2010 AUDI A5 COUPE check engine

When a yellow warning symbol appears, one warning tone sounds.
A driver message appears as well to explain the malfunc tion in more
detail. The driver warning goes out after about 5 seconds, but it can
be brought up at any time by pressing the
!SE T) button again.
Check the function disp layed as soon as possible . The ye llow
symbol will not go out again until the reason for the malfunction has
been corrected.
If several priority 2 malfunctions are present, the symbols appear in
succession and remain for about 2 seconds .
Controls and equip­
ment
Dynamic steering*
Worn brake pads
Battery voltage
II Defective light bulb*
Check engine oil level
Engine oil sensor malfunction
Low fuel level
Windshield washer fluid
level low
Convenience key*
Key not in vehicle
Light/rain sensor* defective
Dynamic headlight range
control defective =>
page 33
=> page 34
=>
page 35
=> page 35
-
=> page 36
or => page 36
=> page36
=> page 35
=> page 35
=> page 34
=> page 34
=> page 36
Dr ive r informat ion di spl ay
II Battery in remote control key => page 39
-
Electromechanical => page 115
parking brake
-Engine speed limitation* => page 36
adaptive light * defective => page 36
Ignition lock malfunction => page 36
Adaptive dampers* => page 36
"Windshield wiper defective => page 37
-
Significant loss of air pres -=> page 307
sure*
Tire pressure monitoring syste
=> page 307
m* (malfunction)
[ i ] Tip s
The speed warnings warning threshold 1 '") and warning threshold
2 :,. are also yel low symbo ls in some models. The warning is always
shown as a small symbol in the upper area of the display
=> page 26. •
Applies t o veh ic les: w ith Audi dri ve sele ct
Dynamic steering
D yn a m ic s te er ing : Syste m malfun cti on
This driver message and the symbol appear when a system
malfunction occurs during travel. You can continue to drive care­
fully at a reduced speed to a qualified workshop. Steering can be .,_
I • •

Driver information display
more difficult or sensitive than usual. The steering wheel can also
be at an angle when driving straight.
Dynamic steering: initialization
If this driver message appears and the indicator light is flashing
on the instrument panel, dynamic steering is being reinitialized.
Once you start the engine after this is finished, the steering wheel
wi ll be easy to move. Re-initialization might be necessary if the
steering whee l was moved hard to the left and right while the
vehicle was not moving. The display goes out as soon as initializa­
tion is complete .
& WARNING
Have the dynamic steering system malfunction repaired as soon
as possible by an authorized Audi dealer or any qualified work­
shop -risk of accident!
[ i ] Tips
The dynamic steering stability systems are not available in the event
of a system malfunction. •
Applies to vehi cles: wit h conven ienc e key
Key not in vehicle
Key not in vehicle
This reminder appears along with the symbol if the master key is
removed from the vehicle with the engine running. It is intended to
remind you (e .g. when changing drivers) not to continue the journey
without the master key.
If the master key is no longer in the vehicle, you cannot switch off
the ignition after stopping the engine and you also cannot start the
engine again . You also cannot lock the vehicle from the outside .•
Ap plies to vehi cles : w it h li ght/ ra in sensor
Light /rain sensor defective C../1
...i-Automatic headlights /automatic wipers defective
If the symbo l il luminates, the light sensor has failed . For safety
reasons the low beams are turned on permanently with the switch
in
AUTO . However, you can continue to turn the lights on and off
using the light switch. In the case of a defect in the rain sensor, the
windshie ld wiper lever functions are still available. Have the
light/rain sensor checked as soon as possible by an authorized Audi
dea ler. •
Worn brake pads
Brake pads!
If the warning light illuminates, immediately contact your autho­
rized Audi dealer or qualified workshop to have all brake pads
inspected . On USA models the warning light 't comes on together
with the warning light
BRAKE . Both sets of brake pads on an axle must
a lways be replaced at the same time .
& WARNING
Driving with bad brakes can cause a collision and serious personal
injury.
• If the warning light and the warning lig ht
BRAKE1
l with the
message Brake pads! comes on in the instrument cluster display ,
immediately contact your authorized Audi dealer or qualified
workshop to have all brake pads checked or replaced if
necessary .•
1 1 BRAK£ : USA models only

Applies to vehic les: with defective light bulb warn ing
Defective light bulb warning
The defective light bulb warning monitors the function of
the light bulbs in the vehicle.
The defective light bulb warning monitors the function of the light
bulbs. If a defective light bulb is detected, or if a light bulb has
burned out, a yellow symbol appears as well as a notification that
shows which light bulb is defective.
Defective bulb
If this symbol lights up, a turn signal (front or rear), a headlamp,
a brake light, the back-up light, a fog lamp or a rear fog lamp has
failed.
& WARNING
• Light bulbs are under pressure and can explode when bulbs are
replaced -risk of injury.
• With gas-discharge lamps* (xenon headlights), the high­
voltage component must be handled appropriately. Doing other­
wise poses a risk of death!
[ i] Tips
Have an authorized Audi dealer or other qualified workshop perform
the replacement or the repair. •
Windshield washer fluid level too low ->
Top off the washer fluid
If the symbol illuminates, add windshield washer fluid to the washer
system and also to the headlight washer system* =>
page 286. •
Controls and equip ­
ment
Driver information display
Fuel supply too low \l
When the symbol illuminates, this means there are about 2.1
gallons
(8 liters) of fuel left in the fuel tank. Time to refuel!
=>
page 266.
If the symbol lights up, even when there is ample fuel in the tank,
and the text
TANK SYSTEM MALFUNCTION ! CONTACT WORKSHOP
appears in the display, there is a fault in the system. Contact a qual­
ified workshop to have the fault rectified. •
Applies to veh icles: with battery voltage warning
Battery voltage ..:J
If battery power drops into the range where it can limit the ability of
the engine to start, this the symbol appears in the instrument
cluster display with the following driver message
battery charge
low: Indicates charging by being driven .
While this driver notification is displayed, you have to be prepared
for limited starting capability.
Driver message appears and goes out again
If this driver message appears after the ignition is turned on or
while driving and it goes out again after a while, the battery has
been adequately recharged.
Driver message appears and does not go out again
If this driver notification appears after the ignition is turned on or
while driving and does not go out again, the battery's state of
charge is not in the optimal range. Starting capability is restricted.
Have the battery checked at an authorized Audi dealer or other qual­
ified workshop as soon as possible. •
I • •

Driver information display
Check engine oil ~
:... Please top off with max. 1 L of oil . You can keep driving.
If the .._. symbol lights up displaying this driver message, then add
a maximum of 1 liter at your earliest opportunity=>
page 275. •
Engine oil level 'I..!.
Please check oil level
When the symbol illuminates, check the engine oil level as soon as
possible =>
page 275. Top off the oil at your earliest opportunity
=>
page 275. •
Engine oil sensor defective --
,. Oil level! Sensor defective
If the symbol illuminates, contact your authorized Audi dealer and
have the oil sensor inspected . Until you have this done, check the oil
level each time you refuel just to be on the safe side=>
page 275. •
Applies to vehi cles: with engine spee d lim itation
Engine speed limitation
~ Engine speed maximum XXXX RPM
The / symbol illuminates when there is an engine control malfunc­
tion . The indicator light • in the instrument cluster also illumi­
nates. The engine speed is limited to the speed displayed in the
driver information system. Keep in mind that the engine speed will not exceed the value displayed in the driver information system, for
example when downshifting.
Please go to an authorized Audi dealer or other qualified workshop
to have the malfunction repaired. •
• Headlight range control defective )
, > Headlight range control defective !
If the symbol "', illuminates, the dynamic headlight range control is
no longer working properly. Have the system checked and repaired
at your authorized Audi dealer. •
Applies t o vehicl es: with a dapt iv e ligh t
Adaptive light defective .CJ
Adaptive Light defective
When this symbol illuminates, it means that adaptive light is
defective. Go to an authorized Audi dealer to have the headlights or
the control unit for the adaptive light repaired. •
Ignition lock malfunction ~
Ignition lock defective
If the symbol in the display comes on, there is a malfunction in
the electronic ignition lock. Please go to an authorized Audi dealer
or other qualified workshop to have the malfunction repaired. •
Applies to vehi cles : with Audi drive se lec t
Adaptive dampers
11
Adaptive dampers: system malfunction
If the symbol in the display comes on, there is a malfunction in the
adaptive dampers . Please go to an authorized Audi dealer or other
qualified workshop to have the malfunction repaired. •

& WARNING
• Do not leave children unattended in the vehicle, especially with
access to vehicle keys. Unsupervised use of the keys can result in
starting of the engine and use of vehicle systems such as power
windows, etc. which could result in serious injury.
• Remember -you can still open or close the power windows for
about ten minutes after the ignition is switched off. Only when
either of the doors are opened are the power windows switched
off.
• Be careful when closing the windows . Check to see that no one
is in the way, or serious injury could result!
• Always remove the ignition key whenever you leave your
vehicle.
• If you lock your vehicle from the outside, no one, especially chil­
dren, should remain in the vehicle.
• Do not stick anything on the windows or the windshield that
may interfere with the driver's field of vision.
[ i) Tips
• When you open the doors, the windows automatically lower
about 10 mm .
• Afte r the ignition has been switched off , the windows can still be
opened or closed for about 10 minutes . The window regulators are
not switched until the driver's or passenger 's door is opened. •
Controls and equip ­
ment
Opening and closing
Convenience opening /closing
The windows and the panoramic tilting sunroof can be
opened and closed with the mechanical key or the emer­
gency key.
Convenience opening feature
~ N 0
"' "' m
Fig. 46 Key turns for
opening and closing
- Use the emergency key or pull the mechanical key out of
the master key::} page
40.
- Insert the key into the lock of the driver's door.
Turn the key to position ::} fig. 46
@ until all the
windows have reached the desired position and the
panoramic tilting sunroof is tilted.
Convenience closing feature
-Use the emergency key or pull the mechanical key out of
the master key::} page
40.
Turn the key in the lock of the driver's door to the lock
position @ until the windows and the panoramic tilting
sunroof are closed::}& .
When the panoramic tilting sunroof is tilted/closed, the electric sun
shade * is also opened /closed. ._
I • •

Clear vision
0 Note
Always be aware of changes in outside light conditions while you
are driving. Respond in time to fading daylight by turning the light
switch to position
gO (or "AUTO") to turn on your headlights. •
Instrument lighting
The basic brightness of the illumination for the instru ­
ments, the center console and the display can be
adjusted.
Press the knob to release it.
Fig. 54 Instrument
lighting
- Rotating the knob to the right"+" will increase the basic
brightness when it is dark.
Rotating the knob to the left" -" will decrease the basic
brightness when it is dark.
- Pressing the knob will prevent unintentiona l changes.
0 Note
The instrument cluster and center console illumination (gauges and
needles) comes on when you switch on the ignition and the
vehicle headlights are off
.
Be aware of the following difference between
models built to US or Canadian specifications:
• USA models: illumination of the instrument cluster (gauges and
needles), dash and center console around the gearshift lever is
controlled by a light sensor located in the instrument panel. The
instrument panel illumination will automatically become dimmer
as the daylight fades away and eventually will go out completely
when outside light is very low. This is to remind you, the driver, to
switch on the headlights before it gets too dark.
• Canada models: instrument panel illumination will stay bright
regardless of the intensity of ambient light . Always be aware of
changes in outside light conditions while you are driving. Respond
in time to fading daylight by turning the light switch to position
gD
(or "AUTO" if your car is equipped with this feature) to turn on your
headlights. •
Applies to vehicles : w ith xenon head ligh ts
Xenon headlights
After starting the engine, the xenon headlights are automatically
adjusted to the load and angle of the vehicle (for example, during
acceleration and braking!. This prevents oncoming traffic from
experiencing unnecessary headlight glare from your xenon head­
lights.
If the system is not operating properly, a warning symbol in the
Auto-Check Control is displayed
:::::> page 36. •

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 ._

•
appears in the display as well. The ASR can be deactivated at any
speed.
The ASR should normally be activated all the time . Only in certain
exceptional situations when some s lip is desirable does it make
sense to deactivate the ASR. Examples:
• when driving with tire chains
• when driving in deep snow or on loose ground and
• when rocking the vehicle loose after it has become stuck.
When the abnormal situation is over, you should activate the ASR
again.
& WARNING
The increased safety afforded by ASR does not mean that you can
take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
[ i ] Tips
To ensure that the ASR works properly, al l four wheels must be fitted
with identical tires. Any differences in rol ling radius of the tires can
cause the system to reduce engine power when this is not desired.
See also :::::>
page 299, "New tires and rep lacing tires and wheels" .•
Braking
General information
What affects braking efficiency?
Operating conditions and driving habits
The brakes on today's automobiles are still subject to wear,
depending large ly on operating conditions and driving habits:::::>& .
On vehicles that are either driven mostly in stop-and-go city traffic
or are driven hard, the brake pads should be checked by your autho-
Intelligent technology
rized Audi dealer more often than specified in the Warranty & Main­
tenance booklet.
Fai lure to have your brake pads inspected can
resu lt in reduced brake performance .
On steep slopes, you shou ld use the braking effect of the engine.
This way, you prevent unnecessary wear on the brake system. If you
must use your brakes, do not hold the brakes down continuous ly.
Pump the brakes at intervals.
Moisture or road salt
If you are driving faster than 31 mph (50 km/h) and the windshield
wipers are on, the brake pads will briefly touch the brake discs in
regular intervals so as to improve reaction time when braking on
wet surfaces. You , the driver, wil l not notice anything.
Under certain conditions, for example, when driving th rough water
or very heavy rain , or even after washing your vehicle , the braking
effect can be reduced due to moisture (or in freezing conditions ice)
on the brake pads. A few careful brake applications should dry off
the brake pads or remove any ice coatings .
The ef fectiveness of the brakes can be reduced when the vehicle is
driven on a salt -covered road and the brakes are not used . Here too ,
you should clean off accumulated sa lt coating from brake discs and
pads with a few carefu l applications of the brake:::::>&.
Corrosion
There may be a tendency for dirt to build up on the brake pads and
corrosion to form on the discs if the car is not drive n regularly or
only for short trips with litt le use of the brakes .
I f the brakes are not used frequently, or if corrosion has formed on
the discs, it is advisable to clean off the pads and discs by braking
firm ly a few times from a moderately high speed:::::>& .
Faults in the brake system
If you shou ld notice a sudden increase in brake pedal travel, then
one of the two brake circuits may have failed:::::>&. ..,
I t •