2010 AUDI A5 COUPE engine overheat

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

0 Note
Never run the tank completely dry! An irregular supply of fuel can
cause engine misfiring and fuel could enter into the exhaust
system. The cata lytic converter could then overheat and be
damaged .•
Odometer
The odometer indicates the distance driven.
Fig. 5 Instrument
cluster: odometer
Fig . 6 Instrument
c luste r: reset button
The display of distance driven is shown in kilometers "km" or in
"miles".
• USA models -Miles
Con tro ls and eq uip­
ment
Instruments and warning /indicator lights
• Canada models - Kilometers
The units of measure (kilometers/miles) can be changed in the MMI*
or using the
I CAR I button on the radio control.
Odometer/trip odometer
The odometer shows the total number of kilometers or miles that
have been driven on the vehicle .
The trip odometer shows the distance driven since it was last reset.
It can be used to measure short distances. The last digit shows
distances of 100 meters or 1/10 of a mile.
The trip odometer can be reset to zero by pressing the reset button
[ 0.0] => fig. 6.
Malfunction message
If there is a malfunction somewhere in the instrument cluster,
dEF
will appear in the trip odometer and will stay on . Contact your
authorized Audi dealer to have the problem corrected.
Immobilize r
When the ignition is switched on, the data on the ignition key are
scanned automatically .
If an unauthorized key was used,
SAFE is displayed permanently in
the odometer disp lay field. The vehicle cannot be operated
=> page 38.
[ i ] Tips
• The date, time, and distance cont inue to show for about 30
seconds after the ignition is switched off.
• The odometer turns on for about 30 seconds when the driver's
door is opened .
• The odometer can be turned on for approximate ly 30 seconds
with the ignition off by pressing the [SET ] button=> page 9, fig. 3. •
Vehicle care
I I irechnical data

ll}JI Intelligent technology
---""'------------ ....::....:...:~---------------------------
almost no grip. Without EDL, this would be difficult, if not impos­
sible.
How the system works
The EDL operates automatically. It monitors the rotational speed of
wheels with the help of the ABS sensors=:,
page 238 . If a noticeable
slip is detected at the wheels (e.g. on slippery ground on one side),
the spinning wheels are braked and power is transferred to the
other wheels. This is done up to a speed of about 60 mph (100 km/h).
Noises from the brake system signal that wheel spin is being
controlled.
Driving off
When driving off, always be sure to keep road conditions in mind as
you accelerate. If one drive wheel spins because it is on a surface
with less grip, apply
plenty of throttle until the car starts to move.
Overheating of brakes
To prevent the disc brake of the braked wheel from overheating if
subjected to excessive loads on this wheel, the EDL cuts out tempo­ rarily. The vehicle remains operational and behaves in the same way
as a vehicle without EDL.
As soon as the brake has cooled down, EDL switches on again auto ­
matically.
& WARNING
• When accelerating on slippery surfaces, such as on ice or snow,
always be careful when depressing the accelerator pedal. Even
with the EDL working, the drive wheels can spin and reduce your ability to control your car. Risk of crash!
• The increased safety afforded by EDL does not mean that you
can take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
[ i] Tips
If a fault occurs in the ABS, the EDL is also not functioning . This is
indicated by the ABS warning light=:,
page 15. •
Anti-Slip Regulation System (ASR)
The Anti-Slip Regulation System prevents the driven
wheels from spinning when the car is accelerating.
General notes
The Anti-Slip Regulation System (ASR) is integrated in the electronic
stabilization program (ESP) . When the vehicle starts up and acceler ­
ates, the wheels are prevented from spinning by adjusting the
engine power to match the amount of grip available from the road
surface.
How the system works
ASR performs automatically , i.e. without the driver's intervention .
With the aid of the ABS sensors=:,
page 238, ASR monitors the
speed of the driven wheels. If the wheels start to spin, engine torque
is reduced automatically until the tires find enough grip to lock onto
the road surface. The system is active across the entire speed range.
The ASR works in conjunction with the ABS. If a malfunction should
occur in the ABS, the ASR will also be out of action.
Activating
The ESP is automatically activated when the engine is started and it
performs a self-test . You can activate a deactivated ASR if required
by pressing the=:,
page 234, fig. 215 button. When it is activated,
the message
ESP/ASR on appears briefly in the display.
Deactivating
You can deactivate the ASR if required by pressing the button (for
less than 3 seconds) =:,
page 234, fig. 215. With the ASR deactivated,
the ESP check light comes on, see=:,
page 13. The message ASR off ._

ll}Jl __ ln_t _e_ ll-'"ig ...,_ e_ n_t _t_ e_ c_h _ n_o _ l_o _,.g= y,_ __________________________________________ _
Low brake fluid level
Ma lfu ncti ons can occ ur in th e brake system if the bra ke flu id leve l is
too low. The brake fluid leve l is monitored e lectronically.
Brake lining wear status Bra ke lining wear may be checked by visual inspection of the condi ­
t ion of the brake pa ds through the o pen in g s in t he wheel. If neces ­
sary, the wheel may be removed for this inspection=>
page 312,
" C hanging a whee l" .
& WARNING
• You should perform braking maneuver s for the purpose of
cleaning the brake system only if road cond itions permit . Other
road u sers must not be put at risk -you may cause an accident !
• Before des cending a steep grade , reduce speed and shift trans ­
mission into a lower gear or lower driving range. Do not ride the
brake s or hold the pedal down too long or too often . This could
c ause the brakes to get hot and diminish braking efficiency.
• Do not "ride the brakes " by resting your foot on the pedal when
you do not intend to brake. This may cause the brakes to overheat, p rem ature wear and in creased stopping distance .
• Under certain climatic and operating conditions such as
passing through water , driv ing in heavy rain or after washing the
vehicle , the effectiveness of the brakes can be reduced. In winter ,
ice can accumulate on the brake pads , linings , discs and drums.
Carefully apply brakes for a test. Brakes will dry and ice coatings
will be cleaned off afte r a few careful b rake appli cations .
• Driving for an extended period of time on salt -covered roads
without using your brakes can also affe ct braking effic ien cy. Clean
off accumulated salt coating from brake discs and pads with a few
careful brake applications .
• If you damage the front spoiler , or if you install a different
spoiler , be sure the air flow to the front brakes is not obstru cted .
Otherwise the brake system could overheat reducing the effe ctive­
ness of the entire brake system .
& WARNING (continued )
• Failure of one brake circuit will impair the braking capability
resulting in an increased stopping distance . Avoid driv ing the
vehicle and have it towed to the nearest authorized Audi dealer or
qu alified workshop. •
Brake booster
The bra ke boos ter adds e xtra bra king pow er.
Th e brake boost er wo rks wit h vacuum p ressu re wh ich is created
only when the engine is running=>& .
& WARNING
• Never let the vehicle roll to a stop with the engine shut off.
• If the brake booster is not working , for e xample when towing
your vehicle, or because the brake booster has somehow been damaged , the brake pedal must be pressed considerably harder to
make up for the lack of booster assistance . •
Functioning of Anti-Lock Brake System (ABS}
A BS p revents t he wheels from lockin g up unde r braking.
The ABS co ntrib utes effectively to ve hic le c ont ro l since it preven ts
the whee ls from locking when the bra kes are app lied. Th is means
that the vehicle remains stee rable and is less l ikely to skid .
With ABS you do not need to
pump the brake. Just hold the brake
pedal down .
Ho wever , do not e xpect the AB S to sho rten braking d istance under
all circumstances. When driving o n grave l or on newly fallen snow
o n t op of icy su rfaces, b raking distance may be even lo nger, there ­
f ore, unde r these circumsta nces, it is especially impo rtan t th at you
drive slow ly and with great ca re. ._

___ ln_ t _e_ ll-'"ig ...,_ e_ n_t _t_ e_ c_ h _ n_o _ l_o _,.g= y,_ __________________________________________ _
• Be aware of the different than usual steering response and
adjust your steering force accordingly.
• Have the problem checked and set right by an Audi dealer as
soon as possible.
[ i] Tips
• When the engine is running, never hold the steering wheel
turned all the way to the right or to the left for longer than 15
seconds. The power steering pump will overheat the hydraulic fluid
if you keep holding the steering wheel turned all the way. This is
likely to damage the power steering system.
• If the power steering system should fail en tirely, or if the engine
is not running (for example, while being towed), you will still be able
to steer the vehicle . However,
considerably more effort will be
required to do so.
• If the power steering system should have a leak, or is not func­
tioning properly, contact your authorized Audi dealer immediately.
• The power steering system requires a specially formulated
hydraulic fluid. The power steering reservoir is the one located
farthest to the rear on the left side of the engine compartment
=>
page 272. The correct fluid level in the reservoir is important for
proper functioning of the power steering .•
Driving with your quattro®
With all wheel drive, all four wheels are driven.
General information
With all wheel drive, power is distributed to all four wheels. This
happens automatically depending on your driving style and the
road conditions at the time. See also=>
page 235, "Electronic differ­
ential lock (EDU".
The all wheel drive concept is designed for high engine power. Your
vehicle is exceptionally powerful and has excellent driving charac -teristics both under normal driving conditions and on snow and ice.
Always read and
follow safety precautions =>& .
Winter tires
When driving in the winter, your vehicle with all wheel drive has an
advantage, even with regular tires. In winter road conditions it may
be advisable to mount winter tires (or all-season tires) for improved
driveability and braking : these tires must be mounted on
all four
wheels.
See also => page 304, "Winter tires".
Tire chains
Where tire chains are mandatory on certain roads, this normally
also applies to vehicles with all wheel drive =>
page 305, "Snow
chains".
Replacing vvheels/tires
Vehicles with all wheel drive must always have tires of the same
si ze . Also avoid tires with different tread depths. For details see
page =>
page 299, "New tires and replacing tires and wheels".
Off-Road driving?
Your Audi does not have enough ground clearance to be used as an
off-road vehicle. It is therefore best to avoid rough tracks and
uneven terrain as much as possible. Also refer to=>
page 244.
& WARNING
Always adjust your driving to road and traffic conditions. Do not
let the extra safety afforded by all wheel drive tempt you into
taking extra risks.
• Although the all wheel drive is very effective, always remember
that braking capacity is limited by tire traction. You should there ­
fore not drive at excessive speeds on icy or slippery road surfaces.
• On wet road surfaces, be careful not to drive too fast because
the front wheels could begin to slide on top of the water (aqua­
planing). If this should occur, you will have no warning from a
sudden increase in engine speed as with a front-wheel drive
~

-Neve r run the tank down a ll the way to empty .
- Never put too much motor oil in your engine=>
page 275,
"Adding engine oil 'l:::r.".
-Never try to push- or tow-start your vehic le .
The catalytic converter is an efficient "clean -up" device built into the
exhaust system of the vehicle. The cata lytic converter burns many
of the po llutants in the exhaust gas before they are released into the
atmosphere.
The exclusive use of un leaded fuel is critica lly important for the life
of the catalytic converter and proper functioning of the engine .
& WARNING
• Do not par k or operat e the vehicle in areas w here the ho t
ex haust sys te m m ay come in conta ct w ith d ry grass, bru sh , fu el
s pill or other mater ial which can cause a fire.
• Do not ap ply ad diti ona l u nd erc o ati ng or ru stpro ofing on o r
n ea r th e ex haust m an ifold, exhau st pipe s, ca talytic convert er or
h eat s hield s. Dur ing drivin g, the sub sta nce use d for und ercoa ting
c ould o verh eat and cause a fir e.
0 Note
• Be aware that just one tank filling with le aded fue l wil l a lready
seriously degrade the performance of the catalytic converter.
• Do not exceed the correct engine oil level
~ page 275.
• Do not drive until the fuel tank becomes completely empty. The
engine could misf ire. Unburned fuel could also get into the exhaust
system and this could cause the catalytic converter to overheat.
• Do not turn off the ignit ion whi le the vehicle is moving.
• Do not continue to operate your vehicle under these conditions,
as otherwise fuel can reach the cata lytic converter. This could result
in overheating of the converter, requiring its rep lacement .
Controls and equip­
ment Safety first Vehicle operation
Dri
ving and environm ent
• To assure efficient operation of the Emission Control System:
- Have your vehic le maintained properly and i n accordance w ith
the service recommendations in your Warranty
& Maintenance
booklet .
- Lack of proper maintenance as wel l as improper use of the
vehic le wi ll impair the function of the em ission control system
and could lead to damage .
Even when the Emission Control System is operating properly, the
exhaust gas can have a sulfur-like exhaust gas smell under some
operating states . This depends on the su lfur content of the fuel
bei ng used. Using a different brand of fue l may help, or fil ling the
tank with lead-free super grade gasoline .
Operate your vehicle economically
and minimize pollution
General
Your personal style of driving will determine the economy
of your vehicle, as well as exhaust and noise levels .
Fuel economy, environmental impact, and wear on your engine,
brakes and tires largely depend on three factors:
• your persona l driving style
• operating conditions
• technica l limitations
If you anticipate what you need to do next and drive economica lly,
you can easily cut your fuel consumpt ion by 10-15 percent . This
section wil l give you some tips on how you can help the environ-
ment and your pocketbook . ...
Vehicle care Do-it-yourself service Technical data

___ D_ r_ iv _i_ n-' g"'""'- a_ n_d_ e_ n _ v_i_r _ o _n_ m_ e_ n_t _____________________________________________ _
[ i ] Tip s
The consumption estimates as published by ENVIRONMENTAL
PROTECTION AGENCY (EPA) and Transport Canada may not corre ­
spond to your actua l consumption on the road, which wi ll vary
depending upon vehic le load and speed, road and weather condi­
tions, trip length, etc .•
Drive smoothly and keep a tookout ahead
Vehicles use the most fuel when they are accelerating.
- Avoid unnecessary accelerating and brak ing.
Vehicles use the most fuel when they are accelerating . If you antici ­
pate what is going to happen next, you will need to brake less and,
thus, accelerate less. Let the vehicle coast whenever possible -for
examp le when you see that the next traffic ligh t is red .
Avoid full thrott e
Driving at moderate speeds saves fuel and improves your
mileage.
- Try and keep we ll below your car's maximum speed.
Acce lerating gently reduces fuel consumption, engine wear, and
does not disturb the environment .
Fuel consumption, exhaust emissions and engine noise increase
disproportionately at high speeds. If you drive at approximate ly
three quarters of top speed, fuel consumption will be reduced by
one half. Never drive faster than the posted speed limit and weather
conditions permit. •
Reducing unnecessary idling
Even when your car is just idling it burns up fuel.
- Shut the engine off when you are not driving the vehicle.
-Do not warm up the vehicle by letting the eng ine run at
idle.
It makes sense to shut off the engine in traffic jams, when waiting
for trains to pass at rai lroad crossings, or at traffic lights that have
long waits on red. Turning the engine off for just 30-40 seconds
saves more fuel than is burned starting the engine again .
It takes a long time for the engine to warm up fully when it is
running at idle. However, wear and noxious emissions are especially
high when the engine is warming up. So you should drive away as
soon as you start the engine and avoid running at high rpms while
the engine is sti ll warm ing up .
0 Note
Do not leave engine idling unattended after starting. If warning
lights should come on to indicate improper operation, they would
go unheeded . Extended id ling a lso produces heat, which could
resu lt in overheating or other damage to the vehicle or other
property .•
Regular maintenance
A badly tuned engine unnecessarily wastes a lot of fuel.
- Have your vehicle serviced at regular intervals.
By having your vehicle regularly serviced by an authorized Audi
dea ler helps to ensure that it runs properly and economically. The
condition of your vehicle not only affects its safety and abi lity to
hold its value, it also affects
f ue l co nsu mpti on.
C hec k your o il e ach tim e y ou fill your ta nk.

___ T_ r _a_ il_e _r_ t_ o_ vv_ in__... g,_ __________________________________________________ _
Observe speed limits. In some areas, speeds for vehicles towing
trailers are lower than for regular vehicles.
Always apply brakes early. When driving downhill, shift into a lower gear to use the engine braking effect to slow the vehicle. Use of the
brakes a lone can cause them to overheat and fail.
Coolant temperature
The coolant temperature gauge=> page 8 must be observed care­
ful ly . If the needle moves close to the upper end of the scale, reduce
speed immediately and/or turn off the air conditioner .
If the coolant temperature warning light in the instrument cluster
starts flashing
-F- , pul l off the road, stop and let the engine idle for
about two minutes to prevent heat build-up .
& WARNING
Anyone not properly restrained in a moving vehicle is at a much
greater risk in an accident. Never let anyone ride in your car who
is not properly wearing the restraints provided by Audi . •
Trailer towing tips
Important to know
----------------
Your vehicle handles differently when towing a trailer because of
the additional weight and different weight distribution. Safety,
performance and economy will great ly depend on how careful ly you
load your trailer and operate your rig.
Before you actual ly tow your trailer, pract ice turning, stopping and
backing up in an area away from traffic. Keep practicing unti l you
have become completely familiar with the way your vehicle -trailer
combination behaves and responds . Backing
up is difficult and requires practice . Backing up with a
t rai ler genera lly requires steering action opposite to that when
backing up your vehicle without a trailer .
Maintain a greater distance between your vehicle and the one in
front of you. You will need more room to stop . To compensate for
the trai ler, you wi ll need a larger than norma l turning radius.
When passing, remember that you cannot accelerate as fast as you
normally would because of the added load. Make sure you have
enough room to pass. After passing, al low plenty of room for your
trai ler before changing lanes again .
Avoid jerky starts, sharp turns or rapid lane changes.
[ i ] Tips
• Do not tow a trailer during the break -in period of your vehicle.
• If you tow a trailer, your Audi may require more frequent mainte­
nance due to the extra load=>
page 339. •
Parking on a s•ope
Do not pork on a slope with a trailer. If it cannot be
avoided, do so only ofter doing the following:
When parking:
Apply the foot brake.
- Have someone p lace chocks under both the vehicle and
the trailer wheels.
With chocks in place, slow ly release the brakes until the
wheel chocks absorb the load.
- Turn the wheels towards the curb.
- Apply the parking brake.