2010 AUDI A5 COUPE coolant level

Warning light in the instrument cluster display -L
If the _L wa rn ing l ight in the ins trument cluste r display flashes, this
can mean one of two things : either the coolant temperature is too
h igh, or the coolan t level is too low ~ page 30.
If t he needle is we ll in the upper area of the gauge, the coolant
temperature is too high.
Stop the vehicle , swit ch the engine off , and
allow it to cool.
If the war ning light comes on again a fter d riv ing a
short distance, contact an authorized Audi dea ler or other qualified
w orksh op.
& WARNING
• Alway s observe the warning in ~ page 263 , "Engine compart­
ment ", before open ing the hood and che cking the engine coolant
level.
• Never open the engine hood if you see or hear steam , or if you
s ee engine coolant dripping from the engine compartment. You
could burn yourself . Let the engine cool off first so that you cannot
hear or see any steam or engine coolant .
0 Note
• Mo unting add itiona l lights or accesso rie s in front o f the ai r inlets
reduces the cooling effect of the radiator . At high outside tempera ­
t ures or high engi ne load, the engine coul d overheat .
• T he front spoiler has been designed to properly distribute the
cooling air wh en the vehic le is m oving. If the spoi ler is dam age d,
this could reduce the coo ling effect and the engine could then over­
heat . Ask your a uth oriz e d Audi deale r for assis tance .•
Con tro ls and eq uip­
ment
Instruments and warning /indicator lights
Tachometer (engine rev counter)
T h e ta chometer in dicat es th e engine RPM (r e vo lutio ns per
m in ute s).
If engine RPM drops be low 1,500, you should downshift to the next
low er g ear. The red area at t he end o f the scale indicates ma xim um
permissible engine RPM after the break -in period. Before reaching
this ar ea, move the se lecto r lever to pos ition
D (Drive) or ease y our
foot off the acce lerator peda l.
0 Note
The tachometer needle@~ page 8, fig. 2 should only briefly be in
t he red zone : you c oul d da mage y our engine! The beginning of the
red zone varies depending on the engine .
~ For the sake of the environment
Upshiftin g ear ly saves fu el and reduces engine noise .•
[ S ET ) button
Y o u c an pe rform diffe re n t fu nctio ns w ith this but ton.
Fig . 3 SET button in
the in strument clu ster
The [S ET ] b utto n perfor ms the fo llowi ng fu nc tio ns:
Vehicle care I I irechnical data

With a priority 1 malfunction, a red symbol appears in the upper
center area of the display=:>
page 28, fig. 26. A driver message
appears as well to explain the ma lfunction in more detail. When this
symbo l appears,
three warning tones sound in succession. The
symbol continues to flash until the fault has been corrected.
If
several priority 1 malfunctions are present, the symbols appear in
succession and remain for about 2 seconds .
T he driver warning goes out after about 5 seconds, but it can be
brought up again at any time by pressing the
I SE T]
button.=:>
page 28
LJ Alternator failure =:> page 29
BRAKE
USA model s: =:> page 29
Brake system malfunctio n
--

Ca nad a mod els: =:> page 29
Brake system malfunction
- F-Engine coolant level too =:> page 30
-low/engine coolant temperature
too high
~ Engine oil pressure too low =:> page 31
~,. Refill engin e oil now =:> page 31
~-e Steering ma lfunction =:> page 32
--
©-e Ignition lock malfunction
=:> page 32
Alternator malfunction 0
If the O symbol in the instrument pane l disp lay flashes, then there
is a malfunction in the alternator or the vehicle electronics. A
warning to the driver will appear, too . The driver warning goes out
Controls and equip ­
ment
•
Dr ive r informat ion di spl ay
after about 5 seconds, but it can be brought up at any time by
pressing the
ISETj button again .
Usually, you can still drive to the next dea lership . Turn off all but the
most necessary electrical consumers, since these drain the vehicle's
battery .
0 Note
If the the .JL warning symbol (coolant system ma lfunction) also
lights up on the instrument pane l during the trip=:>
page 30, then
you have to stop immediately and turn off the engine . The coolan t
pump is not working anymore --danger of damage to the engine! •
Brake system malfunction
A malfunction in the brake system must be repaired as
soon as possible.
If the warning /indi cator light BRAKE (USA models)/ (©)
(Canada models) in the i nstrument cluster flashes, there is
a brake sys tem mal funct ion . A driver message appears as
well to explain the malfunction i n more detail. T he driver
warning goes o ut after about 5 seco nds, but it ca n be
br ought up a t any time by p ressing the !SET] button aga in .
S top th e Vehi cle and Che ck the Brak e Fluid
- Stop the vehicle.
- Check the brake fluid level=> page
280 .
-Seek professional assistance if necessary .
Cauti on! Brake m alfun ction (ABS ) G et it s ervi ced
- Drive carefully to the nearest authorized Aud i dealer or
other qualified workshop and have the malfunction
corrected =>
&. .,_
I • •

Driver information display
Parking brake Please get to a repair shop
-If this symbol appears when the vehicle is stationary or
after the ignition is turned on, check to see if the parking
brake can be released. Drive to an authorized Audi dealer
or other qualified workshop as soon as possible and have
the malfunction corrected. If the parking brake cannot be opened, then take it to an expert at an authorized Audi
dealer.
- If the symbol appears while you are driving, it is possible
that the traction control or the emergency brake has
malfunctioned. It is possible that the parking brake
cannot be applied. It is also possible that the parking
brake cannot be released after it has been applied. Drive
to an authorized Audi dealer or other qualified workshop
to have the malfunction corrected.
If the ABS system malfunctions, the ABS warning/indicator light illu ­
minates together with the brake system malfunction warning/indi­
cator light=>& .
& WARNING
• Always observe the warnings in => page 263, "Engine compart­
ment ", before opening the hood and checking the brake fluid.
• Driving with low brake fluid is a safety hazard. Stop the car and
get professional assistance.
• USA models: If the
BRAKE warning light and the warning
light come on together, the rear wheels could lock up first under
hard braking . Rear wheel lock-up can cause loss of vehicle control
and an accident. Have your vehicle repaired immediately by your
authorized Audi dealer or a qualified workshop. Drive slowly and
avoid sudden, hard brake applications.
• Canada models: If the brake warning light (Ci] and the ABS
warning light come on together, the rear wheels could lock up
& WARNING (continued)
first under hard braking. Rear wheel lock-up can cause loss of
vehicle control and an accident. Have your vehicle repaired imme­
diately by your authorized Audi dealer or a qualified workshop.
Drive slowly and avoid sudden, hard brake applications. •
Engine cooling system malfunction _}_
A malfunction in the engine cooling system must be
repaired as soon as possible.
If the _p_ symbol flashes in the display, either the engine
coolant
temperature is too high or the engine coolant level
is too low. A driver message appears as well to explain the
malfunction in more detail. The driver warning goes out
after about 5 seconds, but it can be brought up at any time
by pressing the [ SET] button again.
Switch off engine and check coolant level
- Pull off the road.
- Stop the vehicle.
- Turn off the engine.
- Check coolant level~
page 278.
- Add coolant if necessary ~ page 279.
Continue driving only after the engine coolant
warning/indicator light goes out.
- Contact your authorized Audi dealer for assistance if
necessary.
If the engine coolant level is correct, then the radiator fan may be
the cause of the malfunction. ...

& WARNING
• If your vehicle should break down for mechanical or other
reasons, park at a safe distance from moving traffic, turn off the
engine and turn on the hazard warning lights
=> page 57, "Emer­
gency flashers
A".
• Never open the hood if you see or hear steam or coolant
escaping from the engine compartment -you risk being scalded.
Wait until you can no longer see or hear steam or coolant
escaping.
• The engine compartment of any vehicle is a dangerous area .
Before you perform any work in the engine compartment, turn of
the engine and allow it to cool . Follow the warning stickers
=> page 263, "Engine compartment".
0 Note
Do not continue driving if the -F-symbol illuminates. There is a
malfunction in the engine cooling system -you could damage your
engine .•
Engine oil pressure malfunction 9=::7-
The red engine oil pressure warning symbol requires
immediate service or repair. Driving with a low oil pres­
sure indication is likely to cause severe engine damage.
If the ~ symbol on the display flashes, the engine oil pres­
sure is too low. A driver message appears as well to explain
the malfunction in more detail. The driver warning goes out
after about 5 seconds, but it can be brought up at any time
by pressing the [SET] button again.
Switch off engine and check oil level
- Stop the vehicle.
Controls and equip ­
ment
Driver information display
Turn the engine off.
- Check the brake fluid level=>
page 275.
Seek professional assistance if necessary.
Engine oil level too low
If the engine oil level is too low, add engine oil=> page 275.
Engine oil level correct
If the symbol "t::7-flashes even though the engine oil level is correct,
please seek professional assistance. Do not continue driving . Do not
leave the engine running
idle, either.
[ i] Tips
• The engine oil pressure symbol "t::7-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, preferably each time you refuel, and
always before going on a long trip .
• The yellow oil level warning indication .,... requires oil refill or
workshop service without delay. Do not wait until the red oil pres­
sure warning
"t::7-starts to flash before you respond to the low oil
level warning . By then, your engine may already have suffered
serious damage. •
Fill engine oil now ~ ..
~-Please replenish oil now
If the ~ symbol lights up, then the oil has to be replenished right
now =>
page 275. •
I • •

Warm and cold
Warm and cold
Deluxe automatic climate control
App lies to vehicles: with deluxe automat ic climate cont ro l
Description
The climate control system can be used to set a comfort­
able temperature inside the vehicle.
The climate control system is a combination of a heating and venti ­
lation system as we ll a cooling system responsible for dehumid i­
fying and cooling the air inside the vehicle.
The au tomatic c limate control system aut omatically mainta ins a
temperature once it has been set. The temperature of the air from
the vents, fan speed (air volume) and ai r distribution are also auto ­
matical ly adjusted . The system also takes into account strong
sun light so that manual adjustment is not necessary. So in almost
a ll cases,
automati c mode offers the best conditions fo r the com fort
of the occupants at all times of the year =>
page 92.
Please n ote the following :
The cooling mode lowers the humidity level inside the vehicle. This
prevents fogging up of the windows.
In the case of high outside humidi ty a nd temperatures,
condensa ­
tio n
can drip from the air conditioning system evaporator and form
a po ol under the vehicle . This is normal and not an indica tion of
leaks!
At low outside temperatures, the fan automatica lly switches to a
higher speed when the coolant reaches a sufficient temperature
except in the defroster position .
When star ting with ful l throttle, the compressor of the au toma tic
climate control system is temporari ly switched off to achieve full
engine power. To ensure engine cooling when the engine is under an extreme
load,
the compressor is switched off at high coo lant temperatures.
Pollutant filter
The pollutant filter (pa rticle fi lter) ensu res that impurit ies in the
outside air (e .g . dust, pollen) and odors are significant ly reduced or
stopped. The air is also fi ltered in recirculation mode .
The pol lutant fi lter e leme nt m ust be changed at the i nterva ls spec i­
fied in the service plan so that the performance of the automatic
cli mate con trol syste m is not impaired.
If the effectiveness of the filter decreases prematurely due to oper ­
ation of the vehicle in areas with significant pollution, the f ilter
e lement must be changed between the speci fied s ervice dates.
K ey recognition
The current automatic climate contro l settings are automatica lly
stored and assigned to the mas ter key .
Energy managem ent
To p revent t he ba ttery from being discharged and t o res to re the
balance of energy, components which require large amounts of
ene rgy are temporarily cut back or switched off=>
page 241.
Heating systems in particu lar require a great deal of energy. If you
notice, for examp le, that the rear window heater is not heating, then
it has been temporarily reduced or switched o ff by
energy manage ­
ment .
These systems are available again as soon as the energy
balance has been restored .
& WARNING
Traffic safety require s all windo ws to be clear of ice , sn ow, and
condensation . Only then c an good visibility be ensured . Famil-
ia rize yourself with the co rre ct operation of the automatic climate
~

___ C_h_ e_ c_k _in --== g'-- a_n _d_ f_il _li _n ..:::g:::..- ___________________________________________ _
0 Note
• Before winter sets in, have the coolant checked to see if the
coolant additive in your vehicle is sufficient to meet the climate
conditions. This is especia lly important if you live in a region where
the winter is extremely cold. If necessary, increase the proportion of
coo lant additive to 60%.
• When adding coolant additive to your coo ling system,
reme mber:
- We recommend using only coolant additive G12+ + (check the
label) for your vehicle. This coolant addit ive is ava ilable at autho­
rized Audi dealers . Other types of antifreeze can significantly
reduce 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 radiator repair fluid may adverse ly affect the
function and performance o f your cooling system and cou ld result
in damage not covered by your New Vehicle Limited Warranty. •
Checking the engine coolant level
The engine coolant level can be checke d with a quick
glance.
Fig . 2 25 Engine
c omp artmen t: Coo la n t
e xpan sion tank
Be fo re y ou c heck anything in the e ngine compar tm en t,
always read and heed all WARNINGS==> & in "Working in
the eng ine compartment" on
page 271.
Tur n off the ignitio n.
- Let the engine coo l down.
P lace a th ick rag ove r the coola nt expans io n tank
==> fig. 225 and carefully twist th e cap counter-c lockwise
==> & .
Read t he e ngin e coola nt level i n the open coo la nt expan­
sion tank==> fig. 225. W ith a cold eng ine, the coolant leve l
sho uld be bet ween the "m in" and "max" markings. W hen
t h e eng ine is warm, the level may be slightly above the
"max" marking .
The location of the coolant expansion tank can be seen in the
engine compartment illustration=>
page 272.
To obtain an accurate read ing, the engine must be switched off .
The expansion tank in your vehicle is equipped with an e lectric
coo lant leve l sensor.
When the coolant leve l is too low, the warning light in the Auto ­
Check System =>
page 30will blink until you add coolant and the
level has been restored to normal. Even though there is an electric
coo lant level sensor, we still recommend you check the co olant level
from t ime to time.
C oolant loss
Coolant loss may indicate a le ak in the cooling system . In the event
of coo lant loss, the co oling system should be inspec ted i mmedi ­
ately by your authorized Audi dealer. It is not enough mere ly to add
coo lant.
In a
s ealed system, losses can occur on ly if the boi ling point of the
coo lant is exceeded as a result of overheating. ...

•---=C:.:h..:. e=-= c..:.k :..:.in :..:.:= g:.....= a..:.n :.:d::....:. f.:.:il .:.:li ..:.n :..::g~ --------------------------------------------
0 Not e
• Coolant pollutes the environment and cou ld cause an engine
fire. Excess coolant will be forced out through the pressure relief
valve in the cap when the engine becomes hot.
• If, in an emergency, only water can be added, the correct ratio
between water and antifreeze ~
page 277 must be restored as soon
as possible .
ci> For the sake of the environment
Dra ined coolant should not be reused . Always dispose of used
coolant whi le observing all environmental regulations. •
Radiator fan
The radiator fan switches on automatically by itself.
The rad iator fan is driven by the eng ine v ia the V-be lt . The v iscous
clutch regulates the speed of the fan according to the tempera ture
of the coo lant .
An auxiliary electric radiator fan * swi tches on and off depending on
coo lant temperature and other vehicle operating conditions.
After you switch the engine off, the auxiliary fan can continue running for up to 10 minut es -even with th e igni tion o ff. It can even
switch o n again later by itself~ & , if
• the temperature of the engine coo lant rises due to the heat
bui ld -up from the engine in the engine compartment, o r
• the engine compartment heats up because the vehic le is parked
in intense sun light.
& WARNING
• To reduce the ri sk of per sonal injury never tou ch the radiator
f a n.
& W AR N ING (continu ed )
• The auxiliary e le ctri c fan i s temperature controlled and can
s w itch on suddenly even when the engine is not running .
• The auxiliary radiator fan swit ches on automatically when the
engine coolant reache s a ce rtain temperature and will con tinue to
run until the coolant t emperatur e drop s. •
Brake fluid
Checking brake fluid level
Th e brake fluid level c an be checked with a quick glance.
Fig . 22 6 En gin e
co mp art m ent : B ra ke
fl uid re servoir
Befo re yo u c heck anything in th e en gin e compar tme nt,
always read and heed all WARNINGS~ & in "Working in
the eng ine compartment" on
page 271 .
Read the brake fl uid level from the bra ke fluid reservoir
~ fig . 226. T he b rake fluid leve l must be betwee n the
" M IN " and "MAX" markings.
The brake fluid reservoir is located at the rear partition of the engine
compartment on the left side~
page 272 . .,_

__________________________________________________ C_o_ n _ s_u_ m_ e ___ r_l_ n _f_ o_ r _m...:....:.. a:.;..:. ti .... o:.. n ........ _lllllll
& WA RNIN G (continu ed )
• The engine compartment of any motor vehi cle i s a potentially
h az ardou s area. N ev er re ach into the are a arou nd or to uch the
r a di ator fan . It is temperature co ntrolled and can swi tc h o n
s uddenly -even wh en the engine i s off and the ignition key h as
been removed . The r adiator f an switches on autom atic all y w hen
the coolant reache s a certain temperature and will continue to run
until the coo lant t emper ature drop s.
• Alway s remov e th e ignition key befo re anyone get s under the
v ehi cle .
• Alway s s upport your vehi cle with safety sta nd s if it i s ne ces­
sa ry to wor k unde rne ath the veh icle . The ja ck suppl ied with the
v ehic le i s not adequ ate for thi s purpo se and could coll ap se
c au sin g s eriou s per son al in jury .
• If you m ust w ork under neath the vehi cle with the wheel s on
the ground , alwa ys m ake sure the veh icle i s on l eve l ground , that
the wheels ar e always securely blocked and that the engine
ca nn ot be sta rted .
• Alway s mak e sure the tran sm iss ion selecto r leve r (automatic
tr ansmi ssion ) is in "P " (Park po sition ) or Neutr al (manu al tr ansmi s­
s ion ) and th e park br ake i s firmly applied.
c£> For the sake of the environment
• Changing the engine settings w ill adverse ly affect emission
levels . This is detrimenta l to the environment and increases fuel
consumption.
• Always observe environmenta l regu lations when disposing of
old engine oil, used brake fluid, dirty engine coolant, spent batteries
or worn out tires.
• Undeployed airbag modules and pretens ioners might be classi ­
fied as Perchlorate Material -specia l handling may apply, see
www .dtsc .ca .gov/hazardouswaste/perchlorate. When the vehicle or
parts of the restraint system including airbag modules safety belts
with pretens ioners are scrapped, all applicable laws and regu la-
Controls and equip­
ment Safety first Vehicle operation
tions must be observed. Your authorized Audi dealer is familiar with
these requirements and we rec
ommend that you have your dea ler
perform this service for you .•
Additional accessories ,
modifications and parts replacement
Addition al a ccessori es and parts
replacement
Always c onsul t an authorized Audi dealer before
purchasing accessories.
Your vehicle incorporates the latest safety design features ensuring a high standard of act ive and passive safe ty .
This safety could be compromised by non -approved changes to the
vehic le . F or this reason, if par ts have to be replaced, please observe
the following points when insta lling additiona l accessories:
Approved Audi accessories and genuine Audi parts are avai lable
from authorized Audi dealers.
These dealers also have the necessary facilities, tools and trained specialis ts to install the parts and accessories prope rly.
& WARNING
Using the wrong spare part s or u sing non-approved acce ssorie s
c an cause d am age to the vehi cle and seriou s pe rsonal injur y.
• Use onl y acc essorie s ex pres sly approved by Audi and g enuine
Audi spare p art s
• The se p art s and acce ssorie s have been spe cia lly de signed to
be used on you r vehi cle .
• Nev er in stall acc ess orie s s uch a s telep hone cra d le s or
be ver age holder s on airb ag cover s or within th e airbag deploy-
Vehicle care Do-it-yourself service Tec hn ica l da ta