment, tur n of
the engine and a llow it to cool. Fo llow the
warn ing stickers
¢ page 191.
(D Note
Do not con tinue dr iv ing if the . symbol illu-
minates. The re is a ma lfunction in the engine
II>-
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Warm and cold
Warm and cold Climate control system
Description
The climate control system warms, cools and
adds humidity to the air in the vehicle interior. It
is the most effective when the windows and sun­
roof are closed. If there is a build-up of heat in­
side the vehicle , ventilation can help to speed up
the cooling process.
In all heating mode functions except
defrost, the
blower only switches to a higher speed once the
engine coolant has reached a certain tempera­
ture.
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.
Pollutant filter
The pollutant filter removes pollutants such as
dust and pollen from the air.
The air pollutants filter must be changed at the
intervals specified in your Warranty & Mainte­
nance booklet, so that the air conditioner can
properly work.
If you drive your vehicle in an area with high air pollution , the filter may need to be changed
more frequently than specified in your Audi War­
ranty
& Maintenance booklet. If in doubt, ask
your authorized Audi Service Advisor for advice.
Key coded settings
The climate control settings are automatically
stored and assigned to the remote control key
that is in use .
.8, WARNING
Reduced visibility is dangerous and can cause
accidents.
- For safe driving it is very important that all
windows be free of ice, snow and condensa­
tion.
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- Completely familiarize yourself with the
proper use and function of the heating and
ventilation system and especially how to de­
fog and defrost the windows .
- Never use the windshield wiper/washer sys­
tem in freezing weather until you have
warmed the windshield first, using the heat­
ing and ventilation system . The washer solu­
tion may freeze on the windshield and re­
duce visibility .
(D Note
-If you suspect that the air conditioner has
been damaged, switch the system off to
avoid further damage and have it inspected
by a qualified dealership.
- Repairs to the Audi air conditioner require
special technical knowledge and special
tools. Contact an authorized Audi dealer for
assistance.
@ For the sake of the environment
By reducing the amount of fuel you use, you
also reduce the amount of pollutants emitted
into the air.
(D Tips
-Keep the air intake slots (in front of the
windshield) free from ice, snow and debris
in order to maintain the proper function of
the climate control system.
- The energy management system may switch
the seat heating* or rear window defroster
off temporarily. These systems are available
again as soon as the energy balance has
been restored.
- Air escapes through vents under the rear
window. When placing items of clothing on
the luggage compartment cover, ensure
that the openings are not covered.

Driving
Starting the vehicle with the emergency
key
Applies to veh icles: w ith igni tion lock
You can use the emergency key as an ignition key
in an emergency.
Fig. 78 Glove compar tmen t: A dapter for emerge ncy key
Fig. 79 Inser t emergency key into the adapter
.,. Take the ad apter for the emergency key out of
the glove compartment
c:> fig. 78.
.,. Pu sh the emergency key c:> fig. 79 fully into the
adapter . Make sure that the Audi rings are fac ­
ing up .
.,. Press the emergency key in the adapter down
until it latches audibly.
.,. Insert the adapter with the emergency key for­
ward into the ignition switch. The eng ine can
now be start ed as usual.
Stopping the engine
App lies to veh icles: w ith ig ni tio n lock
.,. Bring the vehicle to a full stop .
.,. Automa tic transmission: Move the selec tor lev­
er to the P or N position .
.,. Press on the ignition key. The engine is turned
off .
.,. You can now remove the key.
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Steering lock
The steering locks when you remove the ignition
key. The locked steering he lps prevent vehicle
theft.
Emergency off
If it is necessary in unusual circumstances, the
engine can be switched off while the vehicle is
moving. The engine will be switched off if you
press on the key for an extended period.
A WARNING
- Never turn off the engine before the vehicle
has come to a complete stop. The full func­
tion of the brake booster and the power
steering is not guaranteed. You must use
more force to turn or brake if necessary . Be ­
cause you cannot steer and brake as you
usually would, this could lead to crashes
and serious injuries.
- For safety reasons, you should always park
your vehicle with the selector lever in P . Oth­
erw ise, the vehicle could inadvertently roll
away.
- The radiator fan can continue to run for up
to 10 minutes even after you have turned off the engine and removed the ignition key .
The radiator fan can also turn on again if the
engine coolant heats up because of intense
sunlight or heat build-up in the engine com­
partment.
- Always take the key with you whenever you
leave your vehicle. Otherwise, the engine
could be started or electrical equipment
such as the power windows could be operat­
ed. This can lead to serious injury .
- Never leave children or persons requiring as­
sistance unattended in the vehicle. The
doors can be locked using the remote trans­
mitter, preventing people from escaping
from the vehicle on the ir own in the event of
an emergency. Depending on the time of
year, people inside the vehicle can be ex ­
posed to very high or
very low tempera-
tures. ,..

Driving
oil pressure must first build up in the hy ­
draulic va lve adjusters. This is normal and
not a cause for concern .
- If yo u leave the vehicle with the ign ition
switched on, the ignition will switch off af­
ter a certa in period o f time . P lease note that
electr ica l equipment suc h as exterior lights
will switch off as well when that happens.
Switching engine off
Applies to vehicles: w ith conven ience key
" Bring your veh icle to a complete stop .
" Automat ic transm iss ion: Move the se lector lev­
er to the P or N pos ition .
" Press the
!S TAR T ENGINE STOPI bu tton
~page 75, fig. 80 .
Steering lock
The steering locks when you tu rn the engine off
using the
! STA RT E NG IN E STOP I button and open
the dr iver's door . The locked stee ring helps pre ­
vent vehicle theft .
Emergency off
If necessary, the eng ine can be sw itched off with
the selector lever in the R o r D/S pos itions . T he
engine stops if you press and hold the
I S TAR T ENGIN E ST OP I button at speeds be low
6 mph ( 10 km/h) and p ress the brake pedal.
A WARNING
- Never turn off the engine be fore the veh icle
has come to a comp lete stop. The f ull func­
t ion of the b rake booster and the power
steering is not guaranteed. Yo u must use
more force to turn or bra ke if necessa ry. Be­
ca use you cannot steer and b ra ke as you
usually wou ld, this could lead to c rashes
and serious injur ies .
- For safety reasons , you should always park
yo ur vehicle wi th the selec to r l ever in P . Oth­
erwise, t he vehicle could inadve rten tly roll
away .
- T he rad iator fan ca n con tinue to run for up
to 10 m inutes eve n after yo u have tur ned
o ff the engine and removed the igni tion key .
T he r adiator fan c an also turn on ag ai n if t he
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engine coolant heats up because of intense
sunlight or heat b uild- up in the eng ine com­
partme nt.
- Always take the key w ith you whenever yo u
leave your vehicle . Otherwise, the engine
could be started or electrical equipment
such as the powe r windows could be operat­
ed. This can lead to serio us i njur y.
(D Note
If the engine has been under heavy load for
an extended pe riod, heat bu ilds up in the en­
gine compartment after the eng ine is switch ­
ed off -there is a risk of damaging the engine .
A llow the engi ne to run at id le for about two
m in utes before swit ching i t off.
Driver messages
Ignition is on
This message appears and a warning tone sound s
i f you open the d river's door when the ign ition is
switched on .
No key ident ified
This message appears when the
I S TAR T ENGINE ST OP I butto n is pressed if there
i s no maste r key ins ide the ve hicle or if the sys­
tem does not recogni ze it. For examp le, the mas­
ter key cannot be recogn ized if it is covered by an
object (e .g . a luminum brief case) wh ich
screens
the radio signal. Elect ro n ic dev ices such as cell
phon es can a lso inte rfe re with the radio signal.
Press brake pedal to start eng ine
This message appears if yo u do not press the
brake pedal to start the eng ine in a vehicle with
an a utomat ic transm ission.
Pre ss clutch pedal to start engine
This message appears if yo u do no t press the
cl utc h ped al to sta rt the eng ine in a ve hicle w it h
a manual transmission.
Shift to N or P to start eng ine
This message appears when attempt ing to star t
t h e engine if the selecto r lever for the automat ic
transmission is not in the P o r
N position. T he ..,.

Trailer mode
Tire pressure
When tow ing a trailer, inflate the tires of your ve­
hicle to the cold tire pressure listed under " Full
load" on the label located on the driver's side B ­
pillar (visible when the door is open). Inflate
trailer tires to trailer and tire manufacturers'
specifications.
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 su re trailer safety chains are properly connect­
ed from the trailer to the hitch on the vehicle.
Leave 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 chains shou ld cross under the trai ler tongue
to prevent it from dropping in case of separation
from the hitch.
Driving instructions
Driving with a trailer always requires extra care
and consideration.
To obtain the best possible handling of vehicle
and trai ler, please note the following:
.. Do not tow a loaded trailer when your car itself
is not loaded .
.. Be especia lly careful when passing other
vehicles.
.. Observe speed limits.
.. Do not drive at the maximum permissible
speed .
.. Always apply brakes early.
.. Monitor the temperature gauge.
Weight distribution
Towing a loaded trai ler with an empty car results
in a highly unstable distribution of weight. If this
cannot be avoided, drive at very low speeds only
to avoid the risk of losing steering control.
182
A "balanced" rig is easier to operate and contro l.
This means that the tow vehicle shou ld be loaded
to the extent possible and permissib le, wh ile
keep ing the trailer as light as possible under the
c ir cumstances. Whenever poss ible, transfer
some cargo to the luggage compartment of the
tow veh icle while observing tongue load require­
ments and vehicle load ing considerat ions .
Speed
The higher 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 w ind
cond it ions are unfavorab le - particularly when
go ing downh ill.
Reduce veh icle 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 tra ilers are lower than for regular
vehicles.
Always apply brakes early. When dr iving 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
The coolant temperature gauge¢ page 10 must
be observed carefully. If the needle moves close
to the upper end of the scale, reduce speed im­
med iately and/or turn off the air conditioner .
If the coolant temperature warning light . in
the instrument cluster starts flashing, pull off
the road, stop and let the engine
idle for about
two m inutes to prevent heat build-up .
&_ 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 Audi.
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Checking and Filling Hood
Releasing and opening the engine hood
The engine hood is released from inside the vehi­
cle.
Fig. 159 Driver's side footwell: e ng in e hood release lever
Fig. 160 Releas e lev er un der t he e ngin e hood
Before opening the engine hood, make sure that
the windshield wipers are flat against the wind­
shield . Otherwise, they could damage the paint
on the hood.
.. With the driver's door open, pu ll the lever un­
der the instrument panel in the direction of the
arrow
c::> fig . 159.
.. Ra ise the hood slightly c::> &.
.. Press the rocker switch under the hood upward
c::> fig . 160. This releases the catch .
.. Open the hood.
A WARNING
Hot engine coolant can burn you.
- To reduce the r isk of being burned, never
open the hood if you see or hear steam or
coolant escaping from the engine compa rt­
ment. Wait until no steam or coolant can be
Checking and Filling
seen or heard before carefully opening the
hood .
Closing the engine hood
.. Pull the hood down until the pressure from the
struts is reduced.
"' Let the hood
drop down and latch in place. Do
not try to push it shut;
it may fa il to engage
c::> &. -
A WARNING
A hood that is not comp letely latched could
fly up and block your view while driving.
- When you close the engine hood, check it to
make sure the safety catch has properly en­
gaged . The hood should be flush with the
surrounding vehicle body parts.
- If you notice while driv ing that the hood is
not secured properly, stop at once and close
it.
Working in the engine compartment
Be especially careful whenever you work in the
engine compartment.
-
Whenever you must perform any work in the
engine compartment, for example checking and
filling different fluids , there i s a risk of injury ,
burns and accidents. To prevent personal injury
always observe the following WARNINGS . The
engine compartment of any vehicle is a hazard­
ous area
c:> .&. .
A WARNING
-
To help avoid injury, before you check any-
thing under the hood:
- Turn off the engine.
- Remove the ignition key .
- Apply the parking brake.
- Move selector lever of automatic transmis-
sion to "P" (Park); put manua l transmission
in Neutral.
-Always let the engine cool down. Hot com­
ponents wi ll burn skin on contact .
191